Multiple orifice implantable heart valve and methods of implantation

• US 8,430,927 B2
• Filed: 02/02/2009
• Issued: 04/30/2013
• Est. Priority Date: 04/08/2008
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Bonhoeffer, Philip
• Primary Examiner(s): Isabella, David
• Assistant Examiner(s): Ganesan, Suba
• Application Number:
  US12/364,246
• Publication Number:
  US 20090259292A1
• Time in Patent Office: 1,548 Days
• Field of Search: 623/2.14, 623/2.17, 623/2.11, 623/2.1, 623/2.18, 623/1.24, 623/1.26, 623/1.35, 623/1.32, 623/1.3, 623/1.5, 623 236- 241, 623/3.26
• US Class Current: 623/2.38
• CPC Class Codes: A61F 2/2409 Support rings therefor, e.g. for connecting valves to tissue annuloplasty rings A61F2/2442
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/2427 Devices for manipulating or deploying heart valves during implantation
• CPC Class Codes: A61F 2220/0008 Fixation appliances for connecting prostheses to the body
• CPC Class Codes: A61F 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61F 2230/0006 circular
• CPC Class Codes: A61F 2230/0008 elliptical or oval
• CPC Class Codes: A61F 2230/001 Figure-8-shaped, e.g. hourglass-shaped
• CPC Class Codes: A61F 2230/0032 B-shaped
• CPC Class Codes: A61F 2230/0034 D-shaped

Abstract

A surgically implantable multiple orifice heart valve having a valve frame with at least two orifices, each of which can accommodate a tissue valve. The multiple orifice heart valve includes a stent frame having a first side, an opposite second side, and multiple orifices or openings, each of which extends from the first side to the second side of the stent frame and is adjacent to at least one of the other multiple orifices or openings.

Claims

1. A stent assembly for implantation in a body lumen, the stent assembly comprising:

a stent frame comprising a first side, an opposite second side, a first opening extending through the frame from the first side to the second side, a second opening spaced from the first opening and extending through the frame from the first side to the second side, and a first intermediate strut portion positioned between the first and second openings, wherein the stent frame defines a perimeter shape differing from a perimeter shape collectively defined by the first and second openings, and wherein the stent frame has an outer shape that is compatible with a shape of a mitral valve in which it will be implanted, and wherein each of the first and second openings comprises a tissue valve.

2. The stent assembly of claim 1, wherein the intermediate strut portion is impermeable to blood flow.

3. The stent assembly of claim 1, wherein each of the first and second openings are circular.

4. The stent assembly of claim 1, wherein the frame further comprises at least two commissure posts extending from a first side of the frame and adjacent to the first opening, and at least two commissure posts extending from the first side of the frame and adjacent to the second opening.

5. The stent assembly of claim 1, wherein the size of the first opening is different from the size of the second opening.

6. The stent assembly of claim 1, wherein the stent frame has a structural strength capable of surgical implantation into a patient.

7. The stent assembly of claim 1, further comprising a third opening adjacent to and spaced from the second opening, and a second intermediate strut portion positioned between the second and third openings.

8. The stent assembly of claim 1, further comprising a first longitudinal axis extending through the first opening and a second longitudinal axis extending through the second opening, wherein the first and second longitudinal axes are generally parallel to each other.

9. The stent assembly of claim 1, further comprising a first longitudinal axis extending through the first opening and a second longitudinal axis extending through the second opening, wherein the first and second longitudinal axes are offset relative to each other.

10. The stent assembly of claim 1, wherein the first and second openings each comprise a center point, and wherein the center points of the first and second openings coincide with a central axis that extends generally across a width of the stent frame.

11. The stent assembly of claim 1, wherein the first and second openings each comprise a center point, and wherein the center points of the first and second openings are offset with respect to a central axis that extends generally across a width of the stent frame.

12. A stent assembly for implantation in a body lumen, the stent assembly comprising:

a stent frame comprising a first side, an opposite second side, and first and second commissure posts extending from the first side of the frame and positioned on generally opposite edges of the frame, a first valve attached to the first and second commissure posts, third and fourth commissure posts extending from the first side of the frame and positioned on generally opposite edges of the frame, and a second valve attached to the third and fourth commissure posts, wherein the stent frame has an outer shape that is compatible with the shape of a mitral valve in which it will be implanted.

13. The stent assembly of claim 12, further comprising a fifth commissure post positioned between the first and second valves, wherein each of the first and second valves is further attached to the fifth commissure post.

14. The stent assembly of claim 12, wherein the first valve and the second valve are oriented for simultaneous opening and closing in response to changes in fluid flow on the first and second sides of the stent frame.

15. The stent assembly of claim 14, wherein the stent frame is positionable within a mitral valve opening so that fluid can flow toward a left ventricle when the first and second valves are both in an open position, and so that fluid flow toward a left atrium is blocked when the first and second valves are both in a closed position.