IP Library › Granted Patent US 12,357,462
Granted Patent B2
US 12,357,462 · App. 18/436,102 · Granted Jul 15, 2025

Method and apparatus for transvascular implantation of neo chordae tendinae

Inventors: Gordon B. Bishop (Santa Rosa, CA); Randall T. Lashinski (Windsor, CA); Erik Griswold (Penngrove, CA)
Assignee: Pipeline Medical Technologies, Inc.
A61F2/2457A61F2/2466A61B2017/00243A61B2017/00309A61B17/0401A61B2017/0406A61B2017/0409A61B2017/0417A61B2017/0441A61B2017/0443A61B2017/0464A61B17/0467A61B17/0482A61B2017/0496A61F2210/0014A61F2220/0016A61F2250/0098
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Quick Facts
Patent No.
US 12,357,462
App. No.
18/436,102
Granted
Jul 15, 2025
Kind
B2
Abstract

Methods and devices for transvascular prosthetic chordae tendinea implantation are disclosed. A catheter is advanced into the left atrium, through the mitral valve, and into the left ventricle. A ventricular anchor is deployed from the catheter and into a wall of the left ventricle, leaving a ventricular suture attached to the ventricular anchor and extending proximally through the catheter. A leaflet anchor is deployed to secure a mitral valve leaflet to a leaflet suture, with the leaflet suture extending proximally through the catheter. The leaflet suture is secured to the ventricular suture to limit a range of travel of the leaflet in the direction of the left atrium. Also disclosed is an assembled in situ mitral valve leaflet restraint, having a neo papillary muscle and a neo chordae tendinea.

Claims (20)

1. A neo chordae tendinae deployment system, comprising:

a catheter having a proximal end and a distal end;

a ventricular anchor delivery subsystem configured to be inserted within the catheter, the ventricular anchor delivery system further configured to deploy a ventricular anchor from the distal end of the catheter; and

a leaflet anchor delivery subsystem configured to be inserted within the catheter, the leaflet anchor delivery subsystem having a radially enlargeable leaflet anchor and a suture,

wherein the radially enlargeable leaflet anchor comprises the suture positioned between two sheets of material that are overlapped and joined together with a portion of the suture contained and joined therebetween;

wherein the radially enlargeable leaflet anchor and at least a portion of the suture is configured to extend proximally from the distal end of the catheter,

wherein a transverse axis of the leaflet anchor in a pre-deployed state is shorter than the transverse axis of the leaflet anchor in a deployed state.

2. The neo chordae tendinae deployment system of claim 1 , wherein the leaflet anchor delivery subsystem further comprises a pledget.

3. The neo chordae tendinae deployment system of claim 2 , wherein the suture is threaded through the pledget.

4. The neo chordae tendinae deployment system of claim 2 , wherein the pledget is configured to transform from an elongated strip configuration to a shortened configuration.

5. The neo chordae tendinae deployment system of claim 4 , wherein the pledget is configured to collapse and assume a cross section of the leaflet anchor delivery subsystem by retraction of the suture.

6. The neo chordae tendinae deployment system of claim 1 , wherein the leaflet anchor further comprises a tag bar.

7. The neo chordae tendinae deployment system of claim 6 , wherein the tag bar is T-shaped.

8. The neo chordae tendinae deployment system of claim 6 , wherein the tag bar is rotatably coupled to the suture.

9. The neo chordae tendinae deployment system of claim 6 , wherein the tag bar is configured to radially enlarge the leaflet anchor.

10. The neo chordae tendinae deployment system of claim 1 , wherein the leaflet anchor further comprises a hub secured to the suture.

11. The neo chordae tendinae deployment system of claim 10 , wherein the hub includes a plurality of spokes.

12. The neo chordae tendinae deployment system of claim 11 , wherein the plurality of spokes is configured to deploy radially outward from the hub.

13. The neo chordae tendinae deployment system of claim 11 , wherein the plurality of spokes is configured to radially extend outward from the hub after deployment of the plurality of spokes.

14. The neo chordae tendinae deployment system of claim 11 , wherein the plurality of spokes is configured to align along a longitudinal axis of the leaflet anchor delivery subsystem prior to deployment of the plurality of spokes.

Continuity (5)
Continuation 17153629 · Jan 20, 2021
Continuation 15858671 · Dec 29, 2017
Continuation In Part 15638176 · Jun 29, 2017
Provisional Application 62441031 · Dec 30, 2016
Related Publication 20240173131A1 · May 30, 2024
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