Patent ID: 6368324
Filing Date: 2002-04-09
Classification: A61B

Abstract:
A powered surgical handpiece assembly comprisinga powered surgical handpiece having a rotatable drive shaft, said handpiece having an open distal end and a passage extending proximally from said open distal end in communication with said drive shaft; a handpiece adapter including a housing, a rear drive shaft having a distal end disposed in said housing and a proximal end removably, drivingly engaged with said drive shaft of said handpiece, a front drive shaft having a distal end and a proximal end, and a motion converting mechanism mechanically coupling said proximal end of said front drive shaft with said distal end of said rear drive shaft, said housing including a central longitudinal axis and a plurality of longitudinally extending internal grooves parallel to said central longitudinal axis, said proximal end of said front drive shaft being reciprocatively mounted in said housing, said distal end of said front drive shaft being disposed externally of said housing and said proximal end of said front drive shaft including a plurality of longitudinally extending external grooves, said external grooves being parallel to said central longitudinal axis, each of said external grooves forming an aligned pair of grooves with one of said internal grooves, respectively, and further including a plurality of ball members captured between said housing and said front drive shaft with said ball members including a cam at said distal end of said rear drive shaft and a cam follower at said proximal end of said front drive shaft, said rear drive shaft being rotatable with said drive shaft of said handpiece, said cam being rotatable with said rear drive shaft, said cam follower being reciprocatively moved by said cam to reciprocate said front drive shaft in response to rotation of said cam by said rear drive shaft; and a cutting member having a proximal end removably coupled with said distal end of said front drive and having a distal end for cutting anatomical tissue, said cutting member being reciprocatively driven by said front drive shaft of said adapter when said front drive shaft is reciprocated, via said motion converting mechanism, in response to rotation of said drive shaft of said handpiece.