Stents for prosthetic heart valves

• US 8,623,079 B2
• Filed: 04/25/2011
• Issued: 01/07/2014
• Est. Priority Date: 04/23/2010
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Savage, Padraig, Pellegrini, Gianfranco, Rinne, Finn, Rust, Matthew, Krivoruchko, Michael
• Primary Examiner(s): Isabella, David
• Assistant Examiner(s): Ganesan, Suba
• Application Number:
  US13/093,305
• Publication Number:
  US 20110264196A1
• Time in Patent Office: 988 Days
• Field of Search: 623/1.14, 623/1.24, 623/1.3, 623/1.31, 623/1.36, 623 21- 219
• 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. A stented valve comprising:

a stent structure comprising a generally tubular body portion, an interior area, a longitudinal axis, an outflow end, an inflow end, an outer surface comprising a concave saddle area between the outflow and inflow ends, and a plurality of diamond-shaped structures at both the inflow and outflow ends, wherein the plurality of diamond-shaped structures at the inflow end comprise multiple adjacent V-shaped wire structures that extend from each other around a circumference of the inflow end of the stent structure, and wherein the plurality of diamond-shaped structures at the outflow end comprise multiple adjacent V-shaped wire structures that extend from each other around a circumference of the outflow end of the stent structure;

at least one inflow barb extending from a distal end of one of the V-shaped wire structures of the inflow end, spaced from the inflow end of the stent structure, and extending toward the outflow end of the stent structure;

at least one outflow barb extending toward the inflow end of the stent structure from an intersection point of one of the diamond shaped structures at the outflow end of the stent structure, wherein the intersection point to which the at least one outflow barb is attached is spaced from a distal edge of the outflow 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.

2. The stented valve of claim 1, wherein each of the inflow barbs comprises a distal end spaced from the concave saddle area of the stent structure.

3. The stented valve of claim 1, wherein each of the outflow barbs comprises a distal end spaced from the concave saddle area of the stent structure.

4. The stented valve of claim 1, further comprising at least one auxiliary outflow barb, wherein each auxiliary barb extends from an intersection point of one of the diamond-shaped structures that is adjacent to the plurality of diamond-shaped structures at the outflow end of the stent structure.