| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electrode catheter configured such that the entire surface of a tip electrode having a spherical portion of a diameter equal to or greater than the outer diameter of a catheter shaft can be irrigated with a fluid from the rear-end side. <P>SOLUTION: The electrode catheter is provided with the catheter shaft 10 having a lumen 11 serving as a pathway for a fluid, and the tip electrode 20 which is connected to the tip side of the shaft 10 and has the spherical portion 21 of the diameter equal to or greater than the outer diameter of the shaft 10, the shaft 10 having a tip-end reduced diameter section 10A where the diameter reduces in a tapered fashion toward the tip direction, a plurality of irrigation holes 112 for irrigating the surface of the tip electrode 20 with the fluid being arranged at the tip-end reduced diameter section 10A, and a plurality of tilted lumens 111 extending in the tip direction and reaching each of the irrigation holes 112 while also tilting radially outward of the shaft 10 being formed on the interior of the tip-end reduced diameter section 10A of the shaft 10. <P>COPYRIGHT: (C)2013,JPO&INPIT |
