Document And Entity Information
Dividend yield
Note To Financial Statement Details Textual
Significant Accounting Policies
Note 2 - Summary of Significant Accounting Policies
Note 3 - Investments and Fair Value of Financial Instruments
Risk-free interest rate
Note 4 - Balance Sheet Components
Note 6 - Stockholders' Equity and Stock-based Compensation
Note 10 - Segment Reporting
Note 11 - Income Taxes
Note 13 - Commitments and Contingencies
Category of Item Purchased [Axis]
Note 2 - Summary of Significant Accounting Policies - Warrant Accrual Activity (Details)
Long-Term Purchase Commitment, Category of Item Purchased [Domain]
Income Tax Disclosure [Text Block]
Note 2 - Summary of Significant Accounting Policies - Antidilutive Securities (Details)
Unrealized gain (loss) on available-for-sale securities
Note 3 - Investments and Fair Value of Financial Instruments - Financial Assets Measured on a Recurring Basis (Details)
Note 4 - Balance Sheet Components - Inventory (Details)
Expected volatility
Note 4 - Balance Sheet Components - Property and Equipment, Net (Details)
Note 4 - Balance Sheet Components - Intangible Assets, Net (Details)
us-gaap_LiabilitiesCurrent
Total current liabilities
Note 4 - Balance Sheet Components - Schedule of Amortization of Intangible Assets (Details)
Note 4 - Balance Sheet Components - Accrued Expenses (Details)
Note 6 - Stockholders' Equity and Stock-based Compensation - Summary of Warrants Activity (Details)
Expected term in years (Year)
Note 6 - Stockholders' Equity and Stock-based Compensation - Summary of Stock Option Activity (Details)
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_BusinessCombinationConsiderationTransferred1
Business Combination, Consideration Transferred, Total
Note 6 - Stockholders' Equity and Stock-based Compensation - Option Assumptions (Details)
Note 6 - Stockholders' Equity and Stock-based Compensation - ESPP Assumptions (Details)
Note 6 - Stockholders' Equity and Stock-based Compensation - Stock-based Compensation Expense by Recorded Location (Details)
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
Note 6 - Stockholders' Equity and Stock-based Compensation - Stock-based Compensation Expense by Type (Details)
Note 10 - Segment Reporting - Revenue by Product (Details)
Note 10 - Segment Reporting - Revenue by Geography (Details)
Note 11 - Income Taxes - Income (Loss) Before Income Taxes (Details)
Note 11 - Income Taxes - Components of Provision for Income Taxes (Details)
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
Note 11 - Income Taxes - Reconciliation of Provision for Income Taxes (Details)
us-gaap_NumberOfBusinessesAcquired
Number of Businesses Acquired
Note 11 - Income Taxes - Deferred Tax Asset (Liability) (Details)
Note 11 - Income Taxes - Reconciliation of Unrecognized Tax Benefit (Details)
Note 13 - Commitments and Contingencies - Information Related to Right-of-use Assets and Lease Liabilities (Details)
Notes To Financial Statements
Notes To Financial Statements [Abstract]
Sales of investments
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)
Maturities of investments
Share-Based Payment Arrangement, Cost by Plan [Table Text Block]
Other comprehensive gain (loss):
Options exercisable, weighted average remaining life (Year)
Note payable, current
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value
Options exercisable, number of shares (in shares)
Options balances, weighted average remaining life (Year)
us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt
Purchases of investments
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Options balances, weighted average exercise price (in dollars per share)
Options balances, weighted average exercise price (in dollars per share)
Options canceled, weighted average exercise price (in dollars per share)
Options expired, weighted average exercise price (in dollars per share)
Deferred revenue
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNonOptionEquityInstrumentsOutstandingNumber
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Outstanding, Number, Ending Balance (in shares)
