<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2025 Workiva-->
<!--r:f50b9af1-8c68-4b43-bcfb-20cf9fd21e0f,g:f1ccc715-a5e5-4207-8cee-36d614175e07-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:icui="http://www.icumed.com/20241231" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:dtr-types1="http://www.xbrl.org/dtr/type/2020-01-21" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2022-03-31" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://www.icumed.com/20241231">
  <xs:import namespace="http://fasb.org/srt/2024" schemaLocation="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd"/>
  <xs:import namespace="http://fasb.org/us-gaap/2024" schemaLocation="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/2020-01-21" schemaLocation="https://www.xbrl.org/dtr/type/2020-01-21/types.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/2022-03-31" schemaLocation="https://www.xbrl.org/dtr/type/2022-03-31/types.xsd"/>
  <xs:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/country/2024" schemaLocation="https://xbrl.sec.gov/country/2024/country-2024.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/currency/2024" schemaLocation="https://xbrl.sec.gov/currency/2024/currency-2024.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/cyd-af-sub/2024" schemaLocation="https://xbrl.sec.gov/cyd/2024/cyd-af-sub-2024.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/dei/2024" schemaLocation="https://xbrl.sec.gov/dei/2024/dei-2024.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/ecd/2024" schemaLocation="https://xbrl.sec.gov/ecd/2024/ecd-2024.xsd"/>
  <xs:annotation>
    <xs:appinfo>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="icui-20241231_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="icui-20241231_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="icui-20241231_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="icui-20241231_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple"/>
      <link:roleType id="DocumentandEntityInformationDocument" roleURI="http://www.icumed.com/role/DocumentandEntityInformationDocument">
        <link:definition>0000001 - Document - Document and Entity Information Document</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AuditInformation" roleURI="http://www.icumed.com/role/AuditInformation">
        <link:definition>0000002 - Document - Audit Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedBalanceSheets" roleURI="http://www.icumed.com/role/ConsolidatedBalanceSheets">
        <link:definition>9952151 - Statement - Consolidated Balance Sheets</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedBalanceSheetsParenthetical" roleURI="http://www.icumed.com/role/ConsolidatedBalanceSheetsParenthetical">
        <link:definition>9952152 - Statement - Consolidated Balance Sheets (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsofIncome" roleURI="http://www.icumed.com/role/ConsolidatedStatementsofIncome">
        <link:definition>9952153 - Statement - Consolidated Statements of Income</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StatementofComprehensiveIncomeStatement" roleURI="http://www.icumed.com/role/StatementofComprehensiveIncomeStatement">
        <link:definition>9952154 - Statement - Statement of Comprehensive Income (Statement)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StatementofComprehensiveIncomeParanthetical" roleURI="http://www.icumed.com/role/StatementofComprehensiveIncomeParanthetical">
        <link:definition>9952155 - Statement - Statement of Comprehensive Income (Paranthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsofStockholdersEquity" roleURI="http://www.icumed.com/role/ConsolidatedStatementsofStockholdersEquity">
        <link:definition>9952156 - Statement - Consolidated Statements of Stockholders Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConsolidatedStatementsofCashFlows" roleURI="http://www.icumed.com/role/ConsolidatedStatementsofCashFlows">
        <link:definition>9952157 - Statement - Consolidated Statements of Cash Flows</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GeneralandSummaryofSignificantAccountingPolicies" roleURI="http://www.icumed.com/role/GeneralandSummaryofSignificantAccountingPolicies">
        <link:definition>9952158 - Disclosure - General and Summary of Significant Accounting Policies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionsNotes" roleURI="http://www.icumed.com/role/AcquisitionsNotes">
        <link:definition>9952159 - Disclosure - Acquisitions (Notes)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RestructuringStrategicTransactionandIntegrationNotes" roleURI="http://www.icumed.com/role/RestructuringStrategicTransactionandIntegrationNotes">
        <link:definition>9952160 - Disclosure - Restructuring, Strategic Transaction and Integration (Notes)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DiscontinuedOperationsandDisposalGroups" roleURI="http://www.icumed.com/role/DiscontinuedOperationsandDisposalGroups">
        <link:definition>9952161 - Disclosure - Discontinued Operations and Disposal Groups</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueNotes" roleURI="http://www.icumed.com/role/RevenueNotes">
        <link:definition>9952162 - Disclosure - Revenue (Notes)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentReportingNotes" roleURI="http://www.icumed.com/role/SegmentReportingNotes">
        <link:definition>9952163 - Disclosure - Segment Reporting (Notes)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesNotes" roleURI="http://www.icumed.com/role/LeasesNotes">
        <link:definition>9952164 - Disclosure - Leases (Notes)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareBasedAwardShareawardsNotes" roleURI="http://www.icumed.com/role/ShareBasedAwardShareawardsNotes">
        <link:definition>9952165 - Disclosure - Share Based Award Share awards (Notes)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativesandHedgingActivitiesNotes" roleURI="http://www.icumed.com/role/DerivativesandHedgingActivitiesNotes">
        <link:definition>9952166 - Disclosure - Derivatives and Hedging Activities (Notes)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementNotes" roleURI="http://www.icumed.com/role/FairValueMeasurementNotes">
        <link:definition>9952167 - Disclosure - Fair Value Measurement (Notes)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PrepaidsandOtherCurrentAssetsNotes" roleURI="http://www.icumed.com/role/PrepaidsandOtherCurrentAssetsNotes">
        <link:definition>9952168 - Disclosure - Prepaids and Other Current Assets (Notes)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccruedLiabilitiesanOtherLongtermLiabilities" roleURI="http://www.icumed.com/role/AccruedLiabilitiesanOtherLongtermLiabilities">
        <link:definition>9952169 - Disclosure - Accrued Liabilities an Other Long-term Liabilities</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Debt" roleURI="http://www.icumed.com/role/Debt">
        <link:definition>9952170 - Disclosure - Debt</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxes" roleURI="http://www.icumed.com/role/IncomeTaxes">
        <link:definition>9952171 - Disclosure - Income Taxes:</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquity" roleURI="http://www.icumed.com/role/StockholdersEquity">
        <link:definition>9952172 - Disclosure - Stockholders' Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsandContingencies" roleURI="http://www.icumed.com/role/CommitmentsandContingencies">
        <link:definition>9952173 - Disclosure - Commitments and Contingencies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CollaborativeandOtherArrangementsNotes" roleURI="http://www.icumed.com/role/CollaborativeandOtherArrangementsNotes">
        <link:definition>9952174 - Disclosure - Collaborative and Other Arrangements (Notes)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="TransfersandServicing" roleURI="http://www.icumed.com/role/TransfersandServicing">
        <link:definition>9952175 - Disclosure - Transfers and Servicing</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SECScheduleArticle1209ValuationandQualifyingAccounts" roleURI="http://www.icumed.com/role/SECScheduleArticle1209ValuationandQualifyingAccounts">
