Patent ID: 8136431
Filing Date: 2012-03-20
Classification: A61B,B25B

Abstract:
1. An instrument comprising: a torque wrench for use with an implantable medical device, the torque wrench comprising: a handle having first and second ends and defining a bore extending between the first and second ends, the handle including a plurality of anti-rotation members extending from an inner surface into the bore at the second end of the handle; a drive shaft member including a middle portion having a first and second ends, a drive shaft extending from the first end and a plurality of fingers extending from an exterior surface that is located inside the handle, the plurality of fingers interdigitate with the anti-rotation members; and a compressible member surrounding a middle portion of the drive shaft member, the compressible member being movable between a first configuration in which the plurality of fingers are disengaged from the anti-rotation members and a second configuration in which the plurality of fingers are engaged to the anti-rotation members for transferring torque to the drive shaft.