Equity Components [Axis] Common Stock [Member] Additional Paid-in Capital [Member] Retained Earnings [Member] AOCI Attributable to Parent [Member] Product and Service [Axis] WiSE CRT System [Member] Surgical tool kits [Member] Battery replacements [Member] Cash and Cash Equivalents [Axis] Cash [Member] Money Market Funds [Member] Asset-Backed Securities [Member] Commercial Paper [Member] Corporate Bond Securities [Member] US Treasury Securities [Member] Fair Value Hierarchy and NAV [Axis] Fair Value, Inputs, Level 1 [Member] Measurement Frequency [Axis] Fair Value, Recurring [Member] Fair Value, Inputs, Level 2 [Member] Fair Value, Inputs, Level 3 [Member] Long-Lived Tangible Asset [Axis] Equipment [Member] Computer Software [Member] Leasehold Improvements [Member] Construction in Progress [Member] Legal Entity [Axis] Runway Growth Finance Corp [Member] Class of Stock [Axis] Convertible Preferred Stock [Member] Plan Name [Axis] Common Stock Warrants [Member] 2013 Equity Incentive Plan [Member] 2021 Equity Incentive Plan [Member] Outside of 2021 Equity Incentive Plan [Member] 2021 Plan [Member] 2013 Plan [Member] Award Type [Axis] Stock options [Member] Unvested stock options [Member] Equity Option [Member] Statistical Measurement [Axis] Minimum [Member] Maximum [Member] Income Statement Locations [Axis] Cost of goods [Member] Research and development [Member] General and administrative [Member] Warrant [Member] Award Date [Axis] June 30, 2016 [Member] October 30, 2017 [Member] February 28, 2018 [Member] August 26, 2019 [Member] March 13, 2020 [Member] March 25, 2020 [Member] February 12, 2021 [Member] June 25, 2021 [Member] August 16, 2021 [Member] October 4, 2021 [Member] Antidilutive Securities [Axis] Geographical [Axis] UNITED STATES International [Member] Engineering and development [Member] Clinical and regulatory [Member] Selling and marketing [Member] Cover [Abstract] Document Type Amendment Flag Amendment Description Document Registration Statement Document Annual Report Document Quarterly Report Document Transition Report Document Shell Company Report Document Shell Company Event Date Document Period Start Date Document Period End Date Document Fiscal Period Focus Document Fiscal Year Focus Current Fiscal Year End Date Entity File Number Entity Registrant Name Entity Central Index Key Entity Primary SIC Number Entity Tax Identification Number Entity Incorporation, State or Country Code Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Three Entity Address, City or Town Entity Address, State or Province Entity Address, Country Entity Address, Postal Zip Code Country Region City Area Code Local Phone Number Extension Written Communications Soliciting Material Pre-commencement Tender Offer Pre-commencement Issuer Tender Offer Title of 12(b) Security No Trading Symbol Flag Trading Symbol Security Exchange Name Title of 12(g) Security Security Reporting Obligation Annual Information Form Audited Annual Financial Statements Entity Well-known Seasoned Issuer Entity Voluntary Filers Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Small Business Entity Emerging Growth Company Elected Not To Use the Extended Transition Period Document Accounting Standard Other Reporting Standard Item Number Entity Shell Company Entity Public Float Entity Bankruptcy Proceedings, Reporting Current Entity Common Stock, Shares Outstanding Documents Incorporated by Reference [Text Block] Statement of Financial Position [Abstract] ASSETS Current assets: Cash and cash equivalents Marketable securities Accounts and other receivables, net Inventory Prepaid expenses Other current assets Total current assets Restricted cash, noncurrent Property and equipment, net Right of use operating lease asset Marketable securities Inventory, noncurrent Other assets TOTAL ASSETS LIABILITIES AND STOCKHOLDERS' EQUITY Current liabilities: Accounts payable Accrued expenses and other liabilities Interest payable Operating lease liability Total current liabilities Other liabilities Operating lease liability Notes payable, net Total liabilities Commitments and contingencies (Note 16) STOCKHOLDERS' EQUITY Common stock, $0.0001 par value; 600,000,000 shares authorized, 45,055,736 and 45,025,917 shares issued and outstanding as of March 31, 2026 and December 31, 2025, respectively Additional paid-in capital Accumulated deficit Accumulated other comprehensive income Total stockholders' equity TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY Common stock, par value Common stock, shares authorized Common stock, shares issued Common stock, shares outstanding Income Statement [Abstract] Revenue Cost of goods sold Gross profit Operating expenses: Research and development Selling, general and administrative Total operating expenses Loss from operations Other (expense) income: Interest expense Interest income (Loss) on foreign currency Total other (expense), net Loss before income taxes Income tax expense Net loss  Net loss per share attributable to common stockholders: Net loss per share attributable to common stockholders, basic Net loss per share attributable to common stockholders, diluted Weighted-average number of common shares outstanding: Weighted-average number of common shares outstanding, basic Weighted-average number of common shares outstanding, diluted Net loss Other comprehensive loss Change in unrealized loss on marketable securities Foreign currency translation adjustments Total other comprehensive loss Comprehensive loss Statement [Table] Statement [Line Items] Beginning balance, value Beginning balance, shares Exercise of stock options Exercise of stock options, shares Stock-based compensation Fractional share adjustment Fractional share adjustment, shares