PROBLEM TO BE SOLVED: To provide a ligation apparatus capable of allowing a user to open and close a clip as desired when performing a ligation operation on biological tissues, so that clipping of tissues can be redone easily.SOLUTION: A ligation apparatus includes: a clip 17 for ligating biological tissues by an arm 15 a clip connection member 23 serially connecting to a clip base end part 19 a clip holding member 27 allowing the clip connection member 23 to insert therethrough an operation wire 33 connected to the clip connection member 23 an inner sheath member 37 having the operation wire 33 disposed therein, for supporting the clip holding member 27 an outer sheath member 39 for covering the outer periphery of the inner sheath member 37, and movable forward and backward and a frist movement regulation part 41 and a second movement regulation part 43 for regulating the movement of the clip holding member 27 with respect to the inner sheath member 37. The outer sheath member 39 moves forward and backward to change the opening of the arm 15. The first movement regulation part 41 regulates the movement of the clip holding member 27 toward the inside. The second movement regulation part 43 regulates the movement of the clip holding member 27 toward the outside.COPYRIGHT: (C)2014,JPO&INPIT【課題】生体組織を結紮操作する際にクリップの開閉動作が自在に行え、組織の掴み直しが簡単な操作により行える結紮装置を得る。【解決手段】アーム部15により生体組織を結紮するクリップ17と、クリップ基端部19に連接するクリップ連結部材23と、クリップ連結部材23を挿通させるクリップ保持部材27と、クリップ連結部材23に接続される操作ワイヤ33と、操作ワイヤ33を内包してクリップ保持部材27を支持する内シース部材37と、内シース部材37の外周を覆って進退自在となる外シース部材39と、クリップ保持部材27の、内シース部材37に対する移動を規制する第一移動規制部41、および第二移動規制部43と、を備えた。外シース部材39は、進退してアーム部15の開度を変更する。第一移動規制部41は、クリップ保持部材27の内側への移動を規制する。第二移動規制部43は、クリップ保持部材27の外側への移動を規制する。【選択図】図2
