<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.26.1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>102</ContextCount>
  <ElementCount>247</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>36</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>6</UnitCount>
  <MyReports>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>995200090 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DocumentDocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R2.htm</HtmlFileName>
      <LongName>995200100 - Statement - Consolidated Balance Sheets</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/StatementConsolidatedBalanceSheets</Role>
      <ShortName>Consolidated Balance Sheets</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>2</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R3.htm</HtmlFileName>
      <LongName>995200105 - Statement - Consolidated Balance Sheets (Parenthetical)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/StatementConsolidatedBalanceSheetsParenthetical</Role>
      <ShortName>Consolidated Balance Sheets (Parenthetical)</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>3</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R4.htm</HtmlFileName>
      <LongName>995200200 - Statement - Consolidated Statements of Operations and Comprehensive Loss</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/StatementConsolidatedStatementsOfOperationsAndComprehensiveLoss</Role>
      <ShortName>Consolidated Statements of Operations and Comprehensive Loss</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>4</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R5.htm</HtmlFileName>
      <LongName>995200300 - Statement - Consolidated Statements of Stockholders' Equity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/StatementConsolidatedStatementsOfStockholdersEquity</Role>
      <ShortName>Consolidated Statements of Stockholders' Equity</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>5</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R6.htm</HtmlFileName>
      <LongName>995200400 - Statement - Consolidated Statements of Cash Flows</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/StatementConsolidatedStatementsOfCashFlows</Role>
      <ShortName>Consolidated Statements of Cash Flows</ShortName>
      <MenuCategory>Statements</MenuCategory>
      <Position>6</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R7.htm</HtmlFileName>
      <LongName>995210101 - Disclosure - Business organization</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureBusinessOrganization</Role>
      <ShortName>Business organization</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>7</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R8.htm</HtmlFileName>
      <LongName>995210201 - Disclosure - Summary of significant accounting policies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureSummaryOfSignificantAccountingPolicies</Role>
      <ShortName>Summary of significant accounting policies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>8</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R9.htm</HtmlFileName>
      <LongName>995210301 - Disclosure - Selected balance sheet information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureSelectedBalanceSheetInformation</Role>
      <ShortName>Selected balance sheet information</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>9</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R10.htm</HtmlFileName>
      <LongName>995210401 - Disclosure - Debt</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureDebt</Role>
      <ShortName>Debt</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>10</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R11.htm</HtmlFileName>
      <LongName>995210501 - Disclosure - Leases</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureLeases</Role>
      <ShortName>Leases</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>11</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R12.htm</HtmlFileName>
      <LongName>995210601 - Disclosure - Stockholders' equity</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureStockholdersEquity</Role>
      <ShortName>Stockholders' equity</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>12</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R13.htm</HtmlFileName>
      <LongName>995210701 - Disclosure - Stock-based compensation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureStockBasedCompensation</Role>
      <ShortName>Stock-based compensation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>13</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R14.htm</HtmlFileName>
      <LongName>995210801 - Disclosure - Income taxes</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureIncomeTaxes</Role>
      <ShortName>Income taxes</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>14</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R15.htm</HtmlFileName>
      <LongName>995210901 - Disclosure - Loss Per Share</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureLossPerShare</Role>
      <ShortName>Loss Per Share</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>15</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R16.htm</HtmlFileName>
      <LongName>995211001 - Disclosure - Commitments and contingencies</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureCommitmentsAndContingencies</Role>
