Left atrial appendage exclusion device
First Claim
1. A left atrial appendage exclusion device comprising a pair of elongated compression members co-extensive with one another, wherein the members form a closed periphery defining an opening therein when the two ends of the members are brought together.
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Accused Products
Abstract
A device for excluding the inner cavity of the left internal appendage (LAA) from the interior of the left atrium LA may include a pair of compression members spaced apart and defining a closed periphery. The closed periphery has a variable-sized opening therein that can be enlarged to surround the LAA and then closed to compress and exclude the LAA. The closed periphery may be generally rectangular or lenticular, and may be a solid, contiguous periphery or separable at a closure. Inner protrusions or ribs may be provided on the compression members to help anchor the exclusion device in place. Needles may also be provided to pierce the LAA tissue and trap blood clots therein. The device may be non-linear in plan view so as to conform to the shape of the external left atrium. Deployment techniques or structures may be provided that squeeze the LAA in a direction starting adjacent the left atrium and then moving away from the left atrium. This squeezing motion helps prevent extrusion of any thrombus deposit within the LAA cavity into the left atrium.
301 Citations
46 Claims
- 1. A left atrial appendage exclusion device comprising a pair of elongated compression members co-extensive with one another, wherein the members form a closed periphery defining an opening therein when the two ends of the members are brought together.
- 8. A left atrial appendage exclusion device comprising a pair of elongated compression members co-extensive with one another and hinged together at one end, the compression members each further including a mating structure on the end opposite the hinged end that mutually engage with each other to form a closed periphery for the exclusion device.
- 16. A left atrial appendage exclusion device comprising a pair of elongated compression members co-extensive with one another and coupled at both ends to form a closed periphery defining an opening therein, at least one of the compression members having a plurality of piercing members extending into the opening toward the other member for piercing the left atrial appendage and trapping matter therein.
- 22. A left atrial appendage exclusion device comprising a pair of elongated compression members co-extensive with one another and coupled at both ends to form a closed periphery defining an elevational opening therein, the compression members being non-linear in plan view.
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30. A method for excluding the cavity of a left atrial appendage from the interior of the left atrium, comprising:
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providing an exclusion device having a pair of elongated compression members co-extensive with one another and joined together at both ends to form a closed periphery defining an opening therein;
introducing the exclusion device to a location adjacent the left atrial appendage;
manipulating the exclusion device to expand the opening;
advancing the exclusion device such that it surrounds the left atrial appendage without applying compression thereto; and
minimizing the opening such that the compression members contact the exterior of the left atrial appendage and exclude the cavity from the interior of the left atrium. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37)
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38. A method for excluding the cavity of a left atrial appendage from the interior of the left atrium, comprising:
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providing an exclusion device;
introducing the exclusion device to a location adjacent the left atrial appendage;
manipulating the exclusion device to surround the left atrial appendage adjacent to the exterior wall of the left atrium;
applying compression to the left atrial appendage starting from a location adjacent to the exterior wall of the left atrium and moving away from the left atrium to exclude the cavity from the interior of the left atrium while minimizing the extrusion into the left atrium of any existing thrombus within the cavity. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46)
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Specification