Options granted, weighted average exercise price (in dollars per share)
Options exercised, weighted average exercise price (in dollars per share)
Accrued expenses
Accrued Liabilities, Current, Total
Compensation expense
Accounts payable
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Options balances, number of shares (in shares)
Options balances, number of shares (in shares)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod
Options expired, number of shares (in shares)
Equipment purchases included in accounts payable and accrued expenses
Equipment purchases included in accounts payable and accrued expenses
Other
us-gaap_OtherAccruedLiabilitiesCurrent
us-gaap_PolicyTextBlockAbstract
Accounting Policies
us-gaap_DebtSecuritiesAvailableForSaleGainLoss
Gain on U.S. Treasury securities
Change in unrealized gains on available-for-sale securities
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)
Accrued interest settled via issuance of common stock from private placement equity offering
Professional fees
Director and officer liability insurance (Note 12)
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)
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)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)
Grantee Status [Domain]
Grantee Status [Axis]
us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage
Goodwill Disclosure [Text Block]
Current liabilities:
Supplemental Balance Sheet Disclosures [Text Block]
Vesting [Axis]
Vesting [Domain]
Lease liabilities
Share-Based Payment Arrangement, Tranche One [Member]
Product [Member]
Share-Based Payment Arrangement, Tranche Two [Member]
us-gaap_Assets
Total assets
Plan Name [Axis]
Plan Name [Domain]
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total
us-gaap_OperatingLeaseExpense
Operating Lease, Expense
us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)
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]
Award Type [Domain]
Award Date [Axis]
Award Date [Domain]
Award Type [Axis]
Net loss
Net loss
us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Less: Accumulated amortization
Intangible assets, net
Finite-Lived Intangible Assets, Net, Ending Balance
Restricted Stock Units (RSUs) [Member]
Acquired patents and licenses
Share-Based Payment Arrangement, Option [Member]
Warrant [Member]
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
Antidilutive Securities [Axis]
Antidilutive Securities, Name [Domain]
Commitments and Contingencies Disclosure [Text Block]
us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Less: Accumulated depreciation and amortization
Property and equipment, net
Property and equipment, net
Goodwill
Goodwill, Ending Balance
Property and equipment, gross
Cash flows from investing activities:
Net loss per share:
us-gaap_RelatedPartyTransactionAmountsOfTransaction
Related Party Transaction, Amounts of Transaction
Accrued interest on note payable
Related Party Transactions Disclosure [Text Block]
us-gaap_IncomeTaxExpenseBenefit
Income tax benefit
us-gaap_IncreaseDecreaseInAccruedLiabilities
Accrued expenses
us-gaap_IncreaseDecreaseInAccountsPayable
Accounts payable
us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount
Defined Contribution Plan, Employer Discretionary Contribution Amount
General and administrative
us-gaap_DebtInstrumentIncreaseAccruedInterest
Debt Instrument, Increase, Accrued Interest
Accrued interest on related party note payable
Cash and cash equivalents
Total stock-based compensation expense
Share-Based Payment Arrangement, Expense
Amendment Flag
us-gaap_ComprehensiveIncomeNetOfTax
Comprehensive loss
City Area Code
Use of Estimates, Policy [Policy Text Block]
New Accounting Pronouncements, Policy [Policy Text Block]
us-gaap_GainLossOnSaleOfPropertyPlantEquipment
Loss on disposal of fixed assets
us-gaap_IncreaseDecreaseInContractWithCustomerLiability
Deferred revenue
us-gaap_SharesOutstanding
Balance (in shares)
Balance (in shares)
Common stock, shares outstanding (in shares)
Preferred stock, shares outstanding (in shares)
Preferred Stock, Shares Outstanding, Ending Balance (in shares)
