EXPANDABLE STENT WITH SLIDING AND LOCKING RADIAL ELEMENTS

• US 20070142901A1
• Filed: 02/28/2007
• Published: 06/21/2007
• Est. Priority Date: 02/17/1998
• Status: Abandoned Application

• Current Assignee: REVA Medical Inc.
• Original Assignee: REVA Medical Inc.
• Inventors: Koenig, Donald, Zeltinger, Joan, Steinke, Thomas
• Application Number:
  US11/680,532
• Publication Number:
  US 20070142901A1
• Time in Patent Office: Days
• US Class Current: 623/1.160
• CPC Class Codes: A61F 2/94 Stents retaining their form, i.e. not being deformable, after placement in the predetermined place
• CPC Class Codes: A61F 2002/825 having longitudinal struts
• CPC Class Codes: A61F 2220/005 using adhesives
• CPC Class Codes: A61F 2220/0058 soldered or brazed or welded

Abstract

In preferred embodiments, this invention relates to an expandable stent, comprising a tubular member comprising at least two circumferentially-adjacent radial elements, wherein each radial element comprises an engagement slot, through which a portion of the circumferentially-adjacent radial element is slidably engaged, such that the tubular member is capable of expanding from a first collapsed diameter to a second expanded diameter, wherein the engagement slot is not a paired slot.

Claims

1. An expandable stent, comprising a tubular member having a circumference and a longitudinal axis, and comprising at least two annular modules, wherein each annular module comprises at least two circumferentially-adjacent radial elements, wherein each radial element comprises an engagement slot through which a portion of the circumferentially-adjacent radial element is slidably engaged, such that the tubular member is capable of expanding from a first collapsed diameter to a second expanded diameter, wherein no radial element overlaps with itself in the second expanded diameter, and wherein the engagement slot does not comprise paired slots.

2. The expandable stent of claim 1, wherein the at least two annular modules are linked together through interlocking frame elements or serpentine linkage elements.

3. The expandable stent of claim 1, wherein said tubular member does not comprise a longitudinal backbone.

4. An expandable stent, comprising a tubular member having a circumference and a longitudinal axis, and comprising at least two annular modules, wherein each annular module comprises at least two circumferentially-adjacent radial elements, wherein each radial element has a longitudinal length and comprises an engagement slot through which a portion of the circumferentially-adjacent radial element is slidably engaged, such that the tubular member is capable of expanding from a first collapsed diameter to a second expanded diameter, wherein no radial element overlaps with itself in the second expanded diameter, wherein the engagement slot has a length in the longitudinal axis which is less than the longitudinal length of the radial element and wherein the engagement slot does not comprise paired slots.