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  <xs:element id="isrg_IncomeTaxBenefitDiscreteItemOneTimeTaxBenefits" abstract="false" name="IncomeTaxBenefitDiscreteItemOneTimeTaxBenefits" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="isrg_SalestypeLeaseDeferredSellingProfit" abstract="false" name="SalestypeLeaseDeferredSellingProfit" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="isrg_ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesDomain" abstract="true" name="ScheduleOfAvailableForSaleAndHeldToMaturitySecuritiesDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_IncomeTaxExaminationMinimumLikelihoodOfTaxBenefitsBeingRealizedUponSettlement" abstract="false" name="IncomeTaxExaminationMinimumLikelihoodOfTaxBenefitsBeingRealizedUponSettlement" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="isrg_ChindexMember" abstract="true" name="ChindexMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_EquipmentAndFurnitureMember" abstract="true" name="EquipmentAndFurnitureMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_ComputerAndOfficeEquipment" abstract="false" name="ComputerAndOfficeEquipment" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="isrg_OfferingPeriodNumberofPurchasePeriodsOfferingDividedIntoEmployeeStockPurchasePlans" abstract="false" name="OfferingPeriodNumberofPurchasePeriodsOfferingDividedIntoEmployeeStockPurchasePlans" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="isrg_CostOfSalesServiceMember" abstract="true" name="CostOfSalesServiceMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_AugustGrantMember" abstract="true" name="AugustGrantMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageExercisePriceAbstract" abstract="true" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsWeightedAverageExercisePriceAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="isrg_SchllyFiberopticGmbHMember" abstract="true" name="SchllyFiberopticGmbHMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_EffectiveIncomeTaxRateReconciliationForeignTaxReformAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationForeignTaxReformAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="isrg_BusinessCombinationContingentConsiderationArrangementsUndiscountedExpectedOutcome" abstract="false" name="BusinessCombinationContingentConsiderationArrangementsUndiscountedExpectedOutcome" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="isrg_DerivativeInstrumentDesignationAsCashFlowHedgesDeDesignationPeriod" abstract="false" name="DerivativeInstrumentDesignationAsCashFlowHedgesDeDesignationPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="isrg_HologicIncMember" abstract="true" name="HologicIncMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_CashandCashEquivalentsandDebtSecuritiesAvailableforsaleFairValue" abstract="false" name="CashandCashEquivalentsandDebtSecuritiesAvailableforsaleFairValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="isrg_ScheduleOfAvailableForSaleSecuritiesAxis" abstract="true" name="ScheduleOfAvailableForSaleSecuritiesAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="isrg_FebruaryGrantMember" abstract="true" name="FebruaryGrantMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_AuditInformationAbstract" abstract="true" name="AuditInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="isrg_ShareBasedCompensationArrangementbySharebasedPaymentAwardFairValueAssumptionsMarketbasedImpliedVolatilityPeriod" abstract="false" name="ShareBasedCompensationArrangementbySharebasedPaymentAwardFairValueAssumptionsMarketbasedImpliedVolatilityPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="isrg_AmendedAndRestatedTwentyTenStockIncentivePlanMember" abstract="true" name="AmendedAndRestatedTwentyTenStockIncentivePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_AggregateReductionInCommonStockDuringStockRepurchases" abstract="false" name="AggregateReductionInCommonStockDuringStockRepurchases" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="isrg_RangeSevenMember" abstract="true" name="RangeSevenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_StockRepurchaseProgramincreasedtoauthorizedamount" abstract="false" name="StockRepurchaseProgramincreasedtoauthorizedamount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="isrg_CostOfSalesProductMember" abstract="true" name="CostOfSalesProductMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_InitialGrantOptionsMember" abstract="true" name="InitialGrantOptionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_AssetsAndLiabilitiesLesseeTableTextBlock" abstract="false" name="AssetsAndLiabilitiesLesseeTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="isrg_DeferredPurchaseConsiderationPayments" abstract="false" name="DeferredPurchaseConsiderationPayments" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="isrg_ForeignCurrencyAndOtherHedgingInstrumentsPolicyTextBlock" abstract="false" name="ForeignCurrencyAndOtherHedgingInstrumentsPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="isrg_InstrumentsandAccessoriesMember" abstract="true" name="InstrumentsandAccessoriesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_SharebasedCompensationArrangementbySharebasedPaymentAwardAwardVestingRightsPercentageVestingPerMonthAfterSixMonthsofService" abstract="false" name="SharebasedCompensationArrangementbySharebasedPaymentAwardAwardVestingRightsPercentageVestingPerMonthAfterSixMonthsofService" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="isrg_InitialRSUgrantsMember" abstract="true" name="InitialRSUgrantsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_MinimumMonthsEmployedPerYearToParticipateInEmployeeStockPurchasePlan" abstract="false" name="MinimumMonthsEmployedPerYearToParticipateInEmployeeStockPurchasePlan" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="isrg_RangeSixMember" abstract="true" name="RangeSixMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_AllowanceForSalesReturnsAndDoubtfulAccountsPolicyTextBlock" abstract="false" name="AllowanceForSalesReturnsAndDoubtfulAccountsPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="isrg_AmendedAndRestatedTwentyZeroNineStockIncentivePlanMember" abstract="true" name="AmendedAndRestatedTwentyZeroNineStockIncentivePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_PurchasedSoftwareMember" abstract="true" name="PurchasedSoftwareMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_TotalRevenueMember" abstract="true" name="TotalRevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_RangeThreeMember" abstract="true" name="RangeThreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_ShareBasedCompensationArrangementbySharebasedPaymentAwardFairValueAssumptionsMarketbasedImpliedVolatilityPercent" abstract="false" name="ShareBasedCompensationArrangementbySharebasedPaymentAwardFairValueAssumptionsMarketbasedImpliedVolatilityPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="isrg_StockOptionsGrantedInitialVestingPeriod" abstract="false" name="StockOptionsGrantedInitialVestingPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="isrg_LessorSalesTypeLeaseLeaseIncomeTableTextBlock" abstract="false" name="LessorSalesTypeLeaseLeaseIncomeTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="isrg_EquitySecuritiesFVNISalesPurchasesAndOtherAdjustments" abstract="false" name="EquitySecuritiesFVNISalesPurchasesAndOtherAdjustments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="isrg_ConsolidatingReportingDomain" abstract="true" name="ConsolidatingReportingDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_SalesTypeLeaseNetInvestmentInLeaseCurrent" abstract="false" name="SalesTypeLeaseNetInvestmentInLeaseCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="isrg_RangeNineMember" abstract="true" name="RangeNineMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_LongLivedAssetsMaintainedInTheUnitedStatesPercent" abstract="false" name="LongLivedAssetsMaintainedInTheUnitedStatesPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="isrg_AccountsReceivableDeferredLeaseBillingAndExtendedPaymentsOutstanding" abstract="false" name="AccountsReceivableDeferredLeaseBillingAndExtendedPaymentsOutstanding" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="isrg_DepreciationandGainLossonDispositionofPropertyPlantEquipment" abstract="false" name="DepreciationandGainLossonDispositionofPropertyPlantEquipment" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="isrg_EmployeesMember" abstract="true" name="EmployeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_HighCreditRatingMember" abstract="true" name="HighCreditRatingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_BusinessCombinationConsiderationTransferredPresentValueofFutureCashPayments" abstract="false" name="BusinessCombinationConsiderationTransferredPresentValueofFutureCashPayments" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="isrg_SharebasedCompensationArrangementbySharebasedPaymentAwardAwardVestingRightsPercentageVestingPerMonthAfterOneYear" abstract="false" name="SharebasedCompensationArrangementbySharebasedPaymentAwardAwardVestingRightsPercentageVestingPerMonthAfterOneYear" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="isrg_ManufacturingProcessTechnologyMember" abstract="true" name="ManufacturingProcessTechnologyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_LowCreditRatingMember" abstract="true" name="LowCreditRatingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_TwoThousandEmployeeStockPurchasePlanMember" abstract="true" name="TwoThousandEmployeeStockPurchasePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_DeferredPurchaseConsiderationPaymentsCurrent" abstract="false" name="DeferredPurchaseConsiderationPaymentsCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="isrg_CommonStockRepurchaseProgramMember" abstract="true" name="CommonStockRepurchaseProgramMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_PeriodofLookBackThatCouldCauseOfferingPeriodtoResetEmployeeStockPurchasePlans" abstract="false" name="PeriodofLookBackThatCouldCauseOfferingPeriodtoResetEmployeeStockPurchasePlans" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="isrg_AmountChargedToRetainedEarningsDuringStockRepurchases" abstract="false" name="AmountChargedToRetainedEarningsDuringStockRepurchases" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="isrg_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationExpense" abstract="false" name="BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationExpense" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="isrg_IntangibleAndOtherAssetsNetMember" abstract="true" name="IntangibleAndOtherAssetsNetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_BusinessCombinationContingentConsiderationArrangementsChangeInUndiscountedExpectedOutcome" abstract="false" name="BusinessCombinationContingentConsiderationArrangementsChangeInUndiscountedExpectedOutcome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="isrg_MaximumPercentageOfPayrollDeductionUnderEspp" abstract="false" name="MaximumPercentageOfPayrollDeductionUnderEspp" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="isrg_AnnualGrantOptionsMember" abstract="true" name="AnnualGrantOptionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_SellingGeneralAndAdministrativeMember" abstract="true" name="SellingGeneralAndAdministrativeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_RangeEightMember" abstract="true" name="RangeEightMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_NonvestedStockOptionMember" abstract="true" name="NonvestedStockOptionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_OfferingPeriodPeriodOfferingDividedIntoEmployeeStockPurchasePlans" abstract="false" name="OfferingPeriodPeriodOfferingDividedIntoEmployeeStockPurchasePlans" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="isrg_TwoThousandNonEmployeeDirectorsStockOptionPlanMember" abstract="true" name="TwoThousandNonEmployeeDirectorsStockOptionPlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_OfferingPeriodEmployeeStockPurchasePlans" abstract="false" name="OfferingPeriodEmployeeStockPurchasePlans" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="isrg_ResearchAndDevelopmentMember" abstract="true" name="ResearchAndDevelopmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_SharebasedCompensationArrangementbySharebasedPaymentAwardAwardVestingRightsPercentageVestingUponOneYearofService" abstract="false" name="SharebasedCompensationArrangementbySharebasedPaymentAwardAwardVestingRightsPercentageVestingUponOneYearofService" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="isrg_AwardedtoAxis" abstract="true" name="AwardedtoAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="isrg_IntangibleAndOtherAssets" abstract="false" name="IntangibleAndOtherAssets" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="isrg_ModerateCreditRatingMember" abstract="true" name="ModerateCreditRatingMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_NewHireOptionsMember" abstract="true" name="NewHireOptionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_BroncusHoldingCorporationMember" abstract="true" name="BroncusHoldingCorporationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_DeferredTaxAssetsOperatingLeaseLiability" abstract="false" name="DeferredTaxAssetsOperatingLeaseLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="isrg_AccountsReceivableExtendedPayment" abstract="false" name="AccountsReceivableExtendedPayment" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="isrg_MinimumHoursEmployedPerWeekToParticipateInEmployeeStockPurchasePlan" abstract="false" name="MinimumHoursEmployedPerWeekToParticipateInEmployeeStockPurchasePlan" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="isrg_EnterpriseWideSoftwareMember" abstract="true" name="EnterpriseWideSoftwareMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_AwardedtoDomain" abstract="true" name="AwardedtoDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_SharebasedCompensationArrangementbySharebasedPaymentAwardAwardVestingRightsPercentageVestingUponSixMonthsofService" abstract="false" name="SharebasedCompensationArrangementbySharebasedPaymentAwardAwardVestingRightsPercentageVestingUponSixMonthsofService" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="isrg_SalesTypeLeaseLeaseReceivableExtendedPayment" abstract="false" name="SalesTypeLeaseLeaseReceivableExtendedPayment" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="isrg_RangeTenMember" abstract="true" name="RangeTenMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_RangeFourMember" abstract="true" name="RangeFourMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="isrg_RangeTwoMember" abstract="true" name="RangeTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
