PROBLEM TO BE SOLVED: To provide an implant unlikely to cause reduction of strength due to fatigue when repeated stress is applied in a tearing direction from a living tissue.SOLUTION: An implant comprises: a vessel 10 configured expansively deformable by introduction of a filling material which is a fluid at the introduction and hardens after the introduction to express elasticity, the vessel being indwelled in a living body in an expansively deformed state and a reinforced portion 20 which extends in a lumen 10a of the vessel and has a tearing strength larger than that of the hardened filling material. The reinforced portion is formed of an expansion member which is placed in the vessel in a contracted state before the vessel expands, and which maintains an expanded state after the vessel expands.COPYRIGHT: (C)2015,JPO&INPIT【課題】生体組織から引裂方向に繰り返し応力を受けた場合に、疲労による強度低下が生じにくいインプラントを提供する。【解決手段】注入時には流動性を備え注入後には硬化して弾性を発現する充填材の注入によって拡張変形可能に構成され、拡張変形した状態で生体内に留置される容器10と、容器の内腔10aに延在し、硬化した充填材よりも大きな引裂強さを備える補強部20と、を有し、補強部は、容器が拡張する前は容器内に収縮された状態で配置され、容器が拡張した後は拡張した状態を維持する拡張部材によって構成されている。【選択図】図1
