Tissue ligation devices and methods therefor
AssigneeSentreHEART, Inc.
InventorsRobert L. CLARK, III, Gregory W. FUNG, Russell PONG, Arnold M. ESCANO, Greg LIU
Life of this patent
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Abstract
Described here are closure devices and methods for ligating tissue, such as the left atrial appendage. The closure devices may comprise a snare loop assembly comprising a snare and a suture loop releasably attached thereto. The snare may be releasable from an elongate body of the closure device. In some instances, the closure device may comprise one or more markers to allow a user to determine whether the snare loop assembly is twisted.
Claims24
A device for closing a target tissue comprising:
- an elongate body;
- a snare loop assembly extending at least partially from the elongate body and forming a loop, wherein the snare loop assembly comprises a snare and a suture loop releasably attached to the snare, wherein the snare comprises a first end and a second end, and wherein advancement of the first end of the snare relative to the elongate body increases the diameter of the loop and wherein retraction of the first end of the snare relative to the elongate body decreases the diameter of the loop;
- a shuttle, wherein the second end of the snare is connected to the shuttle;
- and
- a locking element, wherein the locking element is configured to releasably couple the shuttle to the elongate body and is further configured to release the shuttle from the elongate body.
The device of 10 wherein the locking element comprise a lock wire, and wherein the snare release is configured to retract the lock wire.
A device for closing a target tissue comprising:
- an elongate body;
- a snare loop assembly extending at least partially from the elongate body and forming a loop, wherein the snare loop assembly comprises a snare and a suture loop releasably attached to the snare, wherein the snare comprises a proximal snare portion and a distal snare portion, each comprising an engagement portion, and wherein the engagement portion of the proximal snare portion is configured to releasably engage the engagement portion of the distal snare portion;
- and
- a restraining sheath positioned to maintain engagement of the proximal and distal snare portions.
Dependencies are inferred from the claim text.