v3.25.4
Segments - Schedule of Other Financial Information Regarding The Company’s Operating Segment (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2025
Jun. 30, 2025
Mar. 31, 2025
Sep. 30, 2024
Jun. 30, 2024
Mar. 31, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Dec. 31, 2023
Schedule Of Other Financial Information Regarding The Company SOperating Segment Abstract                    
Government grant revenue     $ 75     $ 100 $ 100 $ 45
Operating expenses:                    
Research personnel compensation costs, including stock-based compensation                 1,350 1,641
CRO and regulatory costs                 36 186
Administrative personnel compensation costs, including stock-based compensation                 1,592 1,434
Rent and office costs                 279 365
Legal and accounting costs                 1,223 2,287
Other expenses                 120 202
Total operating expenses 21,709     1,178     24,136 3,518 4,600 6,115
Loss from operations (21,709)     (1,103)     (24,136) (3,418) (4,500) (6,070)
Loss on change in the fair value of related party Tasly convertible debt 258     (320)     (52) (427) (311) (22)
Interest expense (including related parties amounts of $2,400 and $2,530 for the year ended December 31, 2024 and 2023, respectively) (169)     (1,073)     (2,496) (3,138) (4,424) (4,283)
Other income                 5 94
Total other expense, net (483)     (1,394)     (3,120) (3,560) (4,730) (4,211)
Net loss and comprehensive loss $ (22,192) $ (2,348) $ (2,716) $ (2,497) $ (2,410) $ (2,071) $ (27,256) $ (6,978) $ (9,230) $ (10,281)