      <ShortName>Commitments and contingencies</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>16</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R17.htm</HtmlFileName>
      <LongName>995211101 - Disclosure - Employee benefit plans</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureEmployeeBenefitPlans</Role>
      <ShortName>Employee benefit plans</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>17</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R18.htm</HtmlFileName>
      <LongName>995211201 - Disclosure - Segment, geographic information and revenue disaggregation</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureSegmentGeographicInformationAndRevenueDisaggregation</Role>
      <ShortName>Segment, geographic information and revenue disaggregation</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>18</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R19.htm</HtmlFileName>
      <LongName>995410 - Disclosure - Pay vs Performance Disclosure</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/ecd/role/PvpDisclosure</Role>
      <ShortName>Pay vs Performance Disclosure</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>19</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R20.htm</HtmlFileName>
      <LongName>995445 - Disclosure - Insider Trading Arrangements</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://xbrl.sec.gov/ecd/role/InsiderTradingArrangements</Role>
      <ShortName>Insider Trading Arrangements</ShortName>
      <MenuCategory>Notes</MenuCategory>
      <Position>20</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R21.htm</HtmlFileName>
      <LongName>99920202 - Disclosure - Summary of significant accounting policies (Policies)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureSummaryOfSignificantAccountingPoliciesPolicies</Role>
      <ShortName>Summary of significant accounting policies (Policies)</ShortName>
      <MenuCategory>Policies</MenuCategory>
      <Position>21</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R22.htm</HtmlFileName>
      <LongName>99930303 - Disclosure - Selected balance sheet information (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureSelectedBalanceSheetInformationTables</Role>
      <ShortName>Selected balance sheet information (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.cvrx.com/role/DisclosureSelectedBalanceSheetInformation</ParentRole>
      <Position>22</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R23.htm</HtmlFileName>
      <LongName>99930403 - Disclosure - Debt (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureDebtTables</Role>
      <ShortName>Debt (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.cvrx.com/role/DisclosureDebt</ParentRole>
      <Position>23</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R24.htm</HtmlFileName>
      <LongName>99930503 - Disclosure - Leases (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureLeasesTables</Role>
      <ShortName>Leases (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.cvrx.com/role/DisclosureLeases</ParentRole>
      <Position>24</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R25.htm</HtmlFileName>
      <LongName>99930703 - Disclosure - Stock-based compensation (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureStockBasedCompensationTables</Role>
      <ShortName>Stock-based compensation (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.cvrx.com/role/DisclosureStockBasedCompensation</ParentRole>
      <Position>25</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R26.htm</HtmlFileName>
      <LongName>99930903 - Disclosure - Loss Per Share (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureLossPerShareTables</Role>
      <ShortName>Loss Per Share (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.cvrx.com/role/DisclosureLossPerShare</ParentRole>
      <Position>26</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R27.htm</HtmlFileName>
      <LongName>99931203 - Disclosure - Segment, geographic information and revenue disaggregation (Tables)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureSegmentGeographicInformationAndRevenueDisaggregationTables</Role>
      <ShortName>Segment, geographic information and revenue disaggregation (Tables)</ShortName>
      <MenuCategory>Tables</MenuCategory>
      <ParentRole>http://www.cvrx.com/role/DisclosureSegmentGeographicInformationAndRevenueDisaggregation</ParentRole>
      <Position>27</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R28.htm</HtmlFileName>
      <LongName>99940301 - Disclosure - Selected balance sheet information (Schedule of Inventory) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureSelectedBalanceSheetInformationScheduleOfInventoryDetails</Role>
      <ShortName>Selected balance sheet information (Schedule of Inventory) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.cvrx.com/role/DisclosureSelectedBalanceSheetInformationTables</ParentRole>
      <Position>28</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R29.htm</HtmlFileName>
      <LongName>99940302 - Disclosure - Selected balance sheet information (Schedule of Property and Equipment) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureSelectedBalanceSheetInformationScheduleOfPropertyAndEquipmentDetails</Role>
      <ShortName>Selected balance sheet information (Schedule of Property and Equipment) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.cvrx.com/role/DisclosureSelectedBalanceSheetInformationTables</ParentRole>
      <Position>29</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R30.htm</HtmlFileName>
      <LongName>99940303 - Disclosure - Selected balance sheet information (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureSelectedBalanceSheetInformationNarrativeDetails</Role>
      <ShortName>Selected balance sheet information (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.cvrx.com/role/DisclosureSelectedBalanceSheetInformationTables</ParentRole>
      <Position>30</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R31.htm</HtmlFileName>
      <LongName>99940304 - Disclosure - Selected balance sheet information (Schedule of Accrued Expenses) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureSelectedBalanceSheetInformationScheduleOfAccruedExpensesDetails</Role>
      <ShortName>Selected balance sheet information (Schedule of Accrued Expenses) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.cvrx.com/role/DisclosureSelectedBalanceSheetInformationTables</ParentRole>
      <Position>31</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R32.htm</HtmlFileName>
      <LongName>99940401 - Disclosure - Debt (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureDebtNarrativeDetails</Role>
      <ShortName>Debt (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.cvrx.com/role/DisclosureDebtTables</ParentRole>
      <Position>32</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R33.htm</HtmlFileName>
      <LongName>99940402 - Disclosure - Debt (Maturities of debt) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureDebtMaturitiesOfDebtDetails</Role>
      <ShortName>Debt (Maturities of debt) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.cvrx.com/role/DisclosureDebtTables</ParentRole>
      <Position>33</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R34.htm</HtmlFileName>
      <LongName>99940501 - Disclosure - Leases (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureLeasesDetails</Role>
      <ShortName>Leases (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.cvrx.com/role/DisclosureLeasesTables</ParentRole>
      <Position>34</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R35.htm</HtmlFileName>
      <LongName>99940502 - Disclosure - Leases (Maturities of lease liability) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureLeasesMaturitiesOfLeaseLiabilityDetails</Role>
      <ShortName>Leases (Maturities of lease liability) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.cvrx.com/role/DisclosureLeasesTables</ParentRole>
      <Position>35</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R36.htm</HtmlFileName>
      <LongName>99940601 - Disclosure - Stockholders' equity (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureStockholdersEquityNarrativeDetails</Role>
      <ShortName>Stockholders' equity (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.cvrx.com/role/DisclosureStockholdersEquity</ParentRole>
      <Position>36</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R37.htm</HtmlFileName>
      <LongName>99940701 - Disclosure - Stock-based compensation (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureStockBasedCompensationNarrativeDetails</Role>
      <ShortName>Stock-based compensation (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.cvrx.com/role/DisclosureStockBasedCompensationTables</ParentRole>
      <Position>37</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R38.htm</HtmlFileName>
      <LongName>99940702 - Disclosure - Stock-based compensation (Summary of Stock Option Activity) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureStockBasedCompensationSummaryOfStockOptionActivityDetails</Role>
      <ShortName>Stock-based compensation (Summary of Stock Option Activity) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.cvrx.com/role/DisclosureStockBasedCompensationTables</ParentRole>
      <Position>38</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R39.htm</HtmlFileName>
      <LongName>99940703 - Disclosure - Stock-based compensation (Schedule of RSU Activity) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureStockBasedCompensationScheduleOfRsuActivityDetails</Role>
      <ShortName>Stock-based compensation (Schedule of RSU Activity) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.cvrx.com/role/DisclosureStockBasedCompensationTables</ParentRole>
      <Position>39</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R40.htm</HtmlFileName>
      <LongName>99940704 - Disclosure - Disclosure - Stock-based compensation (Schedule of PSU Activity) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureDisclosureStockBasedCompensationScheduleOfPsuActivityDetails</Role>
      <ShortName>Disclosure - Stock-based compensation (Schedule of PSU Activity) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <Position>40</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R41.htm</HtmlFileName>
      <LongName>99940705 - Disclosure - Stock-based compensation (Non Option Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureStockBasedCompensationNonOptionNarrativeDetails</Role>
      <ShortName>Stock-based compensation (Non Option Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.cvrx.com/role/DisclosureStockBasedCompensationTables</ParentRole>
