Document And Entity Information Dividend yield Note To Financial Statement Details Textual Significant Accounting Policies us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths 2026 Note 2 - Summary of Significant Accounting Policies us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo 2027 Note 3 - Fair Value of Financial Instruments Risk-free interest rate Clinical trial fees and costs Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to clinical trial fees and costs. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). Note 4 - Balance Sheet Components Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Note 6 - Stockholders' Equity and Stock-based Compensation Note 7 - Commitments and Contingencies us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths 2026 Note 8 - Segment Reporting plse_NumberOfSharesPerUnitIssued Number of Shares Per Unit Issued (in shares) Number of shares of stock issued or issuable for each unit. Note 2 - Summary of Significant Accounting Policies - Antidilutive Securities (Details) Note 3 - Fair Value of Financial Instruments - Financial Assets Measured on a Recurring Basis (Details) Note 4 - Balance Sheet Components - Property and Equipment, Net (Details) Note 4 - Balance Sheet Components - Intangible Assets, Net (Details) Note 4 - Balance Sheet Components - Schedule of Amortization of Intangible Assets (Details) Expected volatility us-gaap_ShareBasedCompensation Stock-based compensation Note 4 - Balance Sheet Components - Accrued Expenses (Details) Other assets Note 6 - Stockholders' Equity and Stock-based Compensation - Summary of Stock Option Activity (Details) us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear 2025 (remaining 9 months) us-gaap_LiabilitiesCurrent Total current liabilities Note 6 - Stockholders' Equity and Stock-based Compensation - Summary of Time-based Option Activity (Details) Note 6 - Stockholders' Equity and Stock-based Compensation - Summary of Performance Option Activity (Details) us-gaap_FiniteLivedIntangibleAssetUsefulLife Finite-Lived Intangible Asset, Useful Life (Year) Note 6 - Stockholders' Equity and Stock-based Compensation - Option Assumptions (Details) Expected term in years (Year) Note 6 - Stockholders' Equity and Stock-based Compensation - Summary of Market-based Option Activity (Details) Rights Offering Warrants [Member] Represents Rights Offering Warrants. Earnings Per Share, Policy [Policy Text Block] Note 6 - Stockholders' Equity and Stock-based Compensation - Summary of Performance and Market-based Option Activity (Details) Note 6 - Stockholders' Equity and Stock-based Compensation - ESPP Assumptions (Details) us-gaap_BusinessCombinationConsiderationTransferred1 Business Combination, Consideration Transferred, Total Note 6 - Stockholders' Equity and Stock-based Compensation - Stock-based Compensation Expense (Details) plse_ClassOfWarrantOrRightPercentageRequiredForRedemption Class of Warrant or Right, Percentage Required for Redemption The percentage required for redemption of warrant or right. Note 7 - Commitments and Contingencies - Information Related to Right-of-use Assets and Lease Liabilities (Details) plse_IncreaseInSharesAvailableForIssuanceThresholdOfCommonStockOutstandingPercent Increase in Shares Available for Issuance, Threshold of Common Stock Outstanding, Percent Percentage of threshold of common stock outstanding for increase in shares available for issuance. Note 8 - Segment Reporting - Reconciliation of Net Loss (Details) plse_IncreaseInSharesAvailableForIssuanceThresholdOfCommonStockOutstandingNumberOfShares Increase in Shares Available for Issuance, Threshold of Common Stock Outstanding, Number of Shares (in shares) The number of shares threshold for increase in shares available for issuance. Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] Notes To Financial Statements The 2017 Inducement Equity Incentive Plan [Member] Represents the 2017 Inducement Equity Incentive Plan. Notes To Financial Statements [Abstract] plse_ClassOfWarrantsOrRightsRedemptionPricePerShare Class of Warrants or Rights, Redemption Price Per Share (in dollars per share) Per share redemption price of warrants or rights. us-gaap_AssetsFairValueDisclosure Total assets measured at fair value Share-Based Payment Arrangement, Option, Activity [Table Text Block] us-gaap_NumberOfBusinessesAcquired Number of Businesses Acquired The 2017 Plan [Member] Represents the 2017 plan. The 2017 Employee Stock Purchase Plan [Member] Represents the 2017 Employee Stock Purchase Plan. Schedule