Compact prosthetic heart valve device

Patent metadata

Field	Value
Publication number	US-2021322155-A1
Application number	US-202016853851-A
Country	US
Kind code	A1
Filing date	Apr 21, 2020
Priority date	Apr 21, 2020
Publication date	Oct 21, 2021
Grant date	—

Abstract

The devices and methods of this disclosure relate to a heart valve prosthesis that is configured to be implanted within a native heart valve having a smaller perimeter annuli with a generally elliptical shape.

First claim

What is claimed is:

1 . A heart valve prosthesis, comprising:
a valve support having an upstream segment and a downstream segment relative to blood flow through a native heart valve of a human heart,
the upstream segment configured to support a prosthetic valve component therein and defining an inflow end of the valve support having a first outer diameter, and
the downstream segment defining an outflow end of the valve support having a second outer diameter that is greater than the first outer diameter; and
an anchor element that surrounds the valve support,
the anchor element having a plurality of connectors forming a downstream portion thereof that are angled inward toward the valve support and are attached to the outflow end of the valve support, and
the anchor element being spaced from the upstream segment of the valve support to mechanically isolate the upstream segment of the valve support from the anchor element.

2 . The heart valve prosthesis of claim 1 , wherein the first outer diameter of the upstream segment is constant from a first end of the upstream segment, which defines the inflow end of the valve support, to a second end of the upstream segment.

3 . The heart valve prosthesis of claim 2 , wherein the second end of the upstream segment is adjacent a first end of the downstream segment, such that the first end of the downstream segment has the first outer diameter and a second end of the downstream segment, which defines the outflow end of the valve support, has the second outer diameter.

4 . The heart valve prosthesis of claim 2 , wherein the downstream segment is flared outwardly from a first end to a second end thereof, with the first end of the downstream segment having the first outer diameter and the second end of the downstream segment, which defines the outflow end of the valve support, having the second outer diameter.

5 . The heart valve prosthesis of claim 1 , wherein the upstream segment tapers from a first end of the upstream segment, which defines the inflow end of the valve support, having the first outer diameter to a second end of the upstream segment having a third outer diameter that is smaller than the first and second outer diameters.

6 . The heart valve prosthesis of claim 5 , wherein the second end of the upstream segment is adjacent a first end of the downstream segment, such that the first end of the downstream segment has the third outer diameter, the downstream segment being flared outwardly from the first end to a second end thereof, with the second end of the downstream segment, which defines the outflow end of the valve support, having the second outer diameter.

7 . The heart valve prosthesis of claim 1 , wherein the anchor element includes a tissue fixation ring that forms an upstream portion thereof that is configured to engage heart tissue at or below a native annulus of the native heart valve.

8 . The heart valve prosthesis of claim 7 , wherein the tissue fixation ring is radially spaced from the upstream segment of the valve support a distance in the undeployed state and is at least partially deformable into a non-circular shape to adapt to a shape of an implantation site in a deployed state, without making contact with the upstream segment of the valve support, to mechanically isolate the upstream segment of the valve support from the anchor element.

9 . The heart valve prosthesis of claim 7 , wherein the plurality of connectors are angled inward from the tissue fixation ring.

10 . The heart valve prosthesis of claim 9 , wherein the plurality of connectors are configured to flex upward, after implantation, to accommodate any radial expansion of the tissue fixation ring due to an increase in size of the native annulus with patient growth.

11 . The heart valve prosthesis of claim 7 , wherein the tissue fixation ring includes one or more cleats that extend outward therefrom to engage the heart tissue.

12 . The heart valve prosthesis of claim 1 , further comprising a prosthetic valve component disposed within the upstream segment of the valve support such that valve leaflets of the prosthetic valve component open into the downstream segment of the valve support during diastole.

13 . The heart valve prosthesis of claim 12 , wherein in an open state during diastole the prosthetic valve component has an effective orifice area greater than about 1.6 cm 2 .

14 . The heart valve prosthesis of claim 1 , wherein the outflow end of the valve support is attached to the plurality of connectors by a plurality of rivets.

15 . The heart valve prosthesis of claim 1 , wherein each of the plurality of connectors has an inwardly curved substantially V-shape.

16 . The heart valve prosthesis of claim 1 , wherein the valve support and the anchor element comprise a frame of the heart valve prosthesis.

17 . The heart valve prosthesis of claim 16 , wherein the valve support of the frame is formed of a stent-like structure having honeycomb-shaped cells and the anchor element is formed of a stent-like structure having closed diamond-shaped cells.

18 . The heart valve prosthesis of claim 16 , wherein each of the valve support and the anchor element of the frame is formed of a stent-like structure having closed diamond-shaped cells.

19 . The heart valve prosthesis of claim 16 , wherein the frame has a first outer diameter at an outflow end of the frame that is about 30 mm and has a second outer diameter at an upstream end of the anchor element that is about 36 mm, whereby the heart valve prosthesis is sized for implantation within a patient having a smaller native mitral valve annulus.

Assignees

• Medtronic Inc

Inventors

• Mcveigh Cahal
• Dueri Jean-Pierre
• Darekar Yogesh A
• Nair Priya
• Rinne Finn O
• Hallak George N
• Mcintire Brenda L
• Howard Elliot J

Classifications

• A61F2/2412

  with soft flexible valve members, e.g. tissue valves shaped like natural valves · CPC title

• A61F2/2409

  Support rings therefor, e.g. for connecting valves to tissue (annuloplasty rings A61F2/2442) · CPC title

• A61F2/24 Primary

  Heart valves {; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body} · CPC title

• A61F2/2442

  Annuloplasty rings or inserts for correcting the valve shape; Implants for improving the function of a native heart valve · CPC title

• A61F2210/0014

  using shape memory or superelastic materials, e.g. nitinol · CPC title