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US 11,304,797 B2Granted
Replacement heart valve methods
AssigneeMitral Valve Technologies Sarl
InventorsPaul A. Spence, Landon H. Tompkins, Mark Chau, Alexander J. Siegel
Life of this patent
Estimating the term…
Abstract
Methods for replacing a native heart valve. An anchor comprises coils adapted to support a heart valve prosthesis. The anchor is positioned at a native heart valve. An expansible heart valve prosthesis is delivered into the anchor and expanded inside the coils. This moves at least one coil from a first diameter to a second, larger diameter while securing the anchor and the heart valve prosthesis relative to each other. The heart valve prosthesis comprises a seal on the expansible heart valve prosthesis. Additional apparatus and methods are disclosed.
Claims21
A method of implanting an expansible heart valve prosthesis in a heart of a patient, comprising:
- delivering an expansible helical anchor in the form of multiple coils proximate a native heart valve with the expansible helical anchor in a deployed but unexpanded state;
- positioning the expansible heart valve prosthesis within the multiple coils of the expansible helical anchor with the expansible heart valve prosthesis and the expansible helical anchor in unexpanded states;
- and
- expanding the expansible heart valve prosthesis against the expansible helical anchor thereby radially expanding the expansible heart valve prosthesis while securing the expansible heart valve prosthesis to the expansible helical anchor;
- wherein a seal is carried on the expansible heart valve prosthesis and extends between at least two adjacent coils of the multiple coils for preventing blood leakage through the expansible helical anchor and past the expansible heart valve prosthesis, wherein the seal includes a region that extends to an outflow end of a stent structure of the expansible heart valve prosthesis.
2 more elements
A method, comprising:
- delivering an anchor to a native heart valve such that at least two coils of the anchor encircle native tissue of the native heart valve, wherein the anchor comprises a layer of foam material over a wire portion;
- positioning an expansible prosthetic heart valve inside the anchor, the prosthetic heart valve comprising a stent structure, leaflets mounted to the stent structure, and a seal structure, wherein the seal structure comprises a seal layer circumscribing the stent structure and a bumper region covering an end edge of an outflow end of the stent structure, the seal structure arranged such that an entirety of the end edge of the outflow end of the stent structure is covered;
- and
- expanding the prosthetic heart valve inside the anchor such that the at least two coils expand to a larger diameter and the native tissue is trapped between the anchor and the prosthetic heart valve.
1 more element
A method, comprising:
- positioning an anchor at a native heart valve such that at least one coil of multiple coils of the anchor surrounds native tissue of the native heart valve;
- and
- expanding a prosthetic heart valve from a compressed configuration to an expanded configuration within the anchor such that a radial outward force inside the anchor causes at least one coil of the multiple coils to expand from a first diameter to a second, larger diameter, and the native tissue is trapped between the at least one coil and the prosthetic heart valve;
- wherein the prosthetic heart valve comprises a stent structure, a valve structure mounted to the stent structure, and a seal structure comprising a seal layer circumscribing the stent structure and a bumper at an outflow end of the stent structure, wherein the stent structure comprises a plurality of apices spaced apart from one another around the outflow end of the stent structure, and wherein the seal structure is arranged such that an end edge of every apex of the plurality of apices of the stent structure at the outflow end of the stent structure is covered by the bumper of the seal structure.
1 more element
A method, comprising;
- delivering an anchor to a native heart valve such that at least two coils of the anchor encircle native tissue of a native heart valve on an outflow side of the native heart valve;
- positioning an expansible prosthetic heart valve inside the anchor, the prosthetic heart valve comprising a stent structure having a plurality of apices at an outflow end thereof, leaflets attached to the stent structure, and a seal structure, wherein the seal structure comprises a region at the outflow end of the stent structure arranged such that an entire end edge of each apex of the plurality of apices at the outflow end of the stent structure is covered;
- and
- expanding the prosthetic heart valve inside the anchor such that the native tissue is trapped between an inner surface of the at least two coils of the anchor and an outer surface of the prosthetic heart valve.
1 more element
Dependencies are inferred from the claim text.