A medical device according to the present invention includes a flexible shaft including a first stenosis portion extending in a longitudinal direction from a distal end to a proximal end and including a first stenosis portion extending to a distal portion, and a first stenosis A braid mounted to cover over the section, wherein the first layer of the braid is distal to the proximal end of the first constriction from the distal end of the braid toward the end of the first layer. And the second layer of the braid is disposed over the first layer from the end of the first layer toward the end of the second layer and proximal to the distal end of the braid. The three layers are disposed proximally over the second layer along the shaft, beyond the proximal end of the stenosis and toward the end of the third layer.本発明に係る医療用装置は、遠位端から近位端まで長軸方向に延在し、かつ遠位部に延在する第１狭窄部を備える可撓性に富むシャフトと、第１狭窄部の上を被覆するように装着された編組体であって、編組体の第１層は編組体の遠位端から第１層の終点に向かって第１狭窄部の近位端の遠位側まで配置され、編組体の第２層は第１層の上を第１層の終点から第２層の終点に向かって編組体の遠位端の近位側まで配置され、編組体の第３層は第２層の上をシャフトに沿って狭窄部の近位端を越えて第３層の終点に向かって近位方向に配置される。
