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  <xs:element id="icui_Optiontoextendinyears" abstract="false" name="Optiontoextendinyears" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="icui_ComputerEquipmentAndSoftwareMember" abstract="true" name="ComputerEquipmentAndSoftwareMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="icui_LongtermInvestmentsDomain" abstract="true" name="LongtermInvestmentsDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="icui_TermLoanDomain" abstract="true" name="TermLoanDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="icui_DocumentAndEntityInformationAbstract" abstract="true" name="DocumentAndEntityInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <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_Deferredtaxcharge" abstract="false" name="Deferredtaxcharge" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_Restructuringandstrategictransaction" abstract="false" name="Restructuringandstrategictransaction" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_IVSolutionsMember" abstract="true" name="IVSolutionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="icui_AssetsandLiabilitiesLeasesTableTextBlock" abstract="false" name="AssetsandLiabilitiesLeasesTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <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_InvestmentsInDebtAndMarketableEquitySecuritiesAndEquityMethodInvestmentsTextBlock" abstract="false" name="InvestmentsInDebtAndMarketableEquitySecuritiesAndEquityMethodInvestmentsTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="icui_ForeignMember" abstract="true" name="ForeignMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <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_PreconsummationMember" abstract="true" name="PreconsummationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="icui_EquipmentrevenueMember" abstract="true" name="EquipmentrevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <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_Hedge3MemberMember" abstract="true" name="Hedge3MemberMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="icui_TimingDomain" abstract="true" name="TimingDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="icui_FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransferOutLevel3" abstract="false" name="FairValueMeasurementWithUnobservableInputsReconciliationLiabilityTransferOutLevel3" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="icui_CriticalCareMember" abstract="true" name="CriticalCareMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <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_EarnoutliabilityMember" abstract="true" name="EarnoutliabilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="icui_ContractassetandliabilitybalancesTable" abstract="true" name="ContractassetandliabilitybalancesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
</xs:schema>
