Apparatus and method for treatment of ethmoid sinusitis

A surgical apparatus, wherein the surgical apparatus comprises:

• (a) a body,
• (b) a shaft assembly extending distally from the body, wherein the shaft assembly defines a longitudinal axis, wherein the shaft assembly comprises:
• (i) an outer sheath configured to move between a first proximal position and a first distal position,
• (ii) a cutter tube slidably disposed within the outer sheath and configured to move between a second proximal position and a second distal position independently relative to the outer sheath, and
• (iii) a shaft rotatably disposed within the cutter tube, wherein the shaft comprises an auger member extending distally from a distal end of the shaft,
• wherein the shaft and cutter tube are operable to form an opening within a sinus wall.

A method of forming an opening in a sinus wall, the method comprising

• (a) piercing a sinus wall by driving a rotating member through the sinus wall;
• (b) driving a cutting member distally over the rotating member and through the sinus wall, wherein the rotating member is held stationary relative to the sinus wall during the act of driving the cutting member distally;
• and
• (b) removing the rotating member and the cutting member to expose an opening formed by the rotating member and the cutting member in the sinus wall.