Patent ID: 8876699
Filing Date: 2014-11-04
Classification: A61B

Abstract:
1. A fistulectomy method of forming a fistula between a first duct and a second duct, the fistulectomy method comprising: inserting an insertion portion of an endoscope having a channel into the first duct; inserting a treatment instrument into the channel; piercing the first duct and the second duct from an inner side of the first duct to an inner side of the second duct with a distal end of the treatment instrument; discharging a first magnet from the distal end of the treatment instrument in a discharge direction that deviates from a piercing direction in which the distal end of the treatment instrument pierces the first duct and the second duct; pulling the treatment instrument from the inner side of the second duct to the inner side of the first duct through the duct walls of the second and first ducts; discharging a second magnet to the inner side of the first duct; and attracting the duct walls of the first and second ducts between the first and second magnets by attraction forces of the first and second magnets when the duct walls of the first and second ducts are between the first and second magnets.