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  <xs:element name="StockIssuedDuringPeriodValueIssuanceOfCommonStockToNorthviewStockholdersAsAResultOfTheMerger" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_StockIssuedDuringPeriodValueIssuanceOfCommonStockToNorthviewStockholdersAsAResultOfTheMerger"/>
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  <xs:element name="DueToRelatedPartiesPolicyTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_DueToRelatedPartiesPolicyTextBlock"/>
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  <xs:element name="RecentlyIssuedAccountingStandardsNotYetAdoptedPolicyTextBlock" type="dtr:textBlockItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_RecentlyIssuedAccountingStandardsNotYetAdoptedPolicyTextBlock"/>
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  <xs:element name="PrepaidLegal" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_PrepaidLegal"/>
  <xs:element name="StatedInterest" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_StatedInterest"/>
  <xs:element name="DebtScheduleofFutureMinimumPaymentsfortheConvertibleNotesPayableDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="ck0001859807_DebtScheduleofFutureMinimumPaymentsfortheConvertibleNotesPayableDetailsTable"/>
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  <xs:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForOptionsExercised" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForOptionsExercised"/>
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  <xs:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForOptionsCancelled" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForOptionsCancelled"/>
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  <xs:element name="ChargedAgainstAdditionalPaidinCapital" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_ChargedAgainstAdditionalPaidinCapital"/>
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  <xs:element name="NetProceedsReceivedFromTrust" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_NetProceedsReceivedFromTrust"/>
  <xs:element name="PrivateAndRepresentativeWarrantLiabilities" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_PrivateAndRepresentativeWarrantLiabilities"/>
  <xs:element name="IncreaseDecreaseInRelatedPartyNotes" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_IncreaseDecreaseInRelatedPartyNotes"/>
  <xs:element name="IncreaseDecreaseInRelatedPartyNotesWorkingCapitalLoan" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_IncreaseDecreaseInRelatedPartyNotesWorkingCapitalLoan"/>
  <xs:element name="IncreaseDecreaseInRelatedPartyNotesPIPESubscriptionAgreement" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_IncreaseDecreaseInRelatedPartyNotesPIPESubscriptionAgreement"/>
  <xs:element name="IncreaseDecreaseInExciseTaxPayable" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_IncreaseDecreaseInExciseTaxPayable"/>
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  <xs:element name="PublicSharesOfNVAC" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_PublicSharesOfNVAC"/>
  <xs:element name="NVACFounderSharesOutstandingPriorTheBusinessCombination" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_NVACFounderSharesOutstandingPriorTheBusinessCombination"/>
  <xs:element name="NVACRepresentativeSharesConvertedToClassACommonShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_NVACRepresentativeSharesConvertedToClassACommonShares"/>
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  <xs:element name="RecapitalizationScheduleofProfusaSharesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="ck0001859807_RecapitalizationScheduleofProfusaSharesDetailsTable"/>
  <xs:element name="LegacyProfusaShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_LegacyProfusaShares"/>
  <xs:element name="ProfusaSharesAfterConversionRatio" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_ProfusaSharesAfterConversionRatio"/>
  <xs:element name="FairValueMeasurementScheduleofCompanysFinancialAssetsandLiabilitiesMeasuredatFairValueDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="ck0001859807_FairValueMeasurementScheduleofCompanysFinancialAssetsandLiabilitiesMeasuredatFairValueDetailsTable"/>
  <xs:element name="FairValueMeasurementScheduleofCompanysFinancialAssetsandLiabilitiesMeasuredatFairValueDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_FairValueMeasurementScheduleofCompanysFinancialAssetsandLiabilitiesMeasuredatFairValueDetailsLineItems"/>
  <xs:element name="FairValueMeasurementScheduleofFinancialInstrumentsthatareMeasuredatFairValueonaRecurringBasisDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="ck0001859807_FairValueMeasurementScheduleofFinancialInstrumentsthatareMeasuredatFairValueonaRecurringBasisDetailsTable"/>
  <xs:element name="AssumptionOfRelatedPartyConvertibleNoteUponClosingOfTheBusinessCombinationAgreement" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_AssumptionOfRelatedPartyConvertibleNoteUponClosingOfTheBusinessCombinationAgreement"/>
  <xs:element name="IssuanceOfTaslyConvertibleNotes" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_IssuanceOfTaslyConvertibleNotes"/>
  <xs:element name="LoansPayableRelatedPartyAtFairValue" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_LoansPayableRelatedPartyAtFairValue"/>
  <xs:element name="ProceedsReceived" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_ProceedsReceived"/>
  <xs:element name="ConversionOfDebtToEquityValue" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_ConversionOfDebtToEquityValue"/>
  <xs:element name="DebtAccountingBasis" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_DebtAccountingBasis"/>
  <xs:element name="DebtConversionPricesPerShare" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_DebtConversionPricesPerShare"/>
  <xs:element name="DebtScheduleofContractualFutureMinimumPaymentsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="ck0001859807_DebtScheduleofContractualFutureMinimumPaymentsDetailsTable"/>
  <xs:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAvailableForGrantOptionsGranted" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAvailableForGrantOptionsGranted"/>
  <xs:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAvailableForGrantOptionsExercised" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAvailableForGrantOptionsExercised"/>
