Cardiac valve repair devices configured for percutaneous delivery
First Claim
1. A device for improving function of a cardiac valve, comprising:
- a frame configured to fit within a cardiac valve, the frame comprising an annular body having a first end, a second end, and an opening extending therebetween; and
wherein the frame comprises a pair of tissue penetrating members extending from the first end of the frame, each tissue penetrating member comprising an end portion having a sharp penetrating surface configured to pierce valvular tissue,wherein the frame is collapsible to a first position and expandable to a second position;
wherein in the first position, the pair of tissue penetrating members are positioned such that their respective penetrating surfaces abut one another to form a blunt end; and
wherein in the second position, the pair of tissue penetrating members are spaced apart such that their respective penetrating surfaces are exposed.
1 Assignment
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Accused Products
Abstract
Disclosed herein are devices for improving coaption of the mitral valve leaflets to reduce or eliminate mitral valve regurgitation. The devices may be used to perform mitral valve annuloplasty, or to serve as a docking station for a transcatheter prosthetic heart valve. The various embodiments of devices are configured for percutaneous and, in some cases, transvascular delivery. Delivery systems useful for routing the devices to the mitral valve are also disclosed, including catheters, balloons and/or mechanical expansion systems. The devices themselves include at least one tissue penetrating member. Methods of delivery include partially embedding the devices in the mitral valve annulus via at least one tissue penetrating member. Tissue penetrating members may be embedded into the tissue in a simultaneous or a nearly simultaneous fashion. Upon embedding, the devices employ various expansion and/or contraction features to adjust the mitral valve diameter. Adjustments may continue until the leaflets fully coapt and the problem of mitral regurgitation is reduced or eliminated.
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Citations
24 Claims
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1. A device for improving function of a cardiac valve, comprising:
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a frame configured to fit within a cardiac valve, the frame comprising an annular body having a first end, a second end, and an opening extending therebetween; and wherein the frame comprises a pair of tissue penetrating members extending from the first end of the frame, each tissue penetrating member comprising an end portion having a sharp penetrating surface configured to pierce valvular tissue, wherein the frame is collapsible to a first position and expandable to a second position; wherein in the first position, the pair of tissue penetrating members are positioned such that their respective penetrating surfaces abut one another to form a blunt end; and wherein in the second position, the pair of tissue penetrating members are spaced apart such that their respective penetrating surfaces are exposed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of percutaneous cardiac valve repair, the method comprising:
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providing a transcatheter delivery system comprising; a catheter; an elongate balloon mounted along a distal end portion of the catheter, wherein the elongate balloon comprises an inflated state and an uninflated state, and wherein the elongate balloon comprises, in the inflated state, a first portion with a first diameter and a second portion with a second diameter larger than the first diameter; and a frame surrounding at least a portion of the elongate balloon and comprising an annular body having a first end and a second end; wherein when the elongate balloon is in the uninflated state, the frame is in a corresponding collapsed state, and when the elongate balloon is in the inflated state, the frame is expanded to an expanded state; wherein the frame comprises a pair of tissue penetrating members extending from the first end of the annular body of the frame, each tissue penetrating member comprising a sharp penetrating surface configured to pierce valvular tissue; wherein when the frame is in the collapsed state, the pair of tissue penetrating members are positioned relative to each other such that their penetrating surfaces abut one another to form a blunt end; wherein when the frame is in the expanded state, the pair of tissue penetrating members are spaced apart such that their penetrating surfaces are exposed; navigating the elongate balloon in the uninflated state and the frame in the collapsed state through the cardiovascular system of a subject via the catheter; positioning the elongate balloon and the frame within a cardiac valve of the subject; moving a gas or liquid through the catheter and into the elongate balloon, wherein said moving causes the elongate balloon to expand to the inflated state and the frame to expand to the expanded state, which causes the penetrating surfaces of the tissue penetrating members to move apart from each other; applying force to the catheter in a manner that causes the penetrating surfaces of the tissue penetrating member of the frame to penetrate the valvular tissue of the subject; deflating the elongate balloon such that the frame remains attached to the valvular tissue; and removing the catheter and elongate balloon from the subject. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification