Method of manufacturing a stamped biopsy forceps jaw

Details Method of manufacturing a stamped biopsy forceps jaw Method of manufacturing a stamped biopsy forceps jaw

2007-02-06

2007-02-06

Larson, Lowell A. (Department: 3725)

Metal deforming

Process

Deforming sheet metal

C072S336000

Reexamination Certificate

active

10832318

ABSTRACT:
A method of progressive die stamping manufacturing a biopsy forceps jaw comprising the steps of cutting a sheet of metal into a strip. The strip of metal may then be punched with a series of guide holes. A shape larger than a pattern of the biopsy forceps jaw may then be defined in the strip of metal. An actuating hole may be punched into the shape. A concave shaped cup portion of the biopsy forceps jaw may be drawn. The pattern of the biopsy forceps jaw may then be cut to expose a cutting edge and exposed edges of the pattern. The cutting edge can be coined to provide a hardened, sharp, cutting edge. The exposed edges may be chamfered and then the pattern may be folded and shaped to form a biopsy forceps jaw cup and an arm positioned relative to the biopsy forceps jaw cup. A pivot hole may then be punched into the arm. The biopsy forceps jaw may then go through a calibration so that the cutting edge is in a plane perpendicular to a plane of the arm. The jaw cup may then be cut off of the strip of metal.

REFERENCES:
patent: 5133727 (1992-07-01), Bales et al.
patent: 5647115 (1997-07-01), Slater et al.
patent: 5707392 (1998-01-01), Kortenbach
patent: 6378351 (2002-04-01), Ouchi et al.
patent: 6440085 (2002-08-01), Krzyzanowski
patent: 2005/0054946 (2005-03-01), Krzyzanowski

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