Valve Prosthesis

• US 20130282113A1
• Filed: 04/18/2012
• Published: 10/24/2013
• Est. Priority Date: 04/18/2012
• Status: Active Grant

• Current Assignee: Medtronic CV Luxembourg SARL (Medtronic Plc)
• Original Assignee: Medtronic Vascular, Inc. (Medtronic Plc)
• Inventors: Punga, Karan, Rinne, Finn, Barrett, Donna
• Granted Patent: US 9,999,501 B2
• Time in Patent Office: Days
• US Class Current: 623/2.17
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/2436 Deployment by retracting a sheath
• CPC Class Codes: A61F 2002/9505 having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument
• CPC Class Codes: A61F 2002/9534 for repositioning of stents
• CPC Class Codes: A61F 2002/9665 with additional retaining means
• CPC Class Codes: A61F 2230/0013 Horseshoe-shaped, e.g. crescent-shaped, C-shaped, U-shaped
• CPC Class Codes: A61F 2230/0078 hyperboloidal
• CPC Class Codes: A61F 2230/008 paraboloidal

Abstract

Heart valve prostheses are provided having a self-expanding frame that supports a valve body comprising a skirt and a plurality of coapting leaflets. The self-expanding frame includes an inflow section, a valve section, and an outflow section. The outflow section forms attachment loops in a collapsed configuration to attach the frame to a delivery system.

Claims

1. :

A valve prosthesis comprising;

a valve body including a plurality of valve leaflets affixed to a skirt; and

a frame including a distal inflow section, a proximal outflow section, and a valve section between the inflow section and the outflow section, wherein;

the valve body is attached to the frame in the valve section at a plurality of commissure points,

the frame includes a circumferentially repeating cell pattern in the inflow section and the valve section,

the outflow section includes a plurality of loops, the plurality of loops being attached to the valve section at a plurality of junctions, and

a plurality of circumferentially adjacent valve section cells are positioned entirely between a junction and a circumferentially adjacent junction of the plurality of junctions in a circumferential direction.

2. :

The valve prosthesis of claim 1, wherein;

each of the plurality of loops includes a first strut and a second strut joined proximally at a loop edge, a first junction, and a second junction,

the first junction connects a first loop and a second loop to the valve section, the first junction includes a first proximal valve section cell edge, a second strut from the first loop, and a first strut from the second loop, and

the second junction connects the second loop and a third loop to the valve section, the second junction includes a second proximal valve section cell edge, a second strut from the second loop, and a first strut from the third loop.

3. :

The valve prosthesis of claim 2, wherein in a collapsed configuration, each first strut and each second strut of each of the plurality of loops touch to form a closed attachment loop between each first strut, each second strut, and each loop edge.

4. :

The valve prosthesis of claim 1, wherein two valve section cells are positioned between each of the plurality of junctions in a circumferential direction.

5. :

The valve prosthesis of claim 2, wherein;

the first strut includes a first concave curve and the second strut includes a second concave curve, and

in a collapsed configuration, the first concave curve and the second concave curve touch.

6. :

The valve prosthesis of claim 3, wherein the closed attachment loop is configured to surround and engage an attachment tab on a valve prosthesis delivery system.

7. :

The valve prosthesis of claim 1, wherein the valve section is distal to the outflow section and the commissure points are distal to the plurality of junctions.

8. :

A valve prosthesis comprising;

a valve body including a plurality of leaflets affixed to a skirt; and

a single lumen frame including;

a first tubular structure;

a second tubular structure; and

a plurality of junctures attaching the first tubular structure to the second tubular structure, the plurality of junctures forming a bending point between the first tubular structure and the second tubular structure, wherein;

the valve body is attached to the frame in the first tubular structure, and

the first tubular structure is configured to generally align on a sinus axis and the second tubular structure is configured to generally align on an aortic axis offset at an angle from the sinus axis at the bending point.

10. :

The valve prosthesis of claim 8, wherein the first tubular structure is substantially rigid.

11. :

The valve prosthesis of claim 8, wherein;

the plurality of leaflets are attached to the first tubular structure at a plurality of commissure points, and

the first tubular structure is distal to the second tubular structure and the plurality of commissure points are distal to the plurality of junctures.

12. :

The valve prosthesis of claim 8, wherein deformation of the second tubular structure does not substantially deform the first tubular structure.

13. :

The valve prosthesis of claim 8, wherein;

the second tubular structure includes a plurality of loops,

each of the plurality of loops includes a first strut and a second strut joined proximally at a loop edge, a first junction, and a second junction,

the first junction connects a first loop and a second loop to the first tubular structure, the first junction includes a first tubular structure edge, a second strut from the first loop, and a first strut from the second loop, and

the second junction connects the second loop and a third loop to the first tubular structure, the second junction includes a second first tubular structure edge, a second strut from the second loop, and a first strut from the third loop.

14. :

The valve prosthesis of claim 13, wherein in a collapsed configuration, each first strut and each second strut of each of the plurality of loops touch to form a closed attachment loop between each first strut, each second strut, and each loop edge.

15. :

The valve prosthesis of claim 14, wherein the closed attachment loop is configured to surround and engage an attachment tab on a valve prosthesis delivery system.

16. :

The valve prosthesis of claim 13, wherein;

the first strut includes a first concave curve and the second strut includes a second concave curve, and

in a collapsed configuration, the first concave curve and the second concave curve touch.

17. :

The valve prosthesis of claim 13, wherein the second tubular structure includes at least four loops.

9. (canceled)

18. :

A method of treating a valve disorder in a patient'"'"'s heart, comprising;

collapsing a valve prosthesis to form attachments at a proximal end of the valve prosthesis engaging attachment tabs connected to a delivery system;

delivering the delivery system and valve prosthesis to a heart;

expanding the valve prosthesis in the heart such that attachments are not formed,

wherein in the expanded configuration, the valve prosthesis is not engaged with the attachment tabs; and

withdrawing the delivery system from the heart.

19. :

The method of claim 18, wherein;

the valve prosthesis includes a valve body having a plurality of valve leaflets affixed to a skirt and a frame having a distal inflow section, a proximal outflow section, and a valve section,

the valve body is attached to the frame in the valve section at a plurality of commissure points, and

the outflow section includes a plurality of loops, the loops being attached to the valve section at a plurality of junctions.

20. :

The valve prosthesis of claim 19, wherein;

each loop includes a first strut and a second strut joined proximally at a loop edge, a first junction, and a second junction,

the first junction connects a first loop and a second loop to the valve section, the first junction includes a first proximal valve section cell edge, a second strut from the first loop, and a first strut from the second loop, and

the second junction connects the second loop and a third loop to the valve section, the second junction includes a second proximal valve section cell edge, a second strut from the second loop, and a first strut from the third loop.