        <link:definition>9952176 - Disclosure - SEC Schedule, Article 12-09, Valuation and Qualifying Accounts</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GeneralandSummaryofSignificantAccountingPoliciesPolicies" roleURI="http://www.icumed.com/role/GeneralandSummaryofSignificantAccountingPoliciesPolicies">
        <link:definition>9955511 - Disclosure - General and Summary of Significant Accounting Policies (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GeneralandSummaryofSignificantAccountingPoliciesTables" roleURI="http://www.icumed.com/role/GeneralandSummaryofSignificantAccountingPoliciesTables">
        <link:definition>9955512 - Disclosure - General and Summary of Significant Accounting Policies (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="BusinessCombinationandAssetAcquisitionTables" roleURI="http://www.icumed.com/role/BusinessCombinationandAssetAcquisitionTables">
        <link:definition>9955513 - Disclosure - Business Combination and Asset Acquisition (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RestructuringStrategicTransactionandIntegrationScheduleofRestructuringandRelatedCostsTables" roleURI="http://www.icumed.com/role/RestructuringStrategicTransactionandIntegrationScheduleofRestructuringandRelatedCostsTables">
        <link:definition>9955514 - Disclosure - Restructuring, Strategic Transaction and Integration Schedule of Restructuring and Related Costs (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DiscontinuedOperationsandDisposalGroupsTables" roleURI="http://www.icumed.com/role/DiscontinuedOperationsandDisposalGroupsTables">
        <link:definition>9955515 - Disclosure - Discontinued Operations and Disposal Groups (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueTables" roleURI="http://www.icumed.com/role/RevenueTables">
        <link:definition>9955516 - Disclosure - Revenue (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentReportingTables" roleURI="http://www.icumed.com/role/SegmentReportingTables">
        <link:definition>9955517 - Disclosure - Segment Reporting (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesTables" roleURI="http://www.icumed.com/role/LeasesTables">
        <link:definition>9955518 - Disclosure - Leases (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareBasedAwardTables" roleURI="http://www.icumed.com/role/ShareBasedAwardTables">
        <link:definition>9955519 - Disclosure - Share Based Award (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativesandHedgingActivitiesTables" roleURI="http://www.icumed.com/role/DerivativesandHedgingActivitiesTables">
        <link:definition>9955520 - Disclosure - Derivatives and Hedging Activities (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementTables" roleURI="http://www.icumed.com/role/FairValueMeasurementTables">
        <link:definition>9955521 - Disclosure - Fair Value Measurement (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PrepaidsandOtherCurrentAssetsTables" roleURI="http://www.icumed.com/role/PrepaidsandOtherCurrentAssetsTables">
        <link:definition>9955522 - Disclosure - Prepaids and Other Current Assets (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccruedLiabilitiesanOtherLongtermLiabilitiesTables" roleURI="http://www.icumed.com/role/AccruedLiabilitiesanOtherLongtermLiabilitiesTables">
        <link:definition>9955523 - Disclosure - Accrued Liabilities an Other Long-term Liabilities (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtTables" roleURI="http://www.icumed.com/role/DebtTables">
        <link:definition>9955524 - Disclosure - Debt (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesIncometaxdisclosureTables" roleURI="http://www.icumed.com/role/IncomeTaxesIncometaxdisclosureTables">
        <link:definition>9955525 - Disclosure - Income Taxes Income tax disclosure (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquityTables" roleURI="http://www.icumed.com/role/StockholdersEquityTables">
        <link:definition>9955526 - Disclosure - Stockholders' Equity (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsandContingenciesTables" roleURI="http://www.icumed.com/role/CommitmentsandContingenciesTables">
        <link:definition>9955527 - Disclosure - Commitments and Contingencies (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CollaborativeandOtherArrangementsTables" roleURI="http://www.icumed.com/role/CollaborativeandOtherArrangementsTables">
        <link:definition>9955528 - Disclosure - Collaborative and Other Arrangements (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="TransfersandServicingTables" roleURI="http://www.icumed.com/role/TransfersandServicingTables">
        <link:definition>9955529 - Disclosure - Transfers and Servicing (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GeneralandSummaryofSignificantAccountingPoliciesBasisofPresentationDetails" roleURI="http://www.icumed.com/role/GeneralandSummaryofSignificantAccountingPoliciesBasisofPresentationDetails">
        <link:definition>9955530 - Disclosure - General and Summary of Significant Accounting Policies Basis of Presentation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GeneralandSummaryofSignificantAccountingPoliciesInventoryDetails" roleURI="http://www.icumed.com/role/GeneralandSummaryofSignificantAccountingPoliciesInventoryDetails">
        <link:definition>9955531 - Disclosure - General and Summary of Significant Accounting Policies Inventory (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GeneralandSummaryofSignificantAccountingPoliciesPropertyandEquipment1Details" roleURI="http://www.icumed.com/role/GeneralandSummaryofSignificantAccountingPoliciesPropertyandEquipment1Details">
        <link:definition>9955532 - Disclosure - General and Summary of Significant Accounting Policies Property and Equipment #1 (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GeneralandSummaryofSignificantAccountingPoliciesPropertyandEquipment2Details" roleURI="http://www.icumed.com/role/GeneralandSummaryofSignificantAccountingPoliciesPropertyandEquipment2Details">
        <link:definition>9955533 - Disclosure - General and Summary of Significant Accounting Policies Property and Equipment #2 (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GeneralandSummaryofSignificantAccountingPoliciesPropertyandEquipment3Details" roleURI="http://www.icumed.com/role/GeneralandSummaryofSignificantAccountingPoliciesPropertyandEquipment3Details">
        <link:definition>9955534 - Disclosure - General and Summary of Significant Accounting Policies Property and Equipment #3 (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GeneralandSummaryofSignificantAccountingPoliciesGoodwillDetails" roleURI="http://www.icumed.com/role/GeneralandSummaryofSignificantAccountingPoliciesGoodwillDetails">
        <link:definition>9955535 - Disclosure - General and Summary of Significant Accounting Policies Goodwill (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GeneralandSummaryofSignificantAccountingPoliciesIntangibleAssets1Details" roleURI="http://www.icumed.com/role/GeneralandSummaryofSignificantAccountingPoliciesIntangibleAssets1Details">
        <link:definition>9955536 - Disclosure - General and Summary of Significant Accounting Policies Intangible Assets #1 (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GeneralandSummaryofSignificantAccountingPoliciesIntangibleAssets2Details" roleURI="http://www.icumed.com/role/GeneralandSummaryofSignificantAccountingPoliciesIntangibleAssets2Details">
        <link:definition>9955537 - Disclosure - General and Summary of Significant Accounting Policies Intangible Assets #2 (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GeneralandSummaryofSignificantAccountingPoliciesFutureEstimatedAmortizationExpenseDetails" roleURI="http://www.icumed.com/role/GeneralandSummaryofSignificantAccountingPoliciesFutureEstimatedAmortizationExpenseDetails">
        <link:definition>9955538 - Disclosure - General and Summary of Significant Accounting Policies Future Estimated Amortization Expense (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GeneralandSummaryofSignificantAccountingPoliciesInvestmentsDetails" roleURI="http://www.icumed.com/role/GeneralandSummaryofSignificantAccountingPoliciesInvestmentsDetails">
