Recapitalization - Schedule of Profusa Shares (Details)	Sep. 30, 2025 shares
Legacy Profusa Shares [Member]
Schedule of Profusa Shares [Line Items]
Legacy Profusa Shares	17,938,662
Legacy Profusa Shares [Member] \| Preferred Stock [Member]
Schedule of Profusa Shares [Line Items]
Legacy Profusa Shares	17,863,934
Legacy Profusa Shares [Member] \| Class A Common Stock [Member]
Schedule of Profusa Shares [Line Items]
Legacy Profusa Shares	74,728
Profusa Shares Shares after Conversion Ratio [Member]
Schedule of Profusa Shares [Line Items]
Profusa Shares after conversion ratio	114,586
Profusa Shares Shares after Conversion Ratio [Member] \| Preferred Stock [Member]
Schedule of Profusa Shares [Line Items]
Profusa Shares after conversion ratio	82,377
Profusa Shares Shares after Conversion Ratio [Member] \| Class A Common Stock [Member]
Schedule of Profusa Shares [Line Items]
Profusa Shares after conversion ratio	32,209

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details