Papillary muscle position control devices, systems, and methods

• US 9,125,742 B2
• Filed: 12/15/2006
• Issued: 09/08/2015
• Est. Priority Date: 12/15/2005
• Status: Active Grant

• Current Assignee: Georgia Tech Research Corporation (University System of Georgia)
• Original Assignee: Georgia Institute of Technology (University System of Georgia)
• Inventors: Yoganathan, Ajit P., Jimenez, Jorge Hernan
• Primary Examiner(s): Anderson, Gregory
• Assistant Examiner(s): LAUER, CHRISTINA C
• Application Number:
  US12/096,948
• Publication Number:
  US 20100023117A1
• Time in Patent Office: 3,189 Days
• Field of Search: 606/139, 606/144, 623/2.11
• US Class Current: 1/1
• CPC Class Codes: A61F 2/2445 Annuloplasty rings in direct contact with the valve annulus
• CPC Class Codes: A61F 2/2457 Chordae tendineae prostheses
• CPC Class Codes: A61F 2250/0004 adjustable

Abstract

Papillary muscle position control devices (900) systems and methods are provided. According to an exemplary embodiment, a papillary muscle position control device generally comprises a first anchor (905), a second anchor (920), and a support structure (915). The first anchor can be configured to fixedly connect to an in situ valve of a heart ventricle. The second anchor can be configured to fixedly connect to a muscle wall of the valve. The support structure can be configured to have an adjustable length and be coupled to the first anchor and second anchor such that adjusting the length of the support structure varies a distance between the first anchor and the second anchor. Other embodiments are also claimed and described.

Claims

1. A papillary muscle positioning system comprising:

a first anchor configured to fixedly connect to an in situ heart valve situated in a heart between a heart ventricle and atrium;

a second anchor configured to fixedly connect to at least one of a ventricular wall and a papillary muscle of the heart;

a support structure coupled between and to the first anchor and the second anchor such that adjusting a length of the support structure varies a distance between the first anchor and the second anchor;

an adjustment mechanism at the first anchor configured to lockably adjust the length of the support structure; and

an adjustment device for adjusting, from outside the heart and while the heart is beating, the adjustment mechanism to adjust the length of the support structure and a distance between an annulus of the heart valve and a papillary muscle of the heart.

2. The system of claim 1, wherein the adjustment device is a remote activator and the adjustment mechanism is operatively configured to receive instructions from the remote activator and in response adjust the length of the support structure.

3. The system of claim 2, wherein the adjustment mechanism is configured to transmit status information on the position of the length of the support structure to a receiver located outside the body.

4. The system of claim 1, the support structure comprising a first end defining an aperture configured and shaped to receive a corresponding end of the adjustment device, the first end further comprising a threaded portion capable of rotation relative to the support structure such that rotation of the adjustment device rotates the threaded portion relative to a corresponding portion of the support structure.

5. The system of claim 1, the adjustment device comprising an elongated body configured for extension from outside the atrium to engage the adjustment mechanism on the first anchor when connected to the in situ valve.

6. The system of claim 1, wherein the first anchor is an annuloplasty ring.

7. The system of claim 6, wherein the support structure is a suture.

8. The system of claim 6, wherein there are two of the support structures and two corresponding second anchors, and the support structures couple to the annuloplasty ring at two spaced adjustment mechanisms so as to provide adjustable length support structures between the two adjustment mechanisms and two papillary muscles within the ventricle.

9. The system of claim 6, wherein the adjustment mechanism comprises a housing secured to the annuloplasty ring containing an internally movable member to which the support structure fixedly attaches, the adjustment device being configured to displace the internally movable member with respect to the housing, thus displacing the support structure relative to the housing and the annuloplasty ring to which the housing is secured.

10. The system of claim 9, wherein the internally movable member is a threaded nut engaged to a threaded bolt having a head, the adjustment device comprising an elongated body configured for extension from outside the atrium to engage and rotate the head of the threaded bolt and displace the threaded nut within the housing.

11. The system of claim 10, wherein the support structure is a suture and the threaded nut includes an attachment point to which the suture is secured.

