| 摘要 |
An electrode catheter is provided with: a catheter shaft (10); a plate spring (65) which is disposed at the distal end flexible portion (10A) of the shaft (10) so as to extend along the center axis of the shaft (10); an irrigation member (20) which is connected to the distal end side of the shaft (10); and a distal end electrode (30). Distal end flow passage-forming lumens (11, 11) are formed in the distal end flexible portion (10A) of the shaft (10) so as to be eccentric from the center axis. In the non-flexible portion of the shaft (10), a center lumen (16) which serves as a liquid flow passage is formed along the center axis. The shaft (10) has disposed therein a flow passage branch member (70) which connects the center lumen (16) and each of the distal end flow passage-forming lumens (11, 11). This electrode catheter is configured so that the electrode catheter has good operability of deflection of the distal end and so that the distal end flexible portion has good planarity in the direction of deflection thereof to enable a sufficient amount of liquid to be irrigated to the surface of the distal end electrode. |