of Finite-Lived Intangible Assets [Table Text Block] Time-based Options [Member] Represents time-based options. plse_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsGrantsInPeriodIntrinsicValue Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Intrinsic Value Amount of accumulated difference between fair value of underlying shares on dates of grant and exercise price on options granted. us-gaap_LesseeOperatingLeaseTermOfContract Lessee, Operating Lease, Term of Contract (Year) us-gaap_LesseeOperatingLeaseRenewalTerm Lessee, Operating Lease, Renewal Term (Year) Performance Options [Member] Represents performance options. Depreciation Depreciation us-gaap_LiabilitiesFairValueDisclosure Liabilities, Fair Value Disclosure plse_ClassOfWarrantOrRightExpiredredeemedDuringPeriod Class of Warrant or Right, Expired/Redeemed During Period (in shares) The number of warrants or rights expired/redeemed during period. us-gaap_SharesIssuedPricePerShare Shares Issued, Price Per Share (in dollars per share) The 2015 Plan, 2017 Plan and Inducement Plan [Member] Represents the 2015 Plan, 2017 Plan and Inducement Plan. us-gaap_AssetsCurrent Total current assets Options exercisable, weighted average remaining life (Year) Cash and Cash equivalents Share-Based Payment Arrangement [Policy Text Block] Employee Stock Purchase Plan Award [Member] Represents award under ESPP. Options exercisable, number of shares (in shares) Options balances, weighted average remaining life (Year) Interest income, net Warrant issuance costs in accounts payable Amount of warrant issuance costs in accounts payable in noncash transaction. Common stock, $0.001 par value; authorized – 500,000 shares; issued and outstanding – 67,274 shares and 65,926 shares at March 31, 2025 and December 31, 2024, respectively Corporate Headquarters in Hayward, California [Member] Represents corporate headquarters located in Hayward, California. Measurement Frequency [Axis] Expansion Premises 1 [Member] Represents Expansion Premises 1. Adjustments to reconcile net loss to net cash used in operating activities: Measurement Frequency [Domain] Expansion Premises 2 [Member] Represents Expansion Premises 2. us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice Options balances, weighted average exercise price (in dollars per share) Options balances, weighted average exercise price (in dollars per share) Fair Value, Recurring [Member] Common stock, shares authorized (in shares) Options canceled, weighted average exercise price (in dollars per share) Common stock, shares issued (in shares) Options expired, weighted average exercise price (in dollars per share) us-gaap_LesseeOperatingLeaseDiscountRate Lessee, Operating Lease, Discount Rate Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share (in dollars per share) Options granted, weighted average exercise price (in dollars per share) Options exercised, weighted average exercise price (in dollars per share) plse_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour Thereafter Amount of lessee's undiscounted obligation for lease payment for operating lease due after fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). Schedule of Information Related to Right-of-use Assets and Lease Liabilities [Table Text Block] Tabular disclosure for all information related to right-of-use assets and lease liabilities. Accrued expenses Total accrued expenses Compensation expense Statistical Measurement [Domain] Legal settlement Cash paid for operating lease liabilities us-gaap_OperatingLeasePayments Maximum [Member] Supplemental disclosure of noncash investing and financing activities: Minimum [Member] Accounts payable us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber Options balances, number of shares (in shares) Options balances, number of shares (in shares) Statistical Measurement [Axis] us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod Options expired, number of shares (in shares) us-gaap_CapitalExpendituresIncurredButNotYetPaid Equipment purchases included in accounts payable Preferred stock, $0.001 par value; authorized – 50,000 shares; no shares issued and outstanding Other us-gaap_OtherAccruedLiabilitiesCurrent Preferred stock, shares issued (in shares) us-gaap_PolicyTextBlockAbstract Accounting Policies Property, Plant and Equipment [Table Text Block] Preferred stock, shares authorized (in shares) Inventory us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares) Professional fees Preferred stock, par value (in dollars per share) Fair