Rotary tool with improved coupling assembly

摘要

A surgical device comprising a handle assembly comprising a drive shaft; a handle assembly adapter for connection to the handle assembly comprising a transmission shaft for connection to the drive shaft; and a nosepiece assembly for connection to the adapter and for securing the shaft of a working element to the transmission shaft; wherein the adapter and the nosepiece assembly each comprise a locking collar; wherein the adapter and the handle assembly each comprise a connector assembly comprising a housing comprising an opening; a collet sleeve disposed within the opening, connected to an input shaft, and comprising a lumen for receiving an output shaft; a locking element for locking and unlocking the output shaft to the collet sleeve; and a cam element movable between first and second positions such that movement of the locking collar causes the cam element to move between the first position and the second position.

主权项

1. A surgical device comprising:
a handle assembly comprising a rotatable drive shaft; a removable handle assembly adapter for connection to said handle assembly, said removable handle assembly adapter comprising a rotatable transmission shaft for connection to said rotatable drive shaft of said handle assembly; and a removable nosepiece assembly for connection to said removable handle assembly adapter and for selectively securing the shaft of a working element to said rotatable transmission shaft of said removable handle assembly adapter; wherein said removable handle assembly adapter and said removable nosepiece assembly each comprise a locking collar; and wherein said removable handle assembly adapter and said handle assembly each comprise a connector assembly, said connector assembly comprising:
a housing comprising an opening;a collet sleeve disposed within said opening and connected to an input shaft, said collet sleeve comprising a lumen for receiving an output shaft;a locking element movable relative to said collet sleeve between (i) a locked position in which said output shaft is secured to said collet sleeve, and (ii) an unlocked position in which said output shaft is not secured to said collet sleeve; anda cam element movable relative to said collet sleeve between (i) a first position in which said locking element is free to assume its said unlocked position, and (ii) a second position in which said cam element cams said locking element into said locked position; such that movement of said locking collar causes said cam element to move between said first position and said second position; wherein said housing comprises an L-shaped slot, and further wherein said locking collar comprises a follower for extending into said L-shaped slot; wherein said L-shaped slot comprises a first leg and a second leg, and further wherein said first leg extends longitudinally along said housing and said second leg extends circumferentially along said housing; wherein said follower is disposed in said first leg of said L-shaped slot when said locking collar is being mounted onto, or dismounted from, said housing, and further wherein said follower is disposed in said second leg of said L-shaped slot when said locking collar is rotated so as to cause said biasing collar to move said cam element into said second position.