Current Fiscal Year End Date
us-gaap_DebtInstrumentInterestRateStatedPercentage
Debt Instrument, Interest Rate, Stated Percentage
us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Prepaid expenses and other current assets
Weighted-average discount rate
Document Fiscal Period Focus
Document Fiscal Year Focus
Consolidation, Policy [Policy Text Block]
Document Period End Date
Weighted-average remaining lease term (Year)
Entity File Number
Entity Emerging Growth Company
us-gaap_DebtInstrumentFaceAmount
Debt Instrument, Face Amount
Document Type
Entity Small Business
Entity Shell Company
Document Information [Line Items]
Document Information [Table]
us-gaap_InvestmentOwnedPercentOfNetAssets
Investment Owned, Percent of Net Assets
us-gaap_AreaOfRealEstateProperty
Area of Real Estate Property (Acre)
Entity Public Float
Entity Filer Category
Debt Instrument [Axis]
Entity Current Reporting Status
Debt Instrument, Name [Domain]
us-gaap_RestructuringCharges
Restructuring Charges, Total
Entity Voluntary Filers
Entity Well-known Seasoned Issuer
us-gaap_IncreaseDecreaseInOtherReceivables
Other receivables
us-gaap_ImpairmentOfLongLivedAssetsHeldForUse
Impairment, Long-Lived Asset, Held-for-Use, Total
us-gaap_GoodwillImpairmentLoss
Goodwill, Impairment Loss
us-gaap_ConcentrationRiskPercentage1
Concentration Risk, Percentage
us-gaap_IncreaseDecreaseInAccountsReceivable
Accounts receivable
Stock-based compensation expense
Quarterly Financial Information [Text Block]
Entity Tax Identification Number
Entity Central Index Key
Entity Registrant Name
Entity [Domain]
Legal Entity [Axis]
Entity Address, Address Line One
Issuance cost
Amortization of intangible assets
Less: Adjustment for inventory at cost and excessive and obsolete inventory
Represents the adjustment for inventory at cost.
Entity Address, City or Town
Geographic Concentration Risk [Member]
Entity Address, Postal Zip Code
Entity Address, State or Province
Concentration Risk Type [Axis]
Concentration Risk Type [Domain]
Entity Common Stock, Shares Outstanding
Sales and marketing
us-gaap_IncreaseDecreaseInOtherNoncurrentAssets
Other long-term assets
plse_EquityOfferingUnitsSaleOfUnits
Equity Offering, Units, Sale of Units (in shares)
Total units issued during the year.
us-gaap_IncreaseDecreaseInInventories
Inventory
Trading Symbol
Assets, Total [Member]
Concentration Risk Benchmark [Axis]
plse_DebtInstrumentQuarterlyInterestRate
Debt Instrument Quarterly Interest Rate
Debt instrument, quarterly interest rate
Concentration Risk Benchmark [Domain]
Robert W. Duggan [Member]
Represents Robert W. Duggan
Two Thousand Twenty Two Loan Agreement [Member]
Represents the 2022 Loan Agreement
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
Issuance of common stock as part of debt extinguishment and private investment, net of issuance cost of $106
Issuance of common stock as part of debt extinguishment and private investment, net of issuance cost of $106 (in shares)
Issuance of shares under employee stock purchase plan (in shares)
Stock Issued During Period, Shares, Employee Stock Purchase Plans (in shares)
plse_ClassOfWarrantOrRightUnexercisedAndExpired
Class of Warrant or Right, Unexercised and Expired (in shares)
The number of warrants or rights which expired during the period unexercised.
Local Phone Number
R&D Capitalization
Amount before allocation of valuation allowances of deferred tax asset attributable to capitalized research and development.
Issuance of common stock upon exercise of stock options (in shares)
Options exercised, number of shares (in shares)
us-gaap_TableTextBlock
Notes Tables
Issuance of shares under employee stock purchase plan
Issuance of common stock upon vesting of restricted stock units, net of shares withheld for employee taxes (in shares)
Issuance of common stock upon exercise of stock options
Issuance of common stock upon vesting of restricted stock units, net of shares withheld for employee taxes
Related Party [Axis]
Related Party [Domain]
Total Cost and Expenses [Member]
Primary financial statement caption encompassing cost and expenses.