        <link:definition>9955539 - Disclosure - General and Summary of Significant Accounting Policies Investments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GeneralandSummaryofSignificantAccountingPoliciesInvestmentsEquityMethodDetails" roleURI="http://www.icumed.com/role/GeneralandSummaryofSignificantAccountingPoliciesInvestmentsEquityMethodDetails">
        <link:definition>9955540 - Disclosure - General and Summary of Significant Accounting Policies Investments-Equity Method (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GeneralandSummaryofSignificantAccountingPoliciesIncomeTaxes" roleURI="http://www.icumed.com/role/GeneralandSummaryofSignificantAccountingPoliciesIncomeTaxes">
        <link:definition>9955541 - Disclosure - General and Summary of Significant Accounting Policies Income Taxes</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GeneralandSummaryofSignificantAccountingPoliciesForeignCurrencyDetails" roleURI="http://www.icumed.com/role/GeneralandSummaryofSignificantAccountingPoliciesForeignCurrencyDetails">
        <link:definition>9955542 - Disclosure - General and Summary of Significant Accounting Policies Foreign Currency (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GeneralandSummaryofSignificantAccountingPoliciesPostretirementandPostemploymentBenefitsDetails" roleURI="http://www.icumed.com/role/GeneralandSummaryofSignificantAccountingPoliciesPostretirementandPostemploymentBenefitsDetails">
        <link:definition>9955543 - Disclosure - General and Summary of Significant Accounting Policies Post-retirement and Post-employment Benefits (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GeneralandSummaryofSignificantAccountingPoliciesInterestExpenseIncomenetDetails" roleURI="http://www.icumed.com/role/GeneralandSummaryofSignificantAccountingPoliciesInterestExpenseIncomenetDetails">
        <link:definition>9955544 - Disclosure - General and Summary of Significant Accounting Policies Interest (Expense) Income, net (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GeneralandSummaryofSignificantAccountingPoliciesOtherexpenseincomenetDetails" roleURI="http://www.icumed.com/role/GeneralandSummaryofSignificantAccountingPoliciesOtherexpenseincomenetDetails">
        <link:definition>9955545 - Disclosure - General and Summary of Significant Accounting Policies Other (expense) income, net (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GeneralandSummaryofSignificantAccountingPoliciesNetIncomePerShareDetails" roleURI="http://www.icumed.com/role/GeneralandSummaryofSignificantAccountingPoliciesNetIncomePerShareDetails">
        <link:definition>9955546 - Disclosure - General and Summary of Significant Accounting Policies Net Income Per Share (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="GeneralandSummaryofSignificantAccountingPoliciesNewAccountingPronouncementsDetails" roleURI="http://www.icumed.com/role/GeneralandSummaryofSignificantAccountingPoliciesNewAccountingPronouncementsDetails">
        <link:definition>9955547 - Disclosure - General and Summary of Significant Accounting Policies New Accounting Pronouncements (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionsTextDetails" roleURI="http://www.icumed.com/role/AcquisitionsTextDetails">
        <link:definition>9955548 - Disclosure - Acquisitions Text (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionsSmithsMedical2020LimitedTableDetails" roleURI="http://www.icumed.com/role/AcquisitionsSmithsMedical2020LimitedTableDetails">
        <link:definition>9955549 - Disclosure - Acquisitions Smiths Medical 2020 Limited Table (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionsSmithsMedical2020LimitedIntangibleDetails" roleURI="http://www.icumed.com/role/AcquisitionsSmithsMedical2020LimitedIntangibleDetails">
        <link:definition>9955550 - Disclosure - Acquisitions Smiths Medical 2020 Limited Intangible (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionsSmithsMedicalProFormaDetails" roleURI="http://www.icumed.com/role/AcquisitionsSmithsMedicalProFormaDetails">
        <link:definition>9955551 - Disclosure - Acquisitions Smiths Medical Pro Forma (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AcquisitionsForeignInfusionSystemsSupplierDetails" roleURI="http://www.icumed.com/role/AcquisitionsForeignInfusionSystemsSupplierDetails">
        <link:definition>9955552 - Disclosure - Acquisitions Foreign Infusion Systems Supplier (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RestructuringStrategicTransactionandIntegrationDetails1" roleURI="http://www.icumed.com/role/RestructuringStrategicTransactionandIntegrationDetails1">
        <link:definition>9955553 - Disclosure - Restructuring, Strategic Transaction and Integration (Details 1)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RestructuringStrategicTransactionandIntegrationDetails2" roleURI="http://www.icumed.com/role/RestructuringStrategicTransactionandIntegrationDetails2">
        <link:definition>9955554 - Disclosure - Restructuring, Strategic Transaction and Integration (Details 2)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RestructuringStrategicTransactionandIntegrationStrategicTransactionandIntegrationExpensesDetails" roleURI="http://www.icumed.com/role/RestructuringStrategicTransactionandIntegrationStrategicTransactionandIntegrationExpensesDetails">
        <link:definition>9955555 - Disclosure - Restructuring, Strategic Transaction and Integration Strategic Transaction and Integration Expenses (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DiscontinuedOperationsandDisposalGroupsTextDetails" roleURI="http://www.icumed.com/role/DiscontinuedOperationsandDisposalGroupsTextDetails">
        <link:definition>9955556 - Disclosure - Discontinued Operations and Disposal Groups Text (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DiscontinuedOperationsandDisposalGroupsDetails" roleURI="http://www.icumed.com/role/DiscontinuedOperationsandDisposalGroupsDetails">
        <link:definition>9955557 - Disclosure - Discontinued Operations and Disposal Groups (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueDisaggregationofRevenueProductLineDetails" roleURI="http://www.icumed.com/role/RevenueDisaggregationofRevenueProductLineDetails">
        <link:definition>9955558 - Disclosure - Revenue Disaggregation of Revenue - Product Line (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueDisaggregationofRevenuebyGeographyDetails" roleURI="http://www.icumed.com/role/RevenueDisaggregationofRevenuebyGeographyDetails">
        <link:definition>9955559 - Disclosure - Revenue Disaggregation of Revenue by Geography (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueContractLiabilitiesDetails" roleURI="http://www.icumed.com/role/RevenueContractLiabilitiesDetails">
        <link:definition>9955560 - Disclosure - Revenue Contract Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueRemainingPerformanceObligationRecognitionTimingDetails" roleURI="http://www.icumed.com/role/RevenueRemainingPerformanceObligationRecognitionTimingDetails">
        <link:definition>9955561 - Disclosure - Revenue Remaining Performance Obligation Recognition Timing (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentReportingTextDetails" roleURI="http://www.icumed.com/role/SegmentReportingTextDetails">
        <link:definition>9955562 - Disclosure - Segment Reporting Text (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentReportingInformationbySegmentDetails" roleURI="http://www.icumed.com/role/SegmentReportingInformationbySegmentDetails">
        <link:definition>9955563 - Disclosure - Segment Reporting Information, by Segment (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentReportingDetails" roleURI="http://www.icumed.com/role/SegmentReportingDetails">
        <link:definition>9955564 - Disclosure - Segment Reporting (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesDetails" roleURI="http://www.icumed.com/role/LeasesDetails">
        <link:definition>9955565 - Disclosure - Leases (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesLeaseCostDetails" roleURI="http://www.icumed.com/role/LeasesLeaseCostDetails">
        <link:definition>9955566 - Disclosure - Leases Lease Cost (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesSupplementalCashFlowLeaseInformationDetails" roleURI="http://www.icumed.com/role/LeasesSupplementalCashFlowLeaseInformationDetails">
