Bipolar electrosurgical instrument for cutting and sealing tubul

Details Bipolar electrosurgical instrument for cutting and sealing tubul Bipolar electrosurgical instrument for cutting and sealing tubul

1998-04-23

1999-04-06

Dawson, Glenn K.

Surgery

Instruments

Electrical application

606 51, 606167, A61B 1736, A61B 1732

Patent

active

058911413

ABSTRACT:
An electrosurgical instrument for cutting and coagulating tubular tissue structures, especially tubular ones, includes a pair of spaced-apart electrodes that are stationarily mounted at the distal end of an elongated tubular barrel. A hook-shaped cutting member has an incline segment thereon for cooperating with a ramp formed at the distal end of the instrument. A tubular body structure to be severed is first brought into contact with electrodes and subjected to a RF current sufficient to coagulate and seal the same. Actuation of a lever on the instrument's handle causes the hook-shaped cutting member to deflect into a space containing the tissue structure and with continued actuation in a proximal direction causing a cutting edge on the hook of the cutting member to pass through and sever the tissue structure.

REFERENCES:
patent: 2068721 (1937-01-01), Wappler et al.
patent: 4418692 (1983-12-01), Guay
patent: 4985030 (1991-01-01), Melzer et al.
patent: 5190541 (1993-03-01), Abele et al.
patent: 5269780 (1993-12-01), Roos

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