| 摘要 |
PROBLEM TO BE SOLVED: To provide a catheter capable of stably preparing a vasoconstriction model close to an actual stenosis while suppressing invasiveness to an animal.SOLUTION: A catheter includes: a catheter body 110 to be inserted to a blood vessel; a balloon 120 provided on an outer peripheral surface of a distal portion of the catheter body 110, to be expanded in a centrifugal direction of the catheter body 110 and abutted to a blood vessel inner wall when a pressurized fluid is put in; and a high frequency energizing electrode 130 provided on an outer surface of the balloon 120, for energizing a high frequency current to the blood vessel inner wall. Thus, just by expanding the balloon 120 of the catheter 100 inserted to a portion to form a stenosis and pressing the high frequency energizing electrode 130 which outputs the high frequency current to the blood vessel inner wall, a damage for inducing a thrombus can be given to the blood vessel inner wall. Further, since decline of an electrode temperature due to blood flow is prevented, the degree of the damage to be given to the blood vessel inner wall can be easily controlled according to the output degree of the current. |
