Adjustable endolumenal implant for reshaping the mitral valve annulus
First Claim
1. An implant for reshaping a heart valve annulus, comprising:
- a tubular body having a proximal end, a distal end, a central lumen and a longitudinal axis extending therethrough, the tubular body dimensioned for positioning within an atrium and attachment to tissue surrounding the heart valve;
the tubular body comprising at least a first pair of adjacent struts joined at a proximally facing apex, and at least a second pair of adjacent struts joined at a distally facing apex;
a plurality of distally facing anchors on the distal end of the tubular body, the anchors configured to embed into tissue surrounding the heart valve;
a moveable restraint carried by the tubular body and configured to at least partially surround the first pair of adjacent struts, wherein the moveable restraint is axially movable relative to the proximally facing apex along the first pair of adjacent struts toward the distal end to decrease an angle between the first pair of adjacent struts; and
a rotatable threaded member secured with the proximally facing apex, the rotatable threaded member extending through the moveable restraint, wherein rotation of the rotatable threaded member causes the moveable restraint to move axially along the first pair of adjacent struts.
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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
16 Claims
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1. An implant for reshaping a heart valve annulus, comprising:
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a tubular body having a proximal end, a distal end, a central lumen and a longitudinal axis extending therethrough, the tubular body dimensioned for positioning within an atrium and attachment to tissue surrounding the heart valve; the tubular body comprising at least a first pair of adjacent struts joined at a proximally facing apex, and at least a second pair of adjacent struts joined at a distally facing apex; a plurality of distally facing anchors on the distal end of the tubular body, the anchors configured to embed into tissue surrounding the heart valve; a moveable restraint carried by the tubular body and configured to at least partially surround the first pair of adjacent struts, wherein the moveable restraint is axially movable relative to the proximally facing apex along the first pair of adjacent struts toward the distal end to decrease an angle between the first pair of adjacent struts; and a rotatable threaded member secured with the proximally facing apex, the rotatable threaded member extending through the moveable restraint, wherein rotation of the rotatable threaded member causes the moveable restraint to move axially along the first pair of adjacent struts. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification