DYNAMICALLY ADJUSTABLE ANNULOPLASTY RING AND PAPILLARY MUSCLE REPOSITIONING SUTURE

• US 20110230961A1
• Filed: 01/05/2011
• Published: 09/22/2011
• Est. Priority Date: 01/05/2010
• Status: Abandoned Application

• Current Assignee: MiCardia Corporation
• Original Assignee: MiCardia Corporation
• Inventors: Schäfers, Hans-Joachim, Langer, Frank, Molloy, Paul A., Shaolian, Samuel M., Tsukashima, Ross
• Application Number:
  US12/985,066
• Publication Number:
  US 20110230961A1
• Time in Patent Office: Days
• US Class Current: 623/2.27
• CPC Class Codes: A61F 2/2448 D-shaped rings
• CPC Class Codes: A61F 2/2457 Chordae tendineae prostheses
• CPC Class Codes: A61F 2210/009 magnetic
• CPC Class Codes: A61F 2250/0001 Means for transferring electromagnetic energy to implants
• CPC Class Codes: A61F 2250/001 for adjusting a diameter

Abstract

A system for treating a cardiac valve includes an adjustable annuloplasty ring configured to attach to or near a cardiac valve annulus. The system also includes a suture comprising a first end coupled to the annuloplasty ring. A second end of the suture is configured to be anchored to a papillary muscle. Selectively adjusting the annuloplasty ring adjusts a tension of the suture to reposition the papillary muscle.

Claims

1. A system for treating a cardiac valve, the system comprising:

an adjustable annuloplasty ring configured to attach to or near a cardiac valve annulus; and

a suture comprising a first end coupled to the annuloplasty ring, wherein a second end of the suture is configured to be anchored to a papillary muscle,

wherein selectively adjusting the annuloplasty ring adjusts a tension of the suture to reposition the papillary muscle.

2. A system for treating a cardiac valve according to claim 1, wherein the annuloplasty ring comprises a dynamic portion configured to transform in response to a stimulus external to the annuloplasty ring, and wherein the dynamic portion is attached to and adjusts the tension of the suture.

3. A system for treating a cardiac valve according to claim 2, wherein the dynamic portion of the adjustable annuloplasty ring comprises shape-memory material.

4. A system for treating a cardiac valve according to claim 2, wherein the dynamic portion of the adjustable annuloplasty ring is positioned to correspond to the mid-septal fibrous annulus of the heart when the adjustable annuloplasty ring is attached to or near the cardiac valve annulus.

5. A system for treating a cardiac valve according to claim 2, wherein transformation of the dynamic portion changes the size of the annuloplasty ring.

6. A system for treating a cardiac valve according to claim 2, wherein the dynamic portion is configured to transform from a first shape to a second shape.

7. A system for treating a cardiac valve according to claim 6, wherein the first shape lies substantially in a plane and wherein the second shape is a shift of the dynamic portion within the plane.

8. A system for treating a cardiac valve according to claim 6, wherein the first shape lies substantially in a plane and wherein the dynamic portion shifts away from the plane to transform to the second shape.

9. A system for treating a cardiac valve according to claim 2, wherein the annuloplasty ring comprises a motor configured to effect transformation of the dynamic portion.

10. A system for treating a cardiac valve according to claim 9, wherein the dynamic portion of the adjustable annuloplasty ring comprises a hinged portion coupled to a drive rod driven by the motor.

11. A system for treating a cardiac valve according to claim 1, wherein the adjustable annuloplasty ring comprises a motor and operation of the motor adjusts the tension of the suture.

12. A system for treating a cardiac valve according to claim 11, the annuloplasty ring further comprising a spool coupled to the motor and configured to be driven by the motor, wherein the suture is coupled to the spool and configured to wind around the spool or unwind from the spool as the motor turns.

13. A system for treating a cardiac valve according to claim 11, wherein the motor is a magnetic motor comprising an internal magnet configured to rotate in response to a rotating external magnetic field.

14. A system for treating a cardiac valve according to claim 11, the annuloplasty ring further comprising a battery, wherein the motor is an electric motor powered by the battery.

15. A system for treating a cardiac valve according to claim 11, wherein the motor is operative responsive to a stimulus external to the annuloplasty ring.

16. A system for treating a cardiac valve according to claim 11, wherein the annuloplasty ring further comprises a dynamic portion configured to transform in response to a stimulus external to the annuloplasty ring.

17. A system for treating a cardiac valve according to claim 16, wherein the motor drives the dynamic portion.

18. A method for treating a cardiac valve of a patient, the method comprising:

implanting an adjustable annuloplasty ring on or near the cardiac valve annulus of the patient, the adjustable annuloplasty ring comprising a suture coupled to the annuloplasty ring and configured to be anchored to a papillary muscle, wherein the annuloplasty ring selectively adjusts a tension of the suture in response to a stimulus external to the annuloplasty ring;

anchoring the suture to the papillary muscle of the cardiac valve of the patient; and

applying an external stimulus to the annuloplasty ring to adjust the tension of the suture and thereby reposition the papillary muscle relative to the cardiac valve annulus.

19. The method for treating a cardiac valve of claim 18, wherein the external stimulus is applied with the patient postoperatively healed.

20. The method for treating a cardiac valve of claim 18, wherein the adjustable annuloplasty ring comprises a motor, and wherein applying the external stimulus comprises selectively driving the motor in a forward or reverse direction to selectively adjust the tension of the suture.

21. The method for treating a cardiac valve of claim 20, wherein the motor is magnetic, and wherein applying the external stimulus comprises rotating a magnetic field external to the magnetic motor so as to drive the magnetic motor.

22. The method for treating a cardiac valve of claim 18, wherein the external stimulus comprises an electrical impulse.