Net loss Other comprehensive loss Ending balance, value Ending balance, shares Statement of Cash Flows [Abstract] Cash flows from operating activities: Adjustment to reconcile net loss to cash used in operating activities: Depreciation and amortization Amortization of deferred loan costs and discount on notes payable Lease amortization Stock-based compensation Accretion of discount on marketable securities Changes in operating assets and liabilities: Accounts and other receivables Inventory Prepaid expenses Other assets Accounts payable Accrued expenses and other liabilities Interest payable Operating lease liability Net cash used in operating activities Cash flows from investing activities: Purchase of property and equipment Maturities of marketable securities Sales of marketable securities Net cash provided by investing activities Cash flows from financing activities: Repayment of notes payable Proceeds from exercise of stock options Net cash provided by financing activities Effect of exchange rate change on cash Net change in cash, cash equivalents, and restricted cash Cash, cash equivalents, and restricted cash, beginning of the period Cash, cash equivalents, and restricted cash, end of the period Supplemental disclosure of cash flow information Cash paid for interest expense Supplemental disclosure of non-cash investing and financing activities: Purchases of property and equipment not yet paid Initial recognition of right of use asset and operating lease liability Accounting Policies [Abstract] Business and organization Organization, Consolidation and Presentation of Financial Statements [Abstract] Going concern Summary of significant accounting policies Cash and Cash Equivalents [Abstract] Cash, cash equivalents, and marketable securities Fair Value Disclosures [Abstract] Fair value measurement Consolidated Balance Sheet Components Condensed consolidated balance sheet components Leases Leases Debt Disclosure [Abstract] Notes payable Convertible Preferred Stock Convertible preferred stock Equity [Abstract] Common stock Share-Based Payment Arrangement [Abstract] Stock-based compensation Guarantees and Product Warranties [Abstract] Warrants Income Tax Disclosure [Abstract] Income taxes Earnings Per Share [Abstract] Net loss per share Segment Reporting [Abstract] Segment information Commitments and Contingencies Disclosure [Abstract] Commitments and contingencies Subsequent Events [Abstract] Subsequent events Insider Trading Arrangements [Line Items] Rule 10b5-1 Arrangement Adopted [Flag] Non-Rule 10b5-1 Arrangement Adopted [Flag] Rule 10b5-1 Arrangement Terminated [Flag] Non-Rule 10b5-1 Arrangement Terminated [Flag] Basis of presentation Use of estimates Significant Accounting Policies Revenue Recognition Deferred revenue Interest Income Recently adopted accounting pronouncements Recently issued accounting pronouncements not yet adopted Schedule of disaggregated revenue Schedule of deferred revenue Schedule of interest income Schedule reconciliation of cash, cash equivalents, and restricted cash Schedule of cash and cash equivalents Schedule of unrealized gains and losses Schedule of marketable securities Schedule of contractual maturities Schedule of fair value, liabilities measured on recurring basis Schedule of non trade receivables Schedule of inventory consisted Schedule of property and equipment, net Schedule of accrued expenses and other liabilities Schedule of warranty Schedule of operating leases Schedule of lease costs Schedule of non-cancellable operating leases Schedule of notes payable Schedule of maturities notes payable Schedule of common stock Schedule of stock option activity Schedule of assumptions used Schedule of stock-based compensation expense Schedule of warrants were outstanding Schedule of basic and diluted net loss per share Schedule of anti-dilutive shares Schedule of segment revenue by geography based Schedule of segment information Reverse stock split Reclassified amount Net loss Net cash used in operating activities Working capital Accumulated deficit Nature of Operation, Product Information, Concentration of Risk [Table] Product Information [Line Items] Total revenue Balance, beginning of period Deferral of revenue Recognition of revenue Balance, end of period Interest income Accretion of discount on marketable securities, net Total interest income Cash and cash equivalents Total cash, cash equivalents, and restricted cash Cash and Cash Equivalent [Table] Cash and Cash Equivalents [Line Items] Total cash and cash equivalents Total marketable securities, short-term Total marketable securities, long-term Total cash, cash equivalents, and marketable securities Amortized Cost Unrealized Gains Unrealized losses Fair Value Loss Position for Less Than 12 Months, Fair Value Loss Position for Less Than 12 Months, Unrealized Losses Loss Position for 12 Months or Greater, Fair Value Loss Position for 12 Months or Greater, Unrealized Losses Total, Fair Value Total, Unrealized Losses One year or less Two years to three years Total minimum payments Fair Value, off-Balance-Sheet Risk [Table] Fair Value, off-Balance-Sheet Risks, Disclosure Information [Line Items] Cash equivalents Marketable securities Total Trade receivables Non-trade receivables Reimbursement for leasehold improvements Accounts and other receivables Less: provision for credit losses Accounts and other receivables, net Raw materials Work in process Finished goods Inventory Inventory – current Inventory – noncurrent Property, Plant and Equipment [Table] Property, Plant and Equipment [Line Items] Total property and equipment Less accumulated depreciation and amortization Total property and equipment, net Accrued compensation and related