v3.26.1
Debt (Tables)
12 Months Ended
Dec. 31, 2025
Debt [Abstract]  
Schedule of the Debt Instruments and their Changes

The following table sets forth a summary of the debt instruments and their changes during the years ended December 31, 2025 and 2024 (in thousands):

 

   Junior Convertible
Notes
   Loans
Payable
   Tasly Convertible
Note - Related
Party
   Convertible Promissory
Note - Related
Party
   Senior
Notes
   Promissory
Notes
   PPP
Loan
   D&O
Insurance
Financing
 
Balance at January 1, 2025  $18,419   $   $2,234   $   $25,268   $910   $1,376   $ 
Issuance of debt       11,000            1,350    100        657 
Debt repayments       (1,920)       (50)   (555)          (360)
Change in fair value       3,294    56    (242)                
Conversion of debt to equity   (19,612)   (4,497)           (27,279)            
Debt assumed in connection with reverse recapitalization               2,162                 
Accrued stated interest   1,193                1,258    39    14     
Balance at December 31, 2025  $   $7,877   $2,290   $1,870   $42   $1,049   $1,390   $297 
                                         
Less: Current portion  $   $   $2,290   $1,870   $42   $1,049   $1,390   $297 
Long term debt  $   $7,877   $   $   $   $   $   $ 
   Junior Convertible Notes   Tasly Convertible Note - Related Party   Senior Notes   Promissory Notes   PPP Loan 
Balance at January 1, 2024  $16,316   $1,714   $20,155   $849   $1,362 
Issuance of debt       16    3,210         
Debt repayments           (150)        
Change in fair value       311             
Stated interest   2,057    193    2,053    61    14 
Amortization of debt discount and issuance costs   46                 
Balance at December 31, 2024  $18,419   $2,234   $25,268   $910   $1,376 
                          
Less: Current portion   18,419    2,234    25,268    910    1,376 
Long term debt  $   $   $   $   $ 
Schedule of Accounting Basis
Accounting basis  Effective interest
method
   Fair value
option
   Fair value
option
   Fair value
option
   Effective interest
method
  Simple interest
method
   Compounding
Interest
   Simple interest
method
 
Interest rate   12%   10%   24%       0%-12%    0%-12%     1%   7%
Conversion price(s) per share  $525.00     various    $37.50        $37.50, $166.50, and $300.00            
Maturity   7/11/2025    1/11/2027    3/31/2024    7/11/2025   7/11/2025   various    5/25/2026    4/11/2026 
Schedule of Contractual Future Minimum Payments

As of December 31, 2025, the contractual future minimum payments for the Company’s outstanding borrowing arrangements were as follows (in thousands):

 

   2026   2027   Total 
Tasly convertible note - related party  $2,290   $   $2,290 
Convertible promissory note - related party   1,870        1,870 
Loans payable        7,877    7,877 
Senior notes   42        42 
Promissory notes   1,049        1,049 
PPP loan   1,390        1,390 
Total contractual obligations  $6,641   $7,877   $14,518