        <link:definition>9955567 - Disclosure - Leases Supplemental Cash Flow Lease Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesSupplementalBalanceSheetLeaseinformationDetails" roleURI="http://www.icumed.com/role/LeasesSupplementalBalanceSheetLeaseinformationDetails">
        <link:definition>9955568 - Disclosure - Leases Supplemental Balance Sheet Lease information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FinanceLeasesSupplementalBalanceSheetInformationDetails" roleURI="http://www.icumed.com/role/FinanceLeasesSupplementalBalanceSheetInformationDetails">
        <link:definition>9955569 - Disclosure - Finance Leases Supplemental Balance Sheet Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesLeaseMaturityDetails" roleURI="http://www.icumed.com/role/LeasesLeaseMaturityDetails">
        <link:definition>9955570 - Disclosure - Leases Lease Maturity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesFinanceLeaseMaturityDetails" roleURI="http://www.icumed.com/role/LeasesFinanceLeaseMaturityDetails">
        <link:definition>9955571 - Disclosure - Leases Finance Lease Maturity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareBasedAwardStockBasedCompensationDetails" roleURI="http://www.icumed.com/role/ShareBasedAwardStockBasedCompensationDetails">
        <link:definition>9955572 - Disclosure - Share Based Award Stock Based Compensation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareBasedAwardStockOptionPlansDetails" roleURI="http://www.icumed.com/role/ShareBasedAwardStockOptionPlansDetails">
        <link:definition>9955573 - Disclosure - Share Based Award Stock Option Plans (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareBasedAwardStockOptionsGrantedandValuationDetails" roleURI="http://www.icumed.com/role/ShareBasedAwardStockOptionsGrantedandValuationDetails">
        <link:definition>9955574 - Disclosure - Share Based Award Stock Options Granted and Valuation (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareBasedAwardStockOptionActivityDetails" roleURI="http://www.icumed.com/role/ShareBasedAwardStockOptionActivityDetails">
        <link:definition>9955575 - Disclosure - Share Based Award Stock Option Activity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareBasedAwardShareAwarddataDetails" roleURI="http://www.icumed.com/role/ShareBasedAwardShareAwarddataDetails">
        <link:definition>9955576 - Disclosure - Share Based Award Share Award data (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareBasedAwardOptionsexerciseddataDetails" roleURI="http://www.icumed.com/role/ShareBasedAwardOptionsexerciseddataDetails">
        <link:definition>9955577 - Disclosure - Share Based Award Options exercised data (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareBasedAwardRSUandPRSUDetails" roleURI="http://www.icumed.com/role/ShareBasedAwardRSUandPRSUDetails">
        <link:definition>9955578 - Disclosure - Share Based Award RSU and PRSU (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareBasedAwardRSUandPRSURollforwardDetails" roleURI="http://www.icumed.com/role/ShareBasedAwardRSUandPRSURollforwardDetails">
        <link:definition>9955579 - Disclosure - Share Based Award RSU and PRSU Roll forward (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ShareBasedAwardESPPNarrativeDetails" roleURI="http://www.icumed.com/role/ShareBasedAwardESPPNarrativeDetails">
        <link:definition>9955580 - Disclosure - Share Based Award ESPP Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativesandHedgingActivitiesForeignExchangeForwardContractsDetails" roleURI="http://www.icumed.com/role/DerivativesandHedgingActivitiesForeignExchangeForwardContractsDetails">
        <link:definition>9955581 - Disclosure - Derivatives and Hedging Activities Foreign Exchange Forward Contracts(Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativesandHedgingActivitiesInterestRateContractsDetails" roleURI="http://www.icumed.com/role/DerivativesandHedgingActivitiesInterestRateContractsDetails">
        <link:definition>9955582 - Disclosure - Derivatives and Hedging Activities Interest Rate Contracts(Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativesandHedgingActivitiesDerivativeBalanceSheetLocationDetails" roleURI="http://www.icumed.com/role/DerivativesandHedgingActivitiesDerivativeBalanceSheetLocationDetails">
        <link:definition>9955583 - Disclosure - Derivatives and Hedging Activities Derivative Balance Sheet Location (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativesandHedgingActivitiesDerivativeInstrumentsandHedgingActivitiesAmountsAffectingConsolidatedStatementsofIncomeDetails" roleURI="http://www.icumed.com/role/DerivativesandHedgingActivitiesDerivativeInstrumentsandHedgingActivitiesAmountsAffectingConsolidatedStatementsofIncomeDetails">
        <link:definition>9955584 - Disclosure - Derivatives and Hedging Activities Derivative Instruments and Hedging Activities - Amounts Affecting Consolidated Statements of Income (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DerivativesandHedgingActivitiesDerivativeInstrumentsandHedgingActivitiesCashFlowHedgeActivityIncludedinAccumulatedOtherComprehensiveIncomeLossDetails" roleURI="http://www.icumed.com/role/DerivativesandHedgingActivitiesDerivativeInstrumentsandHedgingActivitiesCashFlowHedgeActivityIncludedinAccumulatedOtherComprehensiveIncomeLossDetails">
        <link:definition>9955585 - Disclosure - Derivatives and Hedging Activities Derivative Instruments and Hedging Activities - Cash Flow Hedge Activity Included in Accumulated Other Comprehensive Income (Loss) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementSmithsMedicalDetails" roleURI="http://www.icumed.com/role/FairValueMeasurementSmithsMedicalDetails">
        <link:definition>9955586 - Disclosure - Fair Value Measurement Smiths Medical(Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementTextPursuitDetails" roleURI="http://www.icumed.com/role/FairValueMeasurementTextPursuitDetails">
        <link:definition>9955587 - Disclosure - Fair Value Measurement Text Pursuit (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementRollForwardDetails" roleURI="http://www.icumed.com/role/FairValueMeasurementRollForwardDetails">
        <link:definition>9955588 - Disclosure - Fair Value Measurement Roll Forward (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementSmithsMedicalSimulationInputsDetails" roleURI="http://www.icumed.com/role/FairValueMeasurementSmithsMedicalSimulationInputsDetails">
        <link:definition>9955589 - Disclosure - Fair Value Measurement Smiths Medical Simulation Inputs (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementFairValueMeasurementsRecurringBasisDetails" roleURI="http://www.icumed.com/role/FairValueMeasurementFairValueMeasurementsRecurringBasisDetails">
        <link:definition>9955590 - Disclosure - Fair Value Measurement Fair Value Measurements, Recurring Basis (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PrepaidExpensesandOtherCurrentAssetsDetails" roleURI="http://www.icumed.com/role/PrepaidExpensesandOtherCurrentAssetsDetails">
        <link:definition>9955591 - Disclosure - Prepaid Expenses and Other Current Assets (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PrepaidsandOtherNoncurrentAssetsDetails" roleURI="http://www.icumed.com/role/PrepaidsandOtherNoncurrentAssetsDetails">
        <link:definition>9955592 - Disclosure - Prepaids and Other Noncurrent Assets (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccruedLiabilitiesDetails" roleURI="http://www.icumed.com/role/AccruedLiabilitiesDetails">
        <link:definition>9955593 - Disclosure - Accrued Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="OtherLiabilitiesDetails" roleURI="http://www.icumed.com/role/OtherLiabilitiesDetails">
        <link:definition>9955594 - Disclosure - Other Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="A2022CreditFacilityTextDetails" roleURI="http://www.icumed.com/role/A2022CreditFacilityTextDetails">
        <link:definition>9955595 - Disclosure - 2022 Credit Facility Text (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ApplicableMarginBasedonLeverageRatioTermLoanADetails" roleURI="http://www.icumed.com/role/ApplicableMarginBasedonLeverageRatioTermLoanADetails">
        <link:definition>9955596 - Disclosure - Applicable Margin Based on Leverage Ratio Term Loan A(Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ApplicableMarginBasedonLeverageRatioTermLoanBDetails" roleURI="http://www.icumed.com/role/ApplicableMarginBasedonLeverageRatioTermLoanBDetails">
