PROBLEM TO BE SOLVED: To provide a bipolar needle type microwave surgical instrument utilizing microwaves and having excellent hemostasis and coagulation performance at a deep part of a living tissue.SOLUTION: The bipolar needle type microwave surgical instrument having a tip being a coaxial cable, includes a center conductor 1 for transmitting microwaves, an insulator 2, and an external conductor 3. A cylindrical tip having a conical tip 5 (hereinafter referred to as a tip) is installed at the tip part to which the central conductor is connected, the tip 5 has a maximum diameter part of 1.6-2.7 mm, the length of the tip including the cylindrical part is 5-22 mm, and an acute angle of the cone is 38-42 degrees. An object can be coagulated to a depth of 2-22 mm by applying microwaves.COPYRIGHT: (C)2011,JPO&INPIT【課題】双極性の針型マイクロ波手術器であって、マイクロ波を利用し、生体組織の深部において止血、凝固能に優れたマイクロ波手術器を提供する。【解決手段】2極式の針型マイクロ波手術器であって、該手術器の先端部が、同軸ケーブルであるマイクロ波伝送用中心導体1、絶縁体2、及び外部導体3を含む構造からなり、該中心導体が繋がる先端部に先端が円錐状の円柱型の先端具5(以下先端具という)が設置され、該先端具5は最大直径部1.6~2.7mm、円柱状の部分を含めた長さが5~22mm、円錐の鋭角度は38~42度であり、マイクロ波の印加によって、対象物の2~22mmの深さまで凝固が可能であるマイクロ波手術器。【選択図】図2
