| 摘要 |
The present invention provides a deflectable catheter whose puller member connections are accomplished with minimal, if any, surface deformation which could otherwise accelerate breakage under tension. The catheter includes a molded member that encases an end of a puller member to enable connection of the end to a fixed or movable structure in the control handle without significant surface deformation in the puller member. The molded member is of a thermoplastic material that encases a preformed end of the puller member, which may be a puller wire or a high modulus fiber material. The molded member may be configured as desired, for example, as a screw that is fastened to a structure in the control handle. Alternatively, the preformed end of the puller member, for example, a puller wire, can be directly connected to and jointly encased in the molded member with another preformed end of a second puller member, for example, a high modulus fiber material. Such a connected puller member whose distal portion is the puller wire and whose proximal portion is the high modulus fiber material can be well suited for control handle that employs pulleys for increased throw capacity.
|
