| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a catheter which fits different sizes of ostia. <P>SOLUTION: The catheter 10 includes an elongated body 12, a shape-memory member defining a generally circular form, and a control handle 16 adapted to actuate a deflection puller wire for deflecting a portion of the elongated body, and a contraction wire for contracting the generally circular form. The generally circular form which carries at least one ring electrode has an off-edge configuration relative to the elongated body such that a longitudinal axis of the elongated body does not intersect the circumference of the circular form and the generally circular form spirals about the longitudinal axis of the elongated body. Moreover, the circular form can have an on-axis configuration such that the longitudinal axis of the elongated body is axially aligned with a central longitudinal axis of the circular form, or an off-axis configuration such that these axes are axially offset from each other. <P>COPYRIGHT: (C)2013,JPO&INPIT |
