Stent configurations

• US 7,404,823 B2
• Filed: 10/31/2005
• Issued: 07/29/2008
• Est. Priority Date: 10/31/2005
• Status: Active Grant

• Current Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Original Assignee: Boston Scientific Scimed, Inc. (Boston Scientific Corporation)
• Inventors: Meyer, Michael P., Gregorich, Daniel, Yoon, Soo-Young
• Primary Examiner(s): GHERBI, SUZETTE JAIME J
• Application Number:
  US11/262,692
• Publication Number:
  US 20070100434A1
• Time in Patent Office: 1,002 Days
• Field of Search: 623 111- 118, 606194-196
• US Class Current: 623/1.15
• 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 2/915 with bands having a meander structure, adjacent bands being connected to each other
• CPC Class Codes: A61F 2002/91508 the meander having a difference in amplitude along the band
• CPC Class Codes: A61F 2002/91516 the meander having a change in frequency along the band
• CPC Class Codes: A61F 2002/91525 within the whole structure different bands showing different meander characteristics, e.g. frequency or amplitude
• CPC Class Codes: A61F 2002/91533 characterised by the phase between adjacent bands
• CPC Class Codes: A61F 2002/91558 connected peak to peak

Abstract

A stent may comprise a plurality of serpentine bands, wherein adjacent serpentine bands are connected by at least one connector strut. A serpentine band may comprise alternating straight struts and s-shaped struts. Connector struts may comprise first connector struts and second connector struts, wherein the first connector struts are nonparallel to the second connector struts.

Claims

1. A stent comprising a plurality of interconnected serpentine bands,

each serpentine band having alternating straight struts and s-shaped struts forming peaks and valleys, each straight strut connected at one end to one s-shaped strut and at a second end to a second s-shaped strut, each s-shaped strut connected at one end to one straight strut and at a second end to a second straight strut, one end of the s-shaped struts connected to one end of the straight struts at a peak and another end of the s-shaped struts connected to one end of the straight strut at a valley,

adjacent serpentine bands connected by a plurality of linear connectors, each linear connector extending from a peak of one serpentine band to a valley of another serpentine band adjacent thereto,

wherein a straight strut comprises a width, and a valley connected to the straight strut comprises a width that is greater than the width of the straight strut.

2. The stent of claim 1, further comprising first serpentine bands having a first orientation and second serpentine bands having a second orientation that is different from the first orientation.

3. The stent of claim 2, wherein first serpentine bands and second serpentine bands alternate along the length of the stent.

4. The stent of claim 3, further comprising first linear connectors and second linear connectors, the second linear connectors being nonparallel to the first linear connectors.

5. The stent of claim 4, wherein all of the first linear connectors are parallel to one another.

6. The stent of claim 5, wherein all of the second linear connectors are parallel to one another.

7. The stent of claim 4, wherein the first linear connectors extend from a valley of a first serpentine band to a peak of a second serpentine band.

8. The stent of claim 7, wherein the first linear connectors extend from the valley in a direction of a side of the valley comprising the s-shaped strut.

9. The stent of claim 7, wherein the second linear connectors extend from a valley of a second serpentine band to a peak of a first serpentine band.

10. The stent of claim 9, wherein the second linear connectors extend from the valley in a direction of a side of the valley comprising the straight strut.

11. The stent of claim 1, wherein each valley of a serpentine band is aligned about a circumference of the stent.

12. The stent of claim 1, wherein the serpentine bands and the linear connectors define a plurality of cells, each cell including a plurality of unconnected peaks and valleys, the unconnected peaks disposed on one serpentine band, the unconnected valleys disposed on the adjacent serpentine band.

