Catheter Structure with Improved Support and Related Systems, Methods, and Devices

摘要

Certain embodiments herein relate to an extension catheter for positioning through a conventional guiding catheter into the vasculature of a patient, the extension catheter having a distal tubular member and a proximal elongated shaft coupled to the distal tubular member, wherein the proximal shaft has a length or section containing at least one discontinuous or segmented structure, and further wherein such structures that can be modified or varied to modify the torsional compliance characteristics of the device. Further embodiments relate to a multi-layer catheter having a protective wrap at or near the distal end of the catheter.

主权项

1. A catheter comprising:
(a) a distal tube comprising a tubular wall and a tube lumen defined within the tube by the tubular wall; (b) a support membrane disposed around a portion of the distal tube; and (c) a proximal shaft operably coupled to a proximal portion of the distal tube, the proximal shaft comprising:
(i) a first elongate member;(ii) a second elongate member; and(iii) a first sheath segment disposed around a first length of the first and second elongate members such that the first length of the first and second elongate members is disposed within the first sheath segment,wherein the first and second elongate members are configured to extend distally into a portion of the distal tube.