Apparatus and methods for implanting a replacement heart valve
First Claim
1. A system for replacing a native heart valve, the system comprising:
- an expansible helical anchor having at least three coils in an unconstrained state, wherein a first coil of the helical anchor has a first diameter in the unconstrained state, and is expandable to a second diameter larger than the first diameter upon application of radial outward force from within the first coil, and wherein the first coil is configured such that it can encircle native leaflets of the native heart valve while a second coil does not encircle the native leaflets; and
an expansible heart valve prosthesis capable of being delivered into the helical anchor and expanded inside the first coil to move the first coil from the first diameter to the second diameter while trapping at least a portion of the native leaflets between the first coil and the heart valve prosthesis.
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0 Petitions
Accused Products
Abstract
Systems and methods for docking a heart valve prosthesis. A system includes a helical anchor (30) formed as multiple coils (32) adapted to support a heart valve prosthesis (10) with coil portions (32) positioned above and below the heart valve annulus (12). A seal (50) is coupled with the helical anchor (30) and includes portions extending between adjacent coils (32) for preventing blood leakage through the helical anchor (30) and past the heart valve prosthesis (10). An expansible helical anchor (30) is formed as multiple coils (32) adapted to support a heart valve prosthesis (10). At least one of the coils (32) is normally being at a first diameter, and is expandable to a second, larger diameter upon application of radial outward force from within the helical anchor (30).
83 Citations
35 Claims
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1. A system for replacing a native heart valve, the system comprising:
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an expansible helical anchor having at least three coils in an unconstrained state, wherein a first coil of the helical anchor has a first diameter in the unconstrained state, and is expandable to a second diameter larger than the first diameter upon application of radial outward force from within the first coil, and wherein the first coil is configured such that it can encircle native leaflets of the native heart valve while a second coil does not encircle the native leaflets; and an expansible heart valve prosthesis capable of being delivered into the helical anchor and expanded inside the first coil to move the first coil from the first diameter to the second diameter while trapping at least a portion of the native leaflets between the first coil and the heart valve prosthesis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A system for replacing a native heart valve, comprising:
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a helical anchor having at least three coils in a relaxed state, the helical anchor being implantable at the native heart valve such that a first coil portion is positioned above a heart valve annulus and a second coil portion is positioned below the heart valve annulus such that it encircles native leaflets of the native heart valve, wherein, in the relaxed state, the first coil portion of the coils has a first radius of curvature that is different from a second radius of curvature of the second coil portion; a cover disposed over at least some of the helical anchor and including a portion extending between at least two adjacent coils; and a prosthetic heart valve capable of being positioned inside the helical anchor at the native heart valve and expanded inside the helical anchor such that at least a portion of native leaflets of the native heart valve are trapped between the helical anchor and the prosthetic heart valve. - View Dependent Claims (28, 29, 30, 31, 32, 33)
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34. A system for replacing a native heart valve, the system comprising:
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an anchor comprising; a plurality of middle region coils in a relaxed state; an upper coil extending from an upper end of the plurality of middle region coils; a lower coil extending from a lower end of the plurality of middle region coils; wherein, in the relaxed state, at least one of the plurality of middle coils has a first diameter and the lower coil has a second diameter that is greater than the first diameter; and wherein, upon application of an outward radial force, the first diameter expands to a third diameter; and a radially expanding replacement heart valve configured to be inserted within the plurality of middle coils; wherein the upper coil is configured to remain in the atrium, and the lower coil is configured to encircle the mitral valve leaflets and the chordae in the left ventricle. - View Dependent Claims (35)
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Specification