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  <xs:element id="icui_Contractsettlements" abstract="false" name="Contractsettlements" nillable="true" xbrli:periodType="duration" 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_Prepaidothertaxes" abstract="false" name="Prepaidothertaxes" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_Incometaxexaminationincreasedecreaseininterestliabilitiesfromprioryear" abstract="false" name="Incometaxexaminationincreasedecreaseininterestliabilitiesfromprioryear" 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_A2011PlanMember" abstract="true" name="A2011PlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_InterestRatesLineItems" abstract="true" name="InterestRatesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <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_SpareParts" abstract="false" name="SpareParts" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_Changeinunitsduetoperformanceexpectations" abstract="false" name="Changeinunitsduetoperformanceexpectations" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <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_AccountsReceivablePurchaseProgram" abstract="false" name="AccountsReceivablePurchaseProgram" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_LessThanOrEqualTo250To100ButGreaterThan200To100Member" abstract="true" name="LessThanOrEqualTo250To100ButGreaterThan200To100Member" 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_MiscellaneousIncomeNet" abstract="false" name="MiscellaneousIncomeNet" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_TermLoanAxis" abstract="true" name="TermLoanAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="icui_NoncashNonCompeteAgreementWithAssociatedContingentEarnOutLiability" abstract="false" name="NoncashNonCompeteAgreementWithAssociatedContingentEarnOutLiability" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_LongTermDebtTypeTable" abstract="true" name="LongTermDebtTypeTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <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_WarrantyAndReturnReserveInventory" abstract="false" name="WarrantyAndReturnReserveInventory" nillable="true" xbrli:periodType="instant" 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_Optiontoextendinyears" abstract="false" name="Optiontoextendinyears" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="icui_PrepaidAssetsCurrentTable" abstract="true" name="PrepaidAssetsCurrentTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <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_LessThanOrEqualTo400To100ButGreaterThan300To100Member" abstract="true" name="LessThanOrEqualTo400To100ButGreaterThan300To100Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <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_PursuitVascularInc.Member" abstract="true" name="PursuitVascularInc.Member" 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_InterestPercentageAddedToBaseRate" abstract="false" name="InterestPercentageAddedToBaseRate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <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_ApplicableMarginTermSOFRLoans" abstract="false" name="ApplicableMarginTermSOFRLoans" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <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_BusinessCombinationConsiderationCashHoldback" abstract="false" name="BusinessCombinationConsiderationCashHoldback" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_Noncurrentdeferredtaxassetchargebacksdiscountscustomerconcessions" abstract="false" name="Noncurrentdeferredtaxassetchargebacksdiscountscustomerconcessions" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_MexicoPropertyAndEquipmentMember" abstract="true" name="MexicoPropertyAndEquipmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_PrepaidNoncurrentAssetsLineItems" abstract="true" name="PrepaidNoncurrentAssetsLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="icui_InterestRatesTable" abstract="true" name="InterestRatesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <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_NoncurrentDeferredTaxLiabilityMember" abstract="true" name="NoncurrentDeferredTaxLiabilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <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_WarrantyAndReturnReserveInventoryChargedToOtherAccounts" abstract="false" name="WarrantyAndReturnReserveInventoryChargedToOtherAccounts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_ContractassetandliabilitybalancesLineItems" abstract="true" name="ContractassetandliabilitybalancesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <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_LessThanOrEqual300To100ButGreaterThan250to100Member" abstract="true" name="LessThanOrEqual300To100ButGreaterThan250to100Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <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_OtherExpenseIncomeNetAxis" abstract="true" name="OtherExpenseIncomeNetAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="icui_LongTermDebtTypeLineItems" abstract="true" name="LongTermDebtTypeLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="icui_InternationalDistributorMember" abstract="true" name="InternationalDistributorMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_AccruedResearchAndDevelopmentLiability" abstract="false" name="AccruedResearchAndDevelopmentLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_ShortTermContingentConsiderationGross" abstract="false" name="ShortTermContingentConsiderationGross" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_OtherExpenseIncomeNetDomain" abstract="true" name="OtherExpenseIncomeNetDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_VivekJainMember" abstract="true" name="VivekJainMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <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_ForeignMember" abstract="true" name="ForeignMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_RestructuringAdjustmentsSeveranceAndFacility" abstract="false" name="RestructuringAdjustmentsSeveranceAndFacility" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_ScheduleOfAccruedLiabilitiesLineItems" abstract="true" name="ScheduleOfAccruedLiabilitiesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="icui_StockIncentivePlansLineItems" abstract="true" name="StockIncentivePlansLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="icui_EffectiveTaxRateReconcilationTransactionCostPercent" abstract="false" name="EffectiveTaxRateReconcilationTransactionCostPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <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_UnrecognizedTaxBenefitsRollForwardRollForward" abstract="true" name="UnrecognizedTaxBenefitsRollForwardRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <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_EquipmentrevenueMember" abstract="true" name="EquipmentrevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_ScheduleOfAccruedLiabilitiesTable" abstract="true" name="ScheduleOfAccruedLiabilitiesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="icui_OwnershipRequirementForEarnoutPayment" abstract="false" name="OwnershipRequirementForEarnoutPayment" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <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_IncometaxexaminationincreasedecreaseinpenaltiesliabilityfromPriorYear" abstract="false" name="IncometaxexaminationincreasedecreaseinpenaltiesliabilityfromPriorYear" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_NonCurrentDeferredTaxAssetGrossTotalMember" abstract="true" name="NonCurrentDeferredTaxAssetGrossTotalMember" 