As for topic of this invention, the blood vessel which is while organizing by the fact that blood style sounds are heard in the thoracoscope or under intraperitoneal mirror operating, there are times when the operation instrument which can grasp position is offered. One side of the tubular component it introduces the end into internal, in order to close 1st opening of the tubular component, by the fact that it makes organization contact, collection sound it is done by the cone component which provides the microphone for the acute section where it can prepare for 1st opening of the tubular component the sound which is while organizing and the organization to which the tubular component the point contacted on the one hand. By the fact that the specialist hears the sound which collection sound is done, it can use hearing in place of tactual sense in the thoracoscope or under intraperitoneal mirror operating. Namely, when position of the blood vessel which is while organizing is grasped, if one side of the tubular component by the fact that the point is made to contact organization, there is a blood vessel in the vicinity of the part where it contacted, blood style sounds of the blood vessel which is while organizing make collection sound. By the fact that the blood style sounds which collection sound are done are examined, as for the specialist it is possible to grasp the position of the blood vessel. Namely, the blood vessel which has been buried in the fat being, it is possible to grasp position accurately.本発明の課題は、胸腔鏡又は腹腔鏡手術下において、血流音を聞くことで組織内の血管を位置を把握することができる手術器具を提供することにある。筒状部材の一方端部を体内に導入し、筒状部材の第1開口を塞ぐように組織に接触させることで、筒状部材の一方先端が接触した組織及び組織内の音が筒状部材の第1開口に備えられる先鋭部にマイクロホンを備えたコーン部材によって集音される。集音された音を術者が聞くことで、胸腔鏡又は腹腔鏡手術下において、触覚の代わりに聴覚を使用することができる。すなわち、組織内の血管の位置を把握する場合、筒状部材の一方先端を組織に接触させることで、接触した部分の近傍に血管があれば、組織内にある血管の血流音が集音される。集音された血流音を聴診することで、術者は血管の位置を把握することができる。すなわち、脂肪に埋まっている血管であっても位置を正確に把握することができる。
