05820009 is referenced by 735 patents and cites 76 patents.

This invention provides an articulated surgical instrument for use in laparoscopic surgical procedures including, in general, a handle, an elongated shaft, and a tip. The shaft is coupled to the handle, and the tip is pivotally coupled to the distal end of the shaft for articulation about an articulation axis. The tip includes two opposed jaws. The jaws are pivotally coupled at a pivot axis for movement between an open position and a closed position, and at least one of the jaws has a camming portion proximal to the pivot axis of the jaws. The instrument further includes a camming driver disposed in the shaft for reciprocating movement between a proximal position and a distal position. The camming driver has a camming portion. The drive camming portion contacts the jaw camming portion at a cam point. Preferably, the jaw camming portion is a hemispherically-shaped projection and the driver camming portion is a ramp. Movement of the camming driver from its proximal position to its distal position causes the jaws to pivot from their open position to their closed positions.

Title
Articulated surgical instrument with improved jaw closure mechanism
Application Number
8/603998
Publication Number
5820009
Application Date
February 20, 1996
Publication Date
October 13, 1998
Inventor
Jeffrey R Oberlin
Augusta
MI, US
Christopher L Johnson
Plainwell
MI, US
Hugh Melling
Harbor Springs
MI, US
Agent
Howard & Howard
Assignee
Richard Allan Medical
MI, US
IPC
A61B 17/115
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