Adjustable endolumenal mitral valve ring
First Claim
1. An implantable apparatus for reshaping a mitral valve annulus surrounding a mitral valve, comprising:
- an implant body comprising a plurality of struts having a proximal end, a distal end and a central lumen extending therethrough, the implant body configured to;
compress to a first configuration during delivery into a left atrium of a heart,expand to a second configuration larger than the first configuration, the second configuration for engaging tissue surrounding a mitral valve; and
contract to a third configuration smaller than the second configuration but larger than the first configuration, the third configuration diameter being sufficiently small to reduce mitral regurgitation when implanted in the left atrium;
a plurality of distally facing anchors on the distal end of the body, configured to embed into tissue in a vicinity of the mitral valve annulus and surrounding the mitral valve;
wherein adjacent pairs of struts join at an angle to form an apex, and a moveable restraint surrounding the adjacent pair of struts can be adjusted to change the angle and contract the implant body to the third configuration.
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Accused Products
Abstract
Excessive dilation of the annulus of a mitral valve may lead to regurgitation of blood during ventricular contraction. This regurgitation may lead to a reduction in cardiac output. Disclosed are systems and methods relating to an implant configured for reshaping a mitral valve. The implant comprises a plurality of struts with anchors for tissue engagement. The implant is compressible to a first, reduced diameter for transluminal navigation and delivery to the left atrium of a heart. The implant may then expand to a second, enlarged diameter to embed its anchors to the tissue surrounding and/or including the mitral valve. The implant may then contract to a third, intermediate diameter, pulling the tissue radially inwardly, thereby reducing the mitral valve and lessening any of the associated symptoms including mitral regurgitation.
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Citations
17 Claims
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1. An implantable apparatus for reshaping a mitral valve annulus surrounding a mitral valve, comprising:
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an implant body comprising a plurality of struts having a proximal end, a distal end and a central lumen extending therethrough, the implant body configured to; compress to a first configuration during delivery into a left atrium of a heart, expand to a second configuration larger than the first configuration, the second configuration for engaging tissue surrounding a mitral valve; and contract to a third configuration smaller than the second configuration but larger than the first configuration, the third configuration diameter being sufficiently small to reduce mitral regurgitation when implanted in the left atrium; a plurality of distally facing anchors on the distal end of the body, configured to embed into tissue in a vicinity of the mitral valve annulus and surrounding the mitral valve; wherein adjacent pairs of struts join at an angle to form an apex, and a moveable restraint surrounding the adjacent pair of struts can be adjusted to change the angle and contract the implant body to the third configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification