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  <xsd:element id="hscs_ProceedsFromIssuanceOfUnits" name="ProceedsFromIssuanceOfUnits" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="hscs_RepaymentsOfFinancedInsurancePremiums" name="RepaymentsOfFinancedInsurancePremiums" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hscs_RestrictedStockUnitsRsusAndRestrictedStockMember" name="RestrictedStockUnitsRsusAndRestrictedStockMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hscs_ReverseStockSplitMember" name="ReverseStockSplitMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="hscs_RoyaltyPaymentNumberOfDevicesToSell" name="RoyaltyPaymentNumberOfDevicesToSell" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant"/>
  <xsd:element id="hscs_RoyaltyPaymentUponSaleOfDevices" name="RoyaltyPaymentUponSaleOfDevices" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="hscs_SaleOfStockPurchaseTerm" name="SaleOfStockPurchaseTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="instant"/>
  <xsd:element id="hscs_SaleOfStockValueAuthorized" name="SaleOfStockValueAuthorized" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="hscs_SaleOfStockValueAuthorizedUnderIb6" name="SaleOfStockValueAuthorizedUnderIb6" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="hscs_ServicebasedCommonStockOptionMember" name="ServicebasedCommonStockOptionMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="hscs_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardContractualTerm" name="SharebasedCompensationArrangementBySharebasedPaymentAwardAwardContractualTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration"/>
  <xsd:element id="hscs_SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodGrantDateFairValue" name="SharebasedCompensationArrangementBySharebasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodGrantDateFairValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="hscs_SharebasedCompensationArrangementBySharebasedPaymentAwardMaximumAllowablePercentageOfConvertibleSecurities" name="SharebasedCompensationArrangementBySharebasedPaymentAwardMaximumAllowablePercentageOfConvertibleSecurities" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="instant"/>
  <xsd:element id="hscs_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsGrantedWeightedAverageRemainingContractualTerm" name="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsGrantedWeightedAverageRemainingContractualTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration"/>
  <xsd:element id="hscs_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageRemainingContractualTerm" name="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageRemainingContractualTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hscs_SingleReportableSegmentMember" name="SingleReportableSegmentMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="hscs_StockAndWarrantsIssuedDuringPeriodSharesNewIssues" name="StockAndWarrantsIssuedDuringPeriodSharesNewIssues" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="hscs_StockAndWarrantsIssuedDuringPeriodValueNewIssues" name="StockAndWarrantsIssuedDuringPeriodValueNewIssues" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="hscs_StockIssuedDuringPeriodValueReverseStockSplits" name="StockIssuedDuringPeriodValueReverseStockSplits" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hscs_StreetervilleMember" name="StreetervilleMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hscs_StreetervilleNoteMember" name="StreetervilleNoteMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hscs_StreetervilleNoteOneMember" name="StreetervilleNoteOneMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hscs_StreetervilleNoteTwoMember" name="StreetervilleNoteTwoMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hscs_TechnologyAgreementMember" name="TechnologyAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hscs_The1mLenderWarrantsMember" name="The1mLenderWarrantsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hscs_The2023EquityIncentivePlanMember" name="The2023EquityIncentivePlanMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hscs_UnitOfferingMember" name="UnitOfferingMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="hscs_UnitOfferingPrice" name="UnitOfferingPrice" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="hscs_UnitWarrantsMember" name="UnitWarrantsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="hscs_UnitsAuthorized" name="UnitsAuthorized" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant"/>
  <xsd:element id="hscs_UnitsAuthorizedValue" name="UnitsAuthorizedValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="hscs_UnitsCashFeePercent" name="UnitsCashFeePercent" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="instant"/>
  <xsd:element id="hscs_UnitsIssuedDuringPeriod" name="UnitsIssuedDuringPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="hscs_UnitsPercentAwarded" name="UnitsPercentAwarded" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="instant"/>
  <xsd:element id="hscs_VotesPerShareOfCommonStock" name="VotesPerShareOfCommonStock" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="hscs_statement-statement-note-3-summary-of-significant-accounting-policies-inventory-details" name="statement-statement-note-3-summary-of-significant-accounting-policies-inventory-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hscs_statement-statement-note-3-summary-of-significant-accounting-policies-property-and-equipment-details" name="statement-statement-note-3-summary-of-significant-accounting-policies-property-and-equipment-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hscs_statement-statement-note-3-summary-of-significant-accounting-policies-tables" name="statement-statement-note-3-summary-of-significant-accounting-policies-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hscs_statement-statement-note-4-debt-debt-details" name="statement-statement-note-4-debt-debt-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hscs_statement-statement-note-4-debt-tables" name="statement-statement-note-4-debt-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hscs_statement-statement-note-5-stockholders-equity-tables" name="statement-statement-note-5-stockholders-equity-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hscs_statement-statement-note-5-stockholders-equity-warrant-activity-details" name="statement-statement-note-5-stockholders-equity-warrant-activity-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hscs_statement-statement-note-6-stockbased-compensation-option-activity-details" name="statement-statement-note-6-stockbased-compensation-option-activity-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hscs_statement-statement-note-6-stockbased-compensation-rsu-and-restricted-stock-activity-details" name="statement-statement-note-6-stockbased-compensation-rsu-and-restricted-stock-activity-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hscs_statement-statement-note-6-stockbased-compensation-tables" name="statement-statement-note-6-stockbased-compensation-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hscs_statement-statement-note-6-stockbased-compensation-valuation-assumptions-details" name="statement-statement-note-6-stockbased-compensation-valuation-assumptions-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hscs_statement-statement-note-7-income-taxes-components-of-income-tax-expense-benefit-details" name="statement-statement-note-7-income-taxes-components-of-income-tax-expense-benefit-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hscs_statement-statement-note-7-income-taxes-deferred-tax-assets-details" name="statement-statement-note-7-income-taxes-deferred-tax-assets-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hscs_statement-statement-note-7-income-taxes-income-tax-reconciliation-details" name="statement-statement-note-7-income-taxes-income-tax-reconciliation-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hscs_statement-statement-note-7-income-taxes-tables" name="statement-statement-note-7-income-taxes-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hscs_statement-statement-note-8-commitments-and-contingencies-lease-information-details" name="statement-statement-note-8-commitments-and-contingencies-lease-information-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hscs_statement-statement-note-8-commitments-and-contingencies-lease-maturities-details" name="statement-statement-note-8-commitments-and-contingencies-lease-maturities-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hscs_statement-statement-note-8-commitments-and-contingencies-tables" name="statement-statement-note-8-commitments-and-contingencies-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hscs_statement-statement-note-9-segment-information-summary-of-financial-information-details" name="statement-statement-note-9-segment-information-summary-of-financial-information-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hscs_statement-statement-note-9-segment-information-tables" name="statement-statement-note-9-segment-information-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="hscs_statement-statement-significant-accounting-policies-policies" name="statement-statement-significant-accounting-policies-policies" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
</xsd:schema>
