<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019eb689-8cce-7864-adda-42baefdc7314,g:0a4af131-d567-46b7-8dd9-7ecf3292af7e-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:snwv="http://sanuwave.com/20260630" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2024-01-31" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://sanuwave.com/20260630">
  <xs:import namespace="http://fasb.org/srt/2026" schemaLocation="https://xbrl.fasb.org/srt/2026/elts/srt-2026.xsd"/>
  <xs:import namespace="http://fasb.org/us-gaap/2026" schemaLocation="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/2024-01-31" schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/dei/2026" schemaLocation="https://xbrl.sec.gov/dei/2026/dei-2026.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/ecd/2026" schemaLocation="https://xbrl.sec.gov/ecd/2026/ecd-2026.xsd"/>
  <xs:annotation>
    <xs:appinfo>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="snwv-20260630_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="snwv-20260630_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="snwv-20260630_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="snwv-20260630_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple"/>
      <link:roleType id="Cover" roleURI="http://sanuwave.com/role/Cover">
        <link:definition>0000001 - Document - Cover</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONDENSEDCONSOLIDATEDBALANCESHEETS" roleURI="http://sanuwave.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETS">
        <link:definition>9952151 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONDENSEDCONSOLIDATEDBALANCESHEETSParenthetical" roleURI="http://sanuwave.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETSParenthetical">
        <link:definition>9952152 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVELOSSINCOME" roleURI="http://sanuwave.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVELOSSINCOME">
        <link:definition>9952153 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONDENSEDCONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITYDEFICIT" roleURI="http://sanuwave.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITYDEFICIT">
        <link:definition>9952154 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS&#8217; EQUITY (DEFICIT)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWS" roleURI="http://sanuwave.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWS">
        <link:definition>9952155 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NatureoftheBusinessandBasisofPresentation" roleURI="http://sanuwave.com/role/NatureoftheBusinessandBasisofPresentation">
        <link:definition>9952156 - Disclosure - Nature of the Business and Basis of Presentation</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RestatementofPreviouslyIssuedFinancialStatements" roleURI="http://sanuwave.com/role/RestatementofPreviouslyIssuedFinancialStatements">
        <link:definition>9952157 - Disclosure - Restatement of Previously Issued Financial Statements</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryofSignificantAccountingPolicies" roleURI="http://sanuwave.com/role/SummaryofSignificantAccountingPolicies">
        <link:definition>9952158 - Disclosure - Summary of Significant Accounting Policies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AllowanceforCreditLosses" roleURI="http://sanuwave.com/role/AllowanceforCreditLosses">
        <link:definition>9952159 - Disclosure - Allowance for Credit Losses</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Inventory" roleURI="http://sanuwave.com/role/Inventory">
        <link:definition>9952160 - Disclosure - Inventory</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertyandEquipment" roleURI="http://sanuwave.com/role/PropertyandEquipment">
        <link:definition>9952161 - Disclosure - Property and Equipment</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Leases" roleURI="http://sanuwave.com/role/Leases">
        <link:definition>9952162 - Disclosure - Leases</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LongTermDebtRevolvingCreditFacilityandSeniorSecuredDebt" roleURI="http://sanuwave.com/role/LongTermDebtRevolvingCreditFacilityandSeniorSecuredDebt">
        <link:definition>9952163 - Disclosure - Long Term Debt, Revolving Credit Facility and Senior Secured Debt</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccountsPayableandAccruedExpenses" roleURI="http://sanuwave.com/role/AccountsPayableandAccruedExpenses">
        <link:definition>9952164 - Disclosure - Accounts Payable and Accrued Expenses</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Revenue" roleURI="http://sanuwave.com/role/Revenue">
        <link:definition>9952165 - Disclosure - Revenue</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensation" roleURI="http://sanuwave.com/role/StockBasedCompensation">
        <link:definition>9952166 - Disclosure - Stock-Based Compensation</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NetLossIncomeperShare" roleURI="http://sanuwave.com/role/NetLossIncomeperShare">
