Prosthetic valve for replacing an atrioventricular heart valve

• US 9,125,738 B2
• Filed: 12/22/2011
• Issued: 09/08/2015
• Est. Priority Date: 01/11/2011
• Status: Active Grant

• Current Assignee: Medira GmbH
• Original Assignee: Alexander Lauten, Hans Reiner Figulla
• Inventors: Figulla, Hans Reiner, Lauten, Alexander
• Primary Examiner(s): GHERBI, SUZETTE JAIME J
• Application Number:
  US13/979,022
• Publication Number:
  US 20140088696A1
• Time in Patent Office: 1,356 Days
• Field of Search: 623 21- 219
• US Class Current: 1/1
• CPC Class Codes: A61F 2/2412 with soft flexible valve members, e.g. tissue valves shaped like natural valves check valves with flexible valve members in general F16K15/14
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/2457 Chordae tendineae prostheses
• CPC Class Codes: A61F 2/848 having means for fixation to the vessel wall, e.g. barbs
• CPC Class Codes: A61F 2220/0008 Fixation appliances for connecting prostheses to the body
• CPC Class Codes: A61F 2230/0065 toroidal, e.g. ring-shaped, doughnut-shaped
• CPC Class Codes: A61F 2250/0039 differing in diameter

Abstract

A prosthetic valve for replacing an atrioventricular heart valve comprises an annular body (2) on which valvular cusps are fastened and which is adapted to be inserted into a valve annulus (18) of the heart (20). The annular body has a plurality of anchor elements which are connected thereto on the ventricle side and optionally other anchor elements which are connected to the annular body on the atrium side. Said anchor elements extend radially outside the annular body and substantially parallel to its outer wall.

Claims

1. A valve prosthesis for replacing an atrioventricular valve of a heart, the prosthesis comprising:

a ring-shaped body to which valvular cusps are attached and which is adapted to be inserted into a valve annulus of the heart,

a plurality of anchoring elements connected to the ring-shaped body at its ventricular side and extending at least partially radially outside and essentially parallel to the outer wall of the ring-shaped body, and

a plurality of anchoring elements connected to the ring-shaped body at its atrial side and extending outside and essentially parallel to the outer wall of the ring-shaped body

an axial distance between ends of the plurality of ventricular side anchoring elements and ends of the plurality of atrial side anchoring elements is so dimensioned that it corresponds approximately to the axial thickness of said annulus to produce a clamping action between the anchoring elements and the mitral valve leaflets or chordae

wherein the anchoring elements extend at the ventricular side of the ring-shaped body over at least half of the axial length (LR) of the ring-shaped body.

2. The valve prosthesis according to claim 1, wherein the axial length (LV) of the anchoring elements is adjustable.

3. The valve prosthesis according to claim 1, wherein the ends of the anchoring elements have a ring-shape or partial ring-shape.

4. The valve prosthesis according to claim 1, wherein the anchoring elements attached to the ring-shaped body at its atrial side extend along less than half of the axial length (LR) of the ring-shaped body.

5. The valve prosthesis according to claim 1, wherein the ends of the anchoring elements attached at the atrial side to the ring-shaped body have a ring-shape or partial ring-shape.

6. The valve prosthesis according to claim 1, wherein the ring-shaped body is frusto-conical, wherein the atrial side has a larger diameter than the ventricular side.

7. The valve prosthesis according to claim 1, wherein the ring-shaped body is made of a mesh, in particular by zig-zag-shaped wires.

8. The valve prosthesis according to claim 1 wherein the anchoring elements are attached to the ring-shaped body via two struts, respectively extending at a distance along the circumference of the ring-shaped body.

9. A valve prosthesis for replacing an atrioventricular valve of a heart, the prosthesis comprising:

a ring-shaped body to which valvular cusps are attached and which is adapted to be inserted into a valve annulus of the heart,

a plurality of anchoring elements connected to the ring-shaped body at its ventricular side and extending at least partially radially outside and essentially parallel to the outer wall of the ring-shaped body, and

a plurality of anchoring elements connected to the ring-shaped body at its atrial side and extending outside and essentially parallel to the outer wall of the ring-shaped body

an axial distance between ends of the plurality of ventricular side anchoring elements and ends of the plurality of atrial side anchoring elements is so dimensioned that it corresponds approximately to the axial thickness of said annulus to produce a clamping action between the anchoring elements and the mitral valve leaflets or chordae

wherein the ends of the anchoring elements have a ring-shape or partial ring-shape.

10. A valve prosthesis for replacing an atrioventricular valve of a heart, the prosthesis comprising:

a ring-shaped body to which valvular cusps are attached and which is adapted to be inserted into a valve annulus of the heart,

a plurality of anchoring elements connected to the ring-shaped body at its ventricular side and extending at least partially radially outside and essentially parallel to the outer wall of the ring-shaped body, and

a plurality of anchoring elements connected to the ring-shaped body at its atrial side and extending outside and essentially parallel to the outer wall of the ring-shaped body

an axial distance between ends of the plurality of ventricular side anchoring elements and ends of the plurality of atrial side anchoring elements is so dimensioned that it corresponds approximately to the axial thickness of said annulus to produce a clamping action between the anchoring elements and the mitral valve leaflets or chordae

wherein the ends of the anchoring elements attached at the atrial side to the ring-shaped body have a ring-shape or partial ring-shape.