Devices, systems, and methods for artificial chordae tendineae

Patent metadata

Field	Value
Publication number	US-11850152-B2
Application number	US-202016919806-A
Country	US
Kind code	B2
Filing date	Jul 2, 2020
Priority date	Jul 3, 2019
Publication date	Dec 26, 2023
Grant date	Dec 26, 2023

Abstract

The present disclosure relates generally to the field of medical devices for treating heart disease. In particular, the present disclosure relates to medical devices, systems, and methods for delivering artificial chordae tendineae in a patient. A system for delivering a chordae tendineae into a heart may include a delivery catheter. A clamp catheter may be configured to translate through the delivery catheter. A spreader may be disposed on the clamp catheter. A first clamp may be at least partially contained in the spreader in a closed configuration and may be attached to the chordae tendineae. An anchor catheter may be configured to translate through the delivery catheter and may have an anchor attached to the chordae tendineae. A sheath may be extended over the anchor catheter and anchor and may be configured to restrain an arm of the anchor.

First claim

What is claimed is:

1. A system for delivering a chordae tendineae into a heart of a patient, the system comprising:
a delivery catheter;
a clamp catheter configured to translate through the delivery catheter;
a spreader disposed on the clamp catheter;
a first clamp at least partially contained in the spreader in a closed configuration, the first clamp being attached to a first end of the chordae tendineae;
an anchor catheter configured to translate through the delivery catheter, the anchor catheter having an anchor attached to a second end of the chordae tendineae; and
a sheath extended over the anchor catheter and anchor, the sheath configured to restrain an arm of the anchor.

2. The system of claim 1 , wherein the second end of the chordae tendineae extends through a ratchet of the anchor and the second end of the chordae tendineae is coupled to a tether extending through the anchor catheter, the tether configured to increase a tension in the chordae tendineae via a translation of the tether.

3. The system of claim 2 , further comprising a release filament that extends through a release roller of the ratchet, the release filament configured to unlock the chordae tendineae from the ratchet via translation of the release filament.

4. The system of claim 1 , wherein the first clamp is reversibly locked to the spreader.

5. The system of claim 1 , further comprising a second clamp attached to the first clamp by a clamp filament, the clamp filament being slidably coupled to the first end of the chordae tendineae.

6. The system of claim 1 , wherein the anchor catheter and sheath extend through the clamp catheter.

7. A method of delivering a chordae tendineae into a heart of a patient, the method comprising:
transluminally inserting a delivery catheter into the heart;
extending a clamp catheter through the delivery catheter, the clamp catheter having a spreader containing a clamp in a closed configuration, the clamp being attached to a first end of the chordae tendineae;
manipulating the spreader to transition the clamp from the closed configuration to an open configuration;
positioning the clamp adjacent a leaflet of a valve of the heart;
manipulating the spreader to transition the clamp from the open configuration to the closed configuration onto the leaflet;
extending a sheath through the delivery catheter towards a tissue of the heart;
extending an anchor catheter having an anchor, the anchor being attached to a second end of the chordae tendineae at a distal end of the anchor catheter through the sheath; and
driving the anchor into the tissue.

8. The method of claim 7 , further comprising observing regurgitation of the valve via transesophageal echocardiogram or fluoroscopy and adjusting a tension in the chordae tendineae.

9. The method of claim 7 , further comprising adjusting a tension in the chordae tendineae by selectively translating the chordae tendineae through a ratchet of the anchor and selectively releasing the chordae tendineae from the ratchet.

10. The method of claim 7 , further comprising deploying the clamp from the spreader by removing a plurality of pins from the clamp and spreader.

11. The method of claim 7 , wherein manipulating the spreader is performed by translating a spreader filament proximally through the clamp catheter.

12. The method of claim 7 , further comprising repositioning the clamp by transitioning the clamp from the closed configuration to the open configuration, moving the clamp from a first portion of the leaflet to a second portion of the leaflet, and transitioning the clamp from the open configuration to the closed configuration onto the leaflet.

13. The method of claim 7 , wherein extending a sheath through the delivery catheter is extended through the clamp catheter.

14. The method of claim 7 , wherein driving the anchor further comprises deploying an arm from the anchor by extending the anchor catheter such that the arm extends at least partially out of a distal end of the sheath.

15. The method of claim 7 , further comprising repositioning the anchor by extending the anchor catheter proximally through the sheath from a first portion of the tissue and extending the anchor catheter to a second portion of the tissue.

16. The method of claim 7 , further comprising removing the clamp catheter, the sheath, the anchor catheter, and the delivery catheter from the patient.

17. A method of delivering a chordae tendineae into a heart of a patient, the method comprising:
delivering a clamp on a clamp spreader to a leaflet of a heart valve, the clamp being attached to a first end of the chordae tendineae;
manipulating the clamp spreader to deploy the clamp on the heart valve leaflet;
delivering an anchor into a muscle of the heart, the anchor being attached to a second end of chordae tendineae; and
adjusting a tension in the chordae tendineae.

18. The method of claim 17 , wherein delivering the clamp further comprises manipulating the spreader to transition the clamp from a closed configuration to an open configuration, positioning the clamp adjacent the leaflet, and manipulating the spreader to transition the clamp from the open configuration to the closed configuration onto the leaflet.

19. The method of claim 17 , wherein delivering the anchor further comprises deploying a plurality of arms into the muscle from the anchor by extending the anchor such that the arms extend at least partially out of a distal end of a sheath.

20. The method of claim 17 , further comprising observing regurgitation of the heart valve via transesophageal echocardiogram or fluoroscopy.

Assignees

• Boston Scient Scimed Inc

Inventors

• Shuey Daniel
• Eggert Joel T
• Rohl James P
• Abbott Aaron
• Koudela Christopher J
• Kennedy Brian
• Walker Joseph
• Pennington Douglas

Classifications

• A61F2/2457 Primary

  Chordae tendineae prostheses · CPC title

• A61F2/2463

  Implants forming part of the valve leaflets · CPC title

• A61F2/2466

  Delivery devices therefor · CPC title

• A61F2/2487

  Devices within the heart chamber, e.g. splints · CPC title

• A61B6/487

  involving fluoroscopy · CPC title