The present invention relates to a therapeutic substance delivery device and, more particularly, to a therapeutic substance delivery device for delivering a therapeutic substance to a desired position in a living body vessel, which is characterized in including a therapeutic substance loading portion, a connector connected to the therapeutic substance loading portion, and an air supply and exhaust pipe connected to the connector. The therapeutic substance loading portion includes a main body having a concave portion, an elastic film, and a connecting pipe. The connector includes a joint main body, a flange portion fixed to the other end side of the joint main body, and a fixing nut into which the joint main body is inserted. The joint main body includes a pipe fixing portion. At least part of an inner wall of the fixing nut is provided with an internal thread.本發明是關於一種治療物質輸送設備，且是一種用於將治療物質輸送到活體管內之所期望的位置的治療物質輸送設備，其特徵在於具備：治療物質載置部、連接於前述治療物質載置部的連接器、及連接於前述連接器的送排氣管，前述治療物質載置部具有形成有凹部的本體部、彈性膜及連接管，前述連接器具備接頭本體、固定在前述接頭本體的另一端部側之凸緣部、以及插通有前述接頭本體的固定用螺帽，前述接頭本體具備管道固定部，且前述固定用螺帽的內壁之至少一部分具備內螺紋。
