MEDICAL DEVICE SUITABLE FOR USE IN TREATMENT OF A VALVE

• US 20070293943A1
• Filed: 06/15/2007
• Published: 12/20/2007
• Est. Priority Date: 06/15/2006
• Status: Abandoned Application

• Current Assignee: Mednua Limited
• Original Assignee: Mednua Limited
• Inventors: Quinn, Martin
• Application Number:
  US11/763,590
• Publication Number:
  US 20070293943A1
• Time in Patent Office: Days
• US Class Current: 623/2.11
• CPC Class Codes: A61F 2/246 Devices for obstructing a leak through a native valve in a closed condition

Abstract

A medical device (1) suitable for use in treatment of a mitral valve comprises a treatment element (2) located at the region of co-aptation of the leaflets (3) of the mitral valve, a support element (4) which supports the treatment element (2) at the region of co-aptation of the valve leaflets (3), and an anchor element (8) to anchor the support element (4) to the ventricle wall at the apex (9) of the ventricle (5). The anchor element (8) is located at the distal end of the support element (4), and the proximal end (120) of the support element (4) is unconstrained relative to the wall of the ventricle (5) and the wall of the atrium (6). The treatment element (2) acts to resist blood flow in the retrograde direction through the valve opening.

Claims

1. A medical device suitable for use in treatment of a valve, the device comprising:

—

a treatment element configured to be located at the region of co-aptation of leaflets of a valve to resist fluid flow in a retrograde direction through an opening of the valve;

at least one support element to support the treatment element at the region of co-aptation of the valve leaflets; and

at least one anchor element to anchor the at least one support element to a wall of body tissue;

the at least one anchor element being located at the distal end of the at least one support element;

the proximal end of the at least one support element being unconstrained relative to the body tissue wall.

2. A device as claimed in claim 1 wherein the support element is configured to extend through a valve opening.

3. A device as claimed in claim 1 wherein the anchor element is extendable into a body tissue wall.

4. A device as claimed in claim 1 wherein the anchor element is configured to releasably anchor the support element to a wall of body tissue.

5. A device as claimed in claim 1 wherein the anchor element comprises a threaded element.

6. A device as claimed in claim 1 wherein the anchor element is configured to anchor the support element to a ventricle of a heart.

7. A device as claimed in claim 1 wherein the proximal end of the support element is configured to be located externally of a heart.

8. A device as claimed in claim 1 wherein the treatment element is movable between a collapsed configuration and an expanded configuration.

9. A device as claimed in claim 8 wherein the treatment element is substantially tubular-shaped in the collapsed configuration.

10. A device as claimed in claim 8 wherein the treatment element is substantially disc-shaped in the expanded configuration.

11. A device as claimed in claim 8 wherein the treatment element is substantially curved in longitudinal cross-section in the expanded configuration.

12. A device as claimed in claim 1 wherein the treatment element is substantially non-circular in lateral cross-section.

13. A device as claimed in claim 8 wherein the treatment element is biased towards the expanded configuration.

14. A device as claimed in claim 8 wherein a first end of the treatment element is movable relative to a second end of the treatment element to move the treatment element between the collapsed configuration and the expanded configuration.

15. A device as claimed in claim 1 wherein the treatment element comprises a membrane.

16. A device as claimed in claim 8 wherein at least part of the treatment element is inflatable to move the treatment element from the collapsed configuration to the expanded configuration.

17. A device as claimed in claim 1 wherein the treatment element is movable between a delivery configuration and a deployed configuration.

18. A device as claimed in claim 1 wherein the treatment element comprises a collar member with a lumen extending therethrough.

19. A device as claimed in claim 1 wherein the treatment element is fixed to the support element.

20. A device as claimed in claim 1 wherein the treatment element is movable relative to the support element for delivery of the treatment element over the support element to the region of co-aptation of leaflets of a valve.

21. A device as claimed in claim 1 wherein the treatment element is mountable on the support element.

22. A device as claimed in claim 1 wherein the support element is substantially flexible.

23. A device as claimed in claim 1 wherein the support element comprises a wire element.

24. A device as claimed in claim 1 wherein the device comprises a delivery member coupleable to the treatment element to facilitate delivery of the treatment element to the region of co-aptation of leaflets of a valve.

25. A method of treating a valve, the method comprising the steps of:

locating a treatment element at the region of co-aptation of leaflets of the valve to resist fluid flow in a retrograde direction through an opening of the valve,

using at least one support element to support the treatment element at the region of co-aptation of the valve leaflets,

anchoring the distal end of the at least one support element to a wall of body tissue with the proximal end of the at least one support element being unconstrained relative to the body tissue wall.

26. A method as claimed in claim 25 wherein the support element extends through the valve opening.

27. A method as claimed in claim 25 wherein the distal end of the support element is extended into the body tissue wall.

28. A method as claimed in claim 27 wherein the distal end of the support element is extended only partially through the body tissue wall.

29. A method as claimed in claim 27 wherein the distal end of the support element is extended into the body tissue wall from an interior side of the body tissue wall.

30. A method as claimed in claim 25 wherein the distal end of the support element is releasably anchored to the body tissue wall.

31. A method as claimed in claim 25 wherein the distal end of the support element is anchored to a ventricle of a heart.

32. A method as claimed in claim 25 wherein the proximal end of the support element is located externally of a heart.

33. A method as claimed in claim 25 wherein the method comprises the step of moving the treatment element between a collapsed configuration and an expanded configuration.

34. A method as claimed in claim 33 wherein a first end of the treatment element is moved relative to a second end of the treatment element to move the treatment element between the collapsed configuration and the expanded configuration.

35. A method as claimed in claim 33 wherein at least part of the treatment element is inflated to move the treatment element from the collapsed configuration to the expanded configuration.

36. A method as claimed in claim 25 wherein the method comprises the step of moving the treatment element between a delivery configuration and a deployed configuration.

37. A method as claimed in claim 25 wherein the treatment element is fixed to the support element, and the method comprises the step of advancing the support element to deliver the treatment element to the region of co-aptation of the valve leaflets.

38. A method as claimed in claim 25 wherein the method comprises the step of moving the treatment element over the support element to deliver the treatment element to the region of co-aptation of the valve leaflets.

39. A method as claimed in claim 25 wherein the method comprises the step of mounting the treatment element to the support element.

40. A method as claimed in claim 25 wherein the method comprises the step of coupling the treatment element to a delivery member before delivery of the treatment element to the region of co-aptation of the valve leaflets.