A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
128/113, 18/785
A61B 17/32 (2006.01) A61B 18/14 (2006.01) A61B 17/28 (2006.01) A61M 25/01 (2006.01)
Patent
CA 2007657
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.
Smart & Biggar
Wilson-Cook Medical Inc.
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