Prosthetic heart valves and methods for use

Patent metadata

Field	Value
Publication number	US-2026033947-A1
Application number	US-202519352334-A
Country	US
Kind code	A1
Filing date	Oct 7, 2025
Priority date	Apr 13, 2023
Publication date	Feb 5, 2026
Grant date	—

Abstract

Prosthetic valves are provided, e.g., for replacing a mitral or aortic valve of a patient, that includes an annular valve body including an inlet end, an outlet end, and one or more valve members for selectively opening and closing a passage between the inlet and outlet ends, a sewing cuff attached around an outer perimeter of the valve body, and a flexible skirt removably attached around the outer perimeter adjacent the sewing cuff. The prosthetic valve may be introduced into a patient's body, positioned adjacent a valve annulus, and the sewing cuff may be secured around a perimeter of the valve annulus. The skirt may be secured to tissue adjacent the valve annulus to further seal the prosthetic valve around the valve annulus, or the skirt may be removed from the valve body, e.g., if the annulus is sufficiently sealed by the sewing cuff.

First claim

1 . A prosthetic valve, comprising:
an annular valve body including an inlet end, an outlet end, and one or more valve members for selectively opening and closing a passage between the inlet and outlet ends; a sewing cuff attached around an outer perimeter of the valve body; and a flexible skirt removably attached around the outer perimeter of the valve body adjacent the sewing cuff.

2 . The prosthetic valve of claim 1 , wherein an inner edge of the skirt is attached around the outer perimeter by one or more sutures, the one or more sutures allowing the skirt to be separated from the valve body.

3 . The prosthetic valve of claim 2 , wherein the one or more sutures comprise a suture threaded in and out of the skirt material around the inner edge such that the suture may be cut to create a loose end that may be pulled to unthread or remove the suture from around the inner edge and release skirt from the valve body.

4 . The prosthetic valve of claim 2 , wherein the one or more sutures comprise a suture threaded in and out of the skirt material around the inner edge with opposite ends of the suture tied together by a knot such that the knot may be untied to allow one of the opposite ends to be pulled to unthread the suture from around the inner edge and release skirt from the valve body.

5 . The prosthetic valve of claim 1 , wherein the skirt comprises one or both of fabric or polyester.

6 . (canceled)

7 . The prosthetic valve of claim 1 , wherein the skirt comprises a collapsed configuration to minimize interference with visualizing and/or securing the sewing cuff to a native valve annulus, the skirt expandable to contact tissue adjacent the native valve annulus to allow the skirt to be secured to tissue adjacent the native valve annulus.

8 . The prosthetic valve of claim 1 , wherein the skirt extends radially outwardly from the valve body.

9 . The prosthetic valve of claim 8 , wherein the skirt extends diagonally outwardly from the valve body.

10 . The prosthetic valve of claim 8 , wherein an outer edge of the skirt has a substantially uniform diameter.

11 . The prosthetic valve of claim 8 , wherein the skirt has a length between the inner edge and an outer edge of the skirt that is variable around the outer perimeter.

12 . The prosthetic valve of claim 8 , wherein skirt defines a plane extending radially outwardly from the valve body to an outer edge of the skirt.

13 . The prosthetic valve of claim 12 , wherein an outer edge of the skirt has a substantially uniform diameter.

14 . The prosthetic valve of claim 12 , wherein the skirt has a length between the inner edge and an outer edge of the skirt that is variable around the outer perimeter.

15 . The prosthetic valve of claim 1 , wherein the sewing cuff is attached around the outer perimeter at an intermediate location between the inlet and outlet ends, and the inner edge of the skirt is offset from the sewing cuff closer to one of the inlet and outlet ends.

16 . The prosthetic valve of claim 15 , wherein the inner edge of the skirt is secured adjacent the inlet end of the valve body.

17 . The prosthetic valve of claim 15 , wherein the inner edge of the skirt is secured adjacent the outlet end of the valve body.

18 . The prosthetic valve of claim 1 , wherein the valve body comprises an annulus from a tissue xenograft and the one or more valve members comprise tissue leaflets of the xenograft.

19 . The prosthetic valve of claim 1 , wherein the valve body comprises a non-tissue frame carrying the one or more valve members.

20 . The prosthetic valve of claim 17 , wherein the valve body comprises a mechanical valve.

21 . A method for implanting a prosthetic valve comprising an annular valve body including an inlet end, an outlet end, and one or more valve members for selectively opening and closing a passage between the inlet and outlet ends, a sewing cuff attached around an outer perimeter of the valve body, and a flexible skirt removably attached around the outer perimeter of the valve body adjacent the sewing cuff, the method comprising:
introducing the prosthetic valve into a patient's body adjacent a valve annulus; securing the sewing cuff around a perimeter of the valve annulus; and either: a) securing the skirt to tissue adjacent the valve annulus to further seal the prosthetic valve around the valve annulus; or b) removing the skirt from the valve body.

22 - 30 . (canceled)

Assignees

• Univ Leland Stanford Junior

Inventors

• Zhu Yuanjia
• Woo Y Joseph

Classifications

• A61L2430/20

  for reconstruction of the heart, e.g. heart valves · CPC title

• A61F2220/0075

  sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable · CPC title

• A61F2220/0008

  Fixation appliances for connecting prostheses to the body · CPC title

• A61L27/3604

  characterised by the human or animal origin of the biological material, e.g. hair, fascia, fish scales, silk, shellac, pericardium, pleura, renal tissue, amniotic membrane, parenchymal tissue, fetal tissue, muscle tissue, fat tissue, enamel · CPC title

• A61L27/18

  obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds · CPC title