Stented heart valve devices and methods for atrioventricular valve replacement

• US 9,510,943 B2
• Filed: 01/17/2008
• Issued: 12/06/2016
• 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., Tower, Allen, Hill, Alexander J., Ryan, Timothy R.
• Primary Examiner(s): Sweet, Thomas J
• Assistant Examiner(s): MILLER, CHERYL L
• Application Number:
  US12/009,323
• Publication Number:
  US 20080183273A1
• Time in Patent Office: 3,246 Days
• Field of Search: 623/1.37, 623/1.27, 623/1.16, 623/1.35
• US Class Current: 1/1
• 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 a tapered edge.

Claims

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

a first stent barrel including;

a first tubular structure that is compressible and expandable in a radial direction,

a first lumen extending through the first tubular structure extending from a first open end of the tubular structure to a second open end of the tubular structure, wherein a first central longitudinal axis is defined by the first lumen,

a first inner luminal surface, and

a first outer surface having a first periphery

wherein the second open end of the first stent barrel is tapered;

a second stent barrel including;

a second tubular structure that is compressible and expandable in a radial direction,

a second lumen extending through the second tubular structure extending from a first open end of the second tubular structure to a second open end of the second tubular structure, wherein a second central longitudinal axis is defined by the second lumen,

a second inner luminal surface, and

a second outer surface having a second periphery,

wherein the second open end of the second stent barrel is tapered;

a first prosthetic valve disposed within the first lumen of the first stent barrel; and

a second prosthetic valve disposed within the second lumen of the second stent barrel,

wherein the first longitudinal axis is generally parallel to the second longitudinal axis,

wherein the first stent barrel is fixed to the second stent barrel along a common area of the first outer surface and the second outer surface defining a first tangential line parallel to the first and second longitudinal axes along each of the first and second stent barrels such that first stent barrel has a fixed position relative to the second stent barrel that is maintained in both a delivery configuration and a deployed configuration.

2. The stent assembly of claim 1, wherein the first and second stent barrels each comprise a series of wires that are woven together along the first tangential line.

3. The stent assembly of claim 1, wherein the first and second stent barrels comprise separate components that are mechanically connected to each other along at least a portion of their lengths.

4. The stent assembly of claim 1, wherein a portion of at least one of the first and second stent barrels is cylindrical.

5. The stent assembly of claim 4, wherein the first and second stent barrels have generally the same cross-sectional shape and size.

6. The stent assembly of claim 1, wherein the first stent barrel has a different cross-sectional shape than the second stent barrel.

7. The stent assembly of claim 1, wherein the first stent barrel includes at least one flange portion extending at an angle from the first open end thereof.

8. The stent assembly of claim 7, wherein the at least one flange portion comprises a series of adjacent structures spaced from each other around at least a portion of the first periphery of the first stent barrel at the first open end.

9. The stent assembly of claim 7, wherein the second stent barrel includes at least one flange portion extending at an angle from the first open end thereof.

10. The stent assembly of claim 1, wherein the first and second stent barrels are radially expandable by a balloon catheter.

11. The stent assembly of claim 1, wherein the first and second stent barrels are radially self-expandable.

12. The stent assembly of claim 1, wherein the first stent barrel includes a first outer diameter in the deployed configuration and the second stent barrel includes a second outer diameter in the deployed configuration, wherein the first outer diameter and the second outer diameter are equal.

13. The stent assembly of claim 1, wherein the first prosthetic valve comprises a plurality of leaflets.

14. The stent assembly of claim 13, wherein the second prosthetic valve comprises a plurality of leaflets.