Patent ID: 8292899
Filing Date: 2012-10-23
Classification: A61B

Abstract:
1. A hand tool comprising: a collet having a proximal end and a distal end, the distal end being engageable with a proximal end of a fastener; a chuck body configured to receive the proximal end of the collet; a handle configured to receive a proximal end the chuck body; and a closing mechanism coupled to the handle, the closing mechanism being operable to forcibly secure the proximal end of the collet against the chuck body to engage the distal end of the collet with the proximal end of the fastener; wherein the closing mechanism comprises a knob and a shaft disposed within the handle, the shaft being threadably coupled to the proximal end of the collet at a first end and co-rotatably coupled to the knob at a second end, and wherein rotation of the knob in a first direction rotates the shaft in the first direction and moves the collet in a proximal direction against the chuck body via the threaded coupling between the first end of the shaft and proximal end of the collet, and rotation of the knob in a second direction opposite the first direction rotates the shaft in the second direction and moves the collet in a distal direction away from the chuck body via the threaded coupling between the first end of the shaft and the proximal end of the collet; and wherein the closing mechanism further comprises a lever pivotally coupled to the handle and coupled to the shaft via a locking member, and wherein the lever is pivotable in a third direction relative to the handle to move the shaft in the distal direction along the handle and move the collet in the distal direction against the chuck body, and pivotable in a fourth direction relative to the handle, the fourth direction being opposite the third direction, to move the shaft in the proximal direction along the handle and move the collet in the proximal direction away from the chuck body.