v3.26.1
Document And Entity Information
12 Months Ended
Dec. 31, 2025
Document Information Line Items  
Entity Central Index Key 0001859807
Amendment Description Amendment No. 1
Document Type S-1/A
Entity Registrant Name PROFUSA, INC.
Entity Address, State or Province DE
Entity Filer Category Non-accelerated Filer
Entity Small Business true
Entity Emerging Growth Company true
Entity Ex Transition Period false
Amendment Flag true