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        <link:definition>99900 - Disclosure - Standard And Custom Axis Domain Defaults</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
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  <xsd:import namespace="http://xbrl.sec.gov/country/2024" schemaLocation="https://xbrl.sec.gov/country/2024/country-2024.xsd" />
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  <xsd:element name="StockIssuedDuringPeriodValueWarrantExercised" id="hsdt_StockIssuedDuringPeriodValueWarrantExercised" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="HealthTechConnexIncorporationMember" id="hsdt_HealthTechConnexIncorporationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfStockholdersEquityLineItems" id="hsdt_ScheduleOfStockholdersEquityLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ScheduleOfStockholdersEquityTable" id="hsdt_ScheduleOfStockholdersEquityTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="ClassOfWarrantOrRightExercised" id="hsdt_ClassOfWarrantOrRightExercised" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
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  <xsd:element name="ProceedsFromIssuanceOfCommonStockNet" id="hsdt_ProceedsFromIssuanceOfCommonStockNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element name="TwoThousandTwentyOneInducementPlanMember" id="hsdt_TwoThousandTwentyOneInducementPlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AccruedFranchiseFeeCurrent" id="hsdt_AccruedFranchiseFeeCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element name="PercentageOfRoyaltyOnNetRevenue" id="hsdt_PercentageOfRoyaltyOnNetRevenue" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CommitmentsAndContingenciesLineItems" id="hsdt_CommitmentsAndContingenciesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="CommitmentsAndContingenciesTable" id="hsdt_CommitmentsAndContingenciesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="AdvancedNeuroRehabilitationLimitedLiabilityCompanyMember" id="hsdt_AdvancedNeuroRehabilitationLimitedLiabilityCompanyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="LicenseAgreementForExclusiveRightsOnPatentPendingTechnologyMember" id="hsdt_LicenseAgreementForExclusiveRightsOnPatentPendingTechnologyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="SupplementalBalanceSheetDisclosuresAbstract" id="hsdt_SupplementalBalanceSheetDisclosuresAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
  <xsd:element name="EquityIncentive2022PlanMember" id="hsdt_EquityIncentive2022PlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PreFundedWarrantsMember" id="hsdt_PreFundedWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PublicWarrantsMember" id="hsdt_PublicWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="SaleOfStockCombinedOfferingPricePerShare" id="hsdt_SaleOfStockCombinedOfferingPricePerShare" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="SaleOfStockPreFundedWarrantsAndAccompanyingPublicWarrantsPricePerShare" id="hsdt_SaleOfStockPreFundedWarrantsAndAccompanyingPublicWarrantsPricePerShare" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="PublicOfferingMember" id="hsdt_PublicOfferingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="CommonStockWarrantsMember" id="hsdt_CommonStockWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="MaximumAggregateOfferingAmount" id="hsdt_MaximumAggregateOfferingAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" abstract="false" nillable="true" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element name="ShareBasedCompensationAnnualIncreaseInAuthorizedSharesAsPercentageOfFullyDilutedSharesOfCommonStockOutstanding" id="hsdt_ShareBasedCompensationAnnualIncreaseInAuthorizedSharesAsPercentageOfFullyDilutedSharesOfCommonStockOutstanding" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="AugustTwoThousandTwentyTwoOfferingMember" id="hsdt_AugustTwoThousandTwentyTwoOfferingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="AccruedAndOtherCurrentLiabilities." id="hsdt_AccruedAndOtherCurrentLiabilities." type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="credit" />
  <xsd:element name="InventoryRelatedAssetsCurrent" id="hsdt_InventoryRelatedAssetsCurrent" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" xbrli:balance="debit" />
