Stented heart valve devices

• US 9,173,737 B2
• Filed: 04/23/2009
• Issued: 11/03/2015
• Est. Priority Date: 04/23/2008
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Hill, Alexander J., Capps, Mark J., Eberhardt, Carol E., House, Morgan M., MacDonald, Stuart R., Morrow, Joseph C., Redmond, Jerald, Shay, Janice L., Ryan, Timothy R.
• Primary Examiner(s): Sweet, Thomas J
• Assistant Examiner(s): PRESTON, REBECCA STRASZHEIM
• Application Number:
  US12/428,737
• Publication Number:
  US 20100036479A1
• Time in Patent Office: 2,385 Days
• Field of Search: 623/1.24, 623/1.26, 623/1.31, 623 21- 219
• US Class Current: 1/1
• 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;

a longitudinal axis,

at least two extending posts, and

a generally sinusoidal structure of peaks and valleys between each of the at least two extending posts, the generally sinusoidal structure having first and second ends,

wherein the generally sinusoidal structure has a generally constant height and

wherein, in an expanded state, each of the extending posts extends in a direction that is generally parallel to the longitudinal axis and has a height that is greater than the generally constant height of the generally sinusoidal structure of the annular portion;

an atrial portion extending from the first end of the generally sinusoidal structure, wherein the atrial portion comprises;

a plurality of flares that extend radially outward relative to the longitudinal axis of the annular portion, and

a dome-type structure extending from the plurality of flares; and

a ventricular portion extending from the second end of the generally sinusoidal structure, wherein the ventricular portion comprises;

at least one flare that extends radially outward relative to the longitudinal axis of the annular portion, and

a first portion that extends from the second end of the generally sinusoidal structure, the first portion having a height that is smaller than a height of the at least one flare of the ventricular portion.

2. The stent frame of claim 1, wherein the stent 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 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.

5. 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.

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

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

8. The stent frame of claim 7, wherein a first extending post of the at least two extending posts comprises a base that is spaced at a furthest distal point of the stent frame from the atrial portion of the stent frame, and further comprising a first support member comprising a first end that extends from the generally sinusoidal structure, a second end that extends from the generally sinusoidal structure, and a base between its first and second ends that is adjacent to the base of the first extending post.

9. The stent frame of claim 1, further comprising a covering material extending 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.

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

11. The stent frame of claim 1, wherein the dome-type structure comprises a series of wires.

12. The stent frame of claim 11, wherein distal ends of the series of wires are connected to a maintaining structure that maintains the series of wires in a dome-type shape.

13. The stent frame of claim 1, wherein the first portion extends radially outward relative to the longitudinal axis of the annular portion.

14. The stent frame of claim 1, wherein the first portion generally follows an outer periphery of the annular portion.

15. The stent frame of claim 1, wherein the plurality of flares of the atrial portion are configured to engage a first side of an annulus in which the stent frame is implanted, and wherein the at least one flare of the ventricular portion is configured to engage a second side of the annulus that is opposite of the first side.

16. A valve prosthesis comprising:

a stent frame comprising;

an annular portion comprising;

a longitudinal axis,

at least two extending posts, and

a generally sinusoidal structure of peaks and valleys between each of the at least two extending posts, the generally sinusoidal structure having first and second ends,

wherein the generally sinusoidal structure has a generally constant height and

wherein, in an expanded state, each of the extending posts extends in a direction that is generally parallel to the longitudinal axis and has a height that is greater than the generally constant height between each of the extending posts of the generally sinusoidal structure of the annular portion;

an atrial portion extending from the first end of the generally sinusoidal structure, wherein the atrial portion comprises;

a plurality of flares that extend radially outward relative to the longitudinal axis of the annular portion as the plurality of flares extend away from the annular portion, and

a dome-type structure extending from the plurality of flares;

a ventricular portion extending from the second end of the generally sinusoidal structure, wherein the ventricular portion comprises;

at least one flare that extends radially outward relative to the longitudinal axis of the annular portion, and

a first portion that extends from the second end of the generally sinusoidal structure, the first portion having a height that is smaller than a height of the at least one flare of the ventricular portion; and

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

wherein the extending posts of the annular portion are aligned with commissures of the prosthetic valve.

17. The valve prosthesis of claim 16, wherein the dome-type structure comprises a series of wires.

18. The valve prosthesis of claim 17, wherein distal ends of the series of wires are connected to a maintaining structure that maintains the series of wires in a dome-type shape.

19. The valve prosthesis of claim 16, wherein the first portion extends radially outward relative to the longitudinal axis of the annular portion.

20. The valve prosthesis of claim 16, wherein the first portion generally follows an outer periphery of the annular portion.

21. The valve prosthesis of claim 16, wherein the plurality of flares of the atrial portion are configured to engage a first side of an annulus in which the stent frame is implanted, and wherein the at least one flare of the ventricular portion is configured to engage a second side of the annulus that is opposite of the first side.

22. The valve prosthesis of claim 16, wherein:

the annular portion comprises at least three extending posts; and

the prosthetic valve further comprises a third leaflet attached to two adjacent extending posts of the at least three extending posts within the interior area of the stent frame.

23. The valve prosthesis of claim 16 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.