[Problems] The low-order along the invasive incision insert been attempted a non-metallized and medical retractor scissors type which is lighter to minimize the risk of damage by allowing the X-ray transmission to the soft tissue provide. A is the intersection portion of the handle portion 2 with an operating hand 6 made of metal to form a finger hook hole 6a essential 7 that allows cross angle change of the pair of operating the hand 6 is provided. While that is the main 7 fixed seat 8 is formed at the site across the, polymerization seat 9 at the base in the composite material made of arm 5 of So-nai insert portion 1 which extends the main 7 in the border in the opposite direction of the finger hole 6a is It is formed. Each the front end portion of the composite made arms 5 Shokusetsu fingers 4 made same type composite material is formed, to an operation to reduce the crossing angle of the operating hand 6 in a state that polymerization seat 9 is fixed to the fixing seat 8 Accordingly, the lock mechanism 10 for preventing the natural variation of the crossing angle of the operating hand 6 when Shokusetsu finger 4 is spaced a desired amount is provided in the handle part 2.BACKGROUND.【課題】X線透過を可能にして軟組織への損傷リスクを最小限にする低侵襲性に沿うべく切開創挿入部は非金属化が図られかつ軽量化させた鋏タイプの医療用開創器を提供する。【解決手段】指掛け穴6aを形成した金属製の操作手6を備えるハンドル部2の交差部位には一対の操作手6の交差角変化を可能にする要7が設けられる。その要7を挟む部位には固定座8が形成される一方、要7を境にして指掛け穴6aの反対方向へ延びる創内インサート部1の複合材製アーム5における基部には重合座9が形成される。各複合材製アーム5の先端部には同種複合材製の触接指4が形成され、固定座8に重合座9が固定された状態で操作手6の交差角を少なくする操作をすることにより、触接指4が所望量離隔したとき操作手6の交差角の自然変化を阻止するロック機構10がハンドル部2に設けられる。【選択図】図1
