PROBLEM TO BE SOLVED: To provide a placement clip within a living body capable of easily increasing a contact area of a fluorescent material to a lumen organ inner wall, and allowing easily visual recognition of emission of the fluorescent material from the outside of the lumen organ.SOLUTION: A placement clip within a living body 1 comprises a clip body 2 comprising: a pair of arm plate parts 22 which are opened into an almost V-shape by resilience； a pawl part 23 formed on a tip part of each arm plate part 22； a fastening ring 24 attached to the arm plate parts 22 movably along a longitudinal direction of the pair of arm plate parts 22, the fastening ring being moved in a direction of the pawl parts 23 for closing the pair of arm plate parts 22. To the arm plate part 22, a fluorescent material 3 is coupled so as to swing freely, the fluorescent material including a fluorescent dye for emitting red light or near infrared light by radiation of excitation ray.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2020,JPO&INPIT【課題】管腔臓器内壁への蛍光体の接触面積を増大させることが容易であり、管腔臓器の外側から蛍光体の発光を視認しやすい生体内留置クリップを提供すること。【解決手段】弾力で略Ｖ字状に開脚する一対のアーム板部２２と、アーム板部２２の各先端部に形成してある爪部２３と、一対のアーム板部２２の長手方向に沿って移動可能にアーム板部２２に取り付けられ、爪部２３の方向に移動させることにより、一対のアーム板２２部を閉脚させる締め付けリング２４と、を持つクリップ本体２を有する生体内留置クリップ１である。アーム板部２２に、励起光の照射により赤色ないし近赤外光を発光する蛍光色素を含む蛍光体３が首振り移動自在に連結してある。【選択図】図１
