Mitral Valve Annuloplasty Device with Twisted Anchor

• US 20060276891A1
• Filed: 07/17/2006
• Published: 12/07/2006
• Est. Priority Date: 12/19/2003
• Status: Active Grant

• Current Assignee: Cardiac Pacemakers Incorporated (Boston Scientific Corporation)
• Original Assignee: Cardiac Pacemakers Incorporated (Boston Scientific Corporation)
• Inventors: Nieminen, Gregory, Thaler, Carly A.
• Granted Patent: US 9,526,616 B2
• Time in Patent Office: Days
• US Class Current: 623/2.370
• CPC Class Codes: A61F 2/2442 Annuloplasty rings or inserts for correcting the valve shape; Implants for improving the function of a native heart valve
• CPC Class Codes: A61F 2/2451 Inserts in the coronary sinus for correcting the valve shape
• CPC Class Codes: A61F 2/2466 Delivery devices therefor

Abstract

The present invention relates to a tissue shaping device adapted to be disposed in a vessel near a patient'"'"'s heart to reshape the patient'"'"'s heart. The device comprises a first anchor and a second anchor adapted to be deployed by a catheter to engage a vessel wall while the first anchor is adapted to resist the compression of a first part of the first anchor and resist the expansion of a second part of the first anchor in response to a compressive force on the first part.

Claims

1. A tissue shaping device adapted to be deployed in a vessel to reshape tissue adjacent to the vessel, comprising:

a first anchor and a second anchor adapted to be deployed by a catheter to engage a vessel wall,

wherein the first anchor comprises a shaping feature adapted to resist the compression of a first part of the first anchor and resist the expansion of a second part of the first anchor in response to a compressive force on the first part; and

a support structure disposed between and operatively connecting the first anchor and the second anchor.

2. The device of claim 1 wherein the first anchor comprises two entwisted wire segments.

3. The device of claim 1 wherein the first anchor is formed substantially in a figure-8 configuration comprising first and second opposed arms, the shaping feature coupling the first and second arms at at least one coupling point.

4. The device of claim 3 wherein the coupling point is substantially at an apex of the first anchor when the first anchor is in a deployed configuration.

5. The device of claim 3 wherein the first and second opposed arms and the shaping feature comprise entwisted wire.

6. The device of claim 1 wherein the first anchor has a deployed configuration in which its width is greater than its height.

7. The device of claim 1 further comprising an anchor lock adapted to lock the first anchor in an expanded configuration.

8. The device of claim 1 further comprising an anchor lock adapted to lock the second anchor in an expanded configuration.

9. The device of claim 1 further comprising a coupler adapted to couple the device to a delivery tool.

10. The device of claim 9 wherein the coupler comprises a tether and a hitch wire.

11. The device of claim 9 wherein the coupler is further adapted to release the device from the delivery tool.

12. The device of claim 1 wherein the device is adapted to be recaptured by the catheter.

13. The device of claim 1 wherein the first anchor is adapted to engage a coronary sinus.

14. The device of claim 1 wherein the second anchor is adapted to engage a coronary sinus.

15. A method of performing mitral valve annuloplasty on a patient'"'"'s heart comprising:

percutaneously delivering a mitral valve annuloplasty device to a vessel in the patient'"'"'s heart, the device comprising first and second anchors and a support structure disposed between and operatively connecting the first and second anchors;

anchoring the first anchor of the mitral valve annuloplasty device in the vessel;

resisting compression of a first part of the first anchor and resisting expansion of a second part of the first anchor in response to a compressive force on the first part; and

anchoring the second anchor of the mitral valve annuloplasty device.

16. The method of claim 15 wherein the delivering step comprises delivering the device to a patient'"'"'s heart via a catheter.

17. The method of claim 15 wherein the first anchoring step comprises expanding the first anchor from a delivery configuration to a deployed configuration in which the first anchor engages a coronary sinus.

18. The method of claim 17 wherein the expanding step comprises expanding the first anchor to a deployed configuration in which the anchor'"'"'s width is greater than the anchor'"'"'s height.

19. The method of claim 17 further comprising locking the first anchor in the deployed configuration.

20. The method of claim 17 wherein the second anchoring step comprises expanding the second anchor from a delivery configuration to a deployed configuration in which the second anchor engages a coronary sinus.

21. The method of claim 20 further comprising locking the second anchor in the deployed configuration.

22. The method of claim 15 further comprising capturing the first anchor within a catheter after the first anchoring step.

23. The method of claim 22 wherein the capturing step comprises advancing the catheter distally over the first anchor to place the first anchor inside the catheter.

24. The method of claim 15 further comprising capturing the second anchor within a catheter after the second anchoring step.

25. The method of claim 24 wherein the capturing step comprises advancing the catheter distally over the second anchor to place the second anchor inside the catheter.

26. The method of claim 15 further comprising applying a proximally directed force on the mitral valve annuloplasty device after the first anchoring step.

27. The method of claim 15 further comprising uncoupling the device from a delivery tool after the second anchoring step.

28. The method of claim 27 where the uncoupling comprises releasing a hitch wire from the device and removing a tether from the device.