Patent ID: 7201731

Claim:
A treatment device assembly for an endoscopic surgical instrument having a housing and being provided with a conduit comprising: a) a needle having a radio frequency electrode with a hollow core and an insulating layer surrounding a portion of the electrode proximate a distal end of the needle; b) a cannula for slidably receiving said needle so as to guide said needle, said cannula including a curvable surface that deflects said needle at an angle from a primary axis of said needle and includes a bendable portion having a wire enclosed therein; c) a control mechanism for extending and retracting said needle; d) means for interlocking said assembly to the housing of said endoscopic surgical instrument so as to extend said needle and cannula through the conduit of said endoscopic surgical instrument; and (e) a finger actuatable mechanism that tensions said wire such that when said wire is tensioned through operation of said finger actuatable mechanism, said bendable portion is angled away from a primary axis of said cannula and said needle is deflected away from said primary axis.