CATHETER

摘要

[PROBLEMS] To provide a catheter that in the introduction of its distal end portion through a main biological canal, such as the ascending aorta, into a subsidiary biological canal, such as any of coronary arteries, can attain a backup improvement and a further lowering of the possibility of burden on coronary artery exits or operational trouble. [MEANS FOR SOLVING PROBLEMS] The configuration of second curve (11) of distal end portion (5) in an indwelling state consists of a configuration curved so as to, from the exit of left coronary artery (L) through the wall portion of ascending aorta (U) opposite thereto, run along the wall, or is constructed so that the configuration of the second curve (11) of the distal end portion (5) in a natural state is curved three-dimensionally so as to realize the above curved configuration.