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<!-- Creation Date :2022-08-02T00:29:17.9973+00:00 -->
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  <xsd:element id="om_DebtInstrumentInterestOnlyPaymentsYearAndMonth" name="DebtInstrumentInterestOnlyPaymentsYearAndMonth" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="om_DebtInstrumentPrepaymentFeePercentage" name="DebtInstrumentPrepaymentFeePercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="om_DebtInstrumentPrincipalPaymentTermAfterInterestOnlyPeriodExpires" name="DebtInstrumentPrincipalPaymentTermAfterInterestOnlyPeriodExpires" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="om_DebtSecuritiesAvailableForSaleRemainingContractualMaturitiesPeriod" name="DebtSecuritiesAvailableForSaleRemainingContractualMaturitiesPeriod" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="om_DeemedDividendOnSettlementOfAccruedDividend" name="DeemedDividendOnSettlementOfAccruedDividend" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="om_IncreaseDecreaseInAccruedWarrantyLiability" name="IncreaseDecreaseInAccruedWarrantyLiability" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="om_IncreaseDecreaseInOperatingLeaseLiabilities" name="IncreaseDecreaseInOperatingLeaseLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="om_NonCashInterestExpense" name="NonCashInterestExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="om_NonCashLeaseExpense" name="NonCashLeaseExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="om_OfferingCostsUnderwritingDiscountsAndCommissionsExpenses" name="OfferingCostsUnderwritingDiscountsAndCommissionsExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="om_OtherDebtIssuanceCosts" name="OtherDebtIssuanceCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="om_OtherNonCashItems" name="OtherNonCashItems" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="om_PercentageOfLimitationOnPledgesOfCapitalStockOfForeignSubsidiaries" name="PercentageOfLimitationOnPledgesOfCapitalStockOfForeignSubsidiaries" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="om_ProceedsFromStockOptionsExercisedAndEmployeeStockPurchasePlanPurchases" name="ProceedsFromStockOptionsExercisedAndEmployeeStockPurchasePlanPurchases" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="om_ProvisionForInventories" name="ProvisionForInventories" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="om_RevenueFromConsolesOperatingLeaseArrangements" name="RevenueFromConsolesOperatingLeaseArrangements" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="om_RevenuePerformanceObligation1" name="RevenuePerformanceObligation1" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="om_ReversedStockBasedCompensationExpense" name="ReversedStockBasedCompensationExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="om_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPercentageVestedInPeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsPercentageVestedInPeriod" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="om_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPercentageOfIssuedInPeriodToCeo" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPercentageOfIssuedInPeriodToCeo" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="om_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPercentageOfIssuedInPeriodToExecutiveOfficers" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesPercentageOfIssuedInPeriodToExecutiveOfficers" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="om_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingPeriodMonthAndYear" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingPeriodMonthAndYear" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="om_StockIssuedDuringPeriodShareRedeemableConvertiblePreferredStockWarrants" name="StockIssuedDuringPeriodShareRedeemableConvertiblePreferredStockWarrants" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="om_StockIssuedDuringPeriodSharesStockDividend" name="StockIssuedDuringPeriodSharesStockDividend" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="om_TemporaryEquityAdjustmentToRedemptionValueOnRedeemableConvertiblePreferredStock" name="TemporaryEquityAdjustmentToRedemptionValueOnRedeemableConvertiblePreferredStock" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="om_TemporaryEquityCashExercisesOfRedeemableConvertiblePreferredStockWarrantsShares" name="TemporaryEquityCashExercisesOfRedeemableConvertiblePreferredStockWarrantsShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="om_TemporaryEquityCashExercisesOfRedeemableConvertiblePreferredStockWarrantsValue" name="TemporaryEquityCashExercisesOfRedeemableConvertiblePreferredStockWarrantsValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="om_TemporaryEquityConversionOfConvertibleRedeemablePreferredStockInToCommonStock" name="TemporaryEquityConversionOfConvertibleRedeemablePreferredStockInToCommonStock" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="om_TemporaryEquityDeemedDividendOnSettlementOfAccruedDividend" name="TemporaryEquityDeemedDividendOnSettlementOfAccruedDividend" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="om_TemporaryEquitySettlementOfAccruedDividends" name="TemporaryEquitySettlementOfAccruedDividends" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="om_TemporaryEquitySharesConversionOfConvertibleRedeemablePreferredStockInToCommonStock" name="TemporaryEquitySharesConversionOfConvertibleRedeemablePreferredStockInToCommonStock" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="om_TemporaryEquityStockIssuedDuringPeriodSharesNewIssues" name="TemporaryEquityStockIssuedDuringPeriodSharesNewIssues" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="om_TransferOfInventoriesToPropertyAndEquipment" name="TransferOfInventoriesToPropertyAndEquipment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="om_UnrealizedLossesCausedByChangesInMarketInterestRates" name="UnrealizedLossesCausedByChangesInMarketInterestRates" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="om_DescriptionOfBusinessLineItems" name="DescriptionOfBusinessLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="om_EquityIncentivePlanLineItems" name="EquityIncentivePlanLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="om_ConsolesProductMember" name="ConsolesProductMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="om_ConsumablesProductMember" name="ConsumablesProductMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="om_EmployeesSharePurchasePlanMember" name="EmployeesSharePurchasePlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="om_FollowOnPublicOfferingMember" name="FollowOnPublicOfferingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="om_OperatingLeaseArrangementsMember" name="OperatingLeaseArrangementsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="om_ServiceAndOtherRevenueMember" name="ServiceAndOtherRevenueMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="om_SiliconValleyBankTermLoanMember" name="SiliconValleyBankTermLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="om_StockOptionsToPurchaseCommonStockMember" name="StockOptionsToPurchaseCommonStockMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="om_TwoThousandTwentyEquityIncentivePlanMember" name="TwoThousandTwentyEquityIncentivePlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="om_UnderwritersMember" name="UnderwritersMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="om_WarrantsToPurchaseCommonStockMember" name="WarrantsToPurchaseCommonStockMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="om_WarrantsToPurchaseRedeemableConvertiblePreferredStockMember" name="WarrantsToPurchaseRedeemableConvertiblePreferredStockMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="om_YankeeDebtSecuritiesMember" name="YankeeDebtSecuritiesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="om_DescriptionOfBusinessTable" name="DescriptionOfBusinessTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="om_EquityIncentivePlanTable" name="EquityIncentivePlanTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="om_ScheduleOfAccruedExpensesAndOtherCurrentLiabilitiesTableTextBlock" name="ScheduleOfAccruedExpensesAndOtherCurrentLiabilitiesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="om_ScheduleOfCashCashEquivalentsAndRestrictedCashTableTextBlock" name="ScheduleOfCashCashEquivalentsAndRestrictedCashTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="om_CashCashEquivalentsAndRestrictedCash" name="CashCashEquivalentsAndRestrictedCash" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
</xsd:schema>