liabilities Accrued development expenses Accrued warranty reserves Deferred revenue Accrued other expenses Accrued expenses and other liabilities Beginning of period Warranty reserve accrued during the period Settlement of warranty claims End of period Warranty reserve - current Warranty reserve - noncurrent Provision for other credit losses Depreciation and amortization expense Impairments loss Lease liability, current Lease liability, noncurrent Weighted-average remaining lease term Weighted-average discount rate Operating lease costs Variable lease costs Short-term lease costs Total lease expense 2026 (remaining nine months) 2027 2028 2029 2030 Thereafter Total undiscounted lease payments Less: effects of discounting Total operating lease liabilities Operating lease liability Tenant improvement allowance Reimbursements received Additional reimbursements received Notes payable, current Current portion of notes payable Notes payable, noncurrent Long-term portion of notes payable Less: unamortized deferred loan costs Less: unamortized discount Notes payable, noncurrent, net Total notes payable, net 2026 2027 Total minimum payments Outstanding principal amount Maturity date Debt payment Amortization of debt discount Unamortized debt discounts Loan costs Amortization of loan costs Unamortized loan costs Preferred stock, shares authorized Preferred stock, shares issued Preferred stock, shares outstanding Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Total shares of common stock reserved for issuance Dividends Shares outstanding at begining Weighted average exercise price at begining Weighted-average remaining contractual life Shares, granted Weighted average exercise price, granted Shares, cancelled Weighted Average Exercise Price, cancelled Shares, exercised Weighted Average Exercise Price, exercised Shares outstanding at ending Weighted average exercise price at ending Shares vested and expected to vest Weighted-average exercise price, vested and expected to vest Weighted-average remaining contractual life (in years), vested and expected to vest Shares, exercisable Weighted average exercise price, exercisable Weighted-average remaining contractual life (in years), exercisable Expected term (in years) Expected volatility Expected dividend yield Risk-free interest rate IncomeStatementLocationsAxis [Axis] Stock-based compensation expense Common stock reserved Remained shares outstanding Shares available for grant Weighted-average grant-date fair values Unamortized stock-based compensation cost Weighted average period Warrant issuance date Shares of common stock issuable for outstanding warrants Exercise price Expiration date Weighted-average exercise price of outstanding warrants Weighted-average remaining contractual life Effective tax rate Valuation allowance Uncertain tax positions Net loss attributable to common stockholders, basic Net loss attributable to common stockholders, diluted Weighted-average number of shares outstanding, basic Weighted-average number of shares outstanding, diluted Antidilutive Security, Excluded EPS Calculation [Table] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Total dilutive shares Schedule of Revenues from External Customers and Long-Lived Assets [Table] Revenues from External Customers and Long-Lived Assets [Line Items] Total Revenue Total research and development expenses Total selling, general and administrative Obligations Reverse stock split shares Assets, Current Assets Liabilities, Current Liabilities Equity, Attributable to Parent Liabilities and Equity Gross Profit Operating Expenses Operating Income (Loss) Interest Expense, Operating and Nonoperating Nonoperating Income (Expense) Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Income Tax Expense (Benefit) Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax, Portion Attributable to Parent Other Comprehensive Income (Loss), Net of Tax Comprehensive Income (Loss), Net of Tax, Attributable to Parent Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Amortization of Deferred Loan Origination Fees, Net Investment Income, Amortization of Discount Increase (Decrease) in Accounts and Other Receivables Increase (Decrease) in Inventories Increase (Decrease) in Prepaid Expense Increase (Decrease) in Other Operating Assets Increase (Decrease) in Accounts Payable Increase (Decrease) in Other Accrued Liabilities Increase (Decrease) in Interest Payable, Net Increase (Decrease) in Operating Lease Liability Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Payments to Acquire Property, Plant, and Equipment Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Lessee, Operating Leases [Text Block] Share-Based Payment Arrangement [Text Block] Deferred Revenue Interest Income, Other Interest Income, Operating Debt Securities, Available-for-Sale, Unrealized Loss Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months Debt Securities, Available-for-Sale, Unrealized Loss Position Marketable Securities Unbilled Contracts Receivable Allowance for Doubtful Accounts, Premiums and Other Receivables Unbilled Receivables, Current Inventory, Gross InventoryCurrent Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Standard and Extended Product Warranty Accrual Standard and Extended Product Warranty Accrual, Decrease for Payments Operating Lease, Expense UndiscountedLeasePayments Lessee, Operating Lease, Liability, Undiscounted Excess Amount UnamortizedDeferredLoanCosts Debt Instrument, Unamortized Discount, Noncurrent Notes Payable Long-Term Debt, Maturity, Year Two Long-Term Debt Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested, Number of Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Warrants and Rights Outstanding, Term