PROBLEM TO BE SOLVED: To introduce a guide wire into the pericardial cavity while preventing the tip of the guide wire from contacting the heart.SOLUTION: A treatment tool 1 is provided with: an elongated insertion section 3 having a channel 21 that opens at the tip surface and is formed in the lengthwise direction a forceps section 5 provided at the tip of the insertion section 3 and having a pair of grasping parts 41, 42 that can open and close and a puncture needle 6 which is housed movably within the channel 21 and in which a through-hole, into which the guide wire 13 can be inserted, is formed, in the lengthwise direction, to the needle tip surface 6a that is a tip surface thereof. One grasping parts 41 is provided so as to dispose the tip thereof at a position deviated on the base end side from the tip of the other grasping part 42. The puncture needle 6 is provided so as to emerge and recede from the opening at the tip surface of the insertion section 3 into the space S formed between the tips of the pair of grasping parts 41, 42 disposed to be deviated.COPYRIGHT: (C)2012,JPO&INPIT【課題】ガイドワイヤの先端が心臓に接触することを防止しながらガイドワイヤを心膜腔内に導入する。【解決手段】その先端面に開口し長手方向に形成されたチャネル21を有する細長い挿入部3と、該挿入部3の先端に設けられ、開閉可能な一対の把持片41,42を有する鉗子部5と、チャネル21内に移動可能に収納されるとともに、ガイドワイヤ13を挿入可能な貫通孔が長手方向にその先端面である針先面6aまで形成された穿刺針6とを備え、一方の把持片41が、他方の把持片42の先端よりも基端側にずれた位置にその先端を配置可能に設けられ、穿刺針6が、挿入部3の先端面の開口から、ずれて配置された一対の把持片41,42の先端同士の間に形成された空間Sへ出没可能に設けられている処置具1を提供する。【選択図】図3