        <link:definition>9955597 - Disclosure - Applicable Margin Based on Leverage Ratio Term Loan B (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtDetails" roleURI="http://www.icumed.com/role/DebtDetails">
        <link:definition>9955598 - Disclosure - Debt (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtMaturityDetails" roleURI="http://www.icumed.com/role/DebtMaturityDetails">
        <link:definition>9955599 - Disclosure - Debt Maturity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="DebtInterestExpenseDetails" roleURI="http://www.icumed.com/role/DebtInterestExpenseDetails">
        <link:definition>9955600 - Disclosure - Debt Interest Expense (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PrincipalPaymentsDetails" roleURI="http://www.icumed.com/role/PrincipalPaymentsDetails">
        <link:definition>9955601 - Disclosure - Principal Payments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesIncomeLossfromContinuingOperationsDetails" roleURI="http://www.icumed.com/role/IncomeTaxesIncomeLossfromContinuingOperationsDetails">
        <link:definition>9955602 - Disclosure - Income Taxes Income (Loss) from Continuing Operations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesTaxProvisionDetails" roleURI="http://www.icumed.com/role/IncomeTaxesTaxProvisionDetails">
        <link:definition>9955603 - Disclosure - Income Taxes Tax Provision (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesChangeintaxespayableDetails" roleURI="http://www.icumed.com/role/IncomeTaxesChangeintaxespayableDetails">
        <link:definition>9955604 - Disclosure - Income Taxes Change in taxes payable (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesEffectivetaxrateDetails" roleURI="http://www.icumed.com/role/IncomeTaxesEffectivetaxrateDetails">
        <link:definition>9955605 - Disclosure - Income Taxes Effective tax rate (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesDeferredincometaxassetsliabilitiesDetails" roleURI="http://www.icumed.com/role/IncomeTaxesDeferredincometaxassetsliabilitiesDetails">
        <link:definition>9955606 - Disclosure - Income Taxes Deferred income tax assets (liabilities) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesOperatingLossCarryforwardsDetails" roleURI="http://www.icumed.com/role/IncomeTaxesOperatingLossCarryforwardsDetails">
        <link:definition>9955607 - Disclosure - Income Taxes Operating Loss Carryforwards (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesTaxCarryforwardsDetails" roleURI="http://www.icumed.com/role/IncomeTaxesTaxCarryforwardsDetails">
        <link:definition>9955608 - Disclosure - Income Taxes Tax Carryforwards (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesTaxHolidayDetails" roleURI="http://www.icumed.com/role/IncomeTaxesTaxHolidayDetails">
        <link:definition>9955609 - Disclosure - Income Taxes Tax Holiday (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesUndistributedforeignearningsDetails" roleURI="http://www.icumed.com/role/IncomeTaxesUndistributedforeignearningsDetails">
        <link:definition>9955610 - Disclosure - Income Taxes Undistributed foreign earnings (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesUnrecognizedtaxbenefitsDetails" roleURI="http://www.icumed.com/role/IncomeTaxesUnrecognizedtaxbenefitsDetails">
        <link:definition>9955611 - Disclosure - Income Taxes Unrecognized tax benefits (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesUnrecognizedtaxbenefitsTextDetails" roleURI="http://www.icumed.com/role/IncomeTaxesUnrecognizedtaxbenefitsTextDetails">
        <link:definition>9955612 - Disclosure - Income Taxes Unrecognized tax benefits Text (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquityDetails" roleURI="http://www.icumed.com/role/StockholdersEquityDetails">
        <link:definition>9955613 - Disclosure - Stockholders' Equity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockholdersEquityAccumulatedOtherComprehensiveIncomeLossDetails" roleURI="http://www.icumed.com/role/StockholdersEquityAccumulatedOtherComprehensiveIncomeLossDetails">
        <link:definition>9955614 - Disclosure - Stockholders' Equity Accumulated Other Comprehensive Income (Loss) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsandContingenciesContingenciesDetails" roleURI="http://www.icumed.com/role/CommitmentsandContingenciesContingenciesDetails">
        <link:definition>9955615 - Disclosure - Commitments and Contingencies Contingencies (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CollaborativeandOtherArrangementsDetails" roleURI="http://www.icumed.com/role/CollaborativeandOtherArrangementsDetails">
        <link:definition>9955616 - Disclosure - Collaborative and Other Arrangements (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="TransfersandServicingDetails" roleURI="http://www.icumed.com/role/TransfersandServicingDetails">
        <link:definition>9955617 - Disclosure - Transfers and Servicing (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SECScheduleArticle1209ValuationandQualifyingAccountsDetails" roleURI="http://www.icumed.com/role/SECScheduleArticle1209ValuationandQualifyingAccountsDetails">
        <link:definition>9955618 - Disclosure - SEC Schedule, Article 12-09, Valuation and Qualifying Accounts (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xs:appinfo>
  </xs:annotation>
  <xs:element id="icui_Restructuringandstrategictransactionexpense" abstract="false" name="Restructuringandstrategictransactionexpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_CommonStockSharesMember" abstract="true" name="CommonStockSharesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_SmithsMedicalMember" abstract="true" name="SmithsMedicalMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_ForeignInfusionSystemSupplierMember" abstract="true" name="ForeignInfusionSystemSupplierMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_AmortizationOfInventoryStepUp" abstract="false" name="AmortizationOfInventoryStepUp" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_ProvisionForWarrantyAndReturns" abstract="false" name="ProvisionForWarrantyAndReturns" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_Sparepartsusage" abstract="false" name="Sparepartsusage" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_IncreaseDecreaseinincometaxesincludingexcesstaxbenefitsanddeferredincometaxes" abstract="false" name="IncreaseDecreaseinincometaxesincludingexcesstaxbenefitsanddeferredincometaxes" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_ProceedsFromIssuanceOfLongTermDebtNetOfLenderDebtIssuanceCosts" abstract="false" name="ProceedsFromIssuanceOfLongTermDebtNetOfLenderDebtIssuanceCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_NetCashPaidReceivedforcurrentandprioracquisitions" abstract="false" name="NetCashPaidReceivedforcurrentandprioracquisitions" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_LesseeOperatingAndFinanceLeaseTextBlock" abstract="false" name="LesseeOperatingAndFinanceLeaseTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="icui_PrepaidsOtherCurrentAssetsAndOtherNoncurrentAssetsTextBlock" abstract="false" name="PrepaidsOtherCurrentAssetsAndOtherNoncurrentAssetsTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="icui_CollaborativeandOtherArrangementsAbstract" abstract="true" name="CollaborativeandOtherArrangementsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="icui_SupplementalCashFlowInformationLeasesTableTextBlock" abstract="false" name="SupplementalCashFlowInformationLeasesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="icui_SupplementalBalanceSheetInformationLeasesTableTextBlock" abstract="false" name="SupplementalBalanceSheetInformationLeasesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="icui_ScheduleofstockcompensationandrelatedtaxbenefitsTableTextBlock" abstract="false" name="ScheduleofstockcompensationandrelatedtaxbenefitsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="icui_ExercisedOptionsDataTableTextBlock" abstract="false" name="ExercisedOptionsDataTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="icui_PursuitVascularInc.Member" abstract="true" name="PursuitVascularInc.Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_InterestMarginandCommitmentFeeTableTextBlock" abstract="false" name="InterestMarginandCommitmentFeeTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="icui_ApplicableMarginOnLoanTypeTableTextBlock" abstract="false" name="ApplicableMarginOnLoanTypeTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="icui_InterestExpenseOnLongTermDebtTableTextBlock" abstract="false" name="InterestExpenseOnLongTermDebtTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="icui_MoldsMember" abstract="true" name="MoldsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_ComputerEquipmentAndSoftwareMember" abstract="true" name="ComputerEquipmentAndSoftwareMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_InstrumentsPlacedwithCustomersMember" abstract="true" name="InstrumentsPlacedwithCustomersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_FurniturefixturesandmoldsMember" abstract="true" name="FurniturefixturesandmoldsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_IndefinteLivedIntangiblesPutInUse" abstract="false" name="IndefinteLivedIntangiblesPutInUse" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_NonpublicCompanyMember" abstract="true" name="NonpublicCompanyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_OtherExpenseIncomeNetTable" abstract="true" name="OtherExpenseIncomeNetTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="icui_OtherExpenseIncomeNetAxis" abstract="true" name="OtherExpenseIncomeNetAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="icui_OtherExpenseIncomeNetDomain" abstract="true" name="OtherExpenseIncomeNetDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_OtherExpenseIncomeNetLineItems" abstract="true" name="OtherExpenseIncomeNetLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="icui_MiscellaneousIncomeNet" abstract="false" name="MiscellaneousIncomeNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_TotalInsuranceProceeds" abstract="false" name="TotalInsuranceProceeds" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_SmithsMedical2020LimitedMember" abstract="true" name="SmithsMedical2020LimitedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_BusinessCombinationConsiderationTransferredCash" abstract="false" name="BusinessCombinationConsiderationTransferredCash" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_MinimumStockPriceTargetForEarnOutPayment" abstract="false" name="MinimumStockPriceTargetForEarnOutPayment" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_RequiredShareHoldingOfStockIssuedAtAcquisition" abstract="false" name="RequiredShareHoldingOfStockIssuedAtAcquisition" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="icui_SmithsGroupICUMedicalCommonSharesSold" abstract="false" name="SmithsGroupICUMedicalCommonSharesSold" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="icui_BusinessCombinationRecognizedIdentifiableAssetAcquiredAndLiabilityAssumed" abstract="false" name="BusinessCombinationRecognizedIdentifiableAssetAcquiredAndLiabilityAssumed" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_BusinessCombinationsIdentifiedAssumedLiabilitiesRecognizedIncomeTaxPayable" abstract="false" name="BusinessCombinationsIdentifiedAssumedLiabilitiesRecognizedIncomeTaxPayable" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_ProFormaAdjustmentAmortization" abstract="false" name="ProFormaAdjustmentAmortization" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_ProFormaAdjustmentFinanceCosts" abstract="false" name="ProFormaAdjustmentFinanceCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_Contingentconsiderationgross" abstract="false" name="Contingentconsiderationgross" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_ShortTermContingentConsiderationGross" abstract="false" name="ShortTermContingentConsiderationGross" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_LongTermContingentConsiderationGross" abstract="false" name="LongTermContingentConsiderationGross" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_Restructuringstrategictransactionandintegration" abstract="false" name="Restructuringstrategictransactionandintegration" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_StrategicTransactionandIntegration" abstract="false" name="StrategicTransactionandIntegration" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_DisposalGroupAccountsReceivableAllowanceForCreditLosses" abstract="false" name="DisposalGroupAccountsReceivableAllowanceForCreditLosses" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_DisposalGroupNetAssetsHeldForSale" abstract="false" name="DisposalGroupNetAssetsHeldForSale" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_InfusionConsumablesMember" abstract="true" name="InfusionConsumablesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_InfusionSystemsMember" abstract="true" name="InfusionSystemsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_VitalCareMember" abstract="true" name="VitalCareMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_Percentageofrevenue" abstract="false" name="Percentageofrevenue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="icui_APACDomain" abstract="true" name="APACDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_OtherforeigncountriesMember" abstract="true" name="OtherforeigncountriesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_InternationalSalesDomain" abstract="true" name="InternationalSalesDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_Percentoftotalrevenue" abstract="false" name="Percentoftotalrevenue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="icui_ContractassetandliabilitybalancesTable" abstract="true" name="ContractassetandliabilitybalancesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="icui_EquipmentrevenueMember" abstract="true" name="EquipmentrevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_SoftwarerevenueMember" abstract="true" name="SoftwarerevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_GovernmentGrantRevenueMember" abstract="true" name="GovernmentGrantRevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_OtherDeferredRevenueMember" abstract="true" name="OtherDeferredRevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_ContractassetandliabilitybalancesLineItems" abstract="true" name="ContractassetandliabilitybalancesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="icui_COntractLiabilityRollforwardRollForward" abstract="true" name="COntractLiabilityRollforwardRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="icui_RevenueRecognitionTimingTable" abstract="true" name="RevenueRecognitionTimingTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="icui_TimingAxis" abstract="true" name="TimingAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="icui_TimingDomain" abstract="true" name="TimingDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_ShortTermMember" abstract="true" name="ShortTermMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_LongTermMember" abstract="true" name="LongTermMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_RevenueRecognitionTimingLineItems" abstract="true" name="RevenueRecognitionTimingLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="icui_OtherLATAMMember" abstract="true" name="OtherLATAMMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_ForeignMember" abstract="true" name="ForeignMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_RevenueToMedline" abstract="false" name="RevenueToMedline" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="icui_Optiontoextendinyears" abstract="false" name="Optiontoextendinyears" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="icui_IndirectTaxBenefitFromStockOptions" abstract="false" name="IndirectTaxBenefitFromStockOptions" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_StockIncentivePlansTable" abstract="true" name="StockIncentivePlansTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="icui_A2011PlanMember" abstract="true" name="A2011PlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_A2003PlanMember" abstract="true" name="A2003PlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_StockIncentivePlansLineItems" abstract="true" name="StockIncentivePlansLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="icui_Sharestransferredfromsupersededplan" abstract="false" name="Sharestransferredfromsupersededplan" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="icui_TimebasedstockoptionMember" abstract="true" name="TimebasedstockoptionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_Timebasedoptionsgrantdatefairvalue" abstract="false" name="Timebasedoptionsgrantdatefairvalue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_PerformanceSharesEarned" abstract="false" name="PerformanceSharesEarned" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="icui_Grantdatefairvalueperformancerestrictedstockunits" abstract="false" name="Grantdatefairvalueperformancerestrictedstockunits" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_Grantdatefairvalueofrestrictedstockunitsgranted" abstract="false" name="Grantdatefairvalueofrestrictedstockunitsgranted" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_ModifiedPRSUIncrementalExpense" abstract="false" name="ModifiedPRSUIncrementalExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_RestrictedStockAndPerformanceRestrictedStockUnitsMember" abstract="true" name="RestrictedStockAndPerformanceRestrictedStockUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_Changeinunitsduetoperformanceexpectations" abstract="false" name="Changeinunitsduetoperformanceexpectations" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="icui_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceExpectationAdditionsIntrinsicValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceExpectationAdditionsIntrinsicValue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <xs:element id="icui_ESPPOriginalIssuance" abstract="false" name="ESPPOriginalIssuance" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="icui_ESPPAnnualIssuanceIncreaseLimit" abstract="false" name="ESPPAnnualIssuanceIncreaseLimit" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="icui_Hedge5Member" abstract="true" name="Hedge5Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_Srt_MultipleCurrencyAxisAxis" abstract="true" name="Srt_MultipleCurrencyAxisAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="icui_Srt_MultipleCurrencyAxisDomain" abstract="true" name="Srt_MultipleCurrencyAxisDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_OtherCurrenciesMember" abstract="true" name="OtherCurrenciesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_UsGaap_InterestRateSwap2Member" abstract="true" name="UsGaap_InterestRateSwap2Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_UsGaap_InterestRateSwap3Member" abstract="true" name="UsGaap_InterestRateSwap3Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="icui_DerivativeInterestRateFloor" abstract="false" name="DerivativeInterestRateFloor" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="icui_OwnershipRequirementForEarnoutPayment" abstract="false" name="OwnershipRequirementForEarnoutPayment" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="icui_ForeignDistibutorMember" abstract="true" name="ForeignDistibutorMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_CurrencyTranslationOnEarnOut" abstract="false" name="CurrencyTranslationOnEarnOut" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_FairValueMeasurementsWithUnobservableInputsReconciliationOther" abstract="false" name="FairValueMeasurementsWithUnobservableInputsReconciliationOther" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_EarnoutliabilityMember" abstract="true" name="EarnoutliabilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_EarnOutLiabilitySTMember" abstract="true" name="EarnOutLiabilitySTMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="icui_PrepaidAssetsCurrentTable" abstract="true" name="PrepaidAssetsCurrentTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="icui_PrepaidAssetsCurrentLineItems" abstract="true" name="PrepaidAssetsCurrentLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="icui_PrepaidVendorExpenses" abstract="false" name="PrepaidVendorExpenses" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_Prepaidinsuranceandpropertytaxes" abstract="false" name="Prepaidinsuranceandpropertytaxes" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_Prepaidothertaxes" abstract="false" name="Prepaidothertaxes" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_Deferredtaxcharge" abstract="false" name="Deferredtaxcharge" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_PrepaidNoncurrentAssetsTable" abstract="true" name="PrepaidNoncurrentAssetsTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="icui_PrepaidNoncurrentAssetsLineItems" abstract="true" name="PrepaidNoncurrentAssetsLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="icui_SpareParts" abstract="false" name="SpareParts" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_ScheduleOfAccruedLiabilitiesTable" abstract="true" name="ScheduleOfAccruedLiabilitiesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="icui_ScheduleOfAccruedLiabilitiesLineItems" abstract="true" name="ScheduleOfAccruedLiabilitiesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="icui_AccruedSalariesAndBenefits" abstract="false" name="AccruedSalariesAndBenefits" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_AccruedProductFieldAction." abstract="false" name="AccruedProductFieldAction." nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_AccruedLiabilityItalyPaymentScheme" abstract="false" name="AccruedLiabilityItalyPaymentScheme" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_Accruedlegalfees" abstract="false" name="Accruedlegalfees" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_Accruedsalestaxes" abstract="false" name="Accruedsalestaxes" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_Accruedothertaxes" abstract="false" name="Accruedothertaxes" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_Outsidesalescommissions" abstract="false" name="Outsidesalescommissions" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_Accruedfreight" abstract="false" name="Accruedfreight" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_AccruedAuditFees" abstract="false" name="AccruedAuditFees" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_OtherLiabilitiesTable" abstract="true" name="OtherLiabilitiesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="icui_OtherLiabilitiesLineItems" abstract="true" name="OtherLiabilitiesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="icui_TotalSeniorSecuredCreditFacility" abstract="false" name="TotalSeniorSecuredCreditFacility" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_RevolverSubLimits" abstract="false" name="RevolverSubLimits" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_InterestPercentageAddedToFederalFundsRate" abstract="false" name="InterestPercentageAddedToFederalFundsRate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="icui_InterestPercentageAddedToBaseRate" abstract="false" name="InterestPercentageAddedToBaseRate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="icui_TerSOFRInterestRateAdjustmentForBaseRateLoans" abstract="false" name="TerSOFRInterestRateAdjustmentForBaseRateLoans" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="icui_TermSOFRAdjustmentInterestRateAdjustmentTermSOFRLoans" abstract="false" name="TermSOFRAdjustmentInterestRateAdjustmentTermSOFRLoans" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="icui_ApplicableMarginBaseRateLoans" abstract="false" name="ApplicableMarginBaseRateLoans" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="icui_ApplicableMarginTermSOFRLoans" abstract="false" name="ApplicableMarginTermSOFRLoans" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="icui_TermAPrincipalPaymentFirst2Years" abstract="false" name="TermAPrincipalPaymentFirst2Years" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="icui_TermAPrincipalPaymentYear3And4" abstract="false" name="TermAPrincipalPaymentYear3And4" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="icui_TermAPrincipalPaymentInYear5" abstract="false" name="TermAPrincipalPaymentInYear5" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="icui_TermLoanBPrincipalPayment" abstract="false" name="TermLoanBPrincipalPayment" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="icui_LeverageRatioCalculationCeilingSubtractedAmount" abstract="false" name="LeverageRatioCalculationCeilingSubtractedAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_InterestRatesTable" abstract="true" name="InterestRatesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="icui_InterestRatesLineItems" abstract="true" name="InterestRatesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="icui_LongTermDebtTypeTable" abstract="true" name="LongTermDebtTypeTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="icui_TermLoanAxis" abstract="true" name="TermLoanAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="icui_TermLoanDomain" abstract="true" name="TermLoanDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_TermLoanAMember" abstract="true" name="TermLoanAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_TermLoanBMember" abstract="true" name="TermLoanBMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_LongTermDebtTypeLineItems" abstract="true" name="LongTermDebtTypeLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="icui_ApplicableMarginBasedOnLeverageRatioTable" abstract="true" name="ApplicableMarginBasedOnLeverageRatioTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="icui_LeverageRatioLevelAxis" abstract="true" name="LeverageRatioLevelAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="icui_LeverageRatioLevelDomain" abstract="true" name="LeverageRatioLevelDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_Greaterthan400to100Member" abstract="true" name="Greaterthan400to100Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_LessThanOrEqualTo400To100ButGreaterThan300To100Member" abstract="true" name="LessThanOrEqualTo400To100ButGreaterThan300To100Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_LessThanOrEqual300To100ButGreaterThan250to100Member" abstract="true" name="LessThanOrEqual300To100ButGreaterThan250to100Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_LessThanOrEqualTo250To100ButGreaterThan200To100Member" abstract="true" name="LessThanOrEqualTo250To100ButGreaterThan200To100Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_LessThanOrEqualTo200To100Member" abstract="true" name="LessThanOrEqualTo200To100Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_ApplicableMarginBasedOnLeverageRatioLineItems" abstract="true" name="ApplicableMarginBasedOnLeverageRatioLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="icui_GreaterThan275To100Member" abstract="true" name="GreaterThan275To100Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_LessThan275To100Member" abstract="true" name="LessThan275To100Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_EffectiveIncomeTaxRateReconciliationTransactionCost" abstract="false" name="EffectiveIncomeTaxRateReconciliationTransactionCost" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_EffectiveIncomeTaxRateReconciliationContingentConsideration" abstract="false" name="EffectiveIncomeTaxRateReconciliationContingentConsideration" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_Effectiveincometaxreconciliationnondeductiblecompensation" abstract="false" name="Effectiveincometaxreconciliationnondeductiblecompensation" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_EffectiveIncomeTaxRateReconciliationTaxReserveReleases" abstract="false" name="EffectiveIncomeTaxRateReconciliationTaxReserveReleases" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_EffectiveTaxRateReconcilationTransactionCostPercent" abstract="false" name="EffectiveTaxRateReconcilationTransactionCostPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="icui_EffectiveIncomeTaxRateReconciliationContingentConsiderationPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationContingentConsiderationPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="icui_Effectivetaxratereconciliationnondeductiblecomppercent" abstract="false" name="Effectivetaxratereconciliationnondeductiblecomppercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="icui_EffectiveIncomeTaxRateReconciliationTaxReserveReleasesPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationTaxReserveReleasesPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="icui_EffectiveIncomeTaxRateReconciliationLegalSettlementPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationLegalSettlementPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="icui_EffectiveIncomeTaxRateReconciliationLegalSettlement" abstract="false" name="EffectiveIncomeTaxRateReconciliationLegalSettlement" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_IncomeTaxDisclosuredeferredtaxesAbstract" abstract="true" name="IncomeTaxDisclosuredeferredtaxesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="icui_DeferredtaxassetsandliabilitiesTable" abstract="true" name="DeferredtaxassetsandliabilitiesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="icui_NonCurrentDeferredTaxAssetGrossTotalMember" abstract="true" name="NonCurrentDeferredTaxAssetGrossTotalMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_NoncurrentDeferredTaxLiabilityMember" abstract="true" name="NoncurrentDeferredTaxLiabilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_DeferredtaxassetsandliabilitiesLineItems" abstract="true" name="DeferredtaxassetsandliabilitiesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="icui_Noncurrentdeferredtaxassetacquiredfuturetaxdeductions" abstract="false" name="Noncurrentdeferredtaxassetacquiredfuturetaxdeductions" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_NoncurrentDeferredTaxAssetTaxCreditsState" abstract="false" name="NoncurrentDeferredTaxAssetTaxCreditsState" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_DeferredTaxAssetSection163j" abstract="false" name="DeferredTaxAssetSection163j" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_Noncurrentdeferredtaxassetchargebacksdiscountscustomerconcessions" abstract="false" name="Noncurrentdeferredtaxassetchargebacksdiscountscustomerconcessions" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_Noncurrentdeferredtaxasset" abstract="false" name="Noncurrentdeferredtaxasset" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_NoncurrentDeferredTaxLiabilityStateIncomeTaxes" abstract="false" name="NoncurrentDeferredTaxLiabilityStateIncomeTaxes" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_NoncurrentDeferredTaxLiabilityDepreciationAndAmortization" abstract="false" name="NoncurrentDeferredTaxLiabilityDepreciationAndAmortization" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_OperatinglosscarryforwardsAbstract" abstract="true" name="OperatinglosscarryforwardsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="icui_UsGaap_DeferredTaxAssetsOperatingLossCarryforwardsNet" abstract="false" name="UsGaap_DeferredTaxAssetsOperatingLossCarryforwardsNet" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_UnrecognizedTaxBenefitsRollForwardRollForward" abstract="true" name="UnrecognizedTaxBenefitsRollForwardRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="icui_Unrecognizedtaxbenefitspotentialdecreasefromlapseofstatuteoflimitations" abstract="false" name="Unrecognizedtaxbenefitspotentialdecreasefromlapseofstatuteoflimitations" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_UsGaap_ReleasedUnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense" abstract="false" name="UsGaap_ReleasedUnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_UsGaap_ReleasedUnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense" abstract="false" name="UsGaap_ReleasedUnrecognizedTaxBenefitsIncomeTaxPenaltiesExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_AccountsReceivablePurchaseProgram" abstract="false" name="AccountsReceivablePurchaseProgram" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_TradeReceivablesSold" abstract="false" name="TradeReceivablesSold" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_CashReceivedInExchangeForTradeReceivablesSold" abstract="false" name="CashReceivedInExchangeForTradeReceivablesSold" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_WarrantyAndReturnReserveInventory" abstract="false" name="WarrantyAndReturnReserveInventory" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_WarrantyAndReturnReserveCosts" abstract="false" name="WarrantyAndReturnReserveCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_WarrantyAndReturnReserveInventoryChargedToOtherAccounts" abstract="false" name="WarrantyAndReturnReserveInventoryChargedToOtherAccounts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_WarrantyAndReturnReserveInventoryWriteOffs" abstract="false" name="WarrantyAndReturnReserveInventoryWriteOffs" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
