Stented heart valve devices and methods for atrioventricular valve replacement

• US 10,736,737 B2
• Filed: 10/28/2016
• Issued: 08/11/2020
• Est. Priority Date: 01/19/2007
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Mesana, Thierry, Laske, Timothy G., Hill, Alexander J., Ryan, Timothy R.
• Primary Examiner(s): Prebilic, Paul B
• Application Number:
  US15/338,124
• Publication Number:
  US 20170065412A1
• Time in Patent Office: 1,383 Days
• Field of Search: 623 126
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/2433 using balloon catheter
• CPC Class Codes: A61F 2/82 Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents stent-grafts for tubular structures of the body other than blood vessels A61F2/04; stent-grafts for blood vessels A61F2/07; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95; for closing wounds, or holding wounds closed A61B17/04 - A61B17/115; dilators A61M29/00
• CPC Class Codes: A61F 2/852 Two or more distinct overlapping stents
• CPC Class Codes: A61F 2/958 Inflatable balloons for placing stents or stent-grafts
• CPC Class Codes: A61F 2002/065 Y-shaped blood vessels
• CPC Class Codes: A61F 2002/8486 provided on at least one of the ends
• CPC Class Codes: A61F 2210/0014 using shape memory or superelastic materials, e.g. nitinol
• 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 2230/0008 elliptical or oval
• CPC Class Codes: A61F 2230/001 Figure-8-shaped, e.g. hourglass-shaped
• CPC Class Codes: A61F 2230/0017 Angular shapes
• CPC Class Codes: A61F 2230/005 Rosette-shaped, e.g. star-shaped
• CPC Class Codes: A61F 2230/0054 V-shaped
• CPC Class Codes: A61F 2250/0018 differing in elasticity, stiffness or compressibility
• CPC Class Codes: A61F 2250/0036 differing in thickness
• CPC Class Codes: A61F 2250/0037 differing in height or in length
• CPC Class Codes: A61F 2250/0039 differing in diameter
• CPC Class Codes: A61F 2250/0064 Sets comprising a plurality of prosthetic parts of different sizes
• CPC Class Codes: A61F 2250/0069 : Sealing means

Abstract

A compressible and expandable stent assembly for implantation in a body lumen such as a mitral valve, the stent assembly including at least one stent barrel that is shaped and sized so that it allows for normal operation of adjacent heart structures. One or more stent barrels can be included in the stent assembly, where one or more of the stent barrels can include a cylinder with tapered edge.

Claims

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

a first stent comprising a first length that extends along a first longitudinal axis and a tubular structure that is compressible and expandable in a radial direction;

a second stent comprising a second length that extends along a second longitudinal axis that is less than the first length and a tubular structure that is compressible and expandable in a radial direction, wherein the first longitudinal axis is parallel to the second longitudinal axis, wherein the second stent is coupled adjacent to and extends from the first stent along a tangential line that extends in a parallel direction to the first and second longitudinal axes and in a perpendicular direction to the radial expansion direction of the first and second stents;

a first prosthetic valve disposed within the first stent; and

a second prosthetic valve disposed within the second stent.

3. The stent assembly of claim 1, wherein the first stent or the second stent includes a sealing gasket around an exterior thereof.

4. The stent assembly of claim 1, wherein the first stent or the second stent includes a sealing gasket position along an interior portion thereof.

5. The stent assembly of claim 1, further comprising a sealing gasket disposed around an exterior of the first stent and the second stent.

8. The stent assembly of claim 1, wherein a first end of the first stent is aligned with a first end of the second stent, and a second end of the first stent extends past a second end of the second stent such that the second ends of the first and second stents are offset relative to each other.

9. The stent assembly of claim 1, wherein a first end of the first stent is offset relative to a first end of the second stent and a second end of the first stent is offset relative to a second end of the second stent.

10. The stent assembly of claim 1, wherein with the stent assembly deployed at a native mitral valve with the second stent adjacent to an anterolateral portion of the native mitral valve and the first stent deployed adjacent to a posteromedial portion of the native mitral valve, the second length is sufficiently short to minimize interference with an adjacent native aortic valve.

