ANCHORING STRUCTURE WITH CONCAVE LANDING ZONE

• US 20100100176A1
• Filed: 10/21/2009
• Published: 04/22/2010
• Est. Priority Date: 10/06/2003
• Status: Active Grant

• Current Assignee: Medtronic ATS Medical, Inc. (Medtronic Plc)
• Original Assignee: ATS Medical, Inc. (Medtronic Plc)
• Inventors: Malewicz, Andrzej M., Elizondo, David, Weston, Matthew W., Myers, Keith E.
• Granted Patent: US 9,579,194 B2
• Time in Patent Office: Days
• US Class Current: 623/2.380
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61F 2230/00 Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
• CPC Class Codes: A61F 2230/0013 Horseshoe-shaped, e.g. crescent-shaped, C-shaped, U-shaped
• CPC Class Codes: A61F 2230/0054 V-shaped
• CPC Class Codes: A61F 2230/0065 toroidal, e.g. ring-shaped, doughnut-shaped

Abstract

A method and device for reducing paravalvular leakage upon implantation of a replacement heart valve is provided. The valve assembly includes a tissue or bioprosthetic heart valve attached to an anchoring structure. The anchoring structure includes an inlet rim that is substantially C-shaped in cross section to form a concave landing zone. The anchoring structure self-seats when implanted in the sinus of a patient with the proximal and distal ends of the C-shaped inlet rim pushed against the aorta to effectively prevent paravalvular leakage.

Claims

1. An anchoring structure comprising:

a substantially tubular body having an inflow end and an outlet end;

an inflow rim formed with said tubular body at the inflow end, said inflow rim including a substantially C-shaped in cross section concave landing zone.

2. The anchoring structure of claim 1 wherein said inflow rim comprises a single rail.

3. The anchoring structure of claim 1 wherein said inflow rim comprises a double rail including a distal inflow ring and a proximal inflow ring.

4. The anchoring structure of claim 3 wherein said distal inflow ring and said proximal inflow ring are configured in a sinusoidal wave pattern forming a plurality of peaks and a plurality of troughs.

5. The anchoring structure of claim 4 wherein at least one of said plurality of peaks of said proximal inflow ring is operably connected with a trough of at least one of said plurality of troughs of said distal inflow ring.

6. The anchoring structure of claim 1 further comprising a plurality of finger elements extending axially from said inflow rim.

7. The anchoring structure of claim 3 further comprising a plurality of finger elements extending axially from said proximal inflow ring and said distal inflow ring.

8. The anchoring structure of claim 1 further comprising an outflow rim having at least one rail, said outflow rim operably connected with said tubular body.

9. The anchoring structure of claim 8 wherein said outflow rim includes a substantially C-shaped in cross section concave landing zone.

10. The anchoring structure of claim 1 wherein said inflow rim comprises a triple rail including a distal inflow ring operably connected to a central inflow ring and a proximal inflow ring operably connected to said central inflow ring.

11. The anchoring structure of claim 10 wherein said distal inflow ring, said central inflow ring and said proximal inflow ring are configured in a sinusoidal wave pattern forming a plurality of peaks and a plurality of troughs.

12. The anchoring structure of claim 11 wherein said peaks of said distal inflow ring and operably connected to the troughs of said central inflow ring and said peaks of central inflow ring are operably connected to the troughs of said proximal inflow ring.

13. The anchoring structure of claim 1 further comprising a plurality of longitudinal supports posts connecting said inflow and outflow rims.

14. The anchoring structure of claim 13 wherein said support posts include a substantially paddle-shaped blade having an axial slot therethrough and an elongated vertical member.

15. The anchoring structure of claim 14 wherein said elongated vertical member is connected to said inflow rim and said blade is connected to said outflow rim.

16. The anchoring structure of claim 15 further comprising a bioprosthetic heat valve including at least two commissural tabs operably coupled with said blade.

17. The anchoring structure of claim 13 wherein said plurality of longitudinal support posts comprise two support posts.

18. The anchoring structure of claim 13 wherein said plurality of longitudinal support posts comprise three support posts.