Biopsy forceps with tissue ejection means

Details Biopsy forceps with tissue ejection means Biopsy forceps with tissue ejection means

1995-03-10

1996-11-19

Buiz, Michael Powell

Surgery

Instruments

Forceps

128751, A61B 1000

Patent

active

055758061

ABSTRACT:
An improved biopsy forceps for retrieving a tissue sample from an internal organ is provided with flexible resilient means for ejecting a tissue sample from the cups after the sample is retrieved from the internal organ. The ejector means can comprise a leaf spring extending between the cups and biased in a convex distal direction so that it springs outward when the cups are fully opened, ejecting the tissue sample. An actuating wire has a spring latch for moving the leaf spring to the ejection position and for returning it to a position inside the cups. The wire disengages from the cups so that it can extend distally no eject the sample. A latch mechanism at the proximal end of the wire selectively prevents actuation.

REFERENCES:
patent: 4721116 (1988-01-01), Schintgen et al.
patent: 4763668 (1988-08-01), Macek et al.
patent: 4785825 (1988-11-01), Romaniuk et al.
patent: 5082000 (1992-01-01), Picha et al.
patent: 5172700 (1992-12-01), Bencini et al.
patent: 5370659 (1994-12-01), Sakashita
patent: 5373854 (1994-12-01), Kolozsi

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