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  <xsd:element abstract="true" id="edsa_ChiefExecutiveOfficerSecretaryAndDirectorMember" name="ChiefExecutiveOfficerSecretaryAndDirectorMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_ClassA1WarrantsMember" name="ClassA1WarrantsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="edsa_ClassOfWarrantOrRightExpiredDuringPeriod" name="ClassOfWarrantOrRightExpiredDuringPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="edsa_ClassOfWarrantOrRightExpiredDuringPeriodExercisePrice" name="ClassOfWarrantOrRightExpiredDuringPeriodExercisePrice" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType" xbrli:periodType="duration"/>
  <xsd:element id="edsa_ClassOfWarrantOrRightIssuedDuringPeriod" name="ClassOfWarrantOrRightIssuedDuringPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="edsa_ClassOfWarrantOrRightIssuedDuringPeriodExercisePrice" name="ClassOfWarrantOrRightIssuedDuringPeriodExercisePrice" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType" xbrli:periodType="duration"/>
  <xsd:element id="edsa_ClassOfWarrantOrRightMaximumBeneficialOwnership" name="ClassOfWarrantOrRightMaximumBeneficialOwnership" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="instant"/>
  <xsd:element id="edsa_ClassOfWarrantOrRightOutstandingWeightedAverageRemainingContractualTerm" name="ClassOfWarrantOrRightOutstandingWeightedAverageRemainingContractualTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_CommonStockAndWarrantsMember" name="CommonStockAndWarrantsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_DocumentAndEntityInformation" name="DocumentAndEntityInformation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_DrugSubstanceMember" name="DrugSubstanceMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="edsa_EquityOfferingMaximumAmount" name="EquityOfferingMaximumAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="edsa_EquityOfferingMaximumWithoutApproval" name="EquityOfferingMaximumWithoutApproval" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="edsa_February2025SeriesB1PurchaseAgreementMember" name="February2025SeriesB1PurchaseAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="edsa_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour" name="FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="edsa_GovernmentAssistanceAwardAmountNotRepayable" name="GovernmentAssistanceAwardAmountNotRepayable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="edsa_GovernmentAssistanceAwardAmountRepayable" name="GovernmentAssistanceAwardAmountRepayable" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element id="edsa_GovernmentAssistanceExpirationPeriodAfterLastRepayment" name="GovernmentAssistanceExpirationPeriodAfterLastRepayment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration"/>
  <xsd:element id="edsa_GovernmentAssistanceMaximumAmountRepayableFactorOfOriginal" name="GovernmentAssistanceMaximumAmountRepayableFactorOfOriginal" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="instant"/>
  <xsd:element id="edsa_GovernmentAssistancePeriodOfRepayment" name="GovernmentAssistancePeriodOfRepayment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_LicenseAgreementRelatedToPharmaceuticalProductsMember" name="LicenseAgreementRelatedToPharmaceuticalProductsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="edsa_LicenseAgreementRenewalPeriod" name="LicenseAgreementRenewalPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_LicenseAgreementToAcquireGlobalRightsOfPharmaceuticalProductMember" name="LicenseAgreementToAcquireGlobalRightsOfPharmaceuticalProductMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="edsa_MaximumContingentObligation" name="MaximumContingentObligation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant"/>
  <xsd:element id="edsa_MilestoneExpense" name="MilestoneExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_NoteToFinancialStatementDetailsTextual" name="NoteToFinancialStatementDetailsTextual" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_NotesToFinancialStatements" name="NotesToFinancialStatements" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_NotesToFinancialStatementsAbstract" name="NotesToFinancialStatementsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_October2024SPAMember" name="October2024SPAMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_PatrickMarshallMember" name="PatrickMarshallMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="edsa_PaymentsForLicensingAndRoyalties" name="PaymentsForLicensingAndRoyalties" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="edsa_PaymentsForMilestoneRoyaltyAndSublicensing" name="PaymentsForMilestoneRoyaltyAndSublicensing" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="edsa_PreferredReturnOnClassAPreferredSharesAmount" name="PreferredReturnOnClassAPreferredSharesAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element id="edsa_PreferredStockConvertibleMaximumBeneficialOwnership" name="PreferredStockConvertibleMaximumBeneficialOwnership" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="instant"/>
  <xsd:element id="edsa_PreferredStockConvertibleMaximumBeneficialOwnershipAtOptionOfHolder" name="PreferredStockConvertibleMaximumBeneficialOwnershipAtOptionOfHolder" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="instant"/>
  <xsd:element id="edsa_PreferredStockConvertibleMaximumBeneficialOwnershipAtOptionOfHolderGiven61DaysNotice" name="PreferredStockConvertibleMaximumBeneficialOwnershipAtOptionOfHolderGiven61DaysNotice" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="instant"/>