12. The system of claim 1, wherein the support structure has a unidirectional bending structure.

13. The system of claim 12, wherein there are two of the support structures and two corresponding second anchors, and the support structures couple to two spaced first anchors so as to provide adjustable length support structures between the two first anchors and two papillary muscles within the ventricle, and wherein the unidirectional bending structure in each of the support structures cause the support structures to flex inward toward each other when subjected to compressive stresses.

14. The system of claim 1, wherein the first anchor is an annulus anchor having flexible arms that extend at least partially around a perimeter of the annulus.

15. The system of claim 1, the second anchor comprising a pad, wherein the support structure is coupled to the pad for attachment to the papillary muscle.

16. The system of claim 1, wherein the support structure comprises an elongated rod.

17. The system of claim 1, wherein the support structure comprises a wire.

18. The system of claim 1, wherein the support structure comprises a pair of relatively movable elongated members at least one of which having an interior for receiving an end of the other elongated member, the two elongated members having cooperating threads for adjusting their axial positions with respect to one another.

19. The system of claim 18, further including a security wire disposed within and through the interior of the support structure.

20. A papillary muscle positioning system comprising:

an annuloplasty ring configured to fixedly connect to an in situ heart valve situated in a heart between a heart ventricle and atrium;

an anchor configured to fixedly connect to at least one of a ventricular wall and a papillary muscle of the heart;

a support structure coupled between and to the annuloplasty ring and the anchor such that adjusting a length of the support structure varies a distance between the annuloplasty ring and the anchor;

an adjustment mechanism at the annuloplasty ring for lockably adjusting the length of the support structure while the heart is beating such that a distance between an annulus of the heart valve and a papillary muscle is adjusted.

21. The system of claim 20, the support structure comprising a first end defining an aperture, the first end further comprising a threaded portion capable of rotation relative to the support structure to adjust the length thereof.

22. The system of claim 21, the adjustment device comprising an elongated body configured for extension from outside the atrium to engage the aperture on the first end of the support structure.

23. The system of claim 20, wherein the support structure is a suture.

24. The system of claim 20, wherein there are two of the support structures and two corresponding anchors, and the support structures couple to the annuloplasty ring at two spaced adjustment mechanisms so as to provide adjustable length support structures between the two adjustment mechanisms and two papillary muscles within the ventricle.

25. The system of claim 20, wherein the adjustment mechanism comprises a housing secured to the annuloplasty ring containing an internally movable member to which the support structure fixedly attaches, the adjustment device being configured to displace the internally movable member with respect to the housing, thus displacing the support structure relative to the housing and the annuloplasty ring to which the housing is secured.

26. The system of claim 25, adjustment mechanism is operatively configured to receive instructions from a remote activator and in response adjust the length of the support structure.

27. The system of claim 26, wherein the adjustment mechanism is configured to transmit status information on the position of the length of the support structure to a receiver located outside the body.

28. The system of claim 25, wherein the internally movable member is a threaded nut engaged to a threaded bolt having a head, the adjustment device comprising an elongated body configured for extension from outside the atrium to engage and rotate the head of the threaded bolt and displace the threaded nut within the housing.

29. The system of claim 28, wherein the support structure is a suture and the threaded nut includes an attachment point to which the suture is secured.

30. The system of claim 20, wherein the support structure has a unidirectional bending structure.

31. The system of claim 30, wherein there are two of the support structures and two corresponding anchors, and the support structures couple to two spaced locations on the annuloplasty ring so as to provide adjustable length support structures between the two spaced locations on the annuloplasty ring and two papillary muscles within the ventricle, and wherein the unidirectional bending structure in each of the support structures cause the support structures to flex inward toward each other when subjected to compressive stresses.

32. The system of claim 20, the anchor comprising a pad, wherein the support structure is coupled to the pad for attachment to the papillary muscle.

33. The system of claim 20, wherein the support structure comprises an elongated rod.

34. The system of claim 20, wherein the support structure comprises a wire.

35. The system of claim 20, wherein the support structure comprises a pair of relatively movable elongated members at least one of which having an interior for receiving an end of the other elongated member, the two elongated members having cooperating threads or adjusting their axial positions with respect to one another.

36. The system of claim 35, further including a security wire disposed within and through the interior of the support structure.