| 摘要 |
PROBLEM TO BE SOLVED: To surely insulate an electrically conductive wiring and to accurately obtain a shape of a snare part by constituting a catheter tube of an inner tube wherein a lumen through which a pair of electrically conductive wirings are respectively freely movably inserted to the axial direction is formed and an outer tube covering the outer periphery. SOLUTION: A treating tool for electric operation 10 has a catheter tube and a pair of electrically conductive wirings 18 and 20 are freely movably foreward and backward mounted from its far site end 15. The far site ends are fixed on insulative spacer 22 with an adhesive and are held so as to be mutually insulating condition. These wirings 18 and 20 are made to get into a habit of forming a loop-like snare 24 with the wirings 18 and 20 when they are projected by advancing and moving from the far site end 15 of the catheter tube 12. The catheter tube 12 forms a double tube structure consisting of an outer tube 14 and an inner tube 16 and lumens 26 and 27 for passing each electrically conductive wiring 18 and 20 through are formed in the inner tube 16. |
