APPARATUS AND METHOD FOR TREATMENT OF ETHMOID SINUSITIS

摘要

An apparatus may be used to form an opening in a sinus wall. The apparatus comprises a first cutting member and a second cutting member. The first cutting member comprises a sharp tip and a helical blade. The second cutting member is slidably disposed about the first cutting member. The second cutting member comprises a sharp distal edge. An outer sheath is slidably disposed about the first and second cutting member. The sheath may be retracted to uncover the helical blade. The sharp tip may be used to pierce the sinus wall and the helical blade may be used to drive the first cutting member through the sinus wall. The second cutting member may be advanced over the first cutting member to form a circular opening in the sinus wall.

主权项

1. An apparatus, wherein the apparatus comprises:
(a) a first cutting member, wherein the first cutting member comprises:
(i) a sharp tip, and(ii) a helical blade proximal to the tip; and (b) a second cutting member coaxially positioned about the first cutting member, wherein the second cutting member comprises a sharp distal edge, wherein the second cutting member is operable to translate relative to the first cutting member to selectively cover at least a portion of the helical blade.