IP Library › Granted Patent US 12,648,848
Granted Patent B2
US 12,648,848 · App. 17/861,024 · Granted Jun 9, 2026

Expansion and locking mechanism for mechanically expandable valves

Inventor: Haim Yushtein (Netanya, IL)
Assignee: Edwards Lifesciences Corporation
A61F2/243A61F2/2418A61F2220/0091
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Quick Facts
Patent No.
US 12,648,848
App. No.
17/861,024
Granted
Jun 9, 2026
Kind
B2
Abstract

An implantable prosthetic device can include a radially expandable and compressible frame including an inflow end portion and an outflow end portion. The frame including a plurality of struts, and at least one expansion and locking mechanism having a first member, a second member extending at least partially into the first member, and a third member. The third member can include an engagement portion. The plurality of struts can include a first strut and a second strut pivotably coupled to one another to form an apex, the first strut having a first flange and the second strut having a second flange. When the frame is expanded, distal advancement of the third member can position the engagement member between the first and second flanges such that they engage the engagement member to resist pivoting of the first and second struts relative to one another to resist compression of the frame.

Claims (37)

1 . An implantable prosthetic device, comprising:

a frame movable between a radially compressed and a radially expanded configuration, the frame comprising an inflow end portion and an outflow end portion, the frame comprising a plurality of struts;

at least one expansion and locking mechanism comprising:

a first member coupled to the frame at a first location,

a second member coupled to the frame at a second location spaced apart from the first location, the second member extending at least partially into the first member,

a third member having a first end portion and a second end portion, the first end portion extending at least partially into the first member and the second end portion comprising an engagement portion;

wherein the plurality of struts includes a first strut and a second strut pivotably coupled to one another to form an apex, the first strut comprising a first flange and the second strut comprising a second flange, and

wherein, when the frame is in the expanded configuration, advancement of the third member in a distal direction positions the engagement portion between the first and second flanges such that the first and second flanges engage the engagement member to resist pivoting of the first and second struts relative to one another in a first direction to resist radial compression of the frame.

2 . The implantable device of claim 1 , wherein the first, second, and third members are axially movable relative to each other.

3 . The implantable device of claim 1 , wherein the first and second struts are pivotably coupled at an apex positioned at the inflow end portion of the frame.

4 . The implantable device of claim 1 , wherein the first and second flanges extend radially inward toward a longitudinal axis of the frame.

5 . The implantable device of claim 1 , wherein expansion of the prosthetic device causes the first and second flanges to pivot away from one another to define a gap between them.

6 . The implantable device of claim 1 , wherein the engagement portion comprises a base portion and an apical portion, and wherein a thickness of the engagement portion tapers from a first thickness at the base portion to a second thickness at the apical portion, the first thickness being greater than the second thickness.

7 . The implantable device of claim 1 , wherein the engagement portion comprises a shoulder configured to selectively abut a distal edge portion of the second member to prevent movement of the third member in a proximal direction past a predetermined point.

8 . The implantable device of claim 1 , wherein the first member comprises a recess extending proximally from a distal edge of the first member.

9 . The implantable device of claim 8 , wherein the second member comprises a fastener extending from a surface of the second member, and wherein the fastener is configured to selectively abut a proximal edge of the recess to resist movement of the second member in a proximal direction.

10 . The implantable device of claim 1 , wherein the second member comprises a biasing member movable between a compressed position and an extended position, and wherein movement of the biasing member from the compressed position to the extended position advances the third member distally.

11 . The implantable device of claim 1 , wherein the first flange comprises a first axial portion having a first length, wherein the second flange comprises a second axial portion having a second length, and wherein the second length is greater than the first length.

12 . The implantable device of claim 1 , wherein the first flange comprises a first radial portion having a first length, wherein the second flange comprises a second radial portion having a second length, and wherein the second length is greater than the first length.

13 . An assembly, comprising:

a prosthetic heart valve comprising

a frame movable between a radially compressed and a radially expanded configuration, the frame comprising an inflow end portion and an outflow end portion, the frame comprising a first strut and a second strut comprising a first flange and a second flange respectively,

at least one expansion and locking mechanism comprising a first member coupled to the frame at a first location, a second member coupled to the frame at a second location spaced apart from the first location, the second member extending at least partially into the first member, and a third member comprising an engagement portion;

a delivery apparatus comprising

a handle,

a first actuation member extending from the handle and releasably coupled to the first member, the first actuation member configured to apply a distally directed force to the first member,

a second actuation member extending from the handle and releasably coupled to the second member, the second actuation member configured to apply a proximally directed force to the second member,

a third actuation member extending from the handle and releasably coupled to the third member,

wherein the prosthetic heart valve is radially expandable from the radially compressed configuration to the radially expanded configuration upon application of at least one of the distally directed force and the proximally directed force to the prosthetic heart valve via the first and second actuation members, respectively; and

wherein when the prosthetic heart valve is in the radially expanded configuration the engagement portion of the third member selectively engages the first and second flanges to prevent compression of the frame.

14 . The assembly of claim 13 , wherein expansion of the prosthetic valve causes the first and second flanges to pivot away from one another to define a gap between them.

15 . The assembly of claim 14 , wherein the third actuation member is configured to apply a distally directed force to the third member to advance the engagement portion into the gap.

16 . The assembly of claim 14 , wherein the third member comprises a biasing portion movable between a compressed configuration and an extended configuration, and wherein movement of the biasing portion from the compressed configuration to the extended configuration advances the engagement portion into the gap.

17 . The assembly of claim 13 , wherein an outflow end portion of the first member comprises a threaded engagement portion configured to releasably couple a correspondingly threaded portion of the first actuation member.

18 . The assembly of claim 13 , wherein an outflow end portion of the second member comprises one or more cutouts configured to releasably couple the second actuation member.

19 . The assembly of claim 18 , wherein the second actuation member comprises one or more flexible elongated elements each having a shape corresponding to a shape of a respective cutout, wherein each of the one or more flexible elongated elements is biased radially outwardly.

20 . The assembly of claim 13 , wherein an outflow end portion of the third member comprises an inner bore having a threaded engagement portion configured to releasably couple the third actuation member.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 16, 2022
From: YUSHTEIN, HAIM
To: EDWARDS LIFESCIENCES CORPORATION
Reel/Frame 060527/0230 →
Continuity (3)
Continuation PCTUS2021012615 · Jan 8, 2021
Provisional Application 62961043 · Jan 14, 2020
Related Publication 20220338978A1 · Oct 27, 2022
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