Seat

You examine the seat you just escaped from. It looks like a dentist's chair, with a reclineable back and armrests. There's a metal arm on a swivel back behind the headrest that you didn't notice when you were restrained. There's a myriad of nasty looking tools on the end, all of them connected to rubber tubes that lead down to and through a pigeon hole in the floor. The hole is too tight to even let your finger through, so you don't even bother.

Interestingly, this arm only reaches out as far as the patient's head would be on the chair. Brain surgery perhaps? Whatever the reason, it doesn't bode well for you to hang around.