VASCULAR IMPLANTS AND METHODS OF FABRICATING THE SAME

• US 20170196714A1
• Filed: 11/21/2016
• Published: 07/13/2017
• Est. Priority Date: 02/09/2007
• Status: Active Grant

• Current Assignee: Taheri Laduca LLC
• Original Assignee: Taheri Laduca LLC
• Inventors: ALAVAR, Frederich A.L., LADUCA, Robert C., ARNAULT DE LA MENARDIERE, Brice, LADUCA, Paul A., LASALLE, Carol M.
• Granted Patent: US 10,639,176 B2
• Time in Patent Office: Days
• CPC Class Codes: A61F 2/04 Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts A61F2/18, A61F2/20 take precedence; devices, other than stent-grafts, providing patency to, or preventing collapsing of, tubular structures of the body other than stent-grafts, e.g. stents A61F2/82; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95
• CPC Class Codes: A61F 2/07 Stent-grafts
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/2436 Deployment by retracting a sheath
• CPC Class Codes: A61F 2/2451 Inserts in the coronary sinus for correcting the valve shape
• CPC Class Codes: A61F 2/848 having means for fixation to the vessel wall, e.g. barbs
• CPC Class Codes: A61F 2/856 Single tubular stent with a side portal passage
• 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 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: A61F 2002/8483 Barbs
• CPC Class Codes: A61F 2210/0014 using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61F 2220/0033 made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
• CPC Class Codes: A61F 2220/0041 using additional screws, bolts, dowels or rivets, e.g. connecting screws
• CPC Class Codes: A61F 2220/0066 stapled
• 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 2250/0006 for adjusting angular orientation
• CPC Class Codes: A61F 2250/0007 for adjusting length
• CPC Class Codes: A61F 2250/001 for adjusting a diameter

Abstract

The present invention is directed to vascular implants and methods for fabricating the same. The implantable devices include but are not limited to stents, grafts and stent grafts. In many embodiments, the devices include one or more side branch lumens interconnected with the main lumen.

Claims

1. An implantable stent for use in a vessel or tubular structure comprising:

a unitary structure having a main lumen and at least one side branch lumen, wherein the main lumen and the side branch lumen have a pattern of interconnected cells, wherein the size of the interconnected cells varies along a length of the structure, and wherein an ankle between the at least one side branch lumen and the main lumen is adjustable.

2. The implantable stent of claim 1, wherein the unitary structure comprises one or more sections having cells having a first size and one or more other sections having cells having a second size different from the first size.

3. The implantable stent of claim 1, wherein the main lumen has at least one section of smaller cells adjacent at least one side branch lumen.

4. The implantable stent of claim 1, wherein a first portion of the stent has a first thickness and a second portion of the stent has a second thickness different from the first thickness.

5. The implantable stent of claim 1, wherein a first or second end of the main lumen has a thickness greater than another portion of the main lumen.

6. The implantable stent of claim 1, wherein the stent is configured to be attached to a sensor or a valve.

7. The implantable stent of claim 1, further comprising a graft material, wherein the graft material is adjacent at least a portion of the main lumen and at least a portion of the at least one side branch lumen, and wherein the graft material has ridges and grooves.

8. The implantable stent of claim 7, wherein the ridges and grooves extend within or around at least a portion of a circumference of the main lumen and at least one of the at least one side branch lumen.

9. The implantable stent of claim 7, wherein the ridges and grooves form a sine wave pattern or a square wave pattern on a surface of the graft material.

10. An implantable stent for use in a vessel or tubular structure comprising:

interconnected cells forming a main lumen and at least one side branch lumen, wherein an angle between the at least one side branch lumen and the main lumen is adjustable, and wherein the stent has one or more sections having cells having a first size and one or more other sections having cells having a second size different from the first size.

11. The implantable stent of claim 10, wherein the main lumen has at least one section of smaller cells relative to cells of at least one side branch lumen, wherein the at least one side branch lumen comprises two side branch lumens, and wherein at least a portion of the at least one section of smaller cells is between the two side branch lumens.

12. The implantable stent of claim 10, wherein the cell size of the at least one side branch lumens is reduced in the distal direction.

13. The implantable stent of claim 10, wherein a first or second end of the main lumen has a thickness greater than another portion of the main lumen;

and/or

wherein the stent is configured to be attached to a sensor or a valve.

14. The implantable stent of claim 10, further comprising a graft material, wherein the graft material is adjacent at least a portion of the main lumen and at least a portion of the at least one side branch lumen, and wherein the graft material has ridges and grooves.

15. The implantable stent of claim 15, wherein the ridges and grooves extend within or around at least a portion of a circumference of the main lumen and at least one of the at least one side branch lumen, and wherein the ridges and grooves extend in a longitudinal direction along at least one of the main lumen and at least one of the at least one side branch lumen.

16. An implantable stent for use in a vessel or tubular structure comprising:

interconnected struts forming a main lumen and at least one side branch lumen, wherein an angle between the at least one side branch lumen and the main lumen is adjustable, wherein the main lumen has cells having a first size, and wherein at least one side branch lumen has cells having a second size different from the first size.

17. The implantable stent of claim 16, wherein the main lumen has at least one section of smaller cells adjacent at least one side branch lumen.

18. The implantable stent of claim 16, wherein the cell size of the at least one side branch lumens gets smaller in the distal direction, and wherein the stent comprises stainless steel, elgiloy, tungsten, platinum, or NITINOL.

19. The implantable stent of claim 16, further comprising a graft material, wherein the graft material is adjacent at least a portion of the main lumen and at least a portion of the at least one side branch lumen, wherein the graft material has ridges and grooves, and wherein the ridges and grooves extend within or around at least a portion of a circumference of the main lumen and at least one of the at least one side branch lumen.

20. The implantable stent of claim 16, wherein a first or second end of the main lumen has a thickness greater than another portion of the main lumen, and/or

wherein the stent is configured to be attached to a sensor or a valve.