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EP0928606A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

An intravascular stent having curved bridges for connecting adjacent hoops

Assignee: Nitinol Development Corp
•
Filing: 1999-01-08
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Granted: —
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Expires: 2019-01-08
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Abstract

Abstract In accordance with the present invention, there is provided a stent for insertion into a vessel of a patient. The stent is a tubular member having front and back open ends and a longitudinal axis extending therebetween. The tubular member has a first smaller diameter for insertion into a patient and navigation through the vessels, and a second larger diameter for deployment into the target area of a vessel. The tubular member is made from a plurality of adjacent hoops extending between the front and back ends. The hoops include a plurality of longitudinal struts and a plurality of loops connecting adjacent struts. The stent further includes a plurality of bridges having loop to bridge connections which connect adjacent hoops to one another. The bridge to loop connection points are separated angularly with respect to the longitudinal axis. The bridges have one end attached to a loop, another end attached to a loop on an adjacent hoop. The bridges have a non-linear curved profile between their bridge to loop connection points.

Inventors

  • 👤 Mark Mathis
  • 👤 Thomas Duerig

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-23 01:01
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/82; A61F2/86; A61F2/90; A61F2/91; A61F2/915; A61F2002/91533; A61F2002/9155; A61F2002/91558; A61F2210/00; A61F2210/0076; A61F2230/00; A61F2230/0002; A61F2230/0028; A61F2230/005; A61F2230/0054

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 133 words
A stent for insertion into a vessel of a patient, said stent comprising: a) a tubular member have a thickness and having front and back open ends and a longitudinal axis extending therebetween, said member having a first smaller diameter for insertion into said vessel, and a second larger diameter for deployment into said vessel; b) said tubular member comprising a plurality of adjacent hoops extending between said front and back ends, said hoops comprising a plurality of longitudinal struts and a plurality of loops connecting adjacent struts; and c) a plurality of bridges connecting adjacent hoops to one another at bridge to loop connection points wherein said connection points are separated angularly with respect to said longitudinal axis, said bridges having a non-linear curved profile between said bridge to loop connection points.
Claim 2
Dependent Claim 43 words
The stent of claim 1 wherein said loops comprise curved substantially semi-circular sections having centers, said bridges being connected to said loops at loop to bridge connection points having centers, said centers of said points being offset from said centers of said loops.
Claim 3
Dependent Claim 17 words
The stent of claim 1 or claim 2 wherein said stent is made from a superelastic alloy.
Claim 4
Dependent Claim 15 words
The stent of claim 3, wherein said superelastic alloy is a superelastic Nickel Titanium alloy.
Claim 5
Dependent Claim 24 words
The stent of claim 3 or claim 4 wherein said alloy comprises from 50.5 percent to 60 percent Nickel and the remainder comprising Titanium.
Claim 6
Dependent Claim 18 words
The stent of claim 5 wherein the stent has an Af temperature between 24 to 37 degrees Celsius.
Claim 7
Dependent Claim 47 words
The stent of any one of claims 1 to 6 wherein said struts have lengths, measured parallel to said longitudinal axis, and wherein the ratio of the number of struts per hoop to the length of a strut as measured in inches is greater than about 200.
Claim 8
Dependent Claim 28 words
The stent of any one of claims 1 to 7 wherein said bridges, loops and struts have widths which are less than said thickness of said tubular member.

References Cited (Backward Citations)

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US4733665B1 Cited
US4733665C2 Cited
US4665905A Cited
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EP0491349A2 Cited
EP0540290A2 Cited
WO1997040783A2 Cited

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