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  <xsd:element id="masi_ComponentsOfOtherLiabilitiesLongTermTableTableTextBlock" name="ComponentsOfOtherLiabilitiesLongTermTableTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="masi_ConcentrationRiskARCustomer" name="ConcentrationRiskARCustomer" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="masi_ConcentrationRiskJustintimeDistributors" name="ConcentrationRiskJustintimeDistributors" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="masi_ConcentrationRiskLonglivedAssetGeographicAreaPercentage" name="ConcentrationRiskLonglivedAssetGeographicAreaPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="masi_ContingenciesAndCommitmentsLineItems" name="ContingenciesAndCommitmentsLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="masi_ContingenciesAndCommitmentsTable" name="ContingenciesAndCommitmentsTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="masi_CumulativeEffectonRetainedEarningsNetofTaxDeferredTaxAssets" name="CumulativeEffectonRetainedEarningsNetofTaxDeferredTaxAssets" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="masi_CumulativeEffectonRetainedEarningsNetofTaxDeferredTaxDeferredRevenueandContractRelatedLiabilities" name="CumulativeEffectonRetainedEarningsNetofTaxDeferredTaxDeferredRevenueandContractRelatedLiabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="masi_CumulativeEffectonRetainedEarningsNetofTaxLeaseReceivable" name="CumulativeEffectonRetainedEarningsNetofTaxLeaseReceivable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="masi_CumulativeEffectonRetainedEarningsNetofTaxLeasedEquipment" name="CumulativeEffectonRetainedEarningsNetofTaxLeasedEquipment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="masi_CumulativeEffectonRetainedEarningsNetofTaxOtherCurrentLiabilities" name="CumulativeEffectonRetainedEarningsNetofTaxOtherCurrentLiabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="masi_CumulativeEffectonRetainedEarningsNetofTaxROUAssetsandLeaseLiabilities" name="CumulativeEffectonRetainedEarningsNetofTaxROUAssetsandLeaseLiabilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="masi_DeferredCostofGoodsSoldAccumulatedAmortization" name="DeferredCostofGoodsSoldAccumulatedAmortization" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="masi_DeferredCostofGoodsSoldAmortization" name="DeferredCostofGoodsSoldAmortization" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="masi_DeferredCostsandOtherContractAssetsPolicyTextBlock" name="DeferredCostsandOtherContractAssetsPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="masi_DeferredCostsandOtherContractAssetsTextBlock" name="DeferredCostsandOtherContractAssetsTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="masi_DeferredTaxAdjustmentfromPurchasePriceAllocation" name="DeferredTaxAdjustmentfromPurchasePriceAllocation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="masi_DemonstrationUnitsMember" name="DemonstrationUnitsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="masi_DocumentAndEntityInformationAbstract" name="DocumentAndEntityInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="masi_EmploymentAgreementSeveranceBenefitsSpecialPaymentQualifyingTermination" name="EmploymentAgreementSeveranceBenefitsSpecialPaymentQualifyingTermination" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="masi_EmploymentAgreementSeveranceTerms" name="EmploymentAgreementSeveranceTerms" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="masi_Equipmentleasedtocustomers" name="Equipmentleasedtocustomers" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="masi_EstimateofAnnualPreventableHospitalDeathsPreventedby2020" name="EstimateofAnnualPreventableHospitalDeathsPreventedby2020" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="masi_FurnitureandOfficeEquipmentMember" name="FurnitureandOfficeEquipmentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="masi_GoodwillAbstract" name="GoodwillAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="masi_IncomeTaxPayableNoncurrent" name="IncomeTaxPayableNoncurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="masi_LesseeOperatingLeaseBalanceSheetClassificationTableTextBlock" name="LesseeOperatingLeaseBalanceSheetClassificationTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="masi_LossContingencyDamagesSoughtValuePerViolation" name="LossContingencyDamagesSoughtValuePerViolation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="masi_Masimovs.PhysiciansHealthsourceInc.Member" name="Masimovs.PhysiciansHealthsourceInc.Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="masi_MasimovsFormerAgencyTenderMember" name="MasimovsFormerAgencyTenderMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="masi_NumberofSourcesofProductRevenue" name="NumberofSourcesofProductRevenue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="masi_OtherAssetsLongtermAbstract" name="OtherAssetsLongtermAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="masi_OtherLiabilitiesLongTermAbstract" name="OtherLiabilitiesLongTermAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="masi_PercentageOfRevenueOneCustomer" name="PercentageOfRevenueOneCustomer" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="masi_PercentageOfRevenueTwoCustomer" name="PercentageOfRevenueTwoCustomer" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="masi_PercentageofAccountsReceivableBalance" name="PercentageofAccountsReceivableBalance" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="masi_PercentageofRevenueCustomerConcentration" name="PercentageofRevenueCustomerConcentration" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="masi_PrepaidDiscount" name="PrepaidDiscount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="masi_Proceedsfromstockoptionsexercisedunsettledatperiodend" name="Proceedsfromstockoptionsexercisedunsettledatperiodend" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="masi_PropertiesPurchased" name="PropertiesPurchased" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="masi_PropertyPlantandEquipmentOccupiedSquareFeet" name="PropertyPlantandEquipmentOccupiedSquareFeet" nillable="true" substitutionGroup="xbrli:item" type="num:areaItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="masi_ReimbursementFeeMember" name="ReimbursementFeeMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="masi_Royalty" name="Royalty" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="masi_RoyaltyRevenueNumberofDaysRoyaltyRevenueisAdjustedSubsequenttoQuarterEnd" name="RoyaltyRevenueNumberofDaysRoyaltyRevenueisAdjustedSubsequenttoQuarterEnd" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="masi_Royaltyrevenueandother" name="Royaltyrevenueandother" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="masi_SaleTypeLeaseReceivableTableTextBlock" name="SaleTypeLeaseReceivableTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="masi_SalestypeleaseAllowanceforCreditLoss" name="SalestypeleaseAllowanceforCreditLoss" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="masi_SeverancePlanParticipationAgreements" name="SeverancePlanParticipationAgreements" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="masi_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsExercisedinPeriod" name="SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsExercisedinPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="masi_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsExpiredWeighedAverageGrantDateFairValue" name="SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsExpiredWeighedAverageGrantDateFairValue" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="duration" />
  <xsd:element id="masi_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsExpiredinPeriod" name="SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsExpiredinPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="masi_ShortTermInvestmentsPolicyTextBlock" name="ShortTermInvestmentsPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="masi_SummaryOfSignificantAccountingPoliciesLineItems" name="SummaryOfSignificantAccountingPoliciesLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="masi_SummaryOfSignificantAccountingPoliciesTable" name="SummaryOfSignificantAccountingPoliciesTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="masi_SupplementalUnemploymentBenefitsSeveranceBenefitsRequiredNoticeofResignation" name="SupplementalUnemploymentBenefitsSeveranceBenefitsRequiredNoticeofResignation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="masi_TaxesCollectedFromCustomersAndRemittedToGovernmentalAuthoritiesPolicyPolicyTextBlock" name="TaxesCollectedFromCustomersAndRemittedToGovernmentalAuthoritiesPolicyPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="masi_UnrecognizedTaxBenefitsLiabilitiesNoncurrent" name="UnrecognizedTaxBenefitsLiabilitiesNoncurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="masi_WarrantyPeriodForDefectsInMaterialAndWorkmanship" name="WarrantyPeriodForDefectsInMaterialAndWorkmanship" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
</xsd:schema>
