Subintimal recanalization catheter assembly to re-open the blood vessels there is a closed portion into the lumen. The catheter assembly, between the hub assembly, and a catheter shaft including an inner tubular member and an outer tubular member extending from the hub assembly in the distal direction, the expanded configuration and the contracted configuration by longitudinal movement relative to the outer tubular member of the inner tubular member in and is configured to be driven, and an expandable structure that is attached to the distal portion of the catheter shaft. The catheter assembly is then advanced into the subintimal space between adjacent tissue layers of the wall of the blood vessel, the distal end side of a blood vessel occlusion the penetrating member through and organized layer distally out from the lumen of the inner tubular member It is constituted by advancing into the lumen to facilitate re-entry into the blood vessel lumen.管腔内に閉塞部がある血管を再開通させる内膜下再開通カテーテルアセンブリ。カテーテルアセンブリは、ハブアセンブリと、ハブアセンブリから先端方向に延在する内側管状部材および外側管状部材を含むカテーテルシャフトと、内側管状部材の外側管状部材に対する長手方向移動により収縮形態と拡張形態との間で駆動されるように構成された、カテーテルシャフトの先端部分に取り付けられた拡張可能構造体とを含む。カテーテルアセンブリは、血管の壁の隣接する組織層の間の内膜下空間に前進して、貫通部材を内側管状部材の内腔から出て先端方向にかつ組織層を通して閉塞部の先端側の血管管腔内に前進させることにより血管管腔内への再入を容易にするように構成される。
