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US6162243A Expired / Lapsed US ⏱️ 0.0 years remaining

Axially flexible stent

Assignee: Cordis US Corp
•
Filing: 1999-01-18
•
Granted: 2000-12-19
•
Expires: 2019-01-18
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Abstract

Abstract A stent with axial flexibility, in a preferred embodiment, has a longitudinal axis and comprises a plurality of longitudinally disposed bands, wherein each band defines a generally continuous wave along a line segment parallel to the longitudinal axis. A plurality of links maintains the bands in a tubular structure. In a further embodiment of the invention, each longitudinally disposed band of the stent is connected, at a plurality of periodic locations, by a short circumferential link to an adjacent band.

Inventors

  • 👤 Larry B. Gray
  • 👤 Ann Eckert
  • 👤 Todd M. Chelak
  • 👤 Robert M Tumarkin

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-31 16:58
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/90; A61F2/91; A61F2/915; A61F2/88; A61F2/885; A61F2002/91525; A61F2002/91533; A61F2002/91541; A61F2002/9155; A61F2002/91558

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 76 words
A stent having first and second ends with an intermediate section therebetween, and a longitudinal axis both in an unexpanded and an expanded configuration, comprising: wherein said unexpanded configuration comprises circumferentially spaced, longitudinally disposed struts; wherein each strut defines a generally continuous wave along said longitudinal axis; and links for maintaining the struts along said circumference in a tubular structure, wherein the struts and links define an expandable structure having axial flexibility in said unexpanded configuration.
Claim 2
Dependent Claim 76 words
A stent having first and second ends with an intermediate section therebetween, and a longitudinal axis both in an unexpanded and an expanded configuration, comprising: wherein said unexpanded configuration comprises circumferentially spaced, longitudinally disposed struts; wherein each strut defines a generally continuous wave along said longitudinal axis; and links for maintaining the struts along said circumference in a tubular structure, wherein the struts and links define an expandable structure having axial flexibility in said unexpanded configuration.
Claim 3
Dependent Claim 119 words
A stent having first and second ends with an intermediate section therebetween, the stent further having a longitudinal axis, and both an unexpanded and expanded configuration comprising: (a) wherein said unexpanded configuration comprises a plurality of longitudinally disposed struts, wherein each strut defines a wave along the longitudinal axis; the spatial frequency of the wave associated with each of the struts being different in a first end region lying proximate to one of said ends in comparison to the spatial frequency of the wave in the intermediate section; and (b) a plurality of links for maintaining the struts in a tubular structure; such that the struts and links define an expandable structure having axial flexibility in said unexpanded configuration.
Claim 4
Dependent Claim 119 words
A stent having first and second ends with an intermediate section therebetween, the stent further having a longitudinal axis, and both an unexpanded and expanded configuration comprising: (a) wherein said unexpanded configuration comprises a plurality of longitudinally disposed struts, wherein each strut defines a wave along the longitudinal axis; the spatial frequency of the wave associated with each of the struts being different in a first end region lying proximate to one of said ends in comparison to the spatial frequency of the wave in the intermediate section; and (b) a plurality of links for maintaining the struts in a tubular structure; such that the struts and links define an expandable structure having axial flexibility in said unexpanded configuration.
Claim 5
Dependent Claim 102 words
A stent having first and second ends with an intermediate section therebetween, and a longitudinal axis, and both an unexpanded and expanded configuration comprising: wherein said unexpanded configuration comprises a plurality of longitudinally disposed wave-shaped struts; and a plurality of circumferential links for maintaining the struts in a tubular structure, wherein each strut is connected at a plurality of periodic locations by a link to an adjacent strut, each link being axially displaced from any circumferentially adjacent link; such that the struts and bands define an expandable structure having axial flexibility in said unexpanded configuration, and axial rigidity in said expanded configuration.
Claim 6
Dependent Claim 102 words
A stent having first and second ends with an intermediate section therebetween, and a longitudinal axis, and both an unexpanded and expanded configuration comprising: wherein said unexpanded configuration comprises a plurality of longitudinally disposed wave-shaped struts; and a plurality of circumferential links for maintaining the struts in a tubular structure, wherein each strut is connected at a plurality of periodic locations by a link to an adjacent strut, each link being axially displaced from any circumferentially adjacent link; such that the struts and bands define an expandable structure having axial flexibility in said unexpanded configuration, and axial rigidity in said expanded configuration.

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 2003-12-19 2004-06-19 2004-12-19 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2007-12-19 2008-06-19 2008-12-19 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2011-12-19 2012-06-19 2012-12-19 $7700.00 Window Closed / Lapsed

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