TORQUE-LIMITING ASSEMBLY FOR A SURGICAL POWERTOOL

摘要

A torque-limiting assembly 10 for a surgical powertool is described. The assembly 10 comprises an input shaft 22 and an output shaft 56, wherein two relatively rotatable parts of the assembly 10 are configured to be locked against relative rotation by at least one shearable piece 64 for torque transfer between the input shaft 22 and the output shaft 56 up to a torque limit. The assembly 10 further comprises at least one shear off structure 90 rotationally fixed to one of the two relatively rotatable parts for shearing off a portion of the at least one shearable piece 64 above the torque limit so as to unlock the two relatively rotatable parts for relative rotation.