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  <xs:element id="masi_GoodwillAbstract" abstract="true" name="GoodwillAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="masi_LossContingencyDamagesSoughtValuePerViolation" abstract="false" name="LossContingencyDamagesSoughtValuePerViolation" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="masi_LikeMindedLabsMember" abstract="true" name="LikeMindedLabsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="masi_ConcentrationRiskARCustomer" abstract="false" name="ConcentrationRiskARCustomer" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="masi_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsExpiredinPeriod" abstract="false" name="SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsExpiredinPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="masi_Equipmentleasedtocustomers" abstract="false" name="Equipmentleasedtocustomers" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="masi_ComponentsOfOtherLiabilitiesLongTermTableTableTextBlock" abstract="false" name="ComponentsOfOtherLiabilitiesLongTermTableTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType"/>
  <xs:element id="masi_PercentageOfRevenueOneCustomer" abstract="false" name="PercentageOfRevenueOneCustomer" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="num:percentItemType"/>
  <xs:element id="masi_PercentageofAccountsReceivableBalance" abstract="false" name="PercentageofAccountsReceivableBalance" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="num:percentItemType"/>
  <xs:element id="masi_PercentageofRevenueCustomerConcentration" abstract="false" name="PercentageofRevenueCustomerConcentration" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="num:percentItemType"/>
  <xs:element id="masi_MinorityInterestCurrentLiabilities" abstract="false" name="MinorityInterestCurrentLiabilities" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="masi_DemonstrationUnitsMember" abstract="true" name="DemonstrationUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="masi_NotforProfitOrganizationMember" abstract="true" name="NotforProfitOrganizationMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="masi_LesseeOperatingLeaseBalanceSheetClassificationTableTextBlock" abstract="false" name="LesseeOperatingLeaseBalanceSheetClassificationTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType"/>
  <xs:element id="masi_SeverancePlanParticipationAgreements" abstract="false" name="SeverancePlanParticipationAgreements" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="masi_LeasedPropertyMember" abstract="true" name="LeasedPropertyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="masi_Settlementofpromissorynoteinconnectionwithacquisitionoptionexercise" abstract="false" name="Settlementofpromissorynoteinconnectionwithacquisitionoptionexercise" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="masi_SaleTypeLeaseReceivableTableTextBlock" abstract="false" name="SaleTypeLeaseReceivableTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType"/>
  <xs:element id="masi_ConcentrationRiskJustintimeDistributors" abstract="false" name="ConcentrationRiskJustintimeDistributors" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="masi_IncomeTaxPayableNoncurrent" abstract="false" name="IncomeTaxPayableNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="masi_PrepaidDiscount" abstract="false" name="PrepaidDiscount" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="masi_DeferredCostsandOtherContractAssetsTextBlock" abstract="false" name="DeferredCostsandOtherContractAssetsTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType"/>
  <xs:element id="masi_UnrecognizedTaxBenefitsLiabilitiesNoncurrent" abstract="false" name="UnrecognizedTaxBenefitsLiabilitiesNoncurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="masi_FurnitureandOfficeEquipmentMember" abstract="true" name="FurnitureandOfficeEquipmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="masi_SummaryOfSignificantAccountingPoliciesLineItems" abstract="true" name="SummaryOfSignificantAccountingPoliciesLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="masi_Proceedsfromstockoptionsexercisedunsettledatperiodend" abstract="false" name="Proceedsfromstockoptionsexercisedunsettledatperiodend" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="masi_SummaryOfSignificantAccountingPoliciesTable" abstract="true" name="SummaryOfSignificantAccountingPoliciesTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="masi_ShippingandHandlingcostsandFeesPolicyTextBlock" abstract="false" name="ShippingandHandlingcostsandFeesPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType"/>
  <xs:element id="masi_OperatingLeaseRightOfUseAssetAccumulatedAmortization" abstract="false" name="OperatingLeaseRightOfUseAssetAccumulatedAmortization" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="masi_AcquiredTechnologyMember" abstract="true" name="AcquiredTechnologyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="masi_NumberofSourcesofProductRevenue" abstract="false" name="NumberofSourcesofProductRevenue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
</xs:schema>
