Patent Number: 6,168,605

Title: Curved laparoscopic scissor having arcs of curvature

Abstract: A laparoscopic surgical scissors for cutting tissue is disclosed. The laparoscopic surgical scissors has a handle body assembly having an actuation member moveable toward and away from the handle body assembly. An elongated shaft having a proximal and a distal end that define a longitudinal axis is connected to the handle body assembly at the proximal end of said shaft. A pair of cutting blades have a first blade member and a second blade member that are co-operably connected about a common pivot member adjacent to the distal end of the elongated shaft. The common pivot member defines a common pivot axis perpendicular to the elongated shaft. The first blade member has a first cutting edge and the second blade member has a second cutting edge facing the first cutting edge. The blade members have a single point of blade contact translating proximally and distally as the blade members open and close in response to movement of the actuation member away from and toward the handle body assembly. Each of the blade members defines a curvature along the shaft longitudinal axis and each of the curvatures has a proximal end and a distal end. A proximal arc of curvature and a distal arc of curvature define the curvature of each of the blade members.

Inventors: Measamer; John P. (Cincinnati, OH), Koch, Jr.; Robert L. (Cincinnati, OH), Sambi; Narinderjit S. (Mason, OH)

Assignee: Ethicon Endo-Surgery, Inc.

International Classification: A61B 17/32 (20060101); A61B 017/32 ()

Expiration Date: 01/02/2018