Stent

• US 20180036155A1
• Filed: 10/13/2017
• Published: 02/08/2018
• Est. Priority Date: 12/13/2010
• Status: Active Grant

• Current Assignee: Microvention Incorporated (Terumo Corporation)
• Original Assignee: Microvention Incorporated (Terumo Corporation)
• Inventors: Tieu, Tai D., Cruise, Gregory M., Griffin, Heather, Nguyen, Helen, Nguyen, Minh, Pung, Ponaka, Vong, Shirley
• Granted Patent: US 10,463,515 B2
• Time in Patent Office: Days
• CPC Class Codes: A61F 2/852 Two or more distinct overlapping stents
• CPC Class Codes: A61F 2/86 Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
• 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 2/91 made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
• CPC Class Codes: A61F 2/945 hardenable, e.g. stents formed in situ
• CPC Class Codes: A61F 2/966 with relative longitudinal movement between outer sleeve and prosthesis, e.g. using a push rod
• CPC Class Codes: A61F 2002/823 Stents, different from stent-grafts, adapted to cover an aneurysm
• CPC Class Codes: A61F 2002/826 more than one stent being applied sequentially
• CPC Class Codes: A61F 2002/828 Means for connecting a plurality of stents allowing flexibility of the whole structure
• CPC Class Codes: A61F 2210/0076 multilayered, e.g. laminated structures
• CPC Class Codes: A61F 2230/0021 square
• CPC Class Codes: A61F 2230/005 Rosette-shaped, e.g. star-shaped
• CPC Class Codes: A61F 2230/0054 V-shaped
• CPC Class Codes: A61F 2230/0058 X-shaped
• CPC Class Codes: A61F 2230/0067 conical
• CPC Class Codes: A61F 2240/001 Designing or manufacturing processes
• CPC Class Codes: A61F 2250/0023 differing in porosity
• CPC Class Codes: A61F 2250/0036 differing in thickness
• CPC Class Codes: A61F 2250/0039 differing in diameter
• CPC Class Codes: A61F 2250/0098 : radio-opaque, e.g. radio-opaque markers
• CPC Class Codes: D04C 1/06 : Braid or lace serving particular purposes
• CPC Class Codes: D04C 3/48 : Auxiliary devices
• CPC Class Codes: D10B 2509/06 : Vascular grafts; stents

Abstract

In one embodiment according to the present invention, a stent is described having a generally cylindrical body formed from a single woven nitinol wire. The distal and proximal ends of the stent include a plurality of loops, some of which include marker members used for visualizing the position of the stent. In another embodiment, the previously described stent includes an inner flow diverting layer.

Claims

1. An implant device comprising:

a first woven cylindrical layer having a first porosity;

said first woven cylindrical layer being formed from a single first wire crossing back and forth between a first end and a second end of said first woven cylindrical layer at a plurality of locations to form said first generally cylindrical shape with a plurality of loops at said first end and said second end; and

,

a second woven cylindrical layer having a second porosity, forming a second generally tubular shape, and located within said first generally tubular shape;

said second woven layer being formed from one or more wires.

2. The implant device of claim 1, wherein said single first wire comprises a plurality of reduced diameter regions.

3. The implant device of claim 2, wherein said plurality of reduced diameter regions are positioned along said first wire at overlapping wire positions.

4. The implant device of claim 2, wherein said plurality of reduced diameter regions are positioned along said single first wire at overlapping wire positions when said implant device is in an expanded configuration, so as to decrease a thickness of said implant device.

5. The implant device of claim 2, wherein said plurality of reduced diameter regions are positioned along said first wire at overlapping wire positions when said implant device is in a compressed configuration, so as to decrease a thickness of said implant device.

6. The implant device of claim 2, wherein said reduced diameter regions are caused by electropolishing or etching.

7. The implant device of claim 2, wherein said reduced diameter regions are generated prior to weaving said single first wire into said first woven cylindrical layer.

8. The implant device of claim 1, wherein said single first wire has a tapered diameter along a single direction of said single first wire.

9. An implant device comprising:

a first woven cylindrical layer having a first porosity;

said first woven cylindrical layer comprising a first generally cylindrical shape with a plurality of loops at a first end and a second end, all formed entirely from a single first wire braided upon itself; and

,

a second woven cylindrical layer having a second porosity, forming a second generally tubular shape, and located within said first generally tubular shape;

said second woven layer being formed from one or more wires.

10. The implant device of claim 9, further comprising a plurality of attachment members connecting between said first woven cylindrical layer and said second woven cylindrical layer.

11. The implant device of claim 10, wherein said plurality of attachment members are positioned at a plurality of locations along a length of said implant device.

12. The implant device of claim 9, wherein said single first wire comprises a plurality of reduced diameter regions positioned along said single first wire at overlapping wire positions.

13. The implant device of claim 12, wherein said plurality of reduced diameter regions are positioned along said single first wire at said overlapping wire positions when said implant device is in an expanded configuration, so as to decrease a thickness of said implant device.

14. The implant device of claim 12, wherein said plurality of reduced diameter regions are positioned along said first wire at said overlapping wire positions when said implant device is in a compressed configuration, so as to decrease a thickness of said implant device.

15. The implant device of claim 12, wherein said reduced diameter regions are generated prior to weaving said single first wire into said first woven cylindrical layer.

16. The implant device of claim 9, further comprising a plurality of coils positioned around portions of said plurality of loops.

17. An implant device comprising:

a first woven cylindrical layer having a first porosity;

said first woven cylindrical layer comprising a first generally cylindrical shape with a plurality of loops at a first end and a second end, all formed entirely from a single first wire braided upon itself;

wherein said single first wire comprises a plurality of reduced diameter regions positioned along said single first wire at overlapping wire positions.

18. The implant device of claim 17, further comprising a second woven cylindrical layer having a second porosity, forming a second generally tubular shape, and located within said first generally tubular shape;

said second woven layer being formed from one or more wires.

19. The implant device of claim 17, wherein said plurality of reduced diameter regions are positioned along said single first wire at said overlapping wire positions when said implant device is in an expanded configuration, so as to decrease a thickness of said implant device.

20. The implant device of claim 17, wherein said plurality of reduced diameter regions are positioned along said first wire at said overlapping wire positions when said implant device is in a compressed configuration, so as to decrease a thickness of said implant device.