Devices and methods for excluding the left atrial appendage
First Claim
1. A conformable left atrial appendage occlusion device, comprising:
- an expandable tubular body having a compressible open cell foam sidewall, a proximal, occlusive end for facing a left atrium following implantation of the device in a left atrial appendage, a distal end for facing into the left atrial appendage following implantation of the device in the left atrial appendage, and a longitudinal axis extending therethrough, the tubular foam body having a mean diameter in an unconstrained expansion; and
a self-expandable support carried within the expandable tubular body such that the foam sidewall provides a cushion between the support and the wall of the left atrial appendage following implantation, the support comprising a plurality of struts forming a plurality of apexes;
wherein compression of the device from a diameter of about 25 mm to a diameter of about 15 mm along a minor axis transverse to the longitudinal axis causes no more than about a 5 mm reduction in the mean diameter.
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Accused Products
Abstract
Systems, devices and methods for occluding the left atrial appendage (LAA). The device excludes the LAA from blood flow. The implantable device is delivered via transcatheter delivery into the LAA and secured within the LAA. The implant comprises an expandable and compliant frame and an expandable and conformable tubular foam body. A delivery and tether retraction system includes a handle for controlling a pusher and tether. The pusher may be moved a distance away from the implant without changing the orientation of the implant, while the tether is still attached to the implant. Severing the tether and proximally retracting a control on the hand piece by a distance causes the severed end to advance distally by at least about twice that distance. A loader includes a conical portion with guides and a reservoir for submerging the foam prior to loading and delivery.
288 Citations
19 Claims
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1. A conformable left atrial appendage occlusion device, comprising:
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an expandable tubular body having a compressible open cell foam sidewall, a proximal, occlusive end for facing a left atrium following implantation of the device in a left atrial appendage, a distal end for facing into the left atrial appendage following implantation of the device in the left atrial appendage, and a longitudinal axis extending therethrough, the tubular foam body having a mean diameter in an unconstrained expansion; and a self-expandable support carried within the expandable tubular body such that the foam sidewall provides a cushion between the support and the wall of the left atrial appendage following implantation, the support comprising a plurality of struts forming a plurality of apexes; wherein compression of the device from a diameter of about 25 mm to a diameter of about 15 mm along a minor axis transverse to the longitudinal axis causes no more than about a 5 mm reduction in the mean diameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification