METHODS AND APPARATUS FOR REDUCING VALVE PROLAPSE

• US 20090222081A1
• Filed: 01/23/2009
• Published: 09/03/2009
• Est. Priority Date: 01/24/2008
• Status: Abandoned Application

• Current Assignee: Coherex Medical, Inc. (Johnson & Johnson)
• Original Assignee: Coherex Medical, Inc. (Johnson & Johnson)
• Inventors: Edmiston, Daryl R., Miles, Scott D., Davis, Clark C., Linder, Richard J.
• Application Number:
  US12/359,185
• Publication Number:
  US 20090222081A1
• Time in Patent Office: Days
• US Class Current: 623/2.100
• CPC Class Codes: A61B 2017/00243 cardiac
• CPC Class Codes: A61F 2/2454 Means for preventing inversion of the valve leaflets, e.g. chordae tendineae prostheses
• CPC Class Codes: A61F 2/2457 Chordae tendineae prostheses

Abstract

Medical devices, systems and methods for treating valve prolapse in, for example, the mitral valve. The medical device is employed by delivering the device percutaneously and lodging the device adjacently above the valve. With this arrangement, the device provides a back-stop to prevent valve prolapse and, thus, prevent valve regurgitation.

Claims

1. A medical device configured to be delivered with a catheter in a heart to minimize prolapse of a valve, comprising:

a loop portion having an outer periphery and an inner periphery, the loop portion configured to be positioned over the valve of the heart and lodged against tissue of the heart; and

an intermediate portion extending from the inner periphery of the loop portion and configured to substantially limit upward movement of leaflets of the valve.

2. The medical device of claim 1, wherein the loop portion is configured to self expand and bias against heart tissue adjacently above a valve annulus.

3. The medical device of claim 1, further comprising tines extending from an outer periphery of the loop portion.

4. The medical device of claim 1, wherein the intermediate portion comprises multiple intermediate portions extending between different portions of the loop portion.

5. The medical device of claim 1, wherein the intermediate portion comprises a first set of multiple lines extending in a first direction from the inner periphery and a second set of multiple lines extending in a second direction from the inner periphery, the first direction being transverse to the second direction.

6. The medical device of claim 1, wherein the intermediate portion exhibits a coiled configuration.

7. The medical device of claim 1, wherein the intermediate portion comprises an arcuate portion.

8. The medical device of claim 1, further comprising a member to promote tissue growth.

9. The medical device of claim 1, wherein the loop portion and the intermediate portion exhibit a substantially flat shape.

10. The medical device of claim 1, wherein the loop portion exhibits a tubular configuration, the outer periphery of the tubular configuration being sized and configured to lodge against tissue at a lower portion of the heart, the intermediate portion extending from a lower portion of the tubular configuration.

11. A medical device configured to be delivered with a catheter in a heart to minimize prolapse of a valve, comprising:

a tubular portion having an outer periphery and an lower portion, the outer periphery being sized and configured to be lodged against tissue of the heart adjacently above an annulus of the valve; and

an intermediate portion extending from the lower portion of the tubular portion and configured to extend over leaflets of the valve to limit upward movement of the leaflets of the valve.

12. The medical device of claim 11, wherein the tubular portion comprises a tissue growth member configured to promote tissue in-growth.

13. The medical device of claim 11, further comprising tines at the outer periphery of the tubular portion, the tines being oriented and configured to lodge the tubular portion against the tissue of the heart.

14. The medical device of claim 11, wherein the tubular portion comprises an upper loop portion and a lower loop portion with intermediate extensions therebetween.

15. The medical device of claim 14, wherein the intermediate portion extends from the lower loop portion of the tubular portion.

16. The medical device of claim 11, wherein the intermediate portion comprises multiple intermediate portions extending between different portions of the lower portion of the tubular portion.

17. The medical device of claim 11, wherein the intermediate portion comprises a first set of multiple lines extending in a first direction from the lower portion of the tubular portion and a second set of multiple lines extending in a second direction from the lower portion of the tubular portion, the first direction being substantially transverse to the second direction.

18. The medical device of claim 11, wherein the tubular portion is configured to self expand and bias against the tissue of the heart adjacently above the valve.

19. A medical device configured to be delivered with a catheter in a heart to minimize prolapse of a valve, the medical device comprising:

an intermediate portion configured to be positioned above a free-edge of the valve;

an anchor portion extending from the intermediate portion and configured to lodge against heart tissue above the valve; and

a plurality of tabs laterally extending from the intermediate portion and configured to abut against leaflets of the valve and substantially limit upward movement of the leaflets of the valve.

20. The medical device of claim 19, wherein the plurality of tabs extend downward and outward from opposite sides of the intermediate portion.

21. A method of reducing valve prolapse, the method comprising:

disposing a frame within the heart adjacent a valve; and

limiting movement of at least one leaflet of the valve with a portion of the frame.