Value, Inputs, Level 3 [Member] us-gaap_PaymentsToAcquirePropertyPlantAndEquipment Purchases of property and equipment us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares) Fair Value Hierarchy and NAV [Domain] us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year) us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares) Fair Value, Inputs, Level 1 [Member] Fair Value, Inputs, Level 2 [Member] us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1 Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage Fair Value Hierarchy and NAV [Axis] Goodwill Disclosure [Text Block] Current liabilities: Supplemental Balance Sheet Disclosures [Text Block] Vesting [Axis] Cross platform research and engineering plse_CrossPlatformResearchAndEngineering The amount of cross platform research and engineering revenue. Vesting [Domain] Lease liabilities Share-Based Payment Arrangement, Tranche One [Member] Clinical and regulatory plse_ClinicalAndRegulatory The amount of clinical and regulatory revenue. us-gaap_Assets Total assets Software and Software Development Costs [Member] Plan Name [Axis] Plan Name [Domain] Construction in Progress [Member] us-gaap_OperatingLeaseExpense Operating Lease, Expense Cash flows from operating activities: Schedule of Segment Reporting Information, by Segment [Table Text Block] Statement [Line Items] us-gaap_NumberOfOperatingSegments Number of Operating Segments Furniture and Fixtures [Member] us-gaap_NumberOfReportableSegments Number of Reportable Segments Revenues: Share-Based Payment Arrangement [Text Block] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets, Major Class Name [Domain] Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Additional paid-in capital AOCI Attributable to Parent [Member] Stockholders’ equity: Leasehold Improvements [Member] plse_PercentOfOfferingPurchased Percent of Offering Purchased The percent of an offering purchased. Total other income, net us-gaap_NonoperatingIncomeExpense Total other income Long-Lived Tangible Asset [Axis] Segment Reporting Disclosure [Text Block] Long-Lived Tangible Asset [Domain] Award Type [Domain] Current assets: Fair Value Disclosures [Text Block] Award Type [Axis] Net loss Net loss Net loss us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization Less: Accumulated amortization Intangible assets, net Total us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations Cash and cash equivalents at beginning of period Cash and cash equivalents at end of period Inventory, Policy [Policy Text Block] us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect Net increase (decrease) in cash and cash equivalents Acquired patents and licenses us-gaap_NetCashProvidedByUsedInFinancingActivities Net cash provided by financing activities us-gaap_Liabilities Total liabilities Commitments and contingencies (Note 7) Sale of Stock [Axis] Sale of Stock [Domain] us-gaap_OperatingIncomeLoss Loss from operations Share-Based Payment Arrangement, Option [Member] Other income: us-gaap_NetCashProvidedByUsedInOperatingActivities Net cash used in operating activities us-gaap_NetCashProvidedByUsedInInvestingActivities Net cash used in investing activities Warrant [Member] Prepaid expenses and other current assets Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Antidilutive Securities [Axis] Antidilutive Securities, Name [Domain] Consolidation Items [Domain] us-gaap_InventoryWriteDown Inventory Write-down Commitments and Contingencies Disclosure [Text Block] us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment Less: Accumulated depreciation and amortization Property and equipment, net Total property and equipment, net Goodwill Goodwill, Ending Balance Consolidation Items [Axis] Property and equipment, gross Performance-based and Market-based Options [Member] Represents performance-based and market-based options. Manufacturing us-gaap_ManufacturingCosts us-gaap_CostsAndExpenses Total cost and expenses us-gaap_ProceedsFromIssuanceOrSaleOfEquity Proceeds from Issuance or Sale of Equity Cost and expenses: Cash flows from investing activities: Proceeds from issuance of common stock under employee stock purchase plan Proceeds from exercises of warrants Proceeds from Warrant Exercises Net loss per share: Retained Earnings [Member] Total revenues Total revenues Proceeds from exercises of stock options Additional Paid-in Capital [Member] Common Stock [Member] Related Party Transactions Disclosure [Text Block] Income tax benefit us-gaap_IncreaseDecreaseInAccruedLiabilities Accrued expenses Equity