The present invention can finely rotate the nose portion of the wire cord by using the rotation force transmission structure of the gear engagement system to precisely locate the nose portion of the wire cord with respect to the polyp, thereby improving operability and greatly shortening the polyp removal operation time .The medical snare apparatus according to the present invention includes a wire cord 200 provided with a snare portion 240 for capturing and removing body tissue at the distal end portion and forward, The medical snare device is connected to a rear end of a cord 200 and has an operating part 100 for operating a wire cord 200. The operating part 100 includes an operating part body 110, And a support shaft 125 having a rectangular cross-sectional structure connected to an end of the wire cord 200 is connected to the end portion of the operation unit body 110, A handle 130 provided with an angle display unit 131 having a plurality of graduations displayed on the peripheral surface of the upper side of the upper side and a handle 130 for transmitting the rotational force of the handle 130 to the support shaft 125, And a gear unit 150 having third and fourth gear members 155 and 157 arranged in a direction orthogonal to the first and second gear members 155 and 155. The third gear member 155 is coupled to the lower side of the handle 130, The fourth gear member 157 is provided with a through hole 154a having a rectangular cross section through which the support shaft 125 is inserted and the outer diameter of the fourth gear member 157 is larger than that of the third gear member 152 And is formed larger than the outer diameter.본 발명은 기어 치합방식의 회전력 전달구조를 이용하여 와이어코드의 올가미부를 세밀하게 회전시켜 용종에 대한 와이어코드의 올가미부가 정확하게 위치할 수 있도록 함으로써, 조작성이 향상되고 용종 제거작업 시간을 대폭 단축시킬 수 있도록 한다.본 발명에 따른 의료용 스네어장치는, 선단부에 신체 조직의 포획 및 절제를 행하기 위해 올가미부(240)가 마련되고 튜브(210) 내에서 전,후진 및 회전 동작되는 와이어코드(200)와, 와이어코드(200)의 후단부에 연결되어 와이어코드(200)의 조작을 위한 조작부(100)를 갖는 의료용 스네어장치에 있어서, 상기 조작부(100)는 조작부 몸체(110)와,
