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  <xsd:element name="BusinessCombinationContingentConsiderationLiabilityNoncurrentFairValueDisclosure" id="mass_BusinessCombinationContingentConsiderationLiabilityNoncurrentFairValueDisclosure" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
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  <xsd:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumPayoutPercentage" id="mass_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumPayoutPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
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  <xsd:element name="DeviceSalesMember" id="mass_DeviceSalesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
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  <xsd:element name="AllowanceForDoubtfulAccountsReceivableNetRecoveriesDeductions" id="mass_AllowanceForDoubtfulAccountsReceivableNetRecoveriesDeductions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
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  <xsd:element name="BusinessAcquisitionEarnoutRevenueThresholdSharesToBeIssued" id="mass_BusinessAcquisitionEarnoutRevenueThresholdSharesToBeIssued" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="DeferredRevenueAcquiredNetOfRevenueRecognized" id="mass_DeferredRevenueAcquiredNetOfRevenueRecognized" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
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  <xsd:element name="ChangeInFairValueOfContingentConsideration" id="mass_ChangeInFairValueOfContingentConsideration" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="MeasurementInputCompanyEquityVolatilityMember" id="mass_MeasurementInputCompanyEquityVolatilityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="OperatingLeaseInGeorgetownMassachusettsMember" id="mass_OperatingLeaseInGeorgetownMassachusettsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="SingleReportableSegmentMember" id="mass_SingleReportableSegmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ProgramProductAndServiceRevenueMember" id="mass_ProgramProductAndServiceRevenueMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="OemAndFundedPartnershipRevenueMember" id="mass_OemAndFundedPartnershipRevenueMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="GlobalPharmaceuticalIndustrialAndOtherMember" id="mass_GlobalPharmaceuticalIndustrialAndOtherMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="UnitedStatesStateAndLocalMember" id="mass_UnitedStatesStateAndLocalMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="RestOfWorldNationalAndProvincialOrganizationsMember" id="mass_RestOfWorldNationalAndProvincialOrganizationsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
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  <xsd:element name="UsTreasurySecuritiesDueInThreeToTwelveMonthsMember" id="mass_UsTreasurySecuritiesDueInThreeToTwelveMonthsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="DesktopPortfolioMember" id="mass_DesktopPortfolioMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
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  <xsd:element name="DisposalGroupIncludingDiscontinuedOperationResearchAndDevelopmentExpenses" id="mass_DisposalGroupIncludingDiscontinuedOperationResearchAndDevelopmentExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
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  <xsd:element name="DisposalGroupIncludingDiscontinuedOperationsTransactionCosts" id="mass_DisposalGroupIncludingDiscontinuedOperationsTransactionCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
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  <xsd:element name="DisposalGroupIncludingDiscontinuedOperationConsiderationBeforeWorkingCapitalAdjustments" id="mass_DisposalGroupIncludingDiscontinuedOperationConsiderationBeforeWorkingCapitalAdjustments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
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  <xsd:element name="DisposalGroupIncludingDiscontinuedOperationIntangibleAssetsNetExcludingGoodwillAndOtherAssetsNoncurrent" id="mass_DisposalGroupIncludingDiscontinuedOperationIntangibleAssetsNetExcludingGoodwillAndOtherAssetsNoncurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="DisposalGroupIncludingDiscontinuedOperationOperatingLeaseLiability" id="mass_DisposalGroupIncludingDiscontinuedOperationOperatingLeaseLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="DisposalGroupIncludingDiscontinuedOperationNetAssets" id="mass_DisposalGroupIncludingDiscontinuedOperationNetAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="KafManufacturingCompanyMember" id="mass_KafManufacturingCompanyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BusinessAcquisitionContingentConsiderationPayment" id="mass_BusinessAcquisitionContingentConsiderationPayment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="SupplyCommitmentInitialCancellationFee" id="mass_SupplyCommitmentInitialCancellationFee" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="SupplyCommitmentUpfrontCashPaymentReceived" id="mass_SupplyCommitmentUpfrontCashPaymentReceived" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="DiscontinuedOperationGainOnDisposalOfDiscontinuedOperationNetOfTax" id="mass_DiscontinuedOperationGainOnDisposalOfDiscontinuedOperationNetOfTax" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
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  <xsd:element name="TwoThousandTwentySixRevolverMember" id="mass_TwoThousandTwentySixRevolverMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="CapitalizedDebtIssuanceCost" id="mass_CapitalizedDebtIssuanceCost" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="InducementPlanMember" id="mass_InducementPlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NirlabAgMember" id="mass_NirlabAgMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="HoldbackConsiderationPercentage" id="mass_HoldbackConsiderationPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="ConsiderationGeneralHoldbackPeriod" id="mass_ConsiderationGeneralHoldbackPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="MarketableSecuritiesAgencyBondMember" id="mass_MarketableSecuritiesAgencyBondMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="BusinessCombinationCashConsiderationWithHeld" id="mass_BusinessCombinationCashConsiderationWithHeld" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="BusinessCombinationCashConsiderationWithHeldNetOfNetWorkingCapitalAdjustment" id="mass_BusinessCombinationCashConsiderationWithHeldNetOfNetWorkingCapitalAdjustment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="BusinessCombinationStockConsiderationWithHeld" id="mass_BusinessCombinationStockConsiderationWithHeld" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="BusinessCombinationProFormaInformationProFormaIncomeLossBeforeTax" id="mass_BusinessCombinationProFormaInformationProFormaIncomeLossBeforeTax" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="JohnKennewegMember" id="mass_JohnKennewegMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="HoldbackSharesNirlabAcquisitionMember" id="mass_HoldbackSharesNirlabAcquisitionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="UpfrontPaymentRecordedInDeferredRevenueNetOfCurrentPortion" id="mass_UpfrontPaymentRecordedInDeferredRevenueNetOfCurrentPortion" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
</xsd:schema>
