It would need to be survive an autoclave, for one thing. It would need to be possible to actually clean it, not shed bits of paint and plastic into the patient'

It would need to be survive an autoclave, for one thing. It would need to be possible to actually clean it, not shed bits of paint and plastic into the patient's skull, material compatibility with antiseptics, etc. If I thought about it for a few minutes, I'm sure I could create a long list of requirements for a suitable saw.