11. The stent assembly of claim 1, wherein the first stent includes a curvilinear surface facing away from the second stent and the second stent includes a curvilinear surface facing away from the first stent, and wherein the first stent includes a flat surface facing a flat surface of the second stent.

2. A compressible and expandable stent assembly for implantation in a body lumen, the stent assembly comprising:

a first stent comprising a first length that extends along a first longitudinal axis and a tubular structure that is compressible and expandable in a radial direction;

a second stent comprising a second length that extends along a second longitudinal axis that is less than the first length and a tubular structure that is compressible and expandable in a radial direction, wherein the first longitudinal axis is parallel to the second longitudinal axis, wherein the second stent is coupled adjacent to and extends from the first stent along a tangential line that extends in a parallel direction to the first and second longitudinal axes and in a perpendicular direction to the radial expansion direction of the first and second stents;

a first prosthetic valve disposed within the first stent; and

a second prosthetic valve disposed within the second stent,

wherein the tangential line along which the first and second stents are coupled to each other is parallel to the first longitudinal axis and the second longitudinal axis such that first stent has a fixed position relative to the second stent that is maintained in both a radially compressed configuration and a radially expanded configuration.

12. The stent assembly of claim 2, wherein the first stent includes a curvilinear surface facing away from the second stent and the second stent includes a curvilinear surface facing away from the first stent, and wherein the first stent includes a flat surface facing a flat surface of the second stent.

14. The stent assembly of claim 2, wherein a first end of the first stent is aligned with a first end of the second stent, and a second end of the first stent extends past a second end of the second stent such that the second ends of the first and second stents are offset relative to each other.

15. The stent assembly of claim 2, wherein a first end of the first stent is offset relative to a first end of the second stent and a second end of the first stent is offset relative to a second end of the second stent.

16. The stent assembly of claim 2, wherein with the stent assembly deployed at a native mitral valve with the second stent adjacent to an anterolateral portion of the native mitral valve and the first stent deployed adjacent to a posteromedial portion of the native mitral valve, the second length is sufficiently short to minimize interference with an adjacent native aortic valve.

6. A compressible and expandable stent assembly for implantation in a body lumen, the stent assembly comprising:

a first stent comprising a first length that extends along a first longitudinal axis and a tubular structure that is compressible and expandable in a radial direction;

a second stent comprising a second length that extends along a second longitudinal axis that is less than the first length and a tubular structure that is compressible and expandable in a radial direction, wherein the first longitudinal axis is parallel to the second longitudinal axis, wherein the second stent is coupled adjacent to and extends from the first stent along a tangential line that extends in a parallel direction to the first and second longitudinal axes and in a perpendicular direction to the radial expansion direction of the first and second stents;

a first prosthetic valve disposed within the first stent; and

a second prosthetic valve disposed within the second stent,

wherein the first stent is attached to the second stent in a radially compressed configuration.

7. The stent assembly of claim 6, wherein the first stent is attached to the second stent by bonding, adhesion, or welding.

13. The stent assembly of claim 6, wherein the first stent includes a curvilinear surface facing away from the second stent and the second stent includes a curvilinear surface facing away from the first stent, and wherein the first stent includes a flat surface facing a flat surface of the second stent.

17. The stent assembly of claim 6, wherein a first end of the first stent is aligned with a first end of the second stent, and a second end of the first stent extends past a second end of the second stent such that the second ends of the first and second stents are offset relative to each other.

18. The stent assembly of claim 6, wherein a first end of the first stent is offset relative to a first end of the second stent and a second end of the first stent is offset relative to a second end of the second stent.

19. The stent assembly of claim 6, wherein with the stent assembly deployed at a native mitral valve with the second stent adjacent to an anterolateral portion of the native mitral valve and the first stent deployed adjacent to a posteromedial portion of the native mitral valve, the second length is sufficiently short to minimize interference with an adjacent native aortic valve.