Fixation band for affixing a prosthetic heart valve to tissue

• US 6,846,325 B2
• Filed: 09/07/2001
• Issued: 01/25/2005
• Est. Priority Date: 09/07/2000
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Viacor, Inc.
• Inventors: Liddicoat, John R.
• Primary Examiner(s): McDermott, Corrine
• Assistant Examiner(s): Matthews, William
• Application Number:
  US09/949,061
• Publication Number:
  US 20020055774A1
• Time in Patent Office: 1,236 Days
• Field of Search: 623/2.38, 623/2.4, 623/2.1, 623/2.11, 623/2.41
• US Class Current: 623/2.4
• 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 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61F 2250/0069 Sealing means

Abstract

A prosthetic heart value assembly comprising a prosthetic heart valve and a fixation band. The fixation band comprises a tubular frame and a tube. The tubular frame comprises longitudinally-extending members having hooks on their distal ends and fixation means on proximal ends, and a stabilizing laterally-extending member. The tube is positioned inside the longitudinally-extending members, a distal end of the tube being everted over the hooks. A sewing cuff is formed in the tube. The prosthetic valve is secured to the fixation band by suturing a prosthetic valve sewing cuff to a fixation band sewing cuff. The prosthetic valve and fixation band are advanced to the valve'"'"'s seat. The fixation band'"'"'s hooks are passed through the wall of the everted tube and into surrounding tissue and the fixation band'"'"'s fixation means are deployed.

Claims

1. A prosthetic heart valve assembly comprising:

a prosthetic heart valve comprising

a frame;

at least one leaflet adapted to open and close relative to said frame; and

a sewing cuff attached to said frame; and

a fixation band for affixing said prosthetic heart valve to tissue, the fixation band comprising;

a tube defining a proximal end, a distal end, and a central lumen;

a tubular frame comprising

a plurality of longitudinally-extending members, each having a hook at a distal end thereof; and

at least one laterally-extending member fixed to said longitudinally-extending members, said laterally-extending member extending circumferentially of said longitudinally-extending members;

said tubular frame being disposed on an outside wall of said tube;

the distal end of said tube being everted around the distal end of said tubular frame and extending proximally along said tubular frame and over the hooks to be engaged thereby; and

a band sewing cuff portion disposed on said tube and exposed by the eversion of the distal end of said tube;

wherein said band sewing cuff is adapted for attachment to the prosthetic heart valve by suturing of said band sewing cuff to said heart valve sewing cuff.

2. A prosthetic heart valve assembly according to claim 1 wherein said tube is flared outwardly at said distal end of said tube.

3. A prosthetic heart valve assembly according to claim 1 wherein said tube comprises a radially-extending flange at its distal end.

4. The assembly in accordance with claim 1 wherein proximal ends of said longitudinally-extending members are provided with fixation means for securing proximal ends of said longitudinally-extending members to surrounding tissue.

5. The assembly according to claim 4 wherein said fixation means are actuated by bending the same radially outwardly so as to engage the surrounding tissue.

6. The assembly according to claim 4 and further comprising a restraining device, wherein said fixation means are adapted to be deployed by removing the restraining device, whereby the fixation means automatically deploy against the surrounding tissue.