| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an atrium ablation catheter provided with an electrode forming a linear lesion part that does not contaminate the catheter, and to provide a method for medical treatment of atrial fibrillation. <P>SOLUTION: The ablation catheter (10) has a tubular catheter body (12). An unwithdrawable ablation assembly (15) is attached to the distal terminal section of the catheter body (12) and has a proximal nonconductive pipe (42), a distal nonconductive pipe (40), and the tubular electrode (38). The tubular electrode is made of a shape memory material and has at least one affusion port (39) which makes a fluid flow out from the inside of the electrode (38). The ablation assembly also has a nonconductive protective pipe (52) extended in parallel with the electrode (38) as a whole along the outside of the tubular electrode. The nonconductive protective pipe has proximal and distal end sections respectively extended into the proximal and distal nonconductive pipes. <P>COPYRIGHT: (C)2004,JPO |