  <xsd:element id="edsa_PreferredStockConvertibleMaximumBeneficialOwnershipTierOne" name="PreferredStockConvertibleMaximumBeneficialOwnershipTierOne" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="instant"/>
  <xsd:element id="edsa_PreferredStockConvertibleMaximumBeneficialOwnershipTierThree" name="PreferredStockConvertibleMaximumBeneficialOwnershipTierThree" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="instant"/>
  <xsd:element id="edsa_PreferredStockConvertibleMaximumBeneficialOwnershipTierTwo" name="PreferredStockConvertibleMaximumBeneficialOwnershipTierTwo" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="edsa_RangeFiveMember" name="RangeFiveMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_RangeFourMember" name="RangeFourMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_RangeOneMember" name="RangeOneMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_RangeSixMember" name="RangeSixMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_RangeThreeMember" name="RangeThreeMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_RangeTwoMember" name="RangeTwoMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="edsa_ReclassificationOfIssuanceCostsUponConversionOfConvertibleSecurities" name="ReclassificationOfIssuanceCostsUponConversionOfConvertibleSecurities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="edsa_SensitivityAnalysisTenPercentChangeToForeignCurrencyExchangeImpactToNetIncomeLossAndOtherComprehensiveIncomeLoss" name="SensitivityAnalysisTenPercentChangeToForeignCurrencyExchangeImpactToNetIncomeLossAndOtherComprehensiveIncomeLoss" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="edsa_SeriesA1PreferredStockMember" name="SeriesA1PreferredStockMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_SeriesB1PreferredSharesConvertedIntoCommonSharesMember" name="SeriesB1PreferredSharesConvertedIntoCommonSharesMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_SeriesB1PreferredStockMember" name="SeriesB1PreferredStockMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_SeriesB1PurchaseAgreementMember" name="SeriesB1PurchaseAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="edsa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledInPeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledInPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element id="edsa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledInPeriodWeightedAverageGrantDateFairValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsCancelledInPeriodWeightedAverageGrantDateFairValue" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType" xbrli:periodType="duration"/>
  <xsd:element id="edsa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisableNumber" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisableNumber" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant"/>
  <xsd:element id="edsa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisedInPeriodWeightedAverageGrantDateFairValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsExercisedInPeriodWeightedAverageGrantDateFairValue" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType" xbrli:periodType="instant"/>
  <xsd:element id="edsa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNumber" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNumber" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant"/>
  <xsd:element id="edsa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedExercisableNumber" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedExercisableNumber" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant"/>
  <xsd:element id="edsa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedNumber" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedNumber" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant"/>
  <xsd:element id="edsa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingAfterTwentyfourMonthsNumber" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingAfterTwentyfourMonthsNumber" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant"/>
  <xsd:element id="edsa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingExercisableAfterTwentyfourMonthsNumber" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingExercisableAfterTwentyfourMonthsNumber" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant"/>
  <xsd:element id="edsa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingExercisableFromThirteenToTwentyfourMonthsNumber" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingExercisableFromThirteenToTwentyfourMonthsNumber" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant"/>
  <xsd:element id="edsa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingExercisableInNextTwelveMonthsNumber" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingExercisableInNextTwelveMonthsNumber" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant"/>
  <xsd:element id="edsa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingFromThirteenToTwentyfourMonthsNumber" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingFromThirteenToTwentyfourMonthsNumber" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant"/>
  <xsd:element id="edsa_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingInNextTwelveMonthsNumber" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestingInNextTwelveMonthsNumber" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant"/>
  <xsd:element id="edsa_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionWeightedAverageGrantDateFairValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionWeightedAverageGrantDateFairValue" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType" xbrli:periodType="instant"/>
