Patent ID: 7669747
Filing Date: 2010-03-02
Classification: A61B,A61F,Y10S

Abstract:
1. A circular cutting and stapling surgical instrument comprising: a head, comprising: an anvil facing the head; and a washer, having a first surface and a second surface, wherein the washer is inserted in the anvil such that the washer is between the anvil and the head such that the first surface of the washer faces the head and the second surface of the washer faces the anvil, wherein the washer comprises an inner portion and an outer portion, wherein the inner portion is connected to the outer portion by a plurality of tabs that are aligned radially with the circular cutting instrument of the head, and wherein the washer is configured in the anvil such that when the instrument is fired, the cutting instrument cuts tissue between the head and the washer and cuts the tabs of the washer such that the inner portion is separated from the outer portion,