      <Position>41</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R42.htm</HtmlFileName>
      <LongName>99940706 - Disclosure - Stock-based compensation (Employee Stock Purchase Plan) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureStockBasedCompensationEmployeeStockPurchasePlanDetails</Role>
      <ShortName>Stock-based compensation (Employee Stock Purchase Plan) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.cvrx.com/role/DisclosureStockBasedCompensationTables</ParentRole>
      <Position>42</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R43.htm</HtmlFileName>
      <LongName>99940707 - Disclosure - Stock-based compensation (Assumptions Used in Determine the Grant Date Fair Value) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureStockBasedCompensationAssumptionsUsedInDetermineGrantDateFairValueDetails</Role>
      <ShortName>Stock-based compensation (Assumptions Used in Determine the Grant Date Fair Value) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.cvrx.com/role/DisclosureStockBasedCompensationTables</ParentRole>
      <Position>43</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R44.htm</HtmlFileName>
      <LongName>99940708 - Disclosure - Stock-based compensation (Recognized Stock-Based Compensation Expense) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureStockBasedCompensationRecognizedStockBasedCompensationExpenseDetails</Role>
      <ShortName>Stock-based compensation (Recognized Stock-Based Compensation Expense) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.cvrx.com/role/DisclosureStockBasedCompensationTables</ParentRole>
      <Position>44</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R45.htm</HtmlFileName>
      <LongName>99940801 - Disclosure - Income taxes (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureIncomeTaxesNarrativeDetails</Role>
      <ShortName>Income taxes (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.cvrx.com/role/DisclosureIncomeTaxes</ParentRole>
      <Position>45</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R46.htm</HtmlFileName>
      <LongName>99940901 - Disclosure - Loss Per Share (Basic and Diluted Net Loss per Share) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureLossPerShareBasicAndDilutedNetLossPerShareDetails</Role>
      <ShortName>Loss Per Share (Basic and Diluted Net Loss per Share) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.cvrx.com/role/DisclosureLossPerShareTables</ParentRole>
      <Position>46</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R47.htm</HtmlFileName>
      <LongName>99940902 - Disclosure - Loss Per Share (Antidilutive Securities Excluded from Computation of Earnings Per Share) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureLossPerShareAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareDetails</Role>
      <ShortName>Loss Per Share (Antidilutive Securities Excluded from Computation of Earnings Per Share) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.cvrx.com/role/DisclosureLossPerShareTables</ParentRole>
      <Position>47</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R48.htm</HtmlFileName>
      <LongName>99941001 - Disclosure - Commitments and contingencies (Narrative) (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureCommitmentsAndContingenciesNarrativeDetails</Role>
      <ShortName>Commitments and contingencies (Narrative) (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.cvrx.com/role/DisclosureCommitmentsAndContingencies</ParentRole>
      <Position>48</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R49.htm</HtmlFileName>
      <LongName>99941101 - Disclosure - Employee benefit plans (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureEmployeeBenefitPlansDetails</Role>
      <ShortName>Employee benefit plans (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.cvrx.com/role/DisclosureEmployeeBenefitPlans</ParentRole>
      <Position>49</Position>
    </Report>
    <Report instance="cvrx-20260331x10q.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R50.htm</HtmlFileName>
      <LongName>99941201 - Disclosure - Segment, geographic information and revenue disaggregation (Details)</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.cvrx.com/role/DisclosureSegmentGeographicInformationAndRevenueDisaggregationDetails</Role>
      <ShortName>Segment, geographic information and revenue disaggregation (Details)</ShortName>
      <MenuCategory>Details</MenuCategory>
      <ParentRole>http://www.cvrx.com/role/DisclosureSegmentGeographicInformationAndRevenueDisaggregationTables</ParentRole>
      <Position>50</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File>cvrx-20260331.xsd</File>
    <File>cvrx-20260331_cal.xml</File>
    <File>cvrx-20260331_def.xml</File>
    <File>cvrx-20260331_lab.xml</File>
    <File>cvrx-20260331_pre.xml</File>
    <File doctype="10-Q" isDefinitelyFs="true" isUsgaap="true" original="cvrx-20260331x10q.htm">cvrx-20260331x10q.htm</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy items="450">http://fasb.org/us-gaap/2025</BaseTaxonomy>
    <BaseTaxonomy items="31">http://xbrl.sec.gov/dei/2025</BaseTaxonomy>
    <BaseTaxonomy items="4">http://xbrl.sec.gov/ecd/2025</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>true</HasCalculationLinkbase>
</FilingSummary>
