SYSTEMS AND METHODS FOR IMPROVED VESSEL ACCESS CLOSURE

摘要

Embodiments are described for closing vascular access ports, such as arteriotomies, which involve placement and deployment of an expandable device configured to prevent blood flow across a subject arteriotomy while also keeping disturbance of intravascular flow to a minimum. Suitable prostheses may comprise one or more frames constructed from lengths of flexible materials, such as shape memory alloys or polymers. Such frames may be coupled to sheetlike or tube-like structures configured to spread loads, minimize thrombosis which may be related to intravascular flow, and maintain hemostasis.

主权项

1. A delivery system for closing a hole in a vessel, comprising:
a deployable closure device; an outer sheath having a distal end and a proximal end, wherein said distal end has a retractable hook; and an elongate foot member having a deflectable foot coupled to the deployable closure device, wherein the outer sheath is in coaxial arrangement with respect to the elongate foot member, further wherein at least one tether couples the deployable closure device to the elongate foot member.