Sphincterotomy method and device having controlled bending and o

Details Sphincterotomy method and device having controlled bending and o Sphincterotomy method and device having controlled bending and o

1989-03-03

1991-06-18

Hindenburg, Max

Surgery

Instruments

Electrical application

A61B 1736

Patent

active

050246178

ABSTRACT:
A sphincterotome, such as a papillotome, is disclosed for surgical cutting using an electrically conductive cutter wire. The sphincterotome includes a multi-lumen tubular member, with one lumen having an electrical conductor disposed therein, and the other lumen having a reinforcing wire disposed therein. The reinforcing wire is preferably rectangular in cross-section, providing a greater moment of inertia in a resisting axis than in a bending axis. Accordingly, the cutting edge of the cutting wire may be oriented to the 12 o'clock position of the papillary orifice to avoid injury to the duodenal wall or pancreatic duct in the patient, and to maintain the cutting edge in a predetermined cutting plane. Fluoroscopic indicating stripes may be provided at the distal end of the sphincterotome. A method of use and method of fabrication of the present invention is also disclosed.

REFERENCES:
patent: 3552384 (1971-01-01), Pierie
patent: 4325374 (1982-04-01), Komiya
patent: 4474174 (1984-10-01), Petruzzi
patent: 4485812 (1984-12-01), Harada et al.
patent: 4545390 (1985-10-01), Leary
patent: 4724836 (1988-02-01), Okada
patent: 4807626 (1989-02-01), McGirr
Wilson-Cook Medical Inc. product information brochure, 1988.
Waye, J., Geenen, J., Fleischer, D., and Venu, R., "Techniques in Therapeutic Endoscopy", Endoscopic Sphincterotomy, Wilson-Cook Medical Inc., 1987.

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