Prosthesis for atraumatically grasping intralumenal tissue and methods of delivery
First Claim
1. A method for deploying a self-expanding replacement mitral valve prosthesis within a native mitral valve having a native mitral valve annulus, the method comprising:
- advancing the self-expanding replacement mitral valve prosthesis into a heart in a radially compacted state, the self-expanding replacement mitral valve prosthesis comprising;
an expandable frame comprising an atrial end and a ventricular end and having a longitudinal axis extending between the atrial end and the ventricular end, the expandable frame configured to radially expand and contract for deployment within the native mitral valve, wherein when the expandable frame is in an expanded configuration, the expandable frame having a larger cross-sectional dimension in a middle portion of the expandable frame and a smaller cross-sectional dimension in a proximal portion and a distal portion of the expandable frame, the middle portion being between the proximal portion and the distal portion; and
a plurality of generally longitudinal struts extending from the atrial end, each of the plurality of longitudinal struts comprising a mushroom-shaped tab;
a plurality of ventricular anchors having ends positioned distal the middle portion, each of the plurality of ventricular anchors extending from a base attached to the expandable frame generally distally before extending generally proximally and radially outwardly from the expandable frame, wherein each of the plurality of ventricular anchors is connected to the expandable frame at the base with a single strut which splits into two struts which connect at the end of the struts to form an atraumatic end;
a first fabric portion covering at least a portion of the ventricular end;
a plurality of second fabric portions each covering at least a portion of each of the plurality of ventricular anchors;
expanding the self-expanding replacement mitral valve prosthesis to an expanded configuration; and
positioning the ventricular anchors so that at least some of the ventricular anchors are located between chordae tendineae;
wherein after the positioning, the ventricular end is located in a left ventricle, the atrial end is located in a left atrium, and the plurality of ventricular anchors are located on a ventricular side of the native mitral valve annulus.
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Accused Products
Abstract
A prosthesis can comprise an expandable frame, a plurality of distal anchors and a plurality of proximal anchors. The anchors can extend outwardly from the frame. The frame can be configured to radially expand and contract for deployment within a body cavity. The frame and anchors can have one of many different shapes and configurations. For example, when the frame is in an expanded configuration, the frame can have a larger cross-sectional dimension in a middle portion of the frame and a smaller cross-sectional dimension in a proximal portion and a distal portion of the frame, wherein the middle portion is between the proximal and distal portions. As another example, the anchors can have looped ends, the entire anchor may loop out from the frame.
512 Citations
20 Claims
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1. A method for deploying a self-expanding replacement mitral valve prosthesis within a native mitral valve having a native mitral valve annulus, the method comprising:
advancing the self-expanding replacement mitral valve prosthesis into a heart in a radially compacted state, the self-expanding replacement mitral valve prosthesis comprising; an expandable frame comprising an atrial end and a ventricular end and having a longitudinal axis extending between the atrial end and the ventricular end, the expandable frame configured to radially expand and contract for deployment within the native mitral valve, wherein when the expandable frame is in an expanded configuration, the expandable frame having a larger cross-sectional dimension in a middle portion of the expandable frame and a smaller cross-sectional dimension in a proximal portion and a distal portion of the expandable frame, the middle portion being between the proximal portion and the distal portion; and a plurality of generally longitudinal struts extending from the atrial end, each of the plurality of longitudinal struts comprising a mushroom-shaped tab; a plurality of ventricular anchors having ends positioned distal the middle portion, each of the plurality of ventricular anchors extending from a base attached to the expandable frame generally distally before extending generally proximally and radially outwardly from the expandable frame, wherein each of the plurality of ventricular anchors is connected to the expandable frame at the base with a single strut which splits into two struts which connect at the end of the struts to form an atraumatic end; a first fabric portion covering at least a portion of the ventricular end; a plurality of second fabric portions each covering at least a portion of each of the plurality of ventricular anchors; expanding the self-expanding replacement mitral valve prosthesis to an expanded configuration; and positioning the ventricular anchors so that at least some of the ventricular anchors are located between chordae tendineae; wherein after the positioning, the ventricular end is located in a left ventricle, the atrial end is located in a left atrium, and the plurality of ventricular anchors are located on a ventricular side of the native mitral valve annulus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
Specification