PROBLEM TO BE SOLVED: To provide a medical appliance capable of locally administering a cell in a transvascular manner toward target tissue.SOLUTION: A medical appliance for being indwelled in a blood vessel includes a hollow needle part that is pierced through a peripheral wall of the blood vessel within the blood vessel so as to communicate the inside and outside of the blood vessel with each other, and an embolization part that is arranged on the downstream side in the extension direction of the blood vessel with respect to the hollow needle part within the blood vessel and brought into contact with a body fluid within the blood vessel so as to embolize the blood vessel.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2019,JPO&INPIT【課題】細胞を経血管的に標的組織に向けて局所的に投与可能な医療器具を提供する。【解決手段】脈管内に留置される医療器具であって、前記脈管内で前記脈管の周壁を刺通し、前記脈管の内外を連通する中空針部と、前記脈管内で前記中空針部よりも前記脈管の延在方向の下流側に配置され、前記脈管内で前記体液と触れることで前記脈管を塞栓する塞栓部と、を備える。【選択図】図3
