Device, assembly and method for mitral valve repair

• US 7,364,588 B2
• Filed: 08/04/2004
• Issued: 04/29/2008
• Est. Priority Date: 03/11/2002
• Status: Expired due to Term

• Current Assignee: Cardiac Pacemakers Incorporated (Boston Scientific Corporation)
• Original Assignee: Cardiac Pacemakers Incorporated (Boston Scientific Corporation)
• Inventors: Nieminen, Gregory, Mathis, Mark L.
• Primary Examiner(s): GHERBI, SUZETTE JAIME J
• Application Number:
  US10/912,735
• Publication Number:
  US 20050065598A1
• Time in Patent Office: 1,364 Days
• Field of Search: 623 236- 237
• US Class Current: 623/2.37
• CPC Class Codes: A61F 2/2451 Inserts in the coronary sinus for correcting the valve shape
• CPC Class Codes: Y10S 623/904 Heart

Abstract

A mitral valve therapy device effects the condition of a mitral valve annulus of a heart. The device includes an elongated member dimensioned to be placed in the coronary sinus of the heart adjacent the mitral valve annulus. The elongated member is flexible when placed in the heart in a first orientation to position the device in the coronary sinus adjacent the mitral valve annulus and relatively inflexible when rotated into a second orientation after the device is positioned in the coronary sinus adjacent to the mitral valve annulus to substantially straighten and increase the radius of curvature of the mitral valve annulus.

Claims

1. A device that effects the condition of a mitral valve annulus of a heart comprising an elongated member dimensioned to be placed in the coronary sinus of the heart adjacent the mitral valve annulus, the elongated member having a relatively low resistance to flexure in a first direction and a relatively high resistance to flexure in a second direction, wherein the first and second directions lie in the same plane, the elongated member has first and second ends and the device includes an anchor at each end that fix the device in the coronary sinus.

2. The device of claim 1 wherein each anchor anchors the device against longitudinal movement and rotational movement.

3. The device of claim 1 wherein the first end anchor comprises an expandable anchor.

4. The device of claim 1 wherein the first end anchor comprises a first anchor section and a second anchor section coupled by a flexible coupling.

5. The device of claim 1 wherein the second end anchor comprises an expandable anchor.

6. An assembly that effects the condition of a mitral valve annulus of a heart comprising:

an elongated member dimensioned to be placed in the coronary sinus of the heart adjacent to the mitral valve annulus, the elongated member being flexible when placed in the heart in a first orientation to conform to the coronary sinus and relatively inflexible when rotated into a second orientation; and

a deployment tool releasably coupled to the elongated member by a releasable coupling assembly.

7. The device of claim 6 wherein the coupling assembly comprises a first coupler associated with the deployment tool and a second coupler associated with the elongated member and complementary with the first coupler.

8. The device of claim 7 wherein the first coupler is adapted to change shape to release from the second coupler.

9. The device of claim 8 wherein the first coupler is formed from shape memory material.

10. The device of claim 7 wherein the first and second couplers form a U-joint.

11. The device of claim 6 wherein the coupling assembly is adapted to be flexible.

12. A method of effecting the condition of a mitral valve annulus of a heart, the method comprising:

providing a mitral valve annulus therapy device having a relatively low resistance to flexure in a first orientation and a relatively high resistance to flexure in a second orientation;

advancing the device with a deployment tool into the coronary sinus of the heart with the device in the first orientation, the deployment tool being connected to the device through a coupling assembly;

rotating the device into the second orientation; and

releasing the device from the deployment tool by actuating the coupling assembly.

13. The method of claim 12 wherein the advancing step comprises permitting the device and deployment tool to flex about the coupling assembly.

14. The method of claim 12 further comprising anchoring a distal end of the device after the rotating step.

15. The method of claim 14 wherein the device comprises a distal anchor, the anchoring step comprising expanding the distal anchor.

16. The method of claim 12 further comprising anchoring a proximal end of the device after the rotating step.

17. The method of claim 14 wherein the device comprises a proximal anchor, the anchoring step comprising expanding the proximal anchor.

18. A method of effecting the condition of a mitral valve annulus of a heart, the method comprising:

providing a mitral valve annulus therapy device having a relatively low resistance to flexure in a first orientation and a relatively high resistance to flexure in a second orientation;

advancing the device with a deployment tool into the coronary sinus of the heart with the device in the first orientation, the deployment tool being connected to the device through a coupling assembly;

rotating the device into the second orientation; and

releasing the device from the deployment tool by actuating the coupling assembly, wherein the coupling assembly comprises a first coupler associated with the deployment tool and a second coupler associated with the elongated member and complementary with the first coupler, the actuating step comprising separating the first coupler from the second coupler.

19. The method of claim 18 wherein the separating step comprises changing a shape of the first coupler.