Options granted, number of shares (in shares)
us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresInPeriod
Options canceled, number of shares (in shares)
us-gaap_WarrantsAndRightsOutstandingTerm
Warrants and Rights Outstanding, Term (Year)
Issuance of common stock, shares (in shares)
Stock Issued During Period, Shares, New Issues (in shares)
Raw materials
us-gaap_LiabilitiesAndStockholdersEquity
Total liabilities and stockholders’ equity
Finished goods
Work in process
UNITED STATES
Issuance of common stock
Stock Issued During Period, Value, New Issues
Related Party Transaction [Axis]
Related Party Transaction [Domain]
Research and development
Research and Development Expense, Total
Accumulated deficit
Accumulated other comprehensive income (loss)
Money Market Funds [Member]
Cash and Cash Equivalents [Axis]
us-gaap_InterestExpense
Interest Expense, Total
March 2022 Restructuring Plan [Member]
Represents March 2022 restructuring plan.
Cash and Cash Equivalents [Domain]
plse_AdditionalProceedsThatMayBeReceivedUponExerciseOfWarrants
Additional Proceeds That May be Received Upon Exercise of Warrants
Amount of additional proceeds that may be received upon exercise of warrants.
Issuance of shares upon exercise of warrants
Value of stock issued during the period for the exercise of warrants.
Changes in operating assets and liabilities:
Rights Offering [Member]
Represents rights offering.
us-gaap_DisclosureTextBlockAbstract
Notes to Financial Statements
ATM Offering [Member]
Represents the ATM offering.
plse_IncreaseDecreaseInOperatingLeaseRightOfUseAsset
Increase (Decrease) in Operating Lease Right of Use Asset
Right-of-use assets
Amount of increase (decrease) in operating lease right of use asset.
Issuance of shares upon exercise of warrants (in shares)
Stock Issued During Period, Shares, Exercise of Warrants (in shares)
Number of shares issued during the period for the exercise of warrants.
Subsequent Event [Member]
Non-current operating lease liabilities
Lease liability, less current portion
Offering price per unit (in dollars per share)
Per unit or per share price of units issued during the period.
September 2022 Restructuring Plan [Member]
Represents the September 2022 restructuring plan.
Schedule of Inventory, Current [Table Text Block]
Total lease liabilities
us-gaap_OperatingLeaseLiability
Operating Lease, Liability, Total
plse_FairValueLevel12And3TransfersAmount
Fair Value, Level 1, 2 and 3 Transfers, Amount
Amount of transfers between levels 1, 2, and 3 of the fair value hierarchy.
Subsequent Event Type [Axis]
Current operating lease liabilities
Lease liability, current
plse_ImpairmentOfMarketableSecurities
Impairment of Marketable Securities
Amount of impairment of marketable securities.
Subsequent Event Type [Domain]
Other receivable from exercise of warrants and stock options
Increase in other receivable from exercise of warrants and tock options in noncash transaction.
Retirement Benefits [Text Block]
Patent Costs [Policy Text Block]
Disclosure of accounting policy for patent costs.
plse_PatentCosts
Patent Costs
Amount of patent costs not related to acquired patents, including patent-related legal fees, filing fees and other costs, including internally generated costs, that are expensed as incurred.
Right-of-use assets
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
us-gaap_DeferredIncomeTaxExpenseBenefit
Total deferred
Controlled launch (Note 8)
Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to controlled launch. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree
2025
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour
2026
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFive
2027
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive
Thereafter
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
2024
Fair Value of Financial Instruments, Policy [Policy Text Block]
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
2025
Conversion of Loan Agreement into Common Stock [Member]
Represents the conversion of the Loan Agreement into common stock.
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
2026
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
2023
Loan Agreement [Member]
Represents the loan agreement.
us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo
2024
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).
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]
Segment Reporting, Policy [Policy Text Block]
us-gaap_PaymentsForRestructuring
Payments for Restructuring
us-gaap_DebtConversionConvertedInstrumentRate
Debt Conversion, Converted Instrument, Rate
us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
2023
plse_EquityOfferingMaximumOfferingAmount
Equity Offering, Maximum Offering Amount
Maximum value of company's equity authorized for issuance under equity offering.
plse_NumberOfSharesPerUnitIssued
Number of Shares Per Unit Issued (in shares)
Number of shares of stock issued or issuable for each unit.
plse_NumberOfWarrantsPerUnit
Number of Warrants Per Unit (in shares)
Number of warrants issued or issuable for each unit.
