PROBLEM TO BE SOLVED: To provide an instrument for extracting only a limited member including a holding member for locking a fixing pin to be driven in a human body element such as a bone.SOLUTION: The extraction instrument of a fixing pin to be driven in a human body element openably/closably connects a second lever arm 2 to be held by hand to a head that constitutes a tip end of a first lever arm 1 to be similarly held by hand, with a connecting pin 3 forms, at a tip end of the head, a vertical groove 6, and a first horizontal hole 7 longitudinally penetrating through the head, with it orthogonally crossing with the vertical groove rotationally connects a first link to the tip end of the second lever arm with a first pin rotationally connecting a second link to the tip end of the first link to insert the second link into the vertical groove, with a margin formed in the rearward retracts the second link, while tilting it rearward in the vertical groove and repeats advancement/retraction, with the fixing pin held with a corner of the hole, so as to remove the pin.SELECTED DRAWING: Figure 5COPYRIGHT: (C)2019,JPO&INPIT【課題】骨等の人体要素に打ち込む固定用ピンをロックする保持部材を含む限られた部材のみを後退させる器具を提供する。【解決手段】人体要素に打ち込む固定用ピンの引き抜き具であり、手で握る第一レバーアーム1の先端を構成するヘッドに同じく手で握る第二レバーアーム2を連結ピン3で開閉可能に連結し、ヘッドの先端に縦溝6と、縦溝に直交してヘッドを前後に貫通する第一横孔7を形成し、第二レバーアームの先端に第一リンクを第一ピンで回動可能に連結するとともに、第一リンクの先端に第二リンクを第二ピンで回動可能に連結して第二リンクを縦溝に後方に余裕をもたせて挿入する他、第二リンクが縦溝中で後傾しながら後退し、孔の角で固定用ピンを咥えて引き抜く態様の前進と後退を繰り返してピンを引き抜く。【選択図】図5
