Methods and systems for rapid retraction of a transcatheter heart valve delivery system

Patent metadata

Field	Value
Publication number	US-12201524-B2
Application number	US-202217902433-A
Country	US
Kind code	B2
Filing date	Sep 2, 2022
Priority date	Nov 21, 2016
Publication date	Jan 21, 2025
Grant date	Jan 21, 2025

Abstract

Methods for the rapid retraction of trans-catheter heart valve delivery systems are provided. A rapid retraction trans-catheter heart valve delivery system comprises a catheter based delivery system. The delivery system has internal mechanisms that allow for the controlled deployment of a heart valve prosthesis, as well as mechanisms that allow for quickly closing the catheter once the heart valve prosthesis has been implanted. This rapid retraction ability allows for reduced procedural durations and thus reduced risk to the patient.

First claim

What is claimed is:

1. A delivery device for delivering a prosthesis, the device comprising:
a delivery catheter configured to carry a prosthesis therein;
a dilator catheter disposed in the delivery catheter and having a tapered distal tip coupled thereto;
a rapid retraction mechanism for controlling movement of the delivery catheter relative to the tapered distal tip, wherein:
the rapid retraction mechanism comprises an inner handle threadably connected to an outer handle, and
the rapid retraction mechanism is configured to threadably decouple the inner handle from the outer handle such that the outer handle is proximally retractable relative to the inner handle to abut a proximal end of the tapered distal tip against a distal end of the delivery catheter.

2. The device of claim 1 , further comprising a first actuation mechanism for controlling movement of the delivery catheter, wherein actuation of the first actuation mechanism moves the delivery catheter away from the prosthesis thereby at least partially removing a constraint therefrom.

3. The device of claim 2 , further comprising a deployment mechanism for controlling release of the prosthesis from an anchoring catheter, the anchoring catheter disposed at least partially in the delivery catheter, and wherein actuation of the deployment mechanism moves the anchoring catheter away from the prosthesis thereby releasing a constraint therefrom.

4. The device of claim 2 , wherein the first actuation mechanism comprises a thumbwheel.

5. The device of claim 2 , wherein the deployment mechanism comprises an actuatable button with a linkage coupled thereto.

6. The device of claim 1 , wherein the rapid retraction mechanism comprises a release mechanism, the actuation of which threadably decouples the inner handle from the outer handle.

7. The device of claim 6 , wherein the release mechanism comprises a button.

8. The device of claim 1 , wherein the rapid retraction mechanism comprises a screw thread and interference member configured to constrain movement of the rapid retraction mechanism.

9. The device of claim 1 , wherein the rapid retraction mechanism comprises a flexible interference member configured to be deflected to release the rapid retraction mechanism.

10. The device of claim 1 , wherein the rapid retraction mechanism comprises a pin and a pin-hole link, wherein the pin is configured to be removed from the pin-hole link to release the rapid retraction mechanism.

11. The device of claim 1 , wherein the proximal end of the tapered distal tip abutted against the distal end of the delivery catheter forms a smooth continuous outer surface on the delivery device.

12. A system comprising:
a prosthesis;
a delivery device comprising:
a delivery catheter configured to carry the prosthesis therein;
a dilator catheter disposed in the delivery catheter and having a tapered distal tip coupled thereto;
a rapid retraction mechanism for controlling movement of the delivery catheter relative to the tapered distal tip, wherein:
the rapid retraction mechanism comprises an inner handle threadably connected to an outer handle, and
the rapid retraction mechanism is configured to threadably decouple the inner handle from the outer handle such that the outer handle is proximally retractable relative to the inner handle to abut a proximal end of the tapered distal tip against a distal end of the delivery catheter.

13. The system of claim 12 , wherein the prosthesis comprises a prosthetic heart valve.

14. The system of claim 13 , wherein the prosthetic heart valve comprises a mitral valve or a tricuspid valve.

15. The system of claim 12 , wherein the rapid retraction mechanism comprises a release mechanism, the actuation of which threadably decouples the inner handle from the outer handle.

16. The system of claim 12 , wherein the release mechanism comprises a button.

17. The system of claim 12 , wherein the rapid retraction mechanism comprises a screw thread and interference member configured to constrain movement of the rapid retraction mechanism.

18. The system of claim 12 , wherein the rapid retraction mechanism comprises a flexible interference member configured to be deflected to release the rapid retraction mechanism.

19. The system of claim 12 , wherein the rapid retraction mechanism comprises a pin and a pin-hole link, wherein the pin is configured to be removed from the pin-hole link to release the rapid retraction mechanism.

20. The system of claim 12 , wherein the proximal end of the tapered distal tip abutted against the distal end of the delivery catheter forms a smooth continuous outer surface on the delivery device.

21. The system of claim 12 , further comprising a first actuation mechanism for controlling movement of the delivery catheter away from the prosthesis, wherein the first actuation mechanism comprises a thumbwheel.

22. The system of claim 12 , further comprising a deployment mechanism for controlling release of the prosthesis from an anchoring catheter, the anchoring catheter disposed at least partially in the delivery catheter, and wherein actuation of the deployment mechanism moves the anchoring catheter away from the prosthesis thereby releasing a constraint therefrom.

23. The system of claim 22 , wherein the deployment mechanism comprises an actuatable button with a linkage coupled thereto.

Assignees

• Neovasc Tiara Inc

Inventors

• Kerr Ian Fraser
• Wong Karen Tsoek-Ji
• Nyuli Colin Alexander
• Lane Randy Matthew

Classifications

• A61M29/02

  Dilators made of swellable material {(balloon catheters for angioplasty A61M25/104)} · CPC title

• A61F2/2436 Primary

  Deployment by retracting a sheath · CPC title

• A61F2/9517

  handle assemblies therefor · CPC title

• A61F2250/0064

  Sets comprising a plurality of prosthetic parts of different sizes · CPC title

• A61F2/2427 Primary

  Devices for manipulating or deploying heart valves during implantation · CPC title