Share-Based Payment Arrangement, Employee [Member]
us-gaap_ShareBasedCompensation
Stock-based compensation
Other assets
plse_ClassOfWarrantOrRightExerciseConsecutiveTradingDays
Class of Warrant or Right, Exercise, Consecutive Trading Days (Year)
The consecutive trading days for exercise of warrant or right.
plse_ClassOfWarrantOrRightExercisedDuringPeriod
Class of Warrant or Right, Exercised During Period (in shares)
Warrants exercised, number of shares (in shares)
The number of warrants or rights exercised during period.
us-gaap_FiniteLivedIntangibleAssetUsefulLife
Finite-Lived Intangible Asset, Useful Life (Year)
Private Placement Warrants [Member]
Represents the Private Placement Warrants.
IPO Warrants [Member]
Represents IPO Warrants.
Earnings Per Share, Policy [Policy Text Block]
Rights Offering Warrants [Member]
Represents Rights Offering Warrants.
plse_PeriodOfTimeWarrantsAreNotAbleToBeRedeemed
Period of Time Warrants Are Not Able to Be Redeemed (Month)
The period of time after issuance that warrants are not bale to be redeemed.
us-gaap_DebtConversionOriginalDebtAmount1
Debt Conversion, Original Debt, Amount
plse_ClassOfWarrantOrRightPeriodOfWrittenNoticeForExercise
Class of Warrant or Right, Period of Written Notice for Exercise (Year)
The period of written notice for warrants or rights to be exercised.
plse_ClassOfWarrantOrRightPercentageRequiredForRedemption
Class of Warrant or Right, Percentage Required for Redemption
The percentage required for redemption of warrant or right.
Debt Conversion Description [Axis]
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.
Debt Conversion, Name [Domain]
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.
The 2017 Inducement Equity Incentive Plan [Member]
Represents the 2017 Inducement Equity Incentive Plan.
Comprehensive Income, Policy [Policy Text Block]
Income Tax, Policy [Policy Text Block]
Total assets measured at fair value
Assets, Fair Value Disclosure, Total
Total assets measured at fair value
plse_ClassOfWarrantsOrRightsRedemptionPricePerShare
Class of Warrants or Rights, Redemption Price Per Share (in dollars per share)
Per share redemption price of warrants or rights.
The 2017 Plan [Member]
Represents the 2017 plan.
The 2017 Employee Stock Purchase Plan [Member]
Represents the 2017 Employee Stock Purchase Plan.
Granted in 2017 [Member]
Represents granted in 2017.
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)
Performance Options [Member]
Represents performance options.
Research and Development Expense, Policy [Policy Text Block]
Warrants issued, weighted average exercise price (in dollars per share)
Exercise price per share of warrants or rights issued during period.
Depreciation
Depreciation, Total
Warrants exercised (in dollars per share)
Exercise price per share of warrants or rights exercised during period.
Warrants Expired/Redeemed, weighted average exercise price (in dollars per share)
Exercise price per share of warrants or rights expired/redeemed during period.
us-gaap_LiabilitiesFairValueDisclosure
Liabilities, Fair Value Disclosure, Total
Warrants outstanding, weighted average remaining contractual life (Year)
Weighted average remaining contractual term of warrants or rights.
plse_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriodUponResignation
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period Upon Resignation (Day)
Period from resignation date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.
Former Director [Member]
Represents former director.
plse_ClassOfWarrantOrRightIssuedDuringPeriod
Warrants issued, number of shares (in shares)
The number of warrants or rights issued during period.
plse_ClassOfWarrantOrRightExpiredredeemedDuringPeriod
Warrants Expired/Redeemed, number of shares (in shares)
The number of warrants or rights expired/redeemed during period.
Old Dominion University Research Foundation [Member]
Represents Old Dominion University Research Foundation.
us-gaap_SharesIssuedPricePerShare
Shares Issued, Price Per Share (in dollars per share)
Sponsored Research Agreement SRA [Member]
Represents sponsored research agreement (SRA).
Controlled Launch [Text Block]
The entire disclosure for controlled launch.
plse_NumberOfKOLs
Number of KOLs
The number of KOLs.
