| abstract |
treatment catheter member with wrap-around function. a catheter member (1) for interacting with a circumferential tissue structure (10) includes an elongated primary catheter (70) having an interior lumen (80) and extending along a longitudinal axis (90) and having a portion. of distal end (100), first (120) and second (130) elongated secondary catheters each comprising a distal end portion (140, 150) and an inner lumen (160, 170), and each to be disposed in the inner lumen ( 80) of the primary catheter (40) to be relatively movable therein and be able to be exposed from the distal end portion thereof, and a first bending mechanism (191) for providing the distal end portion (140, 150) of the first (120) and/or second (130) secondary catheter with a tendency to assume a first secondary folded shape, wherein the distal end portion of one or both of the first and second secondary catheters is provided so as to be able to be flexed by the first mechanism of bending to form an arm portion (126, 136) substantially transverse to the direction of the longitudinal axis (90) of the primary catheter (70) so as to assume the first secondary bent shape when being exposed from the distal end portion. (100) of the primary catheter. |