BALLOON CATHETER AND DEVICE FOR INJECTING MEDICAL TREATMENT METHOD

摘要

A balloon catheter for insertion into a blood vessel allowing medical fluid to effectively reach a target position through a tube without invading those portions other than affected parts, and a device for injecting medical treatment method, the catheter comprising four axially extended rumens formed in one catheter body (1) and two balloons (2, 3) disposed parallel with each other in an axial direction, the plurality of rumens further comprising a filling rumen (5) communicating with a filling port (11) between the two balloons (2, 3), balloon rumens (6, 7) allowed to communicate with the insides of the two balloons to dilate the balloons (2, 3), and a guide rumen (4) commonly used as a bypass rumen which is allowed to communicate with the outside of the catheter body (1) at positions distal from and proximal to the position of the group of the two balloon (2, 3) at the tip part (1a) of the catheter body (1) to bypass a closed space formed by the two balloons (2, 3) so as to allow blood to flow therethrough.