Profile reduction of valve implant

• US 7,935,144 B2
• Filed: 10/19/2007
• Issued: 05/03/2011
• Est. Priority Date: 10/19/2006
• Status: Active Grant

• Current Assignee: DFM, LLC (PDL BioPharma, Inc.)
• Original Assignee: Direct Flow Medical, Inc.
• Inventors: Uong, Do D., Robin, Kevin
• Primary Examiner(s): Ho; (Jackie) Tan-Uyen T
• Assistant Examiner(s): Ou; Jing Rui
• Application Number:
  US11/875,768
• Publication Number:
  US 20080200980A1
• Time in Patent Office: 1,292 Days
• Field of Search: 623/2.11, 623 214- 219, 623/1.11, 623/1.12, 623/2.1, 623/904, 606/151
• US Class Current: 623/2.11
• 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 2/2427 Devices for manipulating or deploying heart valves during implantation
• CPC Class Codes: A61F 2/2436 Deployment by retracting a sheath
• CPC Class Codes: A61F 2220/0008 Fixation appliances for connecting prostheses to the body
• CPC Class Codes: A61F 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61F 2220/0075 sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable
• CPC Class Codes: A61F 2230/0078 hyperboloidal
• CPC Class Codes: A61F 2250/0003 having an inflatable pocket filled with fluid, e.g. liquid or gas
• CPC Class Codes: A61F 2250/0059 temporary

Abstract

A method for reducing an axial profile of a valve implant includes providing a valve implant having a longitudinal axis and a delivery catheter having a central axis and a distal receiving section. The method further includes helically rolling the valve implant around a rolling axis that is offset at an angle of about 15 degrees to about 60 degrees with respect to the longitudinal axis to form a rolled valve implant having a rolled axis, where the rolled axis is the same as the rolling axis. The method further includes aligning the rolled axis of the rolled valve implant with the central axis of the delivery catheter. The method further includes inserting the rolled valve implant into the distal receiving section of the delivery catheter.

Claims

1. A method for reducing an axial profile of a valve implant, the method comprising:

providing a tubular valve implant, the tubular valve implant having a longitudinal axis, and a delivery catheter, the delivery catheter having a central axis and a distal receiving section;

wherein the tubular valve implant comprises an inflatable body comprising at least one inflation channel that forms, at least in part, a distal inflatable toroidal structure and a proximal inflatable toroidal structure, and a tissue valve coupled to the inflatable body;

the tubular valve implant further comprises at least one inflation valve in communication with the at least one inflation channel;

helically rolling the tubular valve implant around a rolling axis that is offset at an angle of about 15 degrees to about 60 degrees with respect to the longitudinal axis to form a rolled valve implant having a rolled axis, the rolled axis the same as the rolling axis;

aligning the rolled axis of the rolled valve implant with the central axis of the delivery catheter; and

inserting the rolled valve implant into the distal receiving section of the delivery catheter.

2. The method of claim 1, wherein the at least one inflation valve is located on the proximal portion of the rolled valve implant.

3. The method of claim 2, wherein the at least one inflation valve is coupled to at least one inflation tube extending through the delivery catheter.

4. The method of claim 1, wherein the tissue valve is positioned generally between the distal and proximal inflatable toroidal structures.

5. The method of claim 1, wherein the at least one inflation valve comprises a first inflation valve in communication with the distal inflatable toroidal structure and a second inflation valve in communication with the proximal inflatable toroidal structure.

6. The method of claim 5, wherein the first and the second inflation valves are located on the proximal portion of the rolled valve implant.

7. The method of claim 6, wherein each of the first and the second inflation valves is coupled to an inflation tube extending through the delivery catheter.

8. The method of claim 1, wherein the tubular valve implant further comprises an inflatable intermediate support in between the distal and proximal inflatable toroidal structures, the inflatable intermediate support disposed around the circumference of the inflatable body.

9. The method of claim 8, wherein the inflatable intermediate support comprises a plurality of axially extending ribs.