The 2015 Plan, 2017 Plan and Inducement Plan [Member]
Represents the 2015 Plan, 2017 Plan and Inducement Plan.
us-gaap_AssetsCurrent
Total current assets
Cash and Cash equivalents
Share-Based Payment Arrangement [Policy Text Block]
Employee Stock Purchase Plan Award [Member]
Represents award under ESPP.
Redemption of Non Cash Credits [Member]
Represents redemption of non cash credits.
Cycle Units Products [Member]
Represents cycle units products.
System Products [Member]
Represents system products.
Rest of World [Member]
Represents rest of world.
plse_NumberOfPatientsParticipatingInProcedure
Number of Patients Participating in Procedure
The number of patients participating in procedure.
plse_ControlledLaunchProgramExpenses
Controlled Launch, Program Expenses
Amount of program expenses related to controlled launch.
plse_DirectorsAndOfficersLiabilityInsurancePeriod
Directors and Officers Liability Insurance, Period (Year)
Period of liability insurance for directors and officers.
Fair Value, Nonrecurring [Member]
plse_OperatingLossCarryforwardsNotSubjectToExpiration
Operating Loss Carryforwards, Not Subject to Expiration
Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws that are not subject to expiration.
Interest income (expense), net
plse_IncomeTaxExpenseBenefitComponentOfOperatingExpense
Total provision for income taxes
Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations included as a component of operating expense..
Common stock, $0.001 par value; authorized – 500,000 shares; issued and outstanding – 37,235 shares and 29,716 shares at December 31, 2022 and 2021, respectively
Lease liability under ASC 842
Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences from lease liability.
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.
Common stock, shares authorized (in shares)
Common Stock, Shares Authorized (in shares)
Letter Agreement [Member]
Represents Letter Agreement.
Common stock, shares issued (in shares)
plse_DirectorAndOfficerInsurancePremiumPayable
Director and Officer Insurance Premium Payable
Amount of payable for director and officer insurance premium.
Insurance Loan Agreement [Member]
Represents Insurance Loan Agreement.
Common stock, par value (in dollars per share)
Common Stock, Par or Stated Value Per Share (in dollars per share)
us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount
Revenue from Contract with Customer [Policy Text Block]
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.
Standard Product Warranty, Policy [Policy Text Block]
Modified Performance Options [Member]
Represents modified performance options.
Deferred adjustment
Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to deferred adjustments.
us-gaap_DeferredTaxAssetsValuationAllowance
Valuation allowance
Statistical Measurement [Domain]
Cash paid for operating lease liabilities
us-gaap_OperatingLeasePayments
Maximum [Member]
Supplemental disclosure of noncash investing and financing activities:
Minimum [Member]
Product and Service [Axis]
Product and Service [Domain]
us-gaap_DeferredTaxAssetsNet
Total deferred tax assets
Statistical Measurement [Axis]
Preferred stock, $0.001 par value; authorized – 50,000 shares; no shares issued and outstanding
us-gaap_DeferredTaxAssetsLiabilitiesNet
Net deferred tax assets/(liabilities)
Preferred stock, shares issued (in shares)
Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block]
North America [Member]
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]
Geographical [Axis]
Geographical [Domain]
Property, Plant and Equipment [Table Text Block]
us-gaap_DeferredTaxAssetsGross
Gross deferred tax assets
Preferred stock, shares authorized (in shares)
Preferred Stock, Shares Authorized (in shares)
Goodwill and Intangible Assets, Goodwill, Policy [Policy Text Block]
us-gaap_DeferredIncomeTaxLiabilities
Total deferred tax liabilities
Inventory
Total inventory
Preferred stock, par value (in dollars per share)
Preferred Stock, Par or Stated Value Per Share (in dollars per share)
Fair Value, Inputs, Level 3 [Member]
Fair Value Hierarchy and NAV [Domain]
Fair Value, Inputs, Level 1 [Member]
