Patent ID: 9168042
Filing Date: 2015-10-27
Classification: A61B

Abstract:
1. A circular stapler comprising: a handle assembly; an elongate body extending from the handle assembly; and, a cartridge assembly mounted on a distal end of the elongate body, the cartridge assembly including a pusher assembly and a knife assembly, the knife assembly including a knife pusher and a knife, wherein the knife is selectively fixed relative to the knife pusher and the pusher assembly and mounted for independent movement of the knife pusher and the pusher assembly relative to the knife, the knife being detached from the knife pusher and the pusher assembly in a first stroke, and attached to the knife pusher and the pusher assembly in a second stroke, wherein the knife pusher is advanced a first distance during the first stroke and retracted a second distance following the first stroke, the second distance being greater than the first distance.