Stent

• US 9,554,924 B2
• Filed: 02/08/2013
• Issued: 01/31/2017
• Est. Priority Date: 05/11/2002
• Status: Expired due to Fees

• Current Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Inventors: Schlick, Tilman, Kuhnle, Markus
• Primary Examiner(s): BUI, VY Q
• Application Number:
  US13/763,169
• Publication Number:
  US 20130150950A1
• Time in Patent Office: 1,453 Days
• Field of Search: 623/1.13, 623/1.15, 623/1.21, 623/1.23, 606/108, 606/191, 606/194, 606/195, 606/198
• 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 2/82 Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents stent-grafts for tubular structures of the body other than blood vessels A61F2/04; stent-grafts for blood vessels A61F2/07; instruments specially adapted for placement or removal of stents or stent-grafts A61F2/95; for closing wounds, or holding wounds closed A61B17/04 - A61B17/115; dilators A61M29/00
• 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 2/89 the wire-like elements comprising two or more adjacent rings flexibly connected by separate members
• CPC Class Codes: A61F 2/90 characterised by a net-like or mesh-like structure
• CPC Class Codes: A61F 2002/044 Oesophagi or esophagi or gullets
• CPC Class Codes: A61F 2002/075 the stent being loosely attached to the graft material, e.g. by stitching
• CPC Class Codes: A61F 2002/30233 Stepped cylinders, i.e. having discrete diameter changes
• CPC Class Codes: A61F 2002/30235 tubular, e.g. sleeves
• CPC Class Codes: A61F 2002/30327 differing in diameter
• CPC Class Codes: A61F 2002/828 Means for connecting a plurality of stents allowing flexibility of the whole structure
• CPC Class Codes: A61F 2230/0069 cylindrical
• CPC Class Codes: A61F 2230/0078 hyperboloidal
• CPC Class Codes: A61F 2250/0007 for adjusting length
• CPC Class Codes: A61F 2250/001 for adjusting a diameter
• CPC Class Codes: A61F 2250/0039 differing in diameter

Abstract

A stent (10) for transluminal implantation comprises a first, second and third stent section (11, 12, 13) for splinting and/or keeping open a hollow organ which are connected to each other via elastic tubular sections (14, 15). The stent (10) combines at least three different stent designs in one stent and can therefore be adjusted to the motion behavior of a hollow organ in an improved fashion (FIG. 1).

Claims

1. A stent having a wall with a first end, a second end, and a stent length extending between the first and second ends, the wall of the stent comprising:

a plurality of stent sections formed of a first material, the plurality of stent sections including a first stent section, a second stent section at the first end of the stent, and a third stent section at the second end of the stent, wherein the first stent section is positioned between the second stent section and the third stent section,

the second stent section having a first end and an opposite second end, wherein the first end of the second stent section is closer to the first end of the stent than the second end of the second stent section;

a plastic material;

at least one filament;

wherein the first, second and third stent sections are connected to one another only by the at least one filament and by the plastic material,

wherein adjacent stent sections are separated by a gap extending circumferentially around the stent,

wherein each gap is devoid of the first material,

wherein the at least one filament extends through the plurality of stent sections with the plastic material and the at least one filament spanning each gap, and

wherein the at least one filament extends along the second stent section past the second end of the second stent section toward the first end of the second stent section.

2. The stent of claim 1, each stent section having a length less than the stent length, the plastic material extending from the first end to the second end, and the at least one filament extending from the first end to the second end.

3. The stent of claim 1, the web being formed of metal, plastic, or carbon.

4. The stent of claim 1, the at least one filament being a plurality of filaments.

5. The stent of claim 1, wherein the at least one filament extends at least from the first end to the second end of the stent.

6. The stent of claim 1, an inner surface of the wall being smooth.

7. The stent of claim 1, the plastic material comprising at least one layer.

8. The stent of claim 1, the plastic material being elastic.

9. The stent of claim 1, the wall further comprising a loop for reducing a diameter of the stent.

10. The stent of claim 1, each stent section being a braided or woven web.

11. The stent of claim 1, wherein the plurality of stent sections each further comprise two helical windings of the first material displaced from each other and located within the plastic material.

12. The stent of claim 1, wherein both of the second and third stent sections have a greater diameter than a diameter of the first stent section.

13. A stent comprising:

a plastic material;

at least one filament;

a plurality of spaced apart stent sections formed of a first material, the plurality of stent sections including a first stent section, a second stent section, and a third stent section, wherein the first stent section is positioned between the second stent section and the third stent section;

a plurality of first segments extending circumferentially around the stent between two of the stent sections, each first segment formed of the plastic material and the at least one filament, wherein the plurality of first segments are devoid of the first material;

wherein adjacent stent sections are separated by at least one first segment, and

wherein the at least one filament extends along an entire length of the stent.

14. The stent of claim 13, wherein there are fewer first segments than stent sections.

15. The stent of claim 13, wherein each stent section is a mesh of metal, plastic, or carbon.

16. The stent of claim 13, the stent having a smooth inner surface.

17. A stent comprising:

a plastic material extending for an entire length of the stent;

at least one filament extending along the entire length of the stent;

a plurality of spaced apart stent sections formed of a first material, the plurality of stent sections including a first stent section, a second stent section at a first end of the stent, and a third stent section at a second end of the stent, wherein the first stent section is positioned between the second stent section and the third stent section;

wherein adjacent stent sections are connected only by the plastic material and the at least one filament,

wherein both of the second and third stent sections have a greater diameter than a diameter of the first stent section,

wherein adjacent stent sections are separated by a gap extending circumferentially around the stent,

wherein each gap is devoid of the first material;

wherein the filament extends beyond the first end of the stent.

18. The stent of claim 17, wherein the plurality of stent sections are embedded in the plastic material.

19. The stent of claim 17, further comprising a loop for reducing a diameter of the stent.

20. The stent of claim 17, wherein the plurality of stent sections each further comprise two helical windings of the first material displaced from each other and located within the plastic material.