Patent ID: 9693814
Date: 2017-07-04
CPC Classifications: A61B,B25B,B25G,Y10T

Claim:
1. A method for limiting torque that is transferred from a handle end of a driving instrument through a torque transfer member to a shaft that extends from the handle along an instrument axis, at least a portion of the torque transfer member received in a cavity of the handle, the cavity extending inwardly in a radial direction from a wall of the handle toward the instrument axis, the radial direction being perpendicular to the instrument axis, the method comprising the steps of: applying a torque to the handle along a direction relative to the shaft; transmitting the applied torque from the handle through the torque transfer member to the shaft when the applied torque is less than a limited torque value; and deforming at least a portion of the wall in the radial direction with the torque transfer member when the applied torque is greater than the limited torque value so as to allow the handle to rotate along the rotation direction relative to both the torque transfer member and the shaft when the applied torque is greater than the limited torque value.