  <xsd:element name="ScheduleOfAccruedAndOtherCurrentLiabilitiesTableTextBlock" id="hsdt_ScheduleOfAccruedAndOtherCurrentLiabilitiesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ExclusivityRightsNumberOfAdditionalTerms" id="hsdt_ExclusivityRightsNumberOfAdditionalTerms" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ExclusivityRightsAdditionalTerm" id="hsdt_ExclusivityRightsAdditionalTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ExclusivityRightsPeriodOfWrittenNoticeForRenewal" id="hsdt_ExclusivityRightsPeriodOfWrittenNoticeForRenewal" type="xbrli:durationItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ExpirationPeriodAxis" id="hsdt_ExpirationPeriodAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ExpirationPeriodDomain" id="hsdt_ExpirationPeriodDomain" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ExclusiveDistributionAgreementMember" id="hsdt_ExclusiveDistributionAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ExclusivityRightGrantedValue" id="hsdt_ExclusivityRightGrantedValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="AttheMarketOfferingMember" id="hsdt_AttheMarketOfferingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="MaximumCommissionRateAsPercentageOfGrossProceeds" id="hsdt_MaximumCommissionRateAsPercentageOfGrossProceeds" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="RothCapitalPartnersLlcMember" id="hsdt_RothCapitalPartnersLlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="TwoCustomersMember" id="hsdt_TwoCustomersMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="NumberOfCustomers" id="hsdt_NumberOfCustomers" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="ClassOfWarrantOrRightCancelled" id="hsdt_ClassOfWarrantOrRightCancelled" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="DerivativeWarrantLiabilityReclassifiedToEquityOnExerciseOfWarrants" id="hsdt_DerivativeWarrantLiabilityReclassifiedToEquityOnExerciseOfWarrants" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="PaymentOfDeferredOfferingCosts" id="hsdt_PaymentOfDeferredOfferingCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="DeferredOfferingCostsReclassifiedToEquityUponPublicOffering" id="hsdt_DeferredOfferingCostsReclassifiedToEquityUponPublicOffering" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="SeriesWarrantsMember" id="hsdt_SeriesWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="SeriesBWarrantsMember" id="hsdt_SeriesBWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="Warrants2022Member" id="hsdt_Warrants2022Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ShareIssuanceCostsIncludedInAccountsPayable" id="hsdt_ShareIssuanceCostsIncludedInAccountsPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="ForeignCurrencyTransactionIncludingOtherGainLossBeforeTax" id="hsdt_ForeignCurrencyTransactionIncludingOtherGainLossBeforeTax" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="ClassOfWarrantOrRightSettlement" id="hsdt_ClassOfWarrantOrRightSettlement" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="DerivativeGainLossOnDerivativeNetCashFlowImpact" id="hsdt_DerivativeGainLossOnDerivativeNetCashFlowImpact" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="credit" />
  <xsd:element name="LesseeOperatingLeaseRentExpensePerMonth" id="hsdt_LesseeOperatingLeaseRentExpensePerMonth" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="ExistingWarrantsMember" id="hsdt_ExistingWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="InducementWarrantsMember" id="hsdt_InducementWarrantsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="ProceedsFromWarrantExercisesNetOfExpenses" id="hsdt_ProceedsFromWarrantExercisesNetOfExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="FourCustomersMember" id="hsdt_FourCustomersMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="StockIssuedDuringPeriodSharesWarrantsExercised" id="hsdt_StockIssuedDuringPeriodSharesWarrantsExercised" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="StockIssuedStockIssuanceCosts" id="hsdt_StockIssuedStockIssuanceCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="PromissoryNotesApril2025Member" id="hsdt_PromissoryNotesApril2025Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PrivatePlacement2025Member" id="hsdt_PrivatePlacement2025Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="MaximGroupLlcMember" id="hsdt_MaximGroupLlcMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="true" />
  <xsd:element name="PlacementAgentFeesPercentageOfGrossProceedsOfOffering" id="hsdt_PlacementAgentFeesPercentageOfGrossProceedsOfOffering" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" />
  <xsd:element name="PlacementAgentMaximumReimbursementOfLegalFees" id="hsdt_PlacementAgentMaximumReimbursementOfLegalFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
  <xsd:element name="PromissoryNotesOriginalIssueDiscount" id="hsdt_PromissoryNotesOriginalIssueDiscount" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" abstract="false" />
  <xsd:element name="OtherLegalAndRegulatoryExpenses" id="hsdt_OtherLegalAndRegulatoryExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="duration" abstract="false" xbrli:balance="debit" />
</xsd:schema>
