Diathermy coagulation and ablation apparatus and method

Details Diathermy coagulation and ablation apparatus and method Diathermy coagulation and ablation apparatus and method

1993-06-29

1995-03-07

Pellegrino, Stephen C.

Surgery

Instruments

Electrical application

606 45, 606 48, 606 50, A61B 1739

Patent

active

053953630

ABSTRACT:
An apparatus for facilitating diathermy coagulation or ablation of tissue by the application of an electrical current to tissue is connectable to an electrosurgical generator having an active lead and a return lead, and has both monopolar and bipolar embodiments. A preferred monopolar embodiment includes a shaft and a knurled active electrode rotatably secured to the shaft. A preferred bipolar embodiment includes a knurled active electrode separated by an insulator from a return electrode, with the active and return electrodes rotatably secured to a shaft by axles. The shafts may be Y-shaped, crook-shaped, or otherwise. The active electrodes have a plurality of discrete electrically conductive discharge points for applying the electrical current to a plurality of discrete tissue locations, the discharge points preferably being formed as knurl peaks. The active electrode may be formed of a stick-resistant metal, may be covered in part or whole by a nonstick coating, and may be formed in a variety of shapes and sizes.

REFERENCES:
patent: 642849 (1900-02-01), Otto
patent: 4095601 (1978-06-01), Aufrank et al.
patent: 4314559 (1982-02-01), Allen
patent: 4532924 (1985-08-01), Auth et al.
patent: 4765331 (1988-08-01), Petruzzi et al.
patent: 4917082 (1990-04-01), Grossi et al.

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