Articulated stent

• US 6,508,834 B1
• Filed: 01/14/2000
• Issued: 01/21/2003
• Est. Priority Date: 03/17/1994
• Status: Expired due to Term

• Current Assignee: Medinol Limited (Medinol USA Incorporated)
• Original Assignee: Medinol Limited (Medinol USA Incorporated)
• Inventors: Richter, Jacob, Pinchasik, Gregory
• Primary Examiner(s): Willse, David H.
• Assistant Examiner(s): GHERBI, SUZETTE JAIME J
• Application Number:
  US09/483,082
• Time in Patent Office: 1,103 Days
• Field of Search: 606/1, 606/108, 606/194, 606/195, 606/158, 606/198, 621/1.1, 621/1.11, 621/1.16, 621/12, 623/1.15, 623/1.16, 623/1.17, 623/1.18
• US Class Current: 623/1.16
• CPC Class Codes: A61F 2/856 Single tubular stent with a side portal passage
• 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 2/91 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 2002/828 Means for connecting a plurality of stents allowing flexibility of the whole structure
• CPC Class Codes: A61F 2002/91533 characterised by the phase between adjacent bands
• CPC Class Codes: A61F 2002/91558 connected peak to peak
• CPC Class Codes: A61F 2250/0029 differing in bending or flexure capacity

Abstract

An articulated stent for delivering through a bodily conduit, for example, a peripheral or coronary artery, which has one or more curved portions and for implantation therein. The articulated stent includes at least two substantially rigid segments and a flexible connector for connecting adjacent segments. The connector assumes a cylindrical configuration when relaxed and a differentially stretched and compressed curved configuration when flexed.

Claims

1. An articulated stent, comprising:

(a) at least two substantially rigid segments having, upon expansion, a plurality of connected cells each having apices, each of said rigid segments presenting a substantially cylindrical structure; and

(b) a flexible connector, comprising a plurality of flexible links, disposed between the substantially rigid segments, each of the links connecting apices of adjacent cells on adjacent rigid segments, each of the links, when viewed laterally, having at least a first portion and a second portion and an area of inflection disposed between the first portion and the second portion.

2. The articulated stent of claim 1, wherein the area of inflection remains inflected after the expansion of the stent.

3. The articulated stent of claim 1, wherein the first portion and second portion are of different lengths and wherein the length of the larger of the portions is not greater than twice the length of the shorter of the portions.

4. The articulated stent of claim 1, wherein the area of inflection enlarges during the expansion of the stent.

5. The articulated stent of claim 1, wherein the first portion and second portion are substantially straight.

6. The articulated stent of claim 5, wherein the first portion and second portion are of different lengths and wherein the length of the larger of the portions is not greater than twice the length of the shorter of the portions.

7. The articulated stent of claim 6, wherein said substantially rigid segments are substantially rigid particularly when compared to said flexible connectors disposed between the substantially rigid segments.

8. The articulated stent of claim 6, wherein the area of inflection remains inflected after the expansion of the stent.

9. The articulated stent of claim 6, wherein the area of inflection enlarges during the expansion of the stent.

10. The articulated stent of claim 5, wherein the area of inflection remains inflected after the expansion of the stent.

11. The articulated stent of claim 5, wherein said substantially rigid segments are substantially rigid particularly when compared to said flexible connectors disposed between the substantially rigid segments.

12. The articulated stent of claim 5, wherein the area of inflection enlarges during the expansion of the stent.

13. The articulated stent of claim 1, wherein the substantially cylindrical structure comprises a mesh.

14. The articulated stent of claim 1, wherein said substantially rigid segments are substantially rigid particularly when compared to said flexible connectors disposed between the substantially rigid segments.