How long does a tracheostomy surgery take? and what kind of numbing medicine is involoved?

Varies.: A tracheostomy procedure may last any where from 15 minutes to 1.5 hours, depending on many variables. The types of local anesthesia involved also vary. Therefore, for an accurate/relevant response to your question, best to ask the surgeon involved. Best wishes.

Variable: Different types of surgical approaches. Tracheostomy most commonly performed under general anesthesia with additional local injections around surgical site. The procedure itself, presuming straightforward without prior surgical scarring, can be performed in under 20 minutes.