Fair Value, Inputs, Level 2 [Member]
Fair Value Hierarchy and NAV [Axis]
Accruals
Software and Software Development Costs [Member]
us-gaap_PropertyPlantAndEquipmentUsefulLife
Property, Plant and Equipment, Useful Life (Year)
Construction in Progress [Member]
Cash flows from operating activities:
Statement [Line Items]
Warranty
us-gaap_StandardProductWarrantyAccrualCurrent
Beginning balance
Ending balance
us-gaap_NumberOfOperatingSegments
Number of Operating Segments
Furniture and Fixtures [Member]
Accounts receivable
us-gaap_NumberOfReportableSegments
Number of Reportable Segments
Stock-based compensation
Revenues:
Add: Accruals for warranties issued during the period
Additional paid-in capital
AOCI Attributable to Parent [Member]
Schedule of Product Warranty Liability [Table Text Block]
Stockholders’ equity:
Leasehold Improvements [Member]
Property, Plant and Equipment, Policy [Policy Text Block]
Board of Directors Chairman [Member]
Long-Lived Tangible Asset [Axis]
us-gaap_NonoperatingIncomeExpense
Total other income (expense)
Long-Lived Tangible Asset [Domain]
Segment Reporting Disclosure [Text Block]
Net operating loss carryforwards
Chief Executive Officer [Member]
Tax credit carryforwards
Current assets:
Fair Value Disclosures [Text Block]
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_InvestmentIncomeNetAmortizationOfDiscountAndPremium
Net premium amortization and discount on available-for-sale securities
Private Placement [Member]
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
Net increase in cash and cash equivalents
us-gaap_NetCashProvidedByUsedInFinancingActivities
Net cash provided by financing activities
us-gaap_Liabilities
Total liabilities
Commitments and contingencies (Note 13)
Sale of Stock [Axis]
Sale of Stock [Domain]
us-gaap_OperatingIncomeLoss
Loss from operations
Other income (expense):
us-gaap_NetCashProvidedByUsedInOperatingActivities
Net cash used in operating activities
us-gaap_NetCashProvidedByUsedInInvestingActivities
Net cash provided by (used in) investing activities
Prepaid expenses and other current assets
us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets
Intangibles
Cost of revenues
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
Write-off of excessive and obsolete inventory
us-gaap_DueToRelatedPartiesCurrentAndNoncurrent
Due to Related Parties, Total
us-gaap_DeferredTaxLiabilitiesLeasingArrangements
ROU asset under ASC 842
us-gaap_InterestPayableCurrentAndNoncurrent
Interest Payable
Concentration Risk, Credit Risk, Policy [Policy Text Block]
us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation
Tax payments related to shares withheld for vested restricted stock units
us-gaap_DeferredTaxLiabilitiesPropertyPlantAndEquipment
Fixed assets
us-gaap_CostsAndExpenses
Total cost and expenses
Cost and expenses:
Proceeds from issuance of common stock under employee stock purchase plan
Proceeds from exercises of warrants
Proceeds from Warrant Exercises
Retained Earnings [Member]
Total revenues
Revenue from Contract with Customer, Excluding Assessed Tax
Proceeds from exercises of stock options
Proceeds from issuance of common stock
Proceeds from Issuance of Common Stock
Title of Individual [Domain]
us-gaap_CurrentStateAndLocalTaxExpenseBenefit
State
Title of Individual [Axis]
us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit
State
us-gaap_CurrentForeignTaxExpenseBenefit
Foreign
us-gaap_DeferredForeignIncomeTaxExpenseBenefit
Foreign
Additional Paid-in Capital [Member]
us-gaap_CurrentFederalTaxExpenseBenefit
Federal
Common Stock [Member]
us-gaap_DeferredFederalIncomeTaxExpenseBenefit
Federal
Deferred
Equity Components [Axis]
Equity Component [Domain]
Current
us-gaap_LongTermDebt
Long-Term Debt, Total
us-gaap_CurrentIncomeTaxExpenseBenefit
Total current
us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)
Warrants outstanding, weighted average exercise price (in dollars per share)
Warrants outstanding, weighted average exercise price (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_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign
