Patent ID: 9421014
Filing Date: 2016-08-23
CPC Classification: A61B

Claim Text:
1. A loading unit for a surgical stapling device, comprising: a cartridge assembly and an anvil assembly, the cartridge assembly including a channel and a staple cartridge having a plurality of surgical staples therein; an axial drive assembly with a clamping member, the clamping member having an upper flange for engaging the anvil assembly, and a lower flange for engaging the channel; mechanical features defined in the channel for indicating an end of stroke for the axial drive assembly, the mechanical features having a first pattern and a second pattern; a motor coupled to the axial drive assembly, the motor configured to move the axial drive assembly through the staple cartridge to drive the staples out of the staple cartridge and against the anvil assembly; and a controller coupled to the motor and configured to determine the end of stroke based on a change in torque at the motor in response to the clamping member engaging the mechanical features.