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  <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_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_Optiontoextendinyears" abstract="false" name="Optiontoextendinyears" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="icui_TotalAntiDilutiveStockOptionsAndRestrictedStockAwards" abstract="false" name="TotalAntiDilutiveStockOptionsAndRestrictedStockAwards" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <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_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_Swap3TermLoanABMember" abstract="true" name="Swap3TermLoanABMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_Swap3Member" abstract="true" name="Swap3Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_InterestRateSwapEndingNotionalValue" abstract="false" name="InterestRateSwapEndingNotionalValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_DerivativeVariableRateFloor" abstract="false" name="DerivativeVariableRateFloor" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <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_InternationalDistributorMember" abstract="true" name="InternationalDistributorMember" 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_ContingentConsiderationGrossST" abstract="false" name="ContingentConsiderationGrossST" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_ContingentConsiderationGrossLT" abstract="false" name="ContingentConsiderationGrossLT" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_OwnershipRequirementForEarnoutPayment" abstract="false" name="OwnershipRequirementForEarnoutPayment" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="icui_SmithsMedicalForeignInfusionSystemsSupplierMember" abstract="true" name="SmithsMedicalForeignInfusionSystemsSupplierMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_FairValueMeasurementWithUnobservableInputsReconciliationOther" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationOther" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_STEarnoutLiabilityMember" abstract="true" name="STEarnoutLiabilityMember" 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_ClassificationAxis" abstract="true" name="ClassificationAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="icui_ClassificationDomain" abstract="true" name="ClassificationDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_CurrentMember" abstract="true" name="CurrentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="icui_NoncurrentMember" abstract="true" name="NoncurrentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <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_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_SpareParts" abstract="false" name="SpareParts" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_LandBuildingAndBuildingImprovementsGross" abstract="false" name="LandBuildingAndBuildingImprovementsGross" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_MoldsGross" abstract="false" name="MoldsGross" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_ComputerEquipmentAndSoftwareGross" abstract="false" name="ComputerEquipmentAndSoftwareGross" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_InstrumentsPlacedWithCustomersGross" abstract="false" name="InstrumentsPlacedWithCustomersGross" nillable="true" xbrli:periodType="instant" 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_UnfavorablecontractliabilityST" abstract="false" name="UnfavorablecontractliabilityST" 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_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_Outsidesalescommissions" abstract="false" name="Outsidesalescommissions" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_FieldServiceCorrectiveAction" abstract="false" name="FieldServiceCorrectiveAction" 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_ReturntoProvision" abstract="false" name="ReturntoProvision" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_ContingentConsiderationTaxExpense" abstract="false" name="ContingentConsiderationTaxExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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_LeverageRatioCalculationCeilingSubtractedAmount" abstract="false" name="LeverageRatioCalculationCeilingSubtractedAmount" 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_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_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_ApplicableMarginBasedOnLeverageRatioLineItems" abstract="true" name="ApplicableMarginBasedOnLeverageRatioLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <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_TreasuryStockPurchasePlan" abstract="false" name="TreasuryStockPurchasePlan" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_SmithsGroupOwnershipAcquisitionSharesIssued" abstract="false" name="SmithsGroupOwnershipAcquisitionSharesIssued" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="icui_SmithsGroupOwnershipRequiredForBoardRepresentation" abstract="false" name="SmithsGroupOwnershipRequiredForBoardRepresentation" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <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_EstimatedProceedsLLCEquityInterest" abstract="false" name="EstimatedProceedsLLCEquityInterest" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
