| 摘要 |
The present invention relates to a catheter for angiography adapted to be used simultaneously with a catheter introducing guide wire and advanced into a blood vessel under the pilot action of the guide wire, and is characterized in that in order to secure smooth and reliable remote controllability (i.e., torque controllability) from the hand side, a high degree of flexibility precisely reflecting the movement of the guide wire and an injecting function for accurately directing a contrast agent into a target artery, the catheter is designed so that, although the catheter has, as a whole, a degree of flexiblity to enable it to follow the movement of the guide wire, its main portion in the region to be introduced into a blood vessel has a higher degree of flexibility than that of its front end portion which is shorter than the main portion.
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