Foreign
us-gaap_ClassOfWarrantOrRightOutstanding
Class of Warrant or Right, Outstanding (in shares)
Warrants outstanding, number of shares (in shares)
Warrants outstanding, number of shares (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)
us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
Domestic
ICFR Auditor Attestation Flag
State and Local Jurisdiction [Member]
Income Tax Authority [Axis]
Income Tax Authority [Domain]
Disaggregation of Revenue [Table Text Block]
Domestic Tax Authority [Member]
Equipment [Member]
Revenue from Contract with Customer [Text Block]
Document Annual Report
Cash and Cash Equivalents, Policy [Policy Text Block]
Entity Incorporation, State or Country Code
General and Administrative Expense [Member]
us-gaap_UnrecognizedTaxBenefits
Unrecognized Tax Benefits, Ending Balance
Unrecognized tax benefits at beginning of year
Unrecognized tax benefits at beginning of year
us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
Unrecognized Tax Benefits that Would Impact Effective Tax Rate
Accounting Policies [Abstract]
Significant Accounting Policies [Text Block]
Document Transition Report
Basis of Accounting, Policy [Policy Text Block]
Entity Interactive Data Current
Selling and Marketing Expense [Member]
Increases related to prior year tax positions
Security Exchange Name
Increases related to current year tax positions
Title of 12(b) Security
Proceeds from issuance of related party note
Cost of Sales [Member]
Research and Development Expense [Member]
Income Statement Location [Axis]
Income Statement Location [Domain]
Auditor Name
Auditor Firm ID
Auditor Location
Name of Property [Axis]
Name of Property [Domain]
us-gaap_TaxCreditCarryforwardAmount
Tax Credit Carryforward, Amount
Antidilutive securities (in shares)
us-gaap_OperatingLossCarryforwards
Operating Loss Carryforwards
us-gaap_OperatingLossCarryforwardsExpirationDate
Operating Loss Carryforwards, Expiration Date
Statement [Table]
Related party note payable, current
Statement of Financial Position [Abstract]
Weighted average shares used to compute net loss per common share — basic and diluted (in shares)
Other
us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments
us-gaap_EffectiveIncomeTaxRateContinuingOperations
Provision for income taxes
Business Acquisition [Axis]
Basic and diluted net loss per share (in dollars per share)
Change in tax rate
Business Acquisition, Acquiree [Domain]
Series of Individually Immaterial Business Acquisitions [Member]
Change in valuation allowance
Statement of Cash Flows [Abstract]
Statement of Stockholders' Equity [Abstract]
Lease Contractual Term [Domain]
Lease Contractual Term [Axis]
Income Statement [Abstract]
Revenue from External Customers by Geographic Areas [Table Text Block]
Uncertain Tax Position
Schedule of Accrued Liabilities [Table Text Block]
Proceeds from insurance loan agreement
us-gaap_RepaymentsOfDebt
Payments made on insurance loan agreement
Contract with Customer, Sales Channel [Axis]
Contract with Customer, Sales Channel [Domain]
Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
Restructuring Plan [Axis]
Restructuring Plan [Domain]
Type of Restructuring [Domain]
Employee Severance [Member]
Restructuring and Related Activities Disclosure [Text Block]
State tax at statutory rate
Fair Value, Assets Measured on Recurring Basis [Table Text Block]
Restructuring Type [Axis]
Research and development credits
Cash flows from financing activities:
Federal tax at statutory rate
Related party note payable, less current
us-gaap_LiabilityForUncertainTaxPositionsNoncurrent
Liability for Uncertainty in Income Taxes, Noncurrent
us-gaap_PaymentsToAcquireLifeInsurancePolicies
Payment to Acquire Life Insurance Policy, Investing Activities
Research, Development, and Computer Software Disclosure [Text Block]
Research and Development Arrangement [Member]
us-gaap_StockholdersEquity
Total stockholders’ (deficit) equity
Balance
Balance
Class of Stock [Axis]
Options exercisable, weighted average exercise price (in dollars per share)
us-gaap_LongTermPurchaseCommitmentAmount
Long-Term Purchase Commitment, Amount