Progressive die/carrier apparatus and method of forming surgical

Details Progressive die/carrier apparatus and method of forming surgical Progressive die/carrier apparatus and method of forming surgical

1995-06-02

1997-06-24

Crane, Daniel C.

Metal deforming

With cutting

By shearing tool-couple

72339, 72404, 163 1, 163 5, B21G 100, B21D 2810

Patent

active

056408749

ABSTRACT:
There is disclosed an apparatus and a method for progressively forming high strength surgical needles from bulk needle stock material. The apparatus generally includes a series of progressive needle processing stations. A first series of needle processing stations removes material from needle stock material to rough form needle blanks attached to a carrier strip while a second series of processing stations refine the rough formed needle blanks attached to the strip into the desired surgical needles. The disclosed method generally includes the steps of gutting needle stock material to rough form needle blanks attached to a carrier strip and progressively coining the rough formed blanks into surgical needles. Finally, there is disclosed a high bend strength surgical needle formed on the disclosed apparatus or by the disclosed method. Preferably, the surgical needle is a surgical incision member having a predetermined radius of curvature and an optimized conical radius at the tips.

REFERENCES:
patent: 3461708 (1969-08-01), Pepe
patent: 4455858 (1984-06-01), Hettich
patent: 4524815 (1985-06-01), Pavel
patent: 4541470 (1985-09-01), Pavel
patent: 4598753 (1986-07-01), Zylbert
patent: 4672734 (1987-06-01), Kawada et al.
patent: 4785868 (1988-11-01), Koenig, Jr.

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