Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work – Layered – stratified traversely of length – or multiphase...
Patent
1990-09-20
1991-12-24
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
Forming continuous or indefinite length work
Layered, stratified traversely of length, or multiphase...
264174, 2641771, 26417714, 2642091, 264238, B29C 4700, B29C 4702
Patent
active
050750623
ABSTRACT:
A method of fabrication of a sphincterotome, such as a papillotome, 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.
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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.
Eastley Brian J.
Silbaugh Jan H.
Wilson-Cook Medical Inc.
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