        <link:definition>9952167 - Disclosure - Net (Loss) Income per Share</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConcentrationofLimitedSuppliers" roleURI="http://sanuwave.com/role/ConcentrationofLimitedSuppliers">
        <link:definition>9952168 - Disclosure - Concentration of Limited Suppliers</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LicenseandOptionAgreement" roleURI="http://sanuwave.com/role/LicenseandOptionAgreement">
        <link:definition>9952169 - Disclosure - License and Option Agreement</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsandContingencies" roleURI="http://sanuwave.com/role/CommitmentsandContingencies">
        <link:definition>9952170 - Disclosure - Commitments and Contingencies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformation" roleURI="http://sanuwave.com/role/SegmentInformation">
        <link:definition>9952171 - Disclosure - Segment Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxes" roleURI="http://sanuwave.com/role/IncomeTaxes">
        <link:definition>9952172 - Disclosure - Income Taxes</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryofSignificantAccountingPoliciesPolicies" roleURI="http://sanuwave.com/role/SummaryofSignificantAccountingPoliciesPolicies">
        <link:definition>9955511 - Disclosure - Summary of Significant Accounting Policies (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RestatementofPreviouslyIssuedFinancialStatementsTables" roleURI="http://sanuwave.com/role/RestatementofPreviouslyIssuedFinancialStatementsTables">
        <link:definition>9955512 - Disclosure - Restatement of Previously Issued Financial Statements (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AllowanceforCreditLossesTables" roleURI="http://sanuwave.com/role/AllowanceforCreditLossesTables">
        <link:definition>9955513 - Disclosure - Allowance for Credit Losses (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="InventoryTables" roleURI="http://sanuwave.com/role/InventoryTables">
        <link:definition>9955514 - Disclosure - Inventory (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesTables" roleURI="http://sanuwave.com/role/LeasesTables">
        <link:definition>9955515 - Disclosure - Leases (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LongTermDebtRevolvingCreditFacilityandSeniorSecuredDebtTables" roleURI="http://sanuwave.com/role/LongTermDebtRevolvingCreditFacilityandSeniorSecuredDebtTables">
        <link:definition>9955516 - Disclosure - Long Term Debt, Revolving Credit Facility and Senior Secured Debt (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccountsPayableandAccruedExpensesTables" roleURI="http://sanuwave.com/role/AccountsPayableandAccruedExpensesTables">
        <link:definition>9955517 - Disclosure - Accounts Payable and Accrued Expenses (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueTables" roleURI="http://sanuwave.com/role/RevenueTables">
        <link:definition>9955518 - Disclosure - Revenue (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationTables" roleURI="http://sanuwave.com/role/StockBasedCompensationTables">
        <link:definition>9955519 - Disclosure - Stock-Based Compensation (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NetLossIncomeperShareTables" roleURI="http://sanuwave.com/role/NetLossIncomeperShareTables">
        <link:definition>9955520 - Disclosure - Net (Loss) Income per Share (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConcentrationofLimitedSuppliersTables" roleURI="http://sanuwave.com/role/ConcentrationofLimitedSuppliersTables">
        <link:definition>9955521 - Disclosure - Concentration of Limited Suppliers (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentReportingTables" roleURI="http://sanuwave.com/role/SegmentReportingTables">
        <link:definition>9955522 - Disclosure - Segment Reporting (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RestatementofPreviouslyIssuedFinancialStatementsConsolidatedStatementofComprehensiveLossDetails" roleURI="http://sanuwave.com/role/RestatementofPreviouslyIssuedFinancialStatementsConsolidatedStatementofComprehensiveLossDetails">
        <link:definition>9955523 - Disclosure - Restatement of Previously Issued Financial Statements - Consolidated Statement of Comprehensive Loss (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SummaryofSignificantAccountingPoliciesDetails" roleURI="http://sanuwave.com/role/SummaryofSignificantAccountingPoliciesDetails">
        <link:definition>9955524 - Disclosure - Summary of Significant Accounting Policies (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AllowanceforCreditLossesDetails" roleURI="http://sanuwave.com/role/AllowanceforCreditLossesDetails">
        <link:definition>9955525 - Disclosure - Allowance for Credit Losses (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="InventoryDetails" roleURI="http://sanuwave.com/role/InventoryDetails">
