Patent ID: 7559927
Filing Date: 2009-07-14
Classification: A61B,Y10T

Abstract:
1. A surgical instrument for the dissection of bone or other tissue, the surgical instrument comprising: a motor having a power output; a tool having a shaft with a dissection area disposed adjacent a distal end and a coupling area disposed adjacent an opposite proximal end; a first coupling assembly configured for selectively coupling said power output to said coupling area of said tool in a run position, said first coupling assembly including an unlock position wherein said tool may be decoupled from said power output, said first coupling assembly further including an actuator for controlling movement of said first coupling assembly from said run position to said unlock position; an attachment tube positioned along at least a portion of said shaft and substantially supporting a portion of said shaft disposed adjacent said dissection area, wherein said attachment tube is movable to adjust said actuator between said run position and said unlock position; and a second coupling assembly linked to said first coupling assembly, said second coupling assembly operable to selectively lock said attachment tube to said second coupling assembly; wherein said second coupling assembly includes a locked position wherein said attachment tube is locked to said second coupling assembly, a guiding position wherein said attachment tube is moveably coupled to said second coupling assembly, and an open position wherein said attachment tube is removable from said second coupling assembly; wherein said second coupling assembly and said attachment tube include a projection and detent retention system therebetween to retain said attachment tube in said guiding position.