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_Noncurrentdeferredtaxasset" abstract="false" name="Noncurrentdeferredtaxasset" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_COntractLiabilityRollforwardRollForward" abstract="true" name="COntractLiabilityRollforwardRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" 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_Percentageofrevenue" abstract="false" name="Percentageofrevenue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="icui_OperatinglosscarryforwardsAbstract" abstract="true" name="OperatinglosscarryforwardsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <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_LessThan275To100Member" abstract="true" name="LessThan275To100Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_ContraARItalyPaymentScheme" abstract="false" name="ContraARItalyPaymentScheme" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_ItalyPropertyAndEquipmentMember" abstract="true" name="ItalyPropertyAndEquipmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <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_OtherLATAMMember" abstract="true" name="OtherLATAMMember" 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_ProFormaAdjustmentFinanceCosts" abstract="false" name="ProFormaAdjustmentFinanceCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_UnitedStatespropertyandequipmentMember" abstract="true" name="UnitedStatespropertyandequipmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <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_Grantdatefairvalueofrestrictedstockunitsgranted" abstract="false" name="Grantdatefairvalueofrestrictedstockunitsgranted" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" 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_TermLoanDomain" abstract="true" name="TermLoanDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <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_Sparepartsusage" abstract="false" name="Sparepartsusage" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_ApplicableMarginBasedOnLeverageRatioLineItems" abstract="true" name="ApplicableMarginBasedOnLeverageRatioLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <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_DeferredtaxassetsandliabilitiesTable" abstract="true" name="DeferredtaxassetsandliabilitiesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="icui_ContractassetandliabilitybalancesTable" abstract="true" name="ContractassetandliabilitybalancesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <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_AccruedLiabilityItalyPaymentScheme" abstract="false" name="AccruedLiabilityItalyPaymentScheme" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" 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: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_AccruedSalariesAndBenefits" abstract="false" name="AccruedSalariesAndBenefits" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" 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_Srt_MultipleCurrencyAxisDomain" abstract="true" name="Srt_MultipleCurrencyAxisDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <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_RevenueRecognitionTimingLineItems" abstract="true" name="RevenueRecognitionTimingLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <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_OtherLiabilitiesLineItems" abstract="true" name="OtherLiabilitiesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="icui_TermAPrincipalPaymentYear3And4" abstract="false" name="TermAPrincipalPaymentYear3And4" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <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_AccruedProductFieldAction." abstract="false" name="AccruedProductFieldAction." nillable="true" xbrli:periodType="instant" xbrli:balance="credit" 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_TerSOFRInterestRateAdjustmentForBaseRateLoans" abstract="false" name="TerSOFRInterestRateAdjustmentForBaseRateLoans" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <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_EarnoutliabilityMember" abstract="true" name="EarnoutliabilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <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_InfusionSystemsMember" abstract="true" name="InfusionSystemsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_TermAPrincipalPaymentInYear5" abstract="false" name="TermAPrincipalPaymentInYear5" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="icui_RevenueRecognitionTimingTable" abstract="true" name="RevenueRecognitionTimingTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="icui_CashRemittedToPurchaser" abstract="false" name="CashRemittedToPurchaser" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_TermAPrincipalPaymentFirst2Years" abstract="false" name="TermAPrincipalPaymentFirst2Years" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <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_WarrantyAndReturnReserveCosts" abstract="false" name="WarrantyAndReturnReserveCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_CollaborativeandOtherArrangementsAbstract" abstract="true" name="CollaborativeandOtherArrangementsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <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_StockIncentivePlansTable" abstract="true" name="StockIncentivePlansTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <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_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceExpectationAdditionsIntrinsicValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPerformanceExpectationAdditionsIntrinsicValue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:perShareItemType"/>
  <xs:element id="icui_EffectiveIncomeTaxRateReconciliationTaxReserveReleasesPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationTaxReserveReleasesPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <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_Deferredtaxliabilitychangeinaccountingmethod" abstract="false" name="Deferredtaxliabilitychangeinaccountingmethod" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_NoncurrentDeferredTaxLiabilityDepreciationAndAmortization" abstract="false" name="NoncurrentDeferredTaxLiabilityDepreciationAndAmortization" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_TermSOFRAdjustmentInterestRateAdjustmentTermSOFRLoans" abstract="false" name="TermSOFRAdjustmentInterestRateAdjustmentTermSOFRLoans" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <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_EarnOutLiabilitySTMember" abstract="true" name="EarnOutLiabilitySTMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <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_PrepaidVendorExpenses" abstract="false" name="PrepaidVendorExpenses" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" 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_ForeignInfusionSystemSupplierMember" abstract="true" name="ForeignInfusionSystemSupplierMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <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_SupplementalBalanceSheetInformationLeasesTableTextBlock" abstract="false" name="SupplementalBalanceSheetInformationLeasesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <xs:element id="icui_InformationbyGeographicAreaandCustomerConcentrationTextBlock" abstract="false" name="InformationbyGeographicAreaandCustomerConcentrationTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:textBlockItemType"/>
  <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_InternationalSalesDomain" abstract="true" name="InternationalSalesDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_Accruedlegalfees" abstract="false" name="Accruedlegalfees" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
