Patent ID: 7458494
Filing Date: 2008-12-02
Classification: A61B

Abstract:
1. A surgical stapler comprising: a body capable of containing a plurality of staples in an aligned state; a ram provided inside said body, having a central concave portion and pressure armatures on both sides of the concave portion; an anvil that, when the armatures of said ram contact both sides of a crown of a staple, forces the center of the crown into the concave portion of the ram; and a trigger rotatably supported on the body so as to cause relative movement between the ram and the anvil, wherein the staples are circular in cross-section, a front edge of a bottom surface of the concave portion of the ram has a slanted surface slanting outwardly in a direction away from the central concave portion of the ram, a ridge line of a front edge of said slanted surface contacting a staple on the anvil at a position offset to the rear of a center line of the staple.