Stented Heart Valve Devices

• US 20100036479A1
• Filed: 04/23/2009
• Published: 02/11/2010
• Est. Priority Date: 04/23/2008
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Redmond, Jerald, MacDonald, Stuart R., House, Morgan M., Ryan, Timothy R., Morrow, Joseph C., Hill, Alexander J., Eberhardt, Carol E., Shay, Janice L., Capps, Mark J.
• Granted Patent: US 9,173,737 B2
• Time in Patent Office: Days
• US Class Current: 623/1.150
• CPC Class Codes: A61F 2/24 Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
• CPC Class Codes: A61F 2/2412 with soft flexible valve members, e.g. tissue valves shaped like natural valves check valves with flexible valve members in general F16K15/14
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• 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
• CPC Class Codes: A61F 2/2487 Devices within the heart chamber, e.g. splints
• CPC Class Codes: A61F 2210/0014 using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61F 2220/0075 sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable
• CPC Class Codes: A61F 2230/001 Figure-8-shaped, e.g. hourglass-shaped
• CPC Class Codes: A61F 2230/0045 Omega-shaped
• CPC Class Codes: A61F 2230/005 Rosette-shaped, e.g. star-shaped
• CPC Class Codes: A61F 2230/0054 V-shaped
• CPC Class Codes: A61F 2230/0067 conical
• CPC Class Codes: A61F 2230/0076 ellipsoidal or ovoid
• CPC Class Codes: A61F 2230/008 paraboloidal
• CPC Class Codes: A61F 2250/0039 differing in diameter

Abstract

A stent frame including an annular portion having first and second ends, a central longitudinal axis, and a wire portion with at least two extending posts and a generally sinusoidal series of peaks and valleys between each of the at least two extending posts; an atrial portion extending from the first end of the annular portion, wherein the atrial portion includes a plurality of flares that extend radially outward relative to the longitudinal axis of the annular portion; and a ventricular portion extending from the second end of the annular portion, wherein the ventricular portion includes at least one flare that extends radially outward relative to the longitudinal axis of the annular portion.

Claims

1. A stent frame comprising:

an annular portion comprising first and second ends, a central longitudinal axis, and a wire portion comprising at least two extending posts and a generally sinusoidal structure of peaks and valleys between each of the at least two extending posts;

an atrial portion extending from the first end of the annular portion, wherein the atrial portion comprises a plurality of flares that extend radially outward relative to the longitudinal axis of the annular portion; and

a ventricular portion extending from the second end of the annular portion, wherein the ventricular portion comprises at least one flare that extends radially outward relative to the longitudinal axis of the annular portion.

2. The stent frame of claim 1, wherein the frame is compressible and expandable for percutaneous delivery and implantation into a body lumen.

3. The stent frame of claim 1, wherein at least one of the annular portion, the atrial portion, and the ventricular portion comprises a shape memory material.

4. The stent frame of claim 1, wherein each of the extending posts extends in a direction that is generally parallel to the central longitudinal axis.

5. The stent frame of claim 1, wherein each of the flares of the atrial portion has a first end that extends from a peak of the annular portion and a second end that extends from an adjacent peak of the annular portion.

6. The stent frame of claim 1, wherein each of the at least two extending posts extends from two adjacent peaks of the annular portion and toward the ventricular portion of the stent frame.

7. The stent frame of claim 1, further comprising a first leaflet attached to two adjacent extending posts within an interior area of the stent frame, and a second leaflet attached to two adjacent extending posts within the interior area of the stent frame.

8. The stent frame of claim 7, further comprising a third leaflet attached to two adjacent extending posts within the interior area of the stent frame.

9. The stent frame of claim 1, wherein the annular portion, the atrial portion, and the ventricular portion comprise an integral structure.

10. The stent frame of claim 1, wherein a height of each of the extending posts is greater than the distance between the peaks and valleys of the generally sinusoidal structure between each of the at least two extending posts.

11. The stent frame of claim 10, wherein a first extending post comprises a base that is spaced at the furthest distal point of the frame from the atrial portion of the stent frame, and wherein the stent frame further comprises a first support member comprising a first end that extends from the annular portion of the stent frame, a second end that extends from the annular portion of the stent frame, and a base between its first and second ends that is adjacent to the base of the first extending post.

12. The stent frame of claim 11, wherein the first support member extends in a direction that is generally parallel to the central longitudinal axis of the stent frame.

13. The stent frame of claim 1, further comprising a covering material attached to at least a portion of at least one of the annular portion, the atrial portion, and the ventricular portion.

14. The stent frame of claim 13, wherein the covering material extends across a width of each of the extending posts, and wherein the covering material comprises a cut line within the width of the extending post.

15. The stent frame of claim 1, wherein each of the annular portion, the atrial portion, and the ventricular portion comprises a separate wire.

16. A valve prosthesis comprising:

a stent frame comprising;

an annular portion comprising first and second ends, a central longitudinal axis, and a wire portion comprising at least two extending posts and a generally sinusoidal structure of peaks and valleys between each of the at least two extending posts;

an atrial portion extending from the first end of the annular portion, wherein the atrial portion comprises a plurality of flares that extend radially outward relative to the longitudinal axis of the annular portion; and

a ventricular portion extending from the second end of the annular portion, wherein the ventricular portion comprises at least one flare that extends radially outward relative to the longitudinal axis of the annular portion; and

a prosthetic valve comprising a first leaflet attached to two adjacent extending posts within an interior area of the stent frame, and a second leaflet attached to two adjacent extending posts within the interior area of the stent frame.

17. The valve prosthesis of claim 16, wherein the extending posts of the annular portion are aligned with the commissures of the prosthetic valve.

18. A stent frame comprising:

an annular portion comprising first and second ends, a central longitudinal axis, and a generally sinusoidal structure of peaks and valleys;

an atrial portion extending from the first end of the annular portion and comprising a generally sinusoidal structure of peaks and valleys, wherein each of the valleys of the atrial portion extends from a peak of the annular portion;

a ventricular portion extending from the second end of the annular portion, wherein the ventricular portion comprises at least one flare that extends radially outward relative to the longitudinal axis of the annular portion; and

a securing structure extending from the atrial portion.

19. The stent frame of claim 18, wherein the securing structure comprises a dome-shaped structure of wires that extend from the atrial portion toward the central longitudinal axis.

20. The stent frame of claim 18, wherein the securing structure comprises a plurality of flares, each of which has a distal tip that curves at least slightly toward the central longitudinal axis.