  <xs:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAvailableForGrantOptionsExpiredinDollarsPerShare" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAvailableForGrantOptionsExpiredinDollarsPerShare"/>
  <xs:element name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrantOptionsCancelledforfeited" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrantOptionsCancelledforfeited"/>
  <xs:element name="NatureOfRelationships" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_NatureOfRelationships"/>
  <xs:element name="TransactionCosts" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_TransactionCosts"/>
  <xs:element name="OrganizationDescriptionofBusinessGoingConcernandSignificantRisksandUncertaintiesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="ck0001859807_OrganizationDescriptionofBusinessGoingConcernandSignificantRisksandUncertaintiesDetailsTable"/>
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  <xs:element name="WorkingCapitalDeficit" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_WorkingCapitalDeficit"/>
  <xs:element name="PurchasePrice" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_PurchasePrice"/>
  <xs:element name="PercentageOfOriginalIssueDiscount" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_PercentageOfOriginalIssueDiscount"/>
  <xs:element name="Bitcoins" type="xbrli:pureItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_Bitcoins"/>
  <xs:element name="ConsecutiveBusinessDays" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_ConsecutiveBusinessDays"/>
  <xs:element name="SummaryofSignificantAccountingPoliciesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="ck0001859807_SummaryofSignificantAccountingPoliciesDetailsTable"/>
  <xs:element name="SummaryofSignificantAccountingPoliciesDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_SummaryofSignificantAccountingPoliciesDetailsLineItems"/>
  <xs:element name="BusinessCombinationTransactionCosts" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_BusinessCombinationTransactionCosts"/>
  <xs:element name="RevenueBasedMilestones" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_RevenueBasedMilestones"/>
  <xs:element name="CurrentProbabilityPercentage" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_CurrentProbabilityPercentage"/>
  <xs:element name="ExciseAndSalesTaxesPercentage" type="dtr:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_ExciseAndSalesTaxesPercentage"/>
  <xs:element name="FairValueMeasurementDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="ck0001859807_FairValueMeasurementDetailsTable"/>
  <xs:element name="ConvertibleDebtOfTermFairValue" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_ConvertibleDebtOfTermFairValue"/>
  <xs:element name="ConvertibleDebtOfDiscountRate" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_ConvertibleDebtOfDiscountRate"/>
  <xs:element name="GainLossInFairValueOfRelatedParty" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_GainLossInFairValueOfRelatedParty"/>
  <xs:element name="DebtDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="ck0001859807_DebtDetailsTable"/>
  <xs:element name="DebtDetailsLineItems" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_DebtDetailsLineItems"/>
  <xs:element name="DebtInstrumentDiscount" type="dtr:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_DebtInstrumentDiscount"/>
  <xs:element name="DebtInstrumentsContractualTerm" type="xbrli:durationItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_DebtInstrumentsContractualTerm"/>
  <xs:element name="BusinessDays" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_BusinessDays"/>
  <xs:element name="DebtInterestRate" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_DebtInterestRate"/>
  <xs:element name="CommonStockConvertibleConversionPrice" type="dtr:perShareItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_CommonStockConvertibleConversionPrice"/>
  <xs:element name="LossOnFairValueRemeasurement" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_LossOnFairValueRemeasurement"/>
  <xs:element name="MaturityMonth" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_MaturityMonth"/>
  <xs:element name="PromissoryNotes" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_PromissoryNotes"/>
  <xs:element name="UnrelatedPartyRepayable" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_UnrelatedPartyRepayable"/>
  <xs:element name="MonthlyPayments" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_MonthlyPayments"/>
  <xs:element name="LatePenaltiesAmount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_LatePenaltiesAmount"/>
  <xs:element name="RemainingRepaymentsOfDebt" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_RemainingRepaymentsOfDebt"/>
  <xs:element name="AggregatePurchasePrice" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_AggregatePurchasePrice"/>
  <xs:element name="PercentageOfConversionPrice" type="dtr:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_PercentageOfConversionPrice"/>
  <xs:element name="PercentageOfPayments" type="dtr:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_PercentageOfPayments"/>
  <xs:element name="PercentageOfLeasePayments" type="dtr:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_PercentageOfLeasePayments"/>
  <xs:element name="PercentageOfCommonStockOutstanding" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_PercentageOfCommonStockOutstanding"/>
  <xs:element name="PercentageOfRepaymentOrConversion" type="dtr:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_PercentageOfRepaymentOrConversion"/>
  <xs:element name="DebtFloorPrice" type="dtr:perShareItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_DebtFloorPrice"/>
  <xs:element name="PercentageOfClosingPrice" type="dtr:percentItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_PercentageOfClosingPrice"/>
  <xs:element name="FloorPricePerShare" type="dtr:perShareItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_FloorPricePerShare"/>
  <xs:element name="ModifiedFloorPrice" type="dtr:perShareItemType" abstract="false" xbrli:periodType="instant" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_ModifiedFloorPrice"/>
