Prosthetic heart valve devices, prosthetic mitral valves and associated systems and methods
First Claim
1. A prosthetic heart valve device for treating a native heart valve having a native annulus and native leaflets, comprising:
- a valve support having an upstream region and a downstream region relative to a blood flow direction through a native heart valve of a human heart, the upstream region being configured to support a prosthetic valve, the prosthetic valve having a plurality of leaflets and having an undeformed shape in which the leaflets coapt sufficiently to prevent backflow through the prosthetic valve; and
an anchoring member arranged around a circumference of the valve support and including a connection structure and a fixation portion, the connection structure having an inner end connected to the downstream region of the valve support, an outer end connected to the fixation portion, and an intermediate portion between the inner end and the outer end which flares outwardly from the valve support in a transverse direction relative to the blood flow direction, the fixation portion having an outwardly-facing engagement surface configured to engage tissue at an implant site on or below a native annulus of the native heart valve, the engagement surface extending in a longitudinal direction different than the transverse direction of the connection structure, and the fixation portion having a first cross-sectional shape in an unbiased condition and being deformable into a second cross-sectional shape to adapt to a shape of the tissue at the implant site in a deployed state, wherein the fixation portion of the anchoring member is configured to exert a radially outward force against the native valve annulus that prevents the device from moving in an upstream direction;
wherein the fixation portion of the anchoring member is mechanically isolated from the upstream region of the valve support such that the upstream region of the valve support maintains the undeformed shape if the anchoring member has deformed into the second cross-sectional shape;
wherein the fixation portion comprises a skirt covering an inward-facing surface thereof and the valve support includes a tubular valve cover extending around the valve support, the skirt being attached to the valve cover so as to inhibit blood flow therebetween; and
wherein the valve support comprises a first cylinder and the fixation portion comprises a second cylinder having a larger diameter than the first cylinder in the expanded configuration.
2 Assignments
0 Petitions
Accused Products
Abstract
Devices and methods for implantation at a native mitral valve having a non-circular annulus and leaflets. One embodiment of the device includes a valve support having a first region configured to be attached to a prosthetic valve with a plurality of prosthetic leaflets and a second region. The device can further include an anchoring member having a longitudinal dimension and including a first portion configured to contact tissue at the non-circular annulus, a second portion configured to be attached to the valve support, and a lateral portion between the first portion and the second portion. The second portion of the anchoring member is attached to the second region of the valve support while in a low-profile configuration in which the anchoring member and the valve support are configured to pass through vasculature of a human. The lateral portion is transverse to the longitudinal dimension. The anchoring member and the valve support are configured to move from the low-profile configuration to an expanded configuration in which the first portion of the anchoring member at least partially adapts to the non-circular annulus of the native mitral valve and the first region of the valve support is spaced inwardly from the first portion of the anchoring member relative to the longitudinal dimension of the anchoring member such that a shape of the first region of the valve support is at least partially independent of a shape of the first portion of the anchoring member.
855 Citations
11 Claims
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1. A prosthetic heart valve device for treating a native heart valve having a native annulus and native leaflets, comprising:
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a valve support having an upstream region and a downstream region relative to a blood flow direction through a native heart valve of a human heart, the upstream region being configured to support a prosthetic valve, the prosthetic valve having a plurality of leaflets and having an undeformed shape in which the leaflets coapt sufficiently to prevent backflow through the prosthetic valve; and an anchoring member arranged around a circumference of the valve support and including a connection structure and a fixation portion, the connection structure having an inner end connected to the downstream region of the valve support, an outer end connected to the fixation portion, and an intermediate portion between the inner end and the outer end which flares outwardly from the valve support in a transverse direction relative to the blood flow direction, the fixation portion having an outwardly-facing engagement surface configured to engage tissue at an implant site on or below a native annulus of the native heart valve, the engagement surface extending in a longitudinal direction different than the transverse direction of the connection structure, and the fixation portion having a first cross-sectional shape in an unbiased condition and being deformable into a second cross-sectional shape to adapt to a shape of the tissue at the implant site in a deployed state, wherein the fixation portion of the anchoring member is configured to exert a radially outward force against the native valve annulus that prevents the device from moving in an upstream direction; wherein the fixation portion of the anchoring member is mechanically isolated from the upstream region of the valve support such that the upstream region of the valve support maintains the undeformed shape if the anchoring member has deformed into the second cross-sectional shape; wherein the fixation portion comprises a skirt covering an inward-facing surface thereof and the valve support includes a tubular valve cover extending around the valve support, the skirt being attached to the valve cover so as to inhibit blood flow therebetween; and wherein the valve support comprises a first cylinder and the fixation portion comprises a second cylinder having a larger diameter than the first cylinder in the expanded configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification