Stents For Prosthetic Heart Valves

• US 20140100653A1
• Filed: 12/09/2013
• Published: 04/10/2014
• Est. Priority Date: 04/23/2010
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Corevalve LLC (Medtronic Plc)
• Inventors: Pellegrini, Gianfranco, Rinne, Finn, Rust, Matthew, Krivoruchko, Michael, SAVAGE, Padraig
• Granted Patent: US 9,649,191 B2
• Time in Patent Office: Days
• US Class Current: 623/2.17
• 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 2/2436 Deployment by retracting a sheath
• CPC Class Codes: A61F 2/848 having means for fixation to the vessel wall, e.g. barbs
• CPC Class Codes: A61F 2002/8483 Barbs
• CPC Class Codes: A61F 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61F 2230/0017 Angular shapes
• CPC Class Codes: A61F 2230/0054 V-shaped
• CPC Class Codes: A61F 2230/008 paraboloidal
• CPC Class Codes: A61F 2250/0039 differing in diameter

Abstract

A stented valve including a stent structure having a generally tubular body portion, an interior area, a longitudinal axis, an first end, an second end, and an outer surface; at least one outflow barb extending from the outer surface of the stent adjacent to the first end of the stent structure and toward the second end of the stent structure; at least one inflow barb extending from the outer surface of the stent adjacent to the second end of the stent structure and toward the first end of the stent structure; and a valve structure attached within the interior area of the stent structure.

Claims

1-20. -20. (canceled)

21. A stented valve comprising:

a stent structure comprising a generally tubular body portion, an interior area, a longitudinal axis, a first end, a second end, and an outer surface,

the outer surface of the stent structure comprising a concave saddle area between the first and second ends;

at least one outflow barb extending from the outer surface of the stent structure adjacent to the first end of the stent structure and toward the second end of the stent structure;

at least one inflow barb extending from the outer surface of the stent structure adjacent to the second end of the stent structure and toward the first end of the stent structure,

wherein the outflow and inflow barbs extend over at least a portion of the concave saddle area of the stent structure; and

a valve structure attached within the interior area of the stent structure, the valve structure comprising a plurality of leaflets.

22. The stented valve of claim 21, wherein each of the inflow and outflow barbs comprises a distal end that is spaced from the outer surface of the stent structure.

23. The stented valve of claim 22, wherein the distal end of each of the inflow and outflow barbs comprises a tip that is sharp enough to penetrate tissue.

24. The stented valve of claim 21, wherein each of the inflow and outflow barbs extends in a direction that is generally parallel to the longitudinal axis of the stent structure.

25. The stented valve of claim 21, wherein each of the inflow and outflow barbs extends from the outer surface of the stent structure at a junction point, and wherein the concave saddle area is located between the junction points for the inflow barbs and the junction points for the outflow barbs.

26. The stented valve of claim 21, wherein the first end of the stent structure has a diameter that is larger than a diameter of the second end of the stent structure.

27. The stented valve of claim 21, wherein the at least one inflow barb comprises a plurality of inflow barbs spaced from each other around the periphery of the outer surface of the stent structure.

29. The stented valve of claim 21, wherein the stent structure comprises a wire frame, and wherein an area adjacent to the first end of the stent structure comprises a lower wire density than an area adjacent the second end of the wire frame.

30. The stented valve of claim 29, wherein the second end of the wire frame comprises a lower wire density than the concave saddle area.

31. The stented valve of claim 21, wherein the first and second ends of the stent structure comprise a plurality of stent crowns, and wherein the number of crowns at the second end is greater than the number of crowns at the first end.

32. The stented valve of claim 31, further comprising twelve diamond-shaped structures at the second end of the stent structure and six diamond-shaped structures at the first end of the stent structure.

33. The stented valve of claim 21, wherein the first end comprises an inflow end of the stent structure, and wherein the second end comprises an outflow end of the stent structure.

34. The stented valve of claim 21, wherein a diameter of the first end and a diameter of the second end are both greater than a diameter of the concave saddle area.

35. The stented valve of claim 21, wherein each of the inflow and outflow barbs extends at an angle toward the longitudinal axis of the stent structure.

36. The stented valve of claim 21, wherein each of the inflow and outflow barbs extends at an angle away from the longitudinal axis of the stent structure.