  <xs:element name="PercentageOfNetProceeds" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_PercentageOfNetProceeds"/>
  <xs:element name="OutstandingPrincipalAmount" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_OutstandingPrincipalAmount"/>
  <xs:element name="CommitmentsandContingenciesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="ck0001859807_CommitmentsandContingenciesDetailsTable"/>
  <xs:element name="ConvertiblePreferredStockDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="ck0001859807_ConvertiblePreferredStockDetailsTable"/>
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  <xs:element name="StockOptionPlanDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="ck0001859807_StockOptionPlanDetailsTable"/>
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  <xs:element name="IncomeTaxesDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="ck0001859807_IncomeTaxesDetailsTable"/>
  <xs:element name="ReceivedPaycheckProtectionProgramLoans" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_ReceivedPaycheckProtectionProgramLoans"/>
  <xs:element name="PaycheckProtectionProgramLoansOutstanding" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_PaycheckProtectionProgramLoansOutstanding"/>
  <xs:element name="SubsequentEventsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="ck0001859807_SubsequentEventsDetailsTable"/>
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  <xs:element name="NumberOfBitcoins" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_NumberOfBitcoins"/>
  <xs:element name="PurchaseOfBitcoins" type="xbrli:stringItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_PurchaseOfBitcoins"/>
  <xs:element name="ResaleOfCommonStock" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_ResaleOfCommonStock"/>
  <xs:element name="MinimumMarketValue" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_MinimumMarketValue"/>
  <xs:element name="TranchesIssuedPerShare" type="dtr:perShareItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_TranchesIssuedPerShare"/>
  <xs:element name="NetProceeds" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="debit" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_NetProceeds"/>
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  <xs:element name="OriginalIssuanceDiscount" type="dtr:percentItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_OriginalIssuanceDiscount"/>
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  <xs:element name="CommonStockThresholdTradingDays" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_CommonStockThresholdTradingDays"/>
  <xs:element name="CompanyCommonStockShares" type="xbrli:sharesItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_CompanyCommonStockShares"/>
  <xs:element name="TradingDays" type="xbrli:durationItemType" abstract="false" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_TradingDays"/>
  <xs:element name="AchievementOfRevenue" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="duration" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_AchievementOfRevenue"/>
  <xs:element name="WarrantsDetailsTable" type="xbrli:stringItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrldt:hypercubeItem" id="ck0001859807_WarrantsDetailsTable"/>
  <xs:element name="AggregateExercisePrice" type="xbrli:monetaryItemType" abstract="false" xbrli:periodType="instant" xbrli:balance="credit" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_AggregateExercisePrice"/>
  <xs:element name="AprilJune2024SeniorNotesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_AprilJune2024SeniorNotesMember"/>
  <xs:element name="AprilJune2025SeniorNotesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_AprilJune2025SeniorNotesMember"/>
  <xs:element name="AprilJuneTwoThousandTwentyFourSeniorNotesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_AprilJuneTwoThousandTwentyFourSeniorNotesMember"/>
  <xs:element name="AprilTwoThousandTwentyOneConvertibleNotesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_AprilTwoThousandTwentyOneConvertibleNotesMember"/>
  <xs:element name="AprilTwoThousandTwentyThreeSeniorNotesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_AprilTwoThousandTwentyThreeSeniorNotesMember"/>
  <xs:element name="AscentPIPEConvertibleNoteMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_AscentPIPEConvertibleNoteMember"/>
  <xs:element name="AscentPartnersFundLLCMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_AscentPartnersFundLLCMember"/>
  <xs:element name="AugustTwoThousandTwentyConvertibleNotesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_AugustTwoThousandTwentyConvertibleNotesMember"/>
  <xs:element name="AugustTwoThousandTwentyOneSeniorNotesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_AugustTwoThousandTwentyOneSeniorNotesMember"/>
  <xs:element name="BeneficialOwnershipLimitationMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_BeneficialOwnershipLimitationMember"/>
  <xs:element name="CommonStockImmediatelyAfterTheBusinessCombinationMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_CommonStockImmediatelyAfterTheBusinessCombinationMember"/>
  <xs:element name="ConversionOfNotesIntoSharesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_ConversionOfNotesIntoSharesMember"/>
  <xs:element name="ConvertibleLoansMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_ConvertibleLoansMember"/>
  <xs:element name="ConvertibleNotesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_ConvertibleNotesMember"/>
  <xs:element name="ConvertibleNotesNovember2022AmendmentMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_ConvertibleNotesNovember2022AmendmentMember"/>
  <xs:element name="ConvertiblePromissoryNoteRelatedPartyMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_ConvertiblePromissoryNoteRelatedPartyMember"/>
  <xs:element name="ConvertibleWorkingCapitalPromissoryNoteMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_ConvertibleWorkingCapitalPromissoryNoteMember"/>
  <xs:element name="DecemberTwoThousandTwentyOneSeniorNotesMember" type="dtr:domainItemType" abstract="true" xbrli:periodType="duration" nillable="true" substitutionGroup="xbrli:item" id="ck0001859807_DecemberTwoThousandTwentyOneSeniorNotesMember"/>
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