Filament Based Prosthesis

• US 20060265054A1
• Filed: 07/28/2006
• Published: 11/23/2006
• Est. Priority Date: 05/29/2003
• Status: Abandoned Application

• Current Assignee: Robert A Van Tassel, Robert Seth Schwartz, Skott E. Greenhalgh, Tom Molz
• Original Assignee: Robert A Van Tassel, Robert Seth Schwartz, Skott E. Greenhalgh, Tom Molz
• Inventors: Molz, Tom, Schwartz, Robert S., Van Tassel, Robert A., Greenhalgh, Skott E.
• Application Number:
  US11/460,911
• Publication Number:
  US 20060265054A1
• Time in Patent Office: Days
• US Class Current: 623/1.310
• CPC Class Codes: A61F 2/01 Filters implantable into blood vessels
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/2481 Devices outside the heart wall, e.g. bags, strips or bands
• CPC Class Codes: A61F 2/88 the wire-like elements formed as helical or spiral coils forming a net-like or mesh-like structure A61F2/90
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2002/061 provided with means for allowing access to secondary lumens
• CPC Class Codes: A61F 2002/072 Encapsulated stents, e.g. wire or whole stent embedded in lining
• CPC Class Codes: A61F 2210/0004 bioabsorbable
• CPC Class Codes: A61F 2230/005 Rosette-shaped, e.g. star-shaped
• CPC Class Codes: A61F 2230/0078 hyperboloidal
• CPC Class Codes: A61F 2230/008 paraboloidal

Abstract

The present invention includes a prosthesis device composed of a plurality of filaments engaged together to self expand against the inner surface of a vessel. In this respect a pocket is created between the prosthesis and the vessel walls which prevent plaque and other debris from escaping downstream to potentially cause complications.

Claims

1. A prosthesis for trapping undesired particles in a body lumen comprising:

a generally tubular body having a contracted state and an enlarged state;

said generally tubular body being comprised of a plurality of microfilaments that interconnect to create a pore size no greater than about 500 microns substantially along the length of said generally tubular body;

said generally tubular body being self expandable from said contracted state to said enlarged state; and

,

said generally tubular body being sufficiently flexible such that said tubular body conforms to a contour of an inner surface of said body lumen.

2. A prosthesis according to claim 1, wherein said plurality of microfilaments comprises a plurality of woven microfilaments.

3. A prosthesis according to claim 1, wherein said plurality of microfilaments comprises a plurality of braided microfilaments.

4. A prosthesis according to claim 1, wherein said plurality of microfilaments comprises a plurality of knitted microfilaments.

5. A prosthesis according to claim 1, wherein said plurality of microfilaments comprises a plurality of sputtered microfilaments

6. A prosthesis according to claim 1, wherein said generally tubular body has two ends, at least one of which being expandable to a greater diameter than a central region of said generally tubular body.

7. A prosthesis according to claim 6, wherein said at least one end has a flared shape in said enlarged state of said tubular body.

8. A prosthesis according to claim 1, wherein said microfilaments are bioresorbable.

9. A prosthesis according to claim 8, wherein said microfilaments are bioresorbable such that increased blood flow through said microfilaments at a location of a lumen side branch accelerates the rate of bioresorbtion of said micrcofilaments at said location.

10. A prosthesis according to claim 1, wherein generally tubular body is at least partially loaded with a drug.

11. A prosthesis according to claim 1, wherein a distal end of said generally tubular body has a cone shape when said generally tubular body is in said contracted state.

12. A prosthesis according to claim 1, wherein said generally tubular body includes a plurality of micropleats.

13. A prosthesis according to claim 12, wherein said micropleats extend longitudinally along an axis of said generally tubular body.

14. A prosthesis according to claim 12, wherein said micropleats extend circumferentially along an axis of said generally tubular body.

15. A prosthesis according to claim 1, wherein said generally tubular body in said contracted state has a ribbon configuration wherein gaps exist between curls of said ribbon and wherein said generally tubular body in said expanded state has a ribbon configuration wherein no gaps exist between said curls of said ribbon.

16. A prosthesis according to claim 1, further comprising a stent disposed internally to said generally tubular body.

17. A prosthesis according to claim 16, wherein said stent is integral with said generally tubular body.

18. A prosthesis according to claim 16, wherein said a length of said generally tubular body is longer than said stent.

19. A prosthesis according to claim 16, wherein said generally tubular body and said stent are constrained in said contracted state with breakable filaments.

20. A prosthesis according to claim 1, further comprising at least one pocket disposed circumferentially on said generally tubular body, said pocket sized to receive a stent.