Cautery probes for endoscopic electrosurgical suction-irrigation

Details Cautery probes for endoscopic electrosurgical suction-irrigation Cautery probes for endoscopic electrosurgical suction-irrigation

1992-10-09

1994-05-17

Pellegrino, Stephen C.

Surgery

Instruments

Electrical application

606 46, 606 45, 606 49, A61B 1736

Patent

active

053124006

ABSTRACT:
A cautery probe is described for use with an endoscopic instrument where the endoscopic instrument has an electrical contact located therein. The probe includes an insulated handle which extends out of the instrument, a conductive probe element which is mounted in the insulated handle and extends through the distal end of the endoscopic instrument, and an insulating cover. The conductive probe element has a distal cautery surface, and an electrical contact surface at a location between the proximal end of the conductive probe and the distal cautery surface, with the electrical contact surface contacting the electrical contact in the endoscopic instrument when said cautery probe is inserted in the endoscopic instrument. The insulating cover substantially covers the conductive probe element from the insulated handle up to but not at the electrical contact surface, and substantially covers the probe element from a point beyond the electrical contact surface, up to but not at the distal cautery surface. Preferably, the cannula of the endoscopic instrument is used as the electrical contact, and the electrical contact surface of the probe element is a bump which contacts the cannula.

REFERENCES:
patent: 3740779 (1973-06-01), Rubricuis
patent: 4034761 (1977-07-01), Prater et al.
patent: 4494539 (1985-01-01), Zenitani et al.
patent: 4617013 (1986-10-01), Betz
patent: 5088998 (1992-02-01), Sakashita et al.

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