ANCHORING DEVICE FOR A PROSTHETIC HEART VALVE

• US 20150045881A1
• Filed: 01/10/2013
• Published: 02/12/2015
• Est. Priority Date: 01/13/2012
• Status: Active Grant

• Current Assignee: Assistance Publique - Hopitaux De Paris
• Original Assignee: Assistance Publique - Hopitaux De Paris
• Inventors: Lim, Pascal
• Granted Patent: US 9,414,910 B2
• Time in Patent Office: Days
• US Class Current: 623/2.38
• CPC Class Codes: A61F 2/2409 Support rings therefor, e.g. for connecting valves to tissue annuloplasty rings A61F2/2442
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2210/0014 using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2210/0076 multilayered, e.g. laminated structures
• CPC Class Codes: A61F 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61F 2230/0065 toroidal, e.g. ring-shaped, doughnut-shaped
• CPC Class Codes: A61F 2230/0078 hyperboloidal
• CPC Class Codes: A61F 2250/0069 Sealing means
• CPC Class Codes: A61F 2250/007 O-rings
• CPC Class Codes: A61L 2430/20 for reconstruction of the heart, e.g. heart valves
• CPC Class Codes: A61L 27/04 Metals or alloys
• CPC Class Codes: A61L 27/34 Macromolecular materials

Abstract

The invention relates to an anchoring device (1, 100) for implanting a prosthetic heart valve at a valve annulus of a patient. According to the invention, such a device comprises: a compressible and expandable sealed ring member (2, 200); a compressible and expandable anchoring element (3, 300) having a ventricular skirt (33, 303) and an atrial skirt (31, 301) linked by a tubular portion (32, 302); said ring member (2, 200) surrounding said tubular portion (32, 302) of said anchoring element (3, 300) and said anchoring element clamping said prosthetic heart valve.

Claims

1. An anchor device (1, 100) for implanting a heart valve prosthesis at a patient'"'"'s valve annulus, said device comprising:

a leakproof toroidal element (2, 200) that is compressible and expandable; and

an anchor element (3, 300) presenting a compressible and expandable mesh structure together with a ventricular collar (33, 303) and an auricular collar (31, 301) connected together by a tubular portion (32, 302);

said toroidal element (2, 200) surrounding said tubular portion (32, 302) of said anchor element (3, 300) and said anchor element encircling said heart valve prosthesis.

2. A device according to claim 1, characterized in that said toroidal element (2, 200) presents a mesh structure covered in a film (22, 202) of polymer material.

3. A device according to claim 2, characterized in that said polymer material is selected from:

silicone, polytetrafluoroethylene (PTFE), polyurethane, polyamide, polyester, fluorinated resin, or by a combination of at least two of these materials.

4. A device according to claim 1, characterized in that said mesh structure is made at least of a metal material having shape memory or a polymer material having shape memory.

5. A device according to claim 1, characterized in that said tubular portion (32, 302) of said anchor element (3, 300) presents a height h less than the minor diameter d of said toroidal element (2, 200).

6. A device according to claim 1, characterized in that said toroidal element (2, 200) presents, over at least a portion of its external periphery, a zone of weakness (24, 204) against radial compression when in situation.

7. A device according to claim 2, characterized in that said zone of weakness (24, 204) against radial compression when in situation comprises a discontinuity in the mesh constituting said mesh structure of said toroidal element (2, 200).

8. A device according to claim 1, characterized in that said toroidal element (2, 200) presents, over at least a portion of the surface defining its hole, a zone (23, 203) of increased resistance to radial compression when in situation.

9. A device according to claim 2, characterized in that said zone (23, 203) of increased resistance to radial compression when in situation comprises a mesh that is denser than the remainder of the mesh constituting said mesh structure of said toroidal element (2, 200).

10. A device according to claim 8, characterized in that said zone of increased resistance to radial compression when in situation comprises a reinforcing band (23, 203).

11. A device according to claim 1, characterized in that said auricular collar (31) and said ventricular collar (33) of said anchor element (3) are symmetrical.

12. A device according to claim 1, characterized in that said auricular collar (301) and said ventricular collar (303) of said anchor element (300) are asymmetrical.

13. A device according to claim 1, characterized in that said toroidal element (2, 200) presents an external diameter D2 lying in the range 30 mm to 70 mm.

14. A device according to claim 1, characterized in that each of said collars (31, 33, 301, 303) of said anchor element (3, 300) presents an external diameter D4 lying in the range 40 mm to 70 mm.

15. A device according to claim 1, characterized in that it further includes stabilization hooks (5, 500).

16. A device according to claim 15, characterized in that at least some of said hooks (5, 500) are distributed on the external diameter D2 of said toroidal element (2, 200).

17. A device according to claim 15, characterized in that at least some of said stabilization hooks (5, 500) are provided on at least one of said auricular collar (31, 301) and said ventricular collar (33, 303).