Components [Axis] Equity Component [Domain] us-gaap_IncreaseDecreaseInAccountsPayable Accounts payable us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1 Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) Class of Warrant or Right [Axis] Class of Warrant or Right [Domain] us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByEachWarrantOrRight Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares) us-gaap_ClassOfWarrantOrRightOutstanding Class of Warrant or Right, Outstanding (in shares) us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest Loss from operations, before income taxes us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) Adjusted general and administrative General and administrative Cash and cash equivalents Total stock-based compensation expense Share-Based Payment Arrangement, Expense Document Quarterly Report Amendment Flag Entity Incorporation, State or Country Code General and Administrative Expense [Member] Accounting Policies [Abstract] Significant Accounting Policies [Text Block] us-gaap_ComprehensiveIncomeNetOfTax Comprehensive loss Document Transition Report City Area Code Basis of Accounting, Policy [Policy Text Block] Use of Estimates, Policy [Policy Text Block] New Accounting Pronouncements, Policy [Policy Text Block] Entity Interactive Data Current us-gaap_SharesOutstanding Balance (in shares) Balance (in shares) Security Exchange Name Common stock, shares outstanding (in shares) Preferred stock, shares outstanding (in shares) Title of 12(b) Security Current Fiscal Year End Date us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets Prepaid expenses and other current assets Research and Development Expense [Member] Weighted-average discount rate Document Fiscal Period Focus Document Fiscal Year Focus Consolidation, Policy [Policy Text Block] Document Period End Date Statement of Income Location, Balance [Axis] Statement of Income Location, Balance [Domain] Weighted-average remaining lease term (Year) Entity File Number Entity Emerging Growth Company Document Type Entity Small Business Entity Shell Company Document Information [Line Items] Document Information [Table] plse_RightOfferingDeemedDividend Right Offering Deemed Dividend The amount of right offering deemed dividends us-gaap_AreaOfRealEstateProperty Area of Real Estate Property (Square Foot) Entity Filer Category Entity Current Reporting Status Name of Property [Axis] Name of Property [Domain] plse_EquityOfferingUnitsOfferingValue Equity Offering Units, Offering Value The total cost of the Equity offering of warrants and rights. The 2024 Right Offering [Member] us-gaap_IncreaseDecreaseInOtherReceivables Other receivables plse_EquityClassifiedSubscriptionValue Equity Classified Subscription, Value The value of Equity classified subscriptions. us-gaap_SharePrice Share Price (in dollars per share) us-gaap_GoodwillImpairmentLoss Goodwill, Impairment Loss Antidilutive securities (in shares) Stock-based compensation expense Entity Tax Identification Number Entity Central Index Key Entity Registrant Name Entity [Domain] Market-based Options [Member] Represents market-based options. Legal Entity [Axis] Performance-based Options [Member] Represents performance based options. Statement [Table] Entity Address, Address Line One Statement of Financial Position [Abstract] Issuance cost Time-based and Performance Options [Member] Represents time-based and performance options. Weighted average shares used to compute net loss per common share — basic and diluted (in shares) Amortization of intangible assets Entity Address, City or Town ecd_Rule10b51ArrTrmntdFlag Rule 10b5-1 Arrangement Terminated [Flag] ecd_Rule10b51ArrAdoptedFlag Rule 10b5-1 Arrangement Adopted [Flag] Entity Address, Postal Zip Code Business Combination [Axis] Basic and diluted net loss per share (in dollars per share) Entity Address, State or Province Business Combination [Domain] ecd_NonRule10b51ArrAdoptedFlag Non-Rule 10b5-1 Arrangement Adopted [Flag] Business Combination, Series of Individually Immaterial Business Combinations [Member] Material Terms of Trading Arrangement [Text Block] Statement of Cash Flows [Abstract] Entity Common Stock, Shares Outstanding Trading Arrangements, by Individual [Table] Statement of Stockholders' Equity [Abstract] Lease Contractual Term [Domain] Lease Contractual Term [Axis] Income Statement [Abstract] Schedule of Accrued Liabilities [Table Text Block] us-gaap_IncreaseDecreaseInOtherNoncurrentAssets Other long-term assets Warrants Issued in 2024 Rights