Vascular implants and methods of fabricating the same

• US 9,526,642 B2
• Filed: 02/11/2008
• Issued: 12/27/2016
• Est. Priority Date: 02/09/2007
• Status: Active Grant

• Current Assignee: Taheri Laduca LLC
• Original Assignee: Taheri Laduca LLC
• Inventors: Arnault De La Menardiere, Brice Maxime, Alavar, Frederich Albert Lim, LaDuca, Robert C., LaDuca, Paul A., LaSalle, Carol
• Primary Examiner(s): SZPIRA, JULIE ANN
• Application Number:
  US12/029,147
• Publication Number:
  US 20090043373A1
• Time in Patent Office: 3,242 Days
• Field of Search: 623/1.15, 623/1.16, 623/1.35, 623/1.4, 623/1.39, 623/1.31, 623/1.37, 606/200
• US Class Current: 1/1
• 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 main lumen comprising a structure formed from wires and having a uniform diameter and having a pattern of interconnected cells;

at least one side branch lumen formed from wires and extending laterally to the structure and where an angle between the side branch lumen and the main lumen is adjustable, and where the wires forming the main lumen and wires forming the side branch lumen are interconnected allowing the side branch lumen to be in fluid communication with the main lumen; and

a graft material coupled to the main lumen and extending along a length of the main lumen and the at least one side branch lumen, where the graft lumen includes a series of convolutions extending along a length of the main lumen and having pre-formed ridges and grooves about an entire circumference of the graft, where the series of convolutions enhances flexibility and adjustability of the implantable stent where a perimeter of a base of the at least one side branch lumen that connects to the main lumen is devoid of convolutions.

2. The implantable stem of claim 1, wherein the structure comprises one or more length sections having cells having a first size and one or more other sections having cells having a second or size, wherein the first size is greater than the second size.

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

4. The implantable stem of claim 1, wherein at least one side branch lumen comprises two side branch lumens and the at least one section of smaller cells extends between the two side branch lumens.

5. The implantable stent of claim 4, wherein the stem is made of stainless steel, elgiloy, tungsten, platinum or NITINOL.

6. The implantable stent of claim 1, wherein the cell size of the at least one side branch lumens is gradually reduced in the distal direction.

7. The implantable stem of claim 1, wherein the structure is constructed of elastically compliant wire.

12. The implantable stem of claim 1, wherein the structure comprises two side branch lumens.

13. The implantable stem of claim 1, where the size of the cells varies along a length of the structure.

8. The implantable stem of claim wherein the structure comprises a main lumen and at least one side branch lumen extending laterally to the structure.

9. The implantable stem of claim 8, wherein the cell size of the at least one side branch lumens is gradually reduced in the distal direction.

10. The implantable stent of claim 8, wherein the structure is constructed of elastically compliant wire.

11. The implantable stent of claim 10, wherein the stent is made of stainless steel, elgiloy, tungsten, platinum or NITINOL.