PROBLEM TO BE SOLVED: To provide an implant placement tool and an implant capable of easily placing an implant at a damaged site with minimal invasiveness. SOLUTION: An implantable body indwelling tool 10 has a tube member 12 having a sharp puncture portion 14 formed at a tip thereof capable of puncturing a subcutaneous tissue 92 and having a through hole 12a extending in the axial direction, and a through hole 12a. It is made of a material that has a locking portion 26 formed to have a diameter substantially the same as the inner diameter and a main body portion 28 extending like a thread from the locking portion 26, and has an ability to promote tissue regeneration by adhering cells. The embedded body 20 is provided with a moving mechanism 18 which is connected to the proximal end side of the pipe member 12 and allows the liquid 30 to flow through the through hole 12a to move the embedded body 20 through the through hole of the pipe member 12. .. [Selection diagram] Fig. 3【課題】低侵襲で簡便に埋込体を損傷部位に留置できる埋込体留置具及び埋込体を提供する。【解決手段】埋込体留置具１０は、先端に皮下組織９２に穿刺可能な鋭利な穿刺部１４が形成され、内部に軸方向に延びる貫通孔１２ａを有する管部材１２と、貫通孔１２ａの内径と略同じ径に形成された係止部２６と、係止部２６から糸状に延び出た本体部２８と、を有し、細胞が付着することで組織再生を促す能力を有する材料で形成された埋込体２０と、管部材１２の基端側に接続されて貫通孔１２ａに液体３０を流通させて埋込体２０を管部材１２の貫通孔で移動させる移動機構１８と、を備える。【選択図】図３
