Bipolar biopsy device utilizing a rotatable, single-hinged movin

Details Bipolar biopsy device utilizing a rotatable, single-hinged movin Bipolar biopsy device utilizing a rotatable, single-hinged movin

1992-04-09

1993-06-08

Pellegrino, Stephen C.

Surgery

Instruments

Electrical application

606 1, 606 39, 606 45, 606 50, 128362, 128751, 128783, 128790, A61B 1739

Patent

active

052174581

ABSTRACT:
A bipolar biopsy device for removing tissue samples for biopsy purposes or other purposes. The bipolar biopsy device has an elongated flexible end and a lumen extending therebetween. A cutting head is mounted on the distal end and has a hollow fixed member containing an electrode having an electrical surface thereon and a hollow cup-shaped moveable relative to the fixed member. The electrode surfaces are electrically connected to an outside voltage source. A handle is affixed to the proximal end and a core wire is affixed to the handle which extends through the lumen and is affixed to the movable hollow cup-shaped member. The core wire manipulated by way of the handle facilitates the movement of the movable cup-shaped member. Tissue samples are obtained by positioning the electrode surfaces close to each other about the tissue sample. An arc is created to break tissue down by applying a voltage to the 2 electrode surfaces. The cut tissue remains within the cup-shaped members as the device is withdrawn from the body for later biopsy purposes.

REFERENCES:
patent: 659409 (1900-10-01), Mosher
patent: 1952617 (1934-03-01), Wappler
patent: 2011169 (1935-08-01), Wappler
patent: 2031682 (1936-02-01), Wappler et al.
patent: 4655216 (1987-04-01), Tischer
patent: 4953559 (1990-09-01), Salerno
patent: 4976711 (1990-12-01), Parins et al.
patent: 5085659 (1992-02-01), Rydell

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