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Segments (Tables)
 6 Months Ended 12 Months Ended
Jun. 30, 2025
Dec. 31, 2024
Segments [Line Items]    
Schedule of Other Financial Information Regarding The Company’s Operating Segment See the consolidated condensed financial statements for other financial information regarding the Company’s operating segment.
   Three Months Ended
June 30,		 
   2025   2024 
Government grant revenue  $
—
   $25 
Operating expenses:          
Research personnel compensation costs, including stock-based compensation   320    385 
CRO and regulatory costs   
—
    
—
 
Administrative personnel compensation costs, including stock-based compensation   401    350 
Rent and office costs   118    80 
Legal and accounting costs   110    179 
Other expenses(1)   54    7 
Total segment expenses   1,003    1,001 
Loss from operations   (1,003)   (976)
Other income (expense)          
Loss on change in the fair value of related party Tasly convertible debt   (57)   (15)
Interest expense   (1,289)   (1,081)
Other income   1    1 
Total other expense, net   (1,345)   (1,095)
Net loss and comprehensive loss  $(2,348)  $(2,071)
(1)Other expenses includes small balances of research materials and supplies along with insurance costs.
   Six Months Ended
June 30,		 
   2025   2024 
Government grant revenuet  $
—
   $25 
Operating expenses:          
Research personnel compensation costs, including stock-based compensation   658    818 
CRO and regulatory costs   
—
    15 
Administrative personnel compensation costs, including stock-based compensation   736    712 
Rent and office costs   318    162 
Legal and accounting costs   649    592 
Other expenses(1)   66    41 
Total segment expenses   2,427    2,340 
Loss from operations   (2,427)   (2,315)
Other income (expense)          
Loss on change in the fair value of related party Tasly convertible debt   (118)   (11)
Interest expense   (2,519)   (2,161)
Other income   
—
    6 
Total other expense, net   (2,637)   (2,166)
Net loss and comprehensive loss  $(5,064)  $(4,481)
(1)Other expenses includes small balances of research materials and supplies along with insurance costs.
 Other segment items within net loss include interest income, interest expense and loss on change in fair value of related party loan. See the consolidated financial statements for other financial information regarding the Company’s operating segment.
   Year Ended
December 31,		 
   2024   2023 
Government grant revenue  $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(1)   120    202 
Total segment expenses   4,600    6,115 
Loss from operations   (4,500)   (6,070)
Other income (expenses)          
Loss on change in the fair value of related party Tasly convertible debt   (311)   (22)
Interest expense (including related parties amounts of $2,400 and $2,530 for the year ended December 31, 2024 and 2023, respectively)   (4,424)   (4,283)
Other income   5    94 
Total other expense, net   (4,730)   (4,211)
Net loss and comprehensive loss  $(9,230)  $(10,281)
(1) Other expenses includes small balances of research materials and supplies along with insurance costs.
NorthView Acquisition Corp [Member]    
Segments [Line Items]    
Schedule of Company’s Performance and Making Key Decisions Regarding Resource Allocation When evaluating the Company’s performance and making key decisions regarding resource allocation, the CODM reviews several key metrics included in net loss and total assets, which include the following:
   As of
June 30,
2025		   As of
December 31,
2024		 
Trust Account  $1,935,561   $8,330,835 
Cash  $
—
   $16,204 
Restricted Cash  $1,751   $
—
 
   For the Three Months Ended
June 30,		   For the Six Months Ended
June 30,		 
   2025   2024   2025   2024 
Formation and operating costs   967,084    253,130    1,550,665    723,971 
Interest income earned on cash and marketable securities held in Trust Account   15,159    108,520    95,084    225,184 
 When evaluating the Company’s performance and making key decisions regarding resource allocation, the CODM reviews several key metrics included in net (loss) income and total assets, which include the following:
   For the
Year Ended
December 31,
2024		   For the
Year Ended
December 31,
2023		 
Trust Account  $8,330,835   $10,873,406 
Cash  $16,204   $4,519 

 

   For the
Year Ended
December 31,
2024		   For the
Year Ended
December 31,
2023		 
General and administrative expenses  $(1,351,038)  $(1,508,683)
Interest earned on the Trust Account  $425,416   $2,248,538