v3.25.4
Debt - Schedule of Changes in Debt Instruments (Details) - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Dec. 31, 2023
Convertible Notes [Member]        
Schedule of Changes in Debt Instruments [Line Items]        
Balance of beginning $ 18,419 $ 16,316 $ 16,316 $ 13,981
Less: Current portion 17,311 18,419  
Long term debt 0  
Issuance of debt
Debt repayments
Change in fair value
Stated interest 1,193 993 2,057 1,820
Amortization of debt discount and issuance costs   2 46 515
Balance of ending 0 17,311 18,419 16,316
Tasly Convertible Debt [Member]        
Schedule of Changes in Debt Instruments [Line Items]        
Balance of beginning 2,234 1,714 1,714
Less: Current portion     2,234  
Long term debt      
Issuance of debt     16 1,600
Debt repayments    
Change in fair value     311 22
Stated interest     193 92
Amortization of debt discount and issuance costs    
Balance of ending     2,234 1,714
Senior Notes [Member]        
Schedule of Changes in Debt Instruments [Line Items]        
Balance of beginning 25,268 20,155 20,155 15,149
Less: Current portion     25,268  
Long term debt      
Issuance of debt     3,210 3,235
Debt repayments     (150)
Change in fair value    
Stated interest     2,053 1,771
Amortization of debt discount and issuance costs     0
Balance of ending     25,268 20,155
Promissory Notes [Member]        
Schedule of Changes in Debt Instruments [Line Items]        
Balance of beginning 910 849 849 576
Less: Current portion 1,045 895 910  
Long term debt  
Issuance of debt 100 375
Debt repayments (151)
Change in fair value
Stated interest 35 46 61 49
Amortization of debt discount and issuance costs  
Balance of ending 1,045 895 910 849
PPP Loan [Member]        
Schedule of Changes in Debt Instruments [Line Items]        
Balance of beginning 1,376 1,362 1,362 1,326
Less: Current portion 1,386 1,372 1,376  
Long term debt  
Issuance of debt
Debt repayments
Change in fair value
Stated interest 10 10 14 36
Amortization of debt discount and issuance costs  
Balance of ending $ 1,386 $ 1,372 $ 1,376 $ 1,362