| 摘要 |
An electrode catheter is provided with a catheter shaft (10) having a lumen (11) serving as a pathway for a fluid, and a tip electrode (20) which is connected to the tip side of the shaft (10) and has a spherical portion (21) of a 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 openings (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). According to this electrode catheter, the entire surface of the tip electrode having the spherical portion of a diameter equal to or greater than the outer diameter of the catheter shaft can be irrigated with the fluid from the rear-end side. |