  <xsd:element id="edsa_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableIntrinsicValuePerShare" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableIntrinsicValuePerShare" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType" xbrli:periodType="instant"/>
  <xsd:element id="edsa_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpiredWeightedAverageGrantDateFairValue" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpiredWeightedAverageGrantDateFairValue" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType" xbrli:periodType="duration"/>
  <xsd:element id="edsa_SharesIssuedDuringPeriodValueConversionOfConvertibleSecuritiesNet" name="SharesIssuedDuringPeriodValueConversionOfConvertibleSecuritiesNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="edsa_StockIssuedDuringPeriodValuePreferredShares" name="StockIssuedDuringPeriodValuePreferredShares" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element id="edsa_StockIssuedDuringPeriodValueStockIssuanceCosts" name="StockIssuedDuringPeriodValueStockIssuanceCosts" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_The2019PlanMember" name="The2019PlanMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_The2023SIFAgreementMember" name="The2023SIFAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_TheConstructsMember" name="TheConstructsMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="edsa_UnitsIssuedCombinedPurchasePrice" name="UnitsIssuedCombinedPurchasePrice" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType" xbrli:periodType="instant"/>
  <xsd:element id="edsa_UnitsIssuedPercentageOfUnderlyingConversionShares" name="UnitsIssuedPercentageOfUnderlyingConversionShares" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:percentItemType" xbrli:periodType="instant"/>
  <xsd:element id="edsa_UpfrontLicensePayment" name="UpfrontLicensePayment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_WarrantOneMember" name="WarrantOneMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_WarrantSharesMember" name="WarrantSharesMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_WarrantThreeMember" name="WarrantThreeMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_WarrantTwoMember" name="WarrantTwoMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element id="edsa_WorkingCapitalDeficit" name="WorkingCapitalDeficit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant"/>
  <xsd:element abstract="true" id="edsa_statement-statement-note-3-intangible-assets-estimated-future-amortization-details" name="statement-statement-note-3-intangible-assets-estimated-future-amortization-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_statement-statement-note-3-intangible-assets-schedule-of-intangible-assets-details" name="statement-statement-note-3-intangible-assets-schedule-of-intangible-assets-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_statement-statement-note-3-intangible-assets-tables" name="statement-statement-note-3-intangible-assets-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_statement-statement-note-4-commitments-commitments-for-contractual-research-details" name="statement-statement-note-4-commitments-commitments-for-contractual-research-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_statement-statement-note-4-commitments-tables" name="statement-statement-note-4-commitments-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_statement-statement-note-5-capital-shares-option-activity-details" name="statement-statement-note-5-capital-shares-option-activity-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_statement-statement-note-5-capital-shares-options-outstanding-and-exercisable-details" name="statement-statement-note-5-capital-shares-options-outstanding-and-exercisable-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_statement-statement-note-5-capital-shares-restricted-stock-units-details" name="statement-statement-note-5-capital-shares-restricted-stock-units-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_statement-statement-note-5-capital-shares-schedule-of-preferred-shares-details" name="statement-statement-note-5-capital-shares-schedule-of-preferred-shares-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_statement-statement-note-5-capital-shares-schedule-of-preferred-shares-details9BBD0C64-642D-42CB-848D-F2EDF593E0A1" name="statement-statement-note-5-capital-shares-schedule-of-preferred-shares-details9BBD0C64-642D-42CB-848D-F2EDF593E0A1" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_statement-statement-note-5-capital-shares-schedule-of-warrants-details" name="statement-statement-note-5-capital-shares-schedule-of-warrants-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_statement-statement-note-5-capital-shares-schedule-of-warrants-details13BBE53D-15A0-4965-B4AA-228F845E3F3C" name="statement-statement-note-5-capital-shares-schedule-of-warrants-details13BBE53D-15A0-4965-B4AA-228F845E3F3C" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_statement-statement-note-5-capital-shares-tables" name="statement-statement-note-5-capital-shares-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_statement-statement-note-5-capital-shares-vested-restricted-stock-units-details" name="statement-statement-note-5-capital-shares-vested-restricted-stock-units-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="edsa_statement-statement-note-5-capital-shares-warrants-assumptions-details" name="statement-statement-note-5-capital-shares-warrants-assumptions-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
</xsd:schema>
