Disk-Based Valve Apparatus and Method for the Treatment of Valve Dysfunction

• US 20140025164A1
• Filed: 09/20/2013
• Published: 01/23/2014
• Est. Priority Date: 03/21/2011
• Status: Active Grant

• Current Assignee: Cephea Valve Technologies, Inc. (Abbott Laboratories Incorporated)
• Original Assignee: Cephea Valve Technologies, Inc. (Abbott Laboratories Incorporated)
• Inventors: Granada, Juan F., Montorfano, Matteo, Chieffo, Alaide
• Granted Patent: US 8,728,155 B2
• Time in Patent Office: Days
• US Class Current: 623/2.37
• 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 2/2445 Annuloplasty rings in direct contact with the valve annulus
• CPC Class Codes: A61F 2230/005 Rosette-shaped, e.g. star-shaped
• CPC Class Codes: A61F 2230/0058 X-shaped
• CPC Class Codes: A61F 2230/0065 toroidal, e.g. ring-shaped, doughnut-shaped
• CPC Class Codes: A61F 2230/0078 hyperboloidal
• CPC Class Codes: A61F 2250/0039 differing in diameter

Abstract

The present invention comprises a novel and safer mechanism of deployment using a self-positioning, self-centering, and self-anchoring method. To embody the present invention, a disk-based valve apparatus allowing the repositioning and retrieval of the implantable valve while working on a dysfunctional valve structure is disclosed. The disk-based valve apparatus may comprise one or more disks, either proximal or distal, a valve-housing component and a valve component. The one or more disks may be either proximal or distal, may be either connected to each other or disconnected from each other and may either be symmetrical or have different shapes and dimensions. The disk-based valve apparatus may be self anchoring, such as anchored by pressure from the one or more disk, or may be anchored using any anchoring.

Claims

1. A valve prosthesis having a constrained shape and an expanded shape, the valve prosthesis comprising a replacement valve attached to an anchor, the anchor comprising:

a proximal portion adapted and configured to self-expand from the constrained shape into the expanded shape, the proximal portion comprising a plurality of wire petals of shape memory material;

distal portion adapted and configured to self-expand from the constrained shape to the expanded shape; and

a central portion disposed between, and connected to, the proximal portion and the distal portion, the central portion have a diameter in the expanded shape smaller than diameters of the proximal portion and the distal portion in their expanded shapes, the central portion being adapted to self-expand to move the proximal portion and the distal portion toward each other to compress native cardiac tissue between them.

2. The valve prosthesis of claim 1 wherein the plurality of wire petals of the proximal portion are disposed in an overlapping arrangement.

3. The valve prosthesis of claim 1 wherein the distal portion comprises a plurality of wire petals of shape memory material.

4. The valve prosthesis of claim 3 wherein the plurality of wire petals of the proximal portion are disposed in an overlapping arrangement and the plurality of wire petals of the distal portion are disposed in an overlapping arrangement.

5. The valve prosthesis of claim 1 wherein the distal portion comprises a notch or gap adapted to accommodate cardiac structures adjacent the native valve tissue.

6. The valve prosthesis of claim 1 wherein the anchor further comprises a plurality of hooks.

7. A method of deploying a prosthetic cardiac valve in a patient, the method comprising:

inserting the prosthetic cardiac valve within a dysfunctional mitral valve in the patient'"'"'s heart;

permitting a distal portion of a valve anchor to self-expand;

pulling the distal portion of the valve anchor proximally into a plane of the dysfunctional mitral valve;

permitting a proximal portion of the valve anchor to self-expand on an opposite side of the dysfunctional mitral valve; and

permitting a central portion of the valve anchor to self-expand within the dysfunctional mitral valve to move the distal and proximal portions of the valve anchor toward each other to compress the dysfunctional mitral valve.

8. The method of claim 7 wherein the step of permitting the proximal portion to self-expand comprises permitting the proximal portion to self-expand into a disk shape.

9. The method of claim 7 further comprising anchoring the anchor in the mitral valve with a hook.