| 摘要 |
PURPOSE:To surely cutting-remove the mucous of a desired region by installing a projection which can be sticked into the body space mucous, at a part of a snare loop. CONSTITUTION:The snare loop 21 of a high frequency snare 20 has a half moon shape, and a rivet 22 as projection is installed at the top edge part. Since a wire for forming the snare loop 21 is made of stainless steel in the ordinary case, the metal rivet 22 is installed at the top edge of the half moon shaped snare loop 4a in the conventional through soldering or welding. Since the high frequency snare 20 has the rivet 22 at a part of the snare loop 21, the rivet 22 is stuck into the mucous on the periphery, for a small focus (polyp) 24 in a degree of bulging-out, and the focus 24 can be surely held from the root, i.e., the desired region of the focus 24 in a proper area can be held by the snare loop 21. As the material for the rivet 22, is preferably used the metal such as tungsten and molybdenum which possesses the larger electric resistance than that of stainless steel (austenite) as the material for the conventional loop part. |
