VESSEL CLOSURE DEVICES, SYSTEMS, AND METHODS

摘要

A vessel closure system is provided that can include a plurality of shape memory anchors configured to close a puncture in a vessel wall. The shape memory anchors can be at least partially disposed within a guide member and can be comprised of materials having shape memory properties. The shape memory anchors can be configured to change from a first configuration suitable for deployment from the guide member and through the vessel wall to a second configuration adapted to resist proximal movement against a distal surface of the vessel wall. The shape memory anchors can be coupled to at least one suture. The vessel closure system can also include a plurality of carriers having a distal end and a proximal end. The carriers can be disposed at least partially within the guide member. Each of the carrier members can be configured to deploy at least one of the shape memory anchors from the guide member.

主权项

1. A vessel closure system, comprising:
a guide member having a proximal end, a distal end, a plurality of openings through a wall of the guide member adjacent the distal end of the guide member, and a plurality of carrier lumens extending between the proximal end and the distal end of the guide member to connect to the openings adjacent the distal end of the guide member, the carrier lumens including axially aligned portions and curved portions extending between the axially aligned portions and the openings; a plurality of shape memory anchors, each having a sharpened distal end and each being at least partially disposed within one of the plurality of carrier lumens of the guide member, the shape memory anchors comprising shape memory material having a shape memory effect and being configured to move between a first configuration, wherein the shape memory anchors are adapted to pierce a vessel wall with the sharpened distal end, and a second configuration, wherein the shape memory anchors include a plurality of multi-directional folds that are adapted to resist proximal movement when the shape memory anchors are deployed in the vessel wall; at least one suture element coupled to each of the shape memory anchors; and a plurality of carriers disposed at least partially within the carrier lumens of the guide member, each carrier being detachably coupled to one of the shape memory anchors and adapted to move between a retracted position in which the carrier is substantially straightened at least partially within the carrier lumen and an extended position in which the carrier and shape memory anchor at least partially extend through one of the openings radially and distally away from the guide member.