Instrument for surgically cutting tissue

Details Instrument for surgically cutting tissue Instrument for surgically cutting tissue

1994-01-05

1995-12-19

Pellegrino, Stephen C.

Surgery

Instruments

Cutting, puncturing or piercing

604 22, A61B 1000, A61B 1732

Patent

active

054764734

ABSTRACT:
A tissue punch for surgically cutting tissue is provided with an inner shaft having an opening with a cutting edge at its distal end, which collaborates with a counter cutting edge at the distal end of an outer shaft, so that during operation of the tissue punch tissue, which extends through the opening into the inner shaft, is separated by the two cutting edges moving against each other. The inner shaft is rigid and is straight in its proximal region but changes distally into a curved shape. The outer shaft, which moves axially on the inner shaft, is flexible at least in the area of the curve of the inner shaft.

REFERENCES:
patent: Re33258 (1990-07-01), Onik et al.
patent: 3902498 (1975-09-01), Niederer
patent: 4340046 (1982-07-01), Cox
patent: 4603694 (1986-08-01), Wheeler
patent: 4644951 (1987-02-01), Bays
patent: 4646738 (1987-03-01), Trott
patent: 4674502 (1987-06-01), Imonti
patent: 5106364 (1992-04-01), Hayafuji et al.
patent: 5285795 (1994-02-01), Ryan et al.
patent: 5346503 (1994-09-01), Chow

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