        <link:definition>9955526 - Disclosure - Inventory (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="PropertyandEquipmentDetails" roleURI="http://sanuwave.com/role/PropertyandEquipmentDetails">
        <link:definition>9955527 - Disclosure - Property and Equipment (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesNarrativeDetails" roleURI="http://sanuwave.com/role/LeasesNarrativeDetails">
        <link:definition>9955528 - Disclosure - Leases - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesScheduleofMaturitiesofOperatingLeasesDetails" roleURI="http://sanuwave.com/role/LeasesScheduleofMaturitiesofOperatingLeasesDetails">
        <link:definition>9955529 - Disclosure - Leases - Schedule of Maturities of Operating Leases (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesScheduleofMaturitiesofOperatingLeasesDetails_1" roleURI="http://sanuwave.com/role/LeasesScheduleofMaturitiesofOperatingLeasesDetails_1">
        <link:definition>9955529 - Disclosure - Leases - Schedule of Maturities of Operating Leases (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LongTermDebtRevolvingCreditFacilityandSeniorSecuredDebtScheduleofOutstandingSecuredDebtDetails" roleURI="http://sanuwave.com/role/LongTermDebtRevolvingCreditFacilityandSeniorSecuredDebtScheduleofOutstandingSecuredDebtDetails">
        <link:definition>9955530 - Disclosure - Long Term Debt, Revolving Credit Facility and Senior Secured Debt - Schedule of Outstanding Secured Debt (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LongTermDebtRevolvingCreditFacilityandSeniorSecuredDebtNarrativeDetails" roleURI="http://sanuwave.com/role/LongTermDebtRevolvingCreditFacilityandSeniorSecuredDebtNarrativeDetails">
        <link:definition>9955531 - Disclosure - Long Term Debt, Revolving Credit Facility and Senior Secured Debt - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LongTermDebtRevolvingCreditFacilityandSeniorSecuredDebtScheduleofMaturitiesofLongTermDebtDetails" roleURI="http://sanuwave.com/role/LongTermDebtRevolvingCreditFacilityandSeniorSecuredDebtScheduleofMaturitiesofLongTermDebtDetails">
        <link:definition>9955532 - Disclosure - Long Term Debt, Revolving Credit Facility and Senior Secured Debt - Schedule of Maturities of Long-Term Debt (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccountsPayableandAccruedExpensesScheduleofAccountsPayableDetails" roleURI="http://sanuwave.com/role/AccountsPayableandAccruedExpensesScheduleofAccountsPayableDetails">
        <link:definition>9955533 - Disclosure - Accounts Payable and Accrued Expenses - Schedule of Accounts Payable (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccountsPayableandAccruedExpensesScheduleofAccruedExpensesDetails" roleURI="http://sanuwave.com/role/AccountsPayableandAccruedExpensesScheduleofAccruedExpensesDetails">
        <link:definition>9955534 - Disclosure - Accounts Payable and Accrued Expenses - Schedule of Accrued Expenses (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccountsPayableandAccruedExpensesScheduleofAccruedSalesandUseTaxLiabilityDetails" roleURI="http://sanuwave.com/role/AccountsPayableandAccruedExpensesScheduleofAccruedSalesandUseTaxLiabilityDetails">
        <link:definition>9955535 - Disclosure - Accounts Payable and Accrued Expenses - Schedule of Accrued Sales and Use Tax Liability (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AccountsPayableandAccruedExpensesScheduleofImpactofSalesandUseTaxRelatedActivityDetails" roleURI="http://sanuwave.com/role/AccountsPayableandAccruedExpensesScheduleofImpactofSalesandUseTaxRelatedActivityDetails">
        <link:definition>9955536 - Disclosure - Accounts Payable and Accrued Expenses - Schedule of Impact of Sales and Use Tax Related Activity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueDetails" roleURI="http://sanuwave.com/role/RevenueDetails">
        <link:definition>9955537 - Disclosure - Revenue (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationNarrativeDetails" roleURI="http://sanuwave.com/role/StockBasedCompensationNarrativeDetails">
        <link:definition>9955538 - Disclosure - Stock-Based Compensation - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationScheduleofStockCompensationExpenseDetails" roleURI="http://sanuwave.com/role/StockBasedCompensationScheduleofStockCompensationExpenseDetails">
        <link:definition>9955539 - Disclosure - Stock-Based Compensation - Schedule of Stock Compensation Expense (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationScheduleofStockCompensationExpenseDetails_1" roleURI="http://sanuwave.com/role/StockBasedCompensationScheduleofStockCompensationExpenseDetails_1">
        <link:definition>9955539 - Disclosure - Stock-Based Compensation - Schedule of Stock Compensation Expense (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationScheduleofStockOptionsAwardActivityDetails" roleURI="http://sanuwave.com/role/StockBasedCompensationScheduleofStockOptionsAwardActivityDetails">
        <link:definition>9955540 - Disclosure - Stock-Based Compensation - Schedule of Stock Options Award Activity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationScheduleofWeightedAverageAssumptionsDetails" roleURI="http://sanuwave.com/role/StockBasedCompensationScheduleofWeightedAverageAssumptionsDetails">
