PROBLEM TO BE SOLVED: To provide a medical tool which simplifies operation considerably and is small in the number of components.SOLUTION: A medical tool comprises: an outer pipe 11 inserted into the body； a core material 12 inserted so that the outer pipe 11 can move forward and backward； a medical tool body 2 which is fitted to a part projected from the outer pipe 11 of the core material 12 and is given a prescribed driving force； and a cylindrical housing member 6 which is fitted to an end of the outer pipe 11 and where an end housing the medical tool body 2 opens when inserted into the body. When by moving the outer pipe 11 relatively forward with respect to the core material 12, the housing member 6 is approximated to the medical tool body 2 taken out of the housing member 6 at a target part in the body again, the driving force is operated to the medical tool body 2 by the housing member 6.SELECTED DRAWING: Figure 1【課題】操作が飛躍的に簡単になり、かつ、部品点数も少ない医療具を提供する。【解決手段】体内に挿入される外管１１と、該外管１１内を進退可能に挿通する芯材１２と、該芯材１２の外管１１から突出した部位に取り付けられて、所定の駆動力を与えられることにより動作する医療具本体２と、前記外管１１の先端に取り付けられて体内への挿入時には前記医療具本体２を収容する先端が開口した筒状の収容部材６とを具備した医療具であって、前記外管１１を芯材１２に対して相対的に前進させることにより、前記収容部材６を体内の目的箇所において収容部材６から出された医療具本体２に向かって再接近させると、該収容部材６によって前記駆動力が医療具本体２に作用するように構成した。【選択図】図１
