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Non-Foreshortening intraluminal prosthesis
| Details |
Inventors: Roubin, Gary S.; White, Geoffrey Hamilton; Iyer, Sriram S.; Redmond, Russell J.; Vidal, Claude A.;
Assignee: Cornerstone Devices, Inc. (San Clemente, CA)
Primary Examiner: Buiz; Michael Powell
Assistant Examiner: Reip; David O.
Attorney, Agent or Firm: Sun; Raymond
An intraluminal prosthesis is provided with a plurality of annular elements. Each annular element includes a plurality of struts and apices connected to form an annular configuration. Each annular element has a compressed state and an expanded state, and has a longitudinal dimension which is smaller in the expanded state than in the compressed state. A plurality of connecting members connect the apices of adjacent annular elements. The connecting members have a plurality of alternating segments that function to compensate for the smaller longitudinal dimension of each annular element in the expanded state. The stent may be provided with varying flexibility along its length and/or circumference, and may include segments that have different diameters. |
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DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following detailed description is of the best presently contemplated modes of carrying out the invention.
This description is not to be taken in a limiting sense, but is made merely for the purpose of illustrating general principles of embodiments of the invention.
The scope of the invention is best defined by the appended claims.
The intraluminal prosthesis according to the present invention is a stent, although the principles of the present invention are also applicable to other prosthesis such as liners and filters.
The stent is delivered to a desired location in the lumen of a body vessel in a compressed state, and is then deployed by expanding it to its expanded state.
The stent maintains substantially the same length in both its fully compressed and fully expanded states, and in all states between these two states.
The stent may be provided with varying flexibility or rigidity along different segments thereof to allow the stent to be deployed in body vessels having different anatomies and different disease states.
The stent may also be provided in a configuration in which the same stent has varying diameters along different portions of the stent to facilitate implantation in body vessels that have varying diameters.
The stent according to the present invention can be a self-expanding stent, or a stent that is radially expandable by inflating a balloon or expanded by an expansion member, or a stent that is expanded by the use of radio frequency which provides heat to cause the stent to change its size.
The stent may also be coated with coverings of PTFE, dacron, or other biocompatible materials to form a combined stent-graft prosthesis.
The vessels in which the stent of the present invention can be deployed include but are not limited to natural body vessels such as ducts, arteries, trachea, veins, ureters and the esophagus, and artificial vessels such as grafts.
1.
A Preferred Embodiment A stent 40 according to the present invention is illustrated in FIGS
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