IP Library › Granted Patent US 12,636,144
Granted Patent B2
US 12,636,144 · App. 18/404,195 · Granted May 26, 2026

Truncated leaflet for prosthetic heart valves

Inventors: William C. Bruchman (Camp Verde, AZ); Cody L. Hartman (Flagstaff, AZ)
Assignee: Edwards Lifesciences Corporation
A61F2/2409A61F2/24A61F2/2412A61F2/2415A61F2/2418A61F2230/00A61F2230/0023A61F2230/0026A61F2240/001
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Quick Facts
Patent No.
US 12,636,144
App. No.
18/404,195
Granted
May 26, 2026
Kind
B2
Abstract

A prosthetic heart valve can include a frame defining a central longitudinal axis and a plurality of leaflets. Each leaflet can include: a leaflet free edge, a first leaflet side forming a first leaflet side line of attachment along the frame, a second leaflet side forming a second leaflet side line of attachment along the frame, and a leaflet base forming a leaflet base line of attachment along the frame from an end of the first leaflet side line of attachment to an end of the second leaflet side line of attachment. The first leaflet side line of attachment can form a continuous attachment of the first leaflet side to the frame along an entire extent of the first leaflet side. The second leaflet side line of attachment can form a continuous attachment of the second leaflet side to the frame along an entire extent of the second leaflet side.

Claims (54)

1 . A prosthetic heart valve comprising:

a frame being radially collapsible and expandable between a collapsed configuration and an expanded configuration, the frame including an inflow end, an outflow end, and a central longitudinal axis; and

a plurality of leaflets coupled to the frame, each leaflet including:

a leaflet free edge configured to abut an adjacent leaflet free edge when the plurality of leaflets transition from an open position to a closed position to stop fluid flow through the prosthetic heart valve;

a first leaflet side coupled to the frame and forming a diagonally extending, first leaflet side line of attachment along an inner circumferential surface of the frame;

a second leaflet side coupled to the frame and forming a diagonally extending, second leaflet side line of attachment along the inner circumferential surface of the frame; and

a leaflet base coupled to the frame and forming a leaflet base line of attachment along the frame extending from an end of the first leaflet side line of attachment to an end of the second leaflet side line of attachment, the leaflet base line of attachment lying in a plane that is transverse to the central longitudinal axis of the frame,

wherein the first leaflet side line of attachment forms a continuous attachment of the first leaflet side to the frame along an entire extent of the first leaflet side, the first leaflet side line of attachment being configured to remain stationary along the inner circumferential surface of the frame as the plurality of leaflets transition from the open position to the closed position under the influence of a changing pressure differential across the prosthetic heart valve when the prosthetic heart valve is in an implanted state, and

wherein the second leaflet side line of attachment forms a continuous attachment of the second leaflet side to the frame along an entire extent of the second leaflet side, the second leaflet side line of attachment being configured to remain stationary along the inner circumferential surface of the frame as the plurality of leaflets transition from the open position to the closed position under the influence of the changing pressure differential across the prosthetic heart valve when the prosthetic heart valve is in the implanted state.

2 . The prosthetic heart valve of claim 1 , wherein the frame comprises a plurality of frame elements arranged into a plurality of circumferentially-extending rows.

3 . The prosthetic heart valve of claim 1 , wherein the frame comprises a plurality of frame elements arranged to form a plurality of circumferentially-extending rows of cells.

4 . The prosthetic heart valve of claim 1 , wherein the frame comprises a plurality of frame elements arranged to form at least one circumferentially-extending row of cells, wherein an entirety of the perimeter of each cell is defined by frame elements of the plurality of frame elements.

5 . The prosthetic heart valve of claim 1 , wherein the frame comprises a plurality of commissure posts.

6 . The prosthetic heart valve of claim 5 , wherein each one of the plurality of commissure posts is coupled to two adjacent ones of the plurality of leaflets.

7 . The prosthetic heart valve of claim 1 , wherein the frame has a tubular shape.

8 . A prosthetic heart valve comprising:

a frame being radially collapsible and expandable between a collapsed configuration and an expanded configuration, wherein the frame includes:

an inflow end;

an outflow end;

a central longitudinal axis; and

a plurality of struts disposed between the inflow end and the outflow end of the frame, wherein the plurality of struts includes first and second angled struts that are angled relative to the central longitudinal axis, and wherein the plurality of struts define an inner circumferential surface of the frame; and

a plurality of leaflets coupled to the frame, wherein each one of the plurality of leaflets includes:

a leaflet free edge configured to abut an adjacent leaflet free edge when the plurality of leaflets transition from an open position to a closed position to stop fluid flow through the prosthetic heart valve;

a first leaflet side forming a first leaflet side line of attachment, wherein the first leaflet side line of attachment is attached to the first angled strut of the plurality of struts, and wherein the first leaflet side line of attachment is configured to remain stationary along the inner circumferential surface of the frame as the plurality of leaflets transition from the open position to the closed position under the influence of a changing pressure differential across the prosthetic heart valve when the prosthetic heart valve is in an implanted state;

