Patent ID: 7951165

Claim:
A medical instrument, comprising: a tubular member having a distal end and a proximal end; a handle attached to the proximal end of the tubular member; a pair of end effectors supported on a pivot portion; an elongate member corresponding to each of the pair of end effectors, each elongate member extending through the tubular member and having a proximal end attached to the handle and a distal end coupled to the corresponding end effector, and a clevis attached to the distal end of the tubular member, wherein the clevis has a center axis and a pair of stops, each stop configured to prevent rotation of a corresponding end effector past the center axis, wherein the stops are formed in distalmost surfaces of the clevis, wherein each end effector includes a first stop surface and a second stop surface, wherein each of the first and second stop surfaces is proximal of a portion of the end effector defining a cutting edge, wherein the first stop surface of each of the pair of end effectors is a proximally facing wall, and wherein substantially the entire wall of the first stop surface of one of the end effectors contacts the second stop surface of the other of the end effectors at a maximum opening of the end effectors.