Stents for prosthetic heart valves

• US 10,231,832 B2
• Filed: 04/07/2017
• Issued: 03/19/2019
• 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): Ganesan, Suba
• Application Number:
  US15/482,032
• Publication Number:
  US 20170224478A1
• Time in Patent Office: 711 Days
• 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, a proximal end, a distal end, an outer surface comprising a concave saddle area between the proximal and distal ends, a first row of a first plurality of adjacent V-shaped structures distal of the concave saddle area that extend from each other around a first circumference of the stent structure, and a second row of a second plurality of adjacent V-shaped structures proximal of the concave saddle area that extend from each other around a second circumference of the stent structure, wherein the first row of the plurality of adjacent V-shaped structures is proximal of the distal end of the stent structure;

a first barb extending proximally from the first row of V-shaped structures, wherein the first barb extends over at least a portion of the concave saddle area of the stent structure;

a second barb extending distally from the second row of the plurality of V-shaped structures, wherein the second barb extends from a location distal of the proximal end 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 the first barb extends outward from the outer surface of the stent structure.

3. The stented valve of claim 1, further comprising a first row of diamond-shaped structures, wherein the first row of V-shaped structures forms a portion of the first row of diamond-shaped structures.

4. The stented valve of claim 3, wherein the first row of diamond-shaped structures comprises a first plurality of stent crowns disposed at a distal end of the stent structure.

5. The stented valve of claim 1, wherein the first barb comprises a distal end that is spaced from the outer surface of the stent structure.

6. The stented valve of claim 1, wherein the first barb comprises a tip that is sharp enough to penetrate tissue.

7. The stented valve of claim 1, wherein the first barb comprises a first plurality of barbs extending proximally from the first row of the plurality of V-shaped structures and spaced from each other around the periphery of the outer surface of the stent structure.

8. The stented valve of claim 1, wherein a diameter of the first circumference and a diameter of the second circumference are both greater than a diameter of the concave saddle area.

9. The stented valve of claim 1, wherein the first barb extends at an angle away from the longitudinal axis of the stent structure.

10. The stented valve of claim 1, wherein the first barb extends from a junction of wire segments of the first row of the plurality of V-shaped structures.

11. The stented valve of claim 10, wherein the junction is at a proximal end of the first row of the plurality of V-shaped structures.

12. The stented valve of claim 1, wherein the second barb extends from a distal end of the second row of the plurality of V-shaped structures.

13. The stented valve of claim 1, wherein the second barb extends from a junction of wire segments of the second plurality of V-shaped structures.

14. The stented valve of claim 1, wherein the second row of the plurality of V-shaped structures is disposed at a proximal end of the stent structure.

15. The stented valve of claim 1, wherein the second barb comprises a second plurality of barbs extending distally from the second row of the plurality of V-shaped structures and spaced from each other around the periphery of the outer surface of the stent structure.

16. A stented valve comprising:

a stent structure comprising a generally tubular body portion, an interior area, a longitudinal axis, an inflow end, an outflow end, an outer surface comprising a concave saddle area between the inflow and outflow ends, a first row of a first plurality of adjacent V-shaped structures disposed towards the outflow end relative to the concave saddle area that extend from each other around a first circumference of the stent structure, and a second row of a second plurality of adjacent V-shaped structures disposed towards the inflow end relative to the concave saddle area that extend from each other around a second circumference of the stent structure, wherein the first row of the plurality of adjacent V-shaped structures is disposed spaced from the outflow end of the stent structure;

a first plurality of barbs extending towards the inflow end from the first row of V-shaped structures;

a second plurality of barbs extending towards the outflow end from the second row of V-shaped structures, wherein the second plurality of barbs extend from an outflow end of the second row of V-shaped structures;

wherein at least one the first plurality of barbs or the second plurality of barbs extends 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.

17. The stented valve of claim 16, wherein the first plurality of barbs extend from an inflow end of the first row of V-shaped structures.

18. The stented valve of claim 16, wherein the second row of V-shaped structures is disposed at the inflow end of the stent structure.