        <link:definition>9955541 - Disclosure - Stock-Based Compensation - Schedule of Weighted Average Assumptions (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NetLossIncomeperShareScheduleofWeightedAverageSharesOutstandingDetails" roleURI="http://sanuwave.com/role/NetLossIncomeperShareScheduleofWeightedAverageSharesOutstandingDetails">
        <link:definition>9955542 - Disclosure - Net (Loss) Income per Share - Schedule of Weighted Average Shares Outstanding (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NetLossIncomeperShareScheduleofAntiDilutiveEquitySecuritiesDetails" roleURI="http://sanuwave.com/role/NetLossIncomeperShareScheduleofAntiDilutiveEquitySecuritiesDetails">
        <link:definition>9955543 - Disclosure - Net (Loss) Income per Share - Schedule of Anti-Dilutive Equity Securities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConcentrationofLimitedSuppliersDetails" roleURI="http://sanuwave.com/role/ConcentrationofLimitedSuppliersDetails">
        <link:definition>9955544 - Disclosure - Concentration of Limited Suppliers (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LicenseandOptionAgreementDetails" roleURI="http://sanuwave.com/role/LicenseandOptionAgreementDetails">
        <link:definition>9955545 - Disclosure - License and Option Agreement (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformationNarrativeDetails" roleURI="http://sanuwave.com/role/SegmentInformationNarrativeDetails">
        <link:definition>9955546 - Disclosure - Segment Information - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SegmentInformationScheduleofConsolidatedStatementofOperationsDetails" roleURI="http://sanuwave.com/role/SegmentInformationScheduleofConsolidatedStatementofOperationsDetails">
        <link:definition>9955547 - Disclosure - Segment Information - Schedule of Consolidated Statement of Operations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xs:appinfo>
  </xs:annotation>
  <xs:element id="snwv_OperatingLeaseLiabilityNoncurrentNetOfIncentives" abstract="false" name="OperatingLeaseLiabilityNoncurrentNetOfIncentives" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_ChangeInFairValueOfDerivativeLiabilities" abstract="false" name="ChangeInFairValueOfDerivativeLiabilities" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_APICShareBasedPaymentArrangementIncreaseForCostRecognitionShares" abstract="false" name="APICShareBasedPaymentArrangementIncreaseForCostRecognitionShares" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="snwv_SharesGrantedInLieuOfBoardOfDirectorFees" abstract="false" name="SharesGrantedInLieuOfBoardOfDirectorFees" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="snwv_StockIssuedDuringPeriodValueIssuedInLieuOfBoardOfDirectorFees" abstract="false" name="StockIssuedDuringPeriodValueIssuedInLieuOfBoardOfDirectorFees" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_AmortizationOfRightToUseLeases" abstract="false" name="AmortizationOfRightToUseLeases" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_AccountsReceivableProvisionForCreditLosses" abstract="false" name="AccountsReceivableProvisionForCreditLosses" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_ProceedsFromTenantImprovementFunds" abstract="false" name="ProceedsFromTenantImprovementFunds" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_DepositsPropertyPlantAndEquipment" abstract="false" name="DepositsPropertyPlantAndEquipment" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_StockOptionsGrantedInLieuOfCashBonus" abstract="false" name="StockOptionsGrantedInLieuOfCashBonus" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_ConversionOfAssetBasedSecuredPromissoryNotesToConvertiblePromissoryNotes" abstract="false" name="ConversionOfAssetBasedSecuredPromissoryNotesToConvertiblePromissoryNotes" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_RestrictedStockUnitsGrantedInExchangeForServices" abstract="false" name="RestrictedStockUnitsGrantedInExchangeForServices" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_ScheduleOfSalesAndExciseTaxPayableTableTextBlock" abstract="false" name="ScheduleOfSalesAndExciseTaxPayableTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="snwv_SummaryOfSalesAndUseTaxRelatedActivityTableTextBlock" abstract="false" name="SummaryOfSalesAndUseTaxRelatedActivityTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="snwv_OperatingLeaseIncrementalBorrowingRate" abstract="false" name="OperatingLeaseIncrementalBorrowingRate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="snwv_LeaseIncentiveReimbursementPaymentsReceivable" abstract="false" name="LeaseIncentiveReimbursementPaymentsReceivable" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_OperatingLeaseAnnualEscalationPercentage" abstract="false" name="OperatingLeaseAnnualEscalationPercentage" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="snwv_LesseeOperatingLeaseLiabilityToBePaidDueAfterYearFour" abstract="false" name="LesseeOperatingLeaseLiabilityToBePaidDueAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_JPMCreditAgreementMember" abstract="true" name="JPMCreditAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="snwv_SeniorSecuredDebtMember" abstract="true" name="SeniorSecuredDebtMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="snwv_SeniorSecuredPromissoryNotesPayableMember" abstract="true" name="SeniorSecuredPromissoryNotesPayableMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="snwv_CommercialBankFloatingRateCBFRMember" abstract="true" name="CommercialBankFloatingRateCBFRMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="snwv_LongTermDebtGrossCurrentMaturities" abstract="false" name="LongTermDebtGrossCurrentMaturities" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_LongTermDebtGrossExcludingCurrentMaturities" abstract="false" name="LongTermDebtGrossExcludingCurrentMaturities" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_AccruedRegistrationPenaltiesCurrent" abstract="false" name="AccruedRegistrationPenaltiesCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_SalesAndExciseTaxPenaltiesPayableCurrent" abstract="false" name="SalesAndExciseTaxPenaltiesPayableCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_SalesAndExciseTaxInterestPayableCurrent" abstract="false" name="SalesAndExciseTaxInterestPayableCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_SalesAndExciseTaxPayableRollForward" abstract="true" name="SalesAndExciseTaxPayableRollForward" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="snwv_SalesAndExciseTaxAbstract" abstract="true" name="SalesAndExciseTaxAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="snwv_SalesAndExciseTaxIncreaseForEstimatedObligations" abstract="false" name="SalesAndExciseTaxIncreaseForEstimatedObligations" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_SalesAndExciseTaxDecreaseForCashPayments" abstract="false" name="SalesAndExciseTaxDecreaseForCashPayments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_SalesAndExciseTaxDecreaseForVDASettlementAdjustmentsNet" abstract="false" name="SalesAndExciseTaxDecreaseForVDASettlementAdjustmentsNet" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_SalesAndExciseTaxIncreaseForVoluntaryDisclosureAgreement" abstract="false" name="SalesAndExciseTaxIncreaseForVoluntaryDisclosureAgreement" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_SalesAndExciseTaxIncreaseForStateLocalSalesTaxOrdinaryCourse" abstract="false" name="SalesAndExciseTaxIncreaseForStateLocalSalesTaxOrdinaryCourse" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_SalesAndExciseTaxInterestAbstract" abstract="true" name="SalesAndExciseTaxInterestAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="snwv_SalesAndExciseTaxInterestIncreaseForEstimatedObligations" abstract="false" name="SalesAndExciseTaxInterestIncreaseForEstimatedObligations" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_SalesAndExciseTaxInterestDecreaseForCashPayments" abstract="false" name="SalesAndExciseTaxInterestDecreaseForCashPayments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_SalesAndExciseTaxInterestDecreaseForVDASettlementAdjustmentsNet" abstract="false" name="SalesAndExciseTaxInterestDecreaseForVDASettlementAdjustmentsNet" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_SalesAndExciseTaxInterestIncreaseForVoluntaryDisclosureAgreement" abstract="false" name="SalesAndExciseTaxInterestIncreaseForVoluntaryDisclosureAgreement" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_SalesAndExciseTaxInterestIncreaseForStateLocalSalesTaxOrdinaryCourse" abstract="false" name="SalesAndExciseTaxInterestIncreaseForStateLocalSalesTaxOrdinaryCourse" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_SalesAndExciseTaxPenaltyAbstract" abstract="true" name="SalesAndExciseTaxPenaltyAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="snwv_SalesAndExciseTaxPenaltiesIncreaseForEstimatedObligations" abstract="false" name="SalesAndExciseTaxPenaltiesIncreaseForEstimatedObligations" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_SalesAndExciseTaxPenaltiesDecreaseForCashPayments" abstract="false" name="SalesAndExciseTaxPenaltiesDecreaseForCashPayments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_SalesAndExciseTaxPenaltiesDecreaseForVDASettlementAdjustmentsNet" abstract="false" name="SalesAndExciseTaxPenaltiesDecreaseForVDASettlementAdjustmentsNet" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_SalesAndExciseTaxPenaltiesIncreaseForVoluntaryDisclosureAgreement" abstract="false" name="SalesAndExciseTaxPenaltiesIncreaseForVoluntaryDisclosureAgreement" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_SalesAndExciseTaxPenaltiesIncreaseForStateLocalSalesTaxOrdinaryCourse" abstract="false" name="SalesAndExciseTaxPenaltiesIncreaseForStateLocalSalesTaxOrdinaryCourse" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_SalesAndExciseTaxTotalAbstract" abstract="true" name="SalesAndExciseTaxTotalAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="snwv_SalesAndExciseTaxIncludingInterestAndPenaltiesIncreaseForEstimatedObligations" abstract="false" name="SalesAndExciseTaxIncludingInterestAndPenaltiesIncreaseForEstimatedObligations" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_SalesAndExciseTaxIncludingInterestAndPenaltiesDecreaseForCashPayments" abstract="false" name="SalesAndExciseTaxIncludingInterestAndPenaltiesDecreaseForCashPayments" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_SalesAndExciseTaxIncludingInterestAndPenaltiesDecreaseForVDASettlementAdjustmentsNet" abstract="false" name="SalesAndExciseTaxIncludingInterestAndPenaltiesDecreaseForVDASettlementAdjustmentsNet" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_SalesAndExciseTaxIncludingInterestAndPenaltiesIncreaseForVoluntaryDisclosureAgreement" abstract="false" name="SalesAndExciseTaxIncludingInterestAndPenaltiesIncreaseForVoluntaryDisclosureAgreement" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_SalesAndExciseTaxIncludingInterestAndPenaltiesIncreaseForStateLocalSalesTaxOrdinaryCourse" abstract="false" name="SalesAndExciseTaxIncludingInterestAndPenaltiesIncreaseForStateLocalSalesTaxOrdinaryCourse" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_SalesAndExciseTaxBenefitExpenses" abstract="false" name="SalesAndExciseTaxBenefitExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_SalesAndExciseTaxPenaltiesBenefitExpenses" abstract="false" name="SalesAndExciseTaxPenaltiesBenefitExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_SalesAndExciseTaxInterestBenefitExpenses" abstract="false" name="SalesAndExciseTaxInterestBenefitExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_TotalSalesAndExciseTaxBenefitExpenses" abstract="false" name="TotalSalesAndExciseTaxBenefitExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_ConsumablesPartsAndAccessoriesRevenueMember" abstract="true" name="ConsumablesPartsAndAccessoriesRevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="snwv_SystemRevenueMember" abstract="true" name="SystemRevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="snwv_ExtendedWarrantyMember" abstract="true" name="ExtendedWarrantyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="snwv_LicenseFeesMember" abstract="true" name="LicenseFeesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="snwv_OtherRevenueMember" abstract="true" name="OtherRevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="snwv_A2024EquityIncentivePlanMember" abstract="true" name="A2024EquityIncentivePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="snwv_ShareBasedPaymentArrangementServiceBasedOptionMember" abstract="true" name="ShareBasedPaymentArrangementServiceBasedOptionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="snwv_ShareBasedPaymentArrangementPerformanceBasedOptionMember" abstract="true" name="ShareBasedPaymentArrangementPerformanceBasedOptionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="snwv_ShareBasedPaymentArrangementMarketBasedOptionMember" abstract="true" name="ShareBasedPaymentArrangementMarketBasedOptionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="snwv_SpecificRevenueRecognizedMember" abstract="true" name="SpecificRevenueRecognizedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="snwv_VariousOperationsRelatedMilestonesMember" abstract="true" name="VariousOperationsRelatedMilestonesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="snwv_DefinedStockPriceTargetMember" abstract="true" name="DefinedStockPriceTargetMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="snwv_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardsGrantedNumberOfEmployees" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardsGrantedNumberOfEmployees" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="snwv_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingGrantedWeightedAverageRemainingContractualTerm" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingGrantedWeightedAverageRemainingContractualTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="snwv_IncreaseDecreaseInFairValueAdjustment" abstract="false" name="IncreaseDecreaseInFairValueAdjustment" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="snwv_EarningsPerShareBasicAndDilutedEPSAbstract" abstract="true" name="EarningsPerShareBasicAndDilutedEPSAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="snwv_VendorAMember" abstract="true" name="VendorAMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="snwv_VendorBMember" abstract="true" name="VendorBMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="snwv_VendorCMember" abstract="true" name="VendorCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="snwv_LicenseAndOptionAgreementMember" abstract="true" name="LicenseAndOptionAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="snwv_CollaborativeArrangementTerm" abstract="false" name="CollaborativeArrangementTerm" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="snwv_ReportableSegmentMember" abstract="true" name="ReportableSegmentMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
</xs:schema>
