TBH, the police involvement is nearly inconsequential.
The patient (regardless of circumstance) needs treatment. That treatment is administered by the hospital, and billed to the patient (and by extension, their insurance if applicable). The patient (and their insurance) can later sue for these expenses if caused by someone else. It gets a bit more complicated if the patient is unconscious or otherwise unable to consent, but still unrelated to the police.
The police will happily sit and wait for the patient to be discharged for any follow-up actions, such as an arrest.
TBH, the police involvement is nearly inconsequential.
The patient (regardless of circumstance) needs treatment. That treatment is administered by the hospital, and billed to the patient (and by extension, their insurance if applicable). The patient (and their insurance) can later sue for these expenses if caused by someone else. It gets a bit more complicated if the patient is unconscious or otherwise unable to consent, but still unrelated to the police.
The police will happily sit and wait for the patient to be discharged for any follow-up actions, such as an arrest.