Patent ID: 9592089
Date: 2017-03-14
CPC Classifications: A61B,Y10T

Claim:
1. A method of assembling a surgical instrument, comprising: inserting a knife into a knife guide; positioning the knife and the knife guide within an inner shaft; moving a drive collar stop having a pair of opposing projections along a longitudinal axis defined through the inner shaft; engaging the pair of opposing projections of the drive collar stop within a corresponding first pair of opposing apertures defined in the inner shaft; moving a drive collar having a cylindrical member and a proximal rim disposed at a proximal end of the cylindrical member along the inner shaft to abut a free distal end of the cylindrical member with the drive collar stop and limit distal movement of the drive collar along the inner shaft; moving a spring along the inner shaft to engage the drive collar and limit distal movement of the spring; compressing the spring; moving an inner shaft stop having a pair of opposing projections transverse to the longitudinal axis defined through the inner shaft; and engaging the pair of opposing projections of the inner shaft stop within a corresponding second pair of opposing apertures defined in the inner shaft proximal to the first pair of opposing apertures to limit proximal movement of the inner shaft and retain the spring between the inner shaft stop and the drive collar in a compressed condition.