Forceps device for endoscope

• US 4,038,987 A
• Filed: 02/04/1975
• Issued: 08/02/1977
• Est. Priority Date: 02/08/1974
• Status: Expired due to Term

• Current Assignee: Olympus Optical Corporation Limited (Olympus Corporation)
• Original Assignee: Olympus Optical Corporation Limited (Olympus Corporation)
• Inventors: Komiya, Osamu
• Primary Examiner(s): Pace, Channing L.
• Application Number:
  US05/546,929
• Time in Patent Office: 910 Days
• Field of Search: 128/321, 128/303.15
• US Class Current: 606/142
• CPC Class Codes: A61B 17/122 Clamps or clips , e.g. for the umbilical cord for the vas deferens A61F6/206
• CPC Class Codes: A61B 17/1227 Spring clips
• CPC Class Codes: A61B 17/1285 for minimally invasive surgery
• CPC Class Codes: A61B 17/29 Forceps for use in minimally invasive surgery
• CPC Class Codes: A61B 17/320016 Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes A61B10/0233, A61B17/29, A61B17/3207 take precedence
• CPC Class Codes: A61B 2017/2939 Details of linkages or pivot points
• CPC Class Codes: A61B 2017/2941 Toggle linkages

Abstract

The forceps device for an endoscope includes a toggle joint operated through a wire coupling by the wire operation. Said toggle joint has a pair of forceps levers whose forward end portions constitute an operating section and whose intermediate portions are pivotally supported, and a pair of links connected between the base ends of said pair of forceps levers and said wire coupling.

Claims

1. A forceps device to be inserted through an endoscope into a body cavity, comprising an outer covering tube, a forceps holder attached to one end portion of said outer covering tube, a pair of forceps levers each having operating end portions forming jaws, connecting end portions and intermediate portions therebetween pivotally supported on said forceps holder, means for operating said levers consisting of a pair of links each respectively pivotally connected to said one end of said connecting end portions of said forceps levers, a wire coupling pivotally connected to the other ends of said pair of links at a pivot point, and a wire having one end connected to said wire coupling and the other end extended through said outer covering tube, therealong, said pair of forceps levers and said pair of links constituting a toggle joint whereby when said wire coupling has been moved by pulling the same from its other end, said links are moved to a position approaching a substantially straight line drawn between the pivots connecting said forceps levers and links, and the pivot point of said wire coupling, said forceps levers being rocked through said links to permit said operating end portions of said levers to be moved in a clamping direction approaching each other.

2. A forceps device according to claim 1, wherein said operating end portions of said forceps levers have clip inserting grooves formed, respectively, in their mutually opposite faces.

3. A forceps device according to claim 1, wherein said operating forward end portions of said forceps levers have cup-shaped gripping sections.

4. A forceps device according to claim 1, which further comprises an outer guide tube having a forward end portion for selectively covering the outer side faces of said forceps levers and slidably disposed on the outside of said covering tube.

5. A forceps device according to claim 1, wherein said forceps levers are pivotally supported on said forceps holder about the same axis.

6. A forceps device according to claim 1, wherein said forceps levers pivotally supported on said forceps holder about different axes.