a second leaflet side forming a second leaflet side line of attachment, wherein the second leaflet side line of attachment is attached to the second angled strut of the plurality of struts, and wherein the second leaflet side line of attachment is configured to remain stationary along the inner circumferential surface of the frame as the plurality of leaflets transition from the open position to the closed position under the influence of the changing pressure differential across the prosthetic heart valve when the prosthetic heart valve is in the implanted state; and

a leaflet base forming a leaflet base line of attachment that extends along the frame from an end of the first leaflet side line of attachment to an end of the second leaflet side line of attachment, wherein:

the leaflet base line of attachment is coupled to the frame;

the leaflet base line of attachment lies in a plane that is transverse to the central longitudinal axis of the frame,

the leaflet base comprises an intermediate portion disposed between the first leaflet side line of attachment and the second leaflet side line of attachment, and

the leaflet base is coupled at its intermediate portion to a base element of the frame disposed between the first leaflet side line and the second leaflet side line.

9 . The prosthetic heart valve of claim 8 , wherein each leaflet of the plurality of leaflets includes a central region that is planar when the plurality of leaflets are each in the closed position.

10 . The prosthetic heart valve of claim 9 , wherein the central region does not form a crease when the plurality of leaflets are each in a closed position under unpressurized conditions.

11 . The prosthetic heart valve of claim 8 , wherein, for each leaflet, the first leaflet side and the second leaflet side each define an obtuse angle relative to the leaflet base.

12 . The prosthetic heart valve of claim 11 , wherein the first leaflet side and the second leaflet side diverge in a direction towards the leaflet free edge.

13 . The prosthetic heart valve of claim 8 , wherein each leaflet of the plurality of leaflets comprises a single layer of material whose edges define the leaflet free edge, the first leaflet side, the second leaflet side, and the leaflet base.

14 . The prosthetic heart valve of claim 8 , wherein each of the plurality of leaflets comprises a biological tissue material.

15 . A prosthetic heart valve comprising:

a frame that is radially collapsible and expandable between a collapsed configuration and an expanded configuration, wherein the frame includes:

an inflow end;

an outflow end;

a central longitudinal axis; and

a plurality of leaflets coupled to the frame, wherein each one of the plurality of leaflets includes:

a leaflet free edge configured to abut an adjacent leaflet free edge when the plurality of leaflets transition from an open position to a closed position to stop fluid flow through the prosthetic heart valve;

a first leaflet side coupled to the frame and forming a diagonally extending, first leaflet side line of attachment along an inner circumferential surface of the frame;

a second leaflet side coupled to the frame and forming a diagonally extending, second leaflet side line of attachment along inner circumferential surface of the frame; and

a leaflet base coupled to the frame and forming a leaflet base line of attachment along the frame extending from an end of the first leaflet side line of attachment to an end of the second leaflet side line of attachment, the leaflet base line of attachment lying in a plane that is transverse to the central longitudinal axis of the frame,

wherein each one of the plurality of leaflets is attached to the frame only at the first leaflet side, the second leaflet side, and the leaflet base,

wherein the first leaflet side and the second leaflet side lines of attachment are configured to remain stationary along the inner circumferential surface of the frame as the plurality of leaflets transition from the open position to the closed position under the influence of a changing pressure differential across the prosthetic heart valve when the prosthetic heart valve is in an implanted state, and

wherein the leaflet base comprises an intermediate portion disposed between the first leaflet side line of attachment and the second leaflet side line of attachment, and wherein the leaflet base is coupled at its intermediate portion to a base element of the frame disposed between the first leaflet side line and the second leaflet side line.

16 . The prosthetic heart valve of claim 15 , wherein the frame comprises a plurality of frame elements arranged into a plurality of circumferentially-extending rows.

17 . The prosthetic heart valve of claim 15 , wherein the frame comprises a plurality of frame elements arranged to form a plurality of circumferentially-extending rows of cells.

18 . The prosthetic heart valve of claim 15 , wherein the frame comprises a plurality of commissure posts, and wherein each one of the plurality of commissure posts is coupled to two adjacent ones of the plurality of leaflets.

19 . The prosthetic heart valve of claim 15 , wherein each leaflet of the plurality of leaflets is coupled to an inner surface of the frame.

20 . The prosthetic heart valve of claim 15 , wherein each leaflet of the plurality of leaflets includes a central region that is planar when the plurality of leaflets are each in the closed position.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 4, 2024
From: BRUCHMAN, WILLIAM C.; HARTMAN, CODY L.
To: EDWARDS LIFESCIENCES CORPORATION
Reel/Frame 066206/0194 →
Continuity (5)
Continuation 16440340 · Jun 13, 2019
Continuation 14839334 · Aug 28, 2015
Continuation 13843196 · Mar 15, 2013
Provisional Application 61739721 · Dec 19, 2012
Related Publication 20240180692A1 · Jun 6, 2024
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