13. A stent comprising a plurality of interconnected serpentine bands,

each serpentine band having alternating straight struts and s-shaped struts forming peaks and valleys, each straight strut connected at one end to one s-shaped strut and at a second end to a second s-shaped strut, each s-shaped strut connected at one end to one straight strut and at a second end to a second straight strut, one end of the s-shaped struts connected to one end of the straight struts at a peak and another end of the s-shaped struts connected to one end of the straight strut at a valley,

the serpentine bands comprising first serpentine bands having a first orientation and second serpentine bands having a second orientation that is different from the first orientation, the first serpentine bands and second serpentine bands alternating along the length of the stent,

adjacent serpentine bands connected by a plurality of linear connectors including first linear connectors and second linear connectors, the second linear connectors being nonparallel to the first linear connectors, each linear connector extending from a peak of one serpentine band to a valley of another serpentine band adjacent thereto,

wherein a first angle between a first linear connector and a stent lengthwise axis comprises a substantial mirror image of a second angle between a second linear connector and a stent lengthwise axis, the substantial mirror image taken across a stent circumferential line.

14. A stent comprising a plurality of interconnected serpentine bands,

each serpentine band having alternating straight struts and s-shaped struts forming peaks and valleys, each straight strut connected at one end to one s-shaped strut and at a second end to a second s-shaped strut, each s-shaped strut connected at one end to one straight strut and at a second end to a second straight strut, one end of the s-shaped struts connected to one end of the straight struts at a peak and another end of the s-shaped struts connected to one end of the straight strut at a valley,

adjacent serpentine bands connected by a plurality of linear connectors, each linear connector extending from a peak of one serpentine band to a valley of another serpentine band adjacent thereto,

wherein a serpentine band comprises first peaks and second peaks, the first peaks being aligned about a first circumference of the stent, the second peaks being aligned about a second circumference of the stent that is offset from the first circumference.

15. The stent of claim 14, wherein the serpentine band having first peaks and second peaks further comprises first valleys and second valleys, the first valleys being aligned about a third circumference of the stent, the second valleys being aligned about a fourth circumference of the stent that is offset from the third circumference.

16. A stent comprising a plurality of interconnected serpentine bands,

each serpentine band having alternating straight struts and s-shaped struts forming peaks and valleys, each straight strut connected at one end to one s-shaped strut and at a second end to a second s-shaped strut, each s-shaped strut connected at one end to one straight strut and at a second end to a second straight strut, one end of the s-shaped struts connected to one end of the straight struts at a peak and another end of the s-shaped struts connected to one end of the straight strut at a valley,

adjacent serpentine bands connected by a plurality of connectors, each connector extending from a peak of one serpentine band to a valley of another serpentine band adjacent thereto,

the connectors including a first straight connector extending in a first direction and a second straight connector extending in a second direction which is non-parallel to the first direction,

wherein a straight strut comprises a width, and a valley connected to the straight strut comprises a width that is greater than the width of the straight strut.

17. The stent of claim 16, wherein the first straight connector extends from a peak in a direction of a side of the peak comprising an s-shaped strut.

18. The stent of claim 17, wherein the second straight connector extends from a peak in a direction of a side of the peak comprising a straight strut.

19. A stent comprising a plurality of interconnected serpentine bands,

each serpentine band having alternating straight struts and s-shaped struts forming peaks and valleys, each straight strut connected at one end to one s-shaped strut and at a second end to a second s-shaped strut, each s-shaped strut connected at one end to one straight strut and at a second end to a second straight strut, one end of the s-shaped struts connected to one end of the straight struts at a peak and another end of the s-shaped struts connected to one end of the straight strut at a valley,

adjacent serpentine bands connected by a plurality of linear connectors, the connectors extending from peaks of one band to valleys of a band adjacent thereto,

the serpentine bands and connectors defining a plurality of cells, each cell including a plurality of unconnected peaks and valleys, the unconnected peaks disposed on one serpentine band, the unconnected valleys disposed on the adjacent serpentine band,

wherein a straight strut comprises a width, and a valley connected to the straight strut comprises a width that is greater than the width of the straight strut.