Offering [Member] Represents the Warrants Issued in 2024 Rights Offering us-gaap_IncreaseDecreaseInInventories Inventory Trading Symbol Severance Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Issuance of common stock under employee stock purchase plan (in shares) Stock Issued During Period, Shares, Employee Stock Purchase Plans (in shares) Local Phone Number Vesting of First Half [Member] Represents vesting of first half. Issuance of common stock upon exercise of stock options (in shares) Options exercised, number of shares (in shares) us-gaap_TableTextBlock Notes Tables plse_ClassOfWarrantOrRightVestingStockPriceTrigger Class of Warrant or Right, Vesting, Stock Price Trigger (in dollars per share) Per share or per unit stock price trigger for vesting of warrants or rights. Vesting of Second Half [Member] Represents vesting of second half. Issuance of common stock under employee stock purchase plan Issuance of common stock upon exercise of stock options Related and Nonrelated Parties [Axis] Related and Nonrelated Parties [Domain] Fair Value, Assets Measured on Recurring Basis [Table Text Block] Options granted, number of shares (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) Cash flows from financing activities: us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod Options canceled, number of shares (in shares) us-gaap_WarrantsAndRightsOutstandingTerm Warrants and Rights Outstanding, Term (Year) Sales and marketing us-gaap_SellingAndMarketingExpense plse_LesseeOperatingLeaseMonthlyRent Lessee, Operating Lease, Monthly Rent Amount of monthly rent on operating lease of the lessee. Miami Lease [Member] Represents Miami Lease. us-gaap_StockIssuedDuringPeriodSharesNewIssues Stock Issued During Period, Shares, New Issues (in shares) Other segment items us-gaap_SegmentReportingOtherItemAmount us-gaap_LiabilitiesAndStockholdersEquity Total liabilities and stockholders’ equity plse_LesseeOperatingLeaseRentAnnualIncreasePercentage Lessee, Operating Lease, Rent, Annual Increase Percentage Percentage of annual increase in rent of operating lease of the lessee. Research and development Accumulated deficit plse_SubscriptionRightNumberOfUnits Subscription Right, Number of Units The number of units per subscription right. Accumulated other comprehensive income (loss) Majority Stockholder and Co-chairman [Member] Represents the majority stockholder and Co-Chairman. Money Market Funds [Member] Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Domain] Issuance of common stock pursuant to warrant exercise Value of stock issued during the period for the exercise of warrants. Changes in operating assets and liabilities: us-gaap_StockholdersEquity Total stockholders’ equity Balance Balance us-gaap_DisclosureTextBlockAbstract Notes to Financial Statements plse_IncreaseDecreaseInOperatingLeaseRightOfUseAsset Right-of-use assets Amount of increase (decrease) in operating lease right of use asset. Non-current operating lease liabilities Lease liability, less current portion Issuance of common stock pursuant to warrant exercise (in shares) Number of shares issued during the period for the exercise of warrants. Class of Stock [Axis] Total lease liabilities us-gaap_OperatingLeaseLiability Operating Lease, Liability plse_NumberOfWarrantsInEachUnit Number of Warrants in Each Unit (in shares) Represents number of warrants in each unit. Current operating lease liabilities Lease liability, current plse_EquityOfferingUnitsMaximumAmountAuthorized Equity Offering, Units, Maximum Amount Authorized (in shares) Maximum amount authorized for units issued under equity offering. Options exercisable, weighted average exercise price (in dollars per share) Operating Segments [Member] Right-of-use assets Operating Lease, Right-of-Use Asset Laboratory Equipment [Member] Represents laboratory equipment. us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue Total lease payments Acquired Patents and Licenses [Member] Represents acquired patents and licenses. us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount Less imputed interest plse_ClassOfWarransOrRightExercisePricePercentageOfSubscriptionPriceForUnits Class of Warrans or Right, Exercise Price, Percentage of Subscription Price for Units Amount of exercise price of warrants as percentage of subscription price for units. us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree 2028 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear 2025 (remaining 9 months) us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour 2029