Expansible endoprosthesis for a human or animal tubular organ, and fitting tool for use thereof
First Claim
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1. A self-expanding stent comprising:
- a generally tubular self-expanding mesh formed of a material having spring properties, said mesh having an axis, opposite ends and a body portion extending axially between said ends, said mesh defining therethrough a plurality of openings, and said material of said mesh having an exposed surface including portions facing radially outwardly and radially inwardly with respect to said axis and portions facing toward each of said openings, said mesh being deformably expansible from a contracted state to an expanded state;
a liquid-tight film formed of an extensible and biocompatible material;
at least said body portion of said mesh being entirely embedded within said film, such that said film fills and bridges said openings of said body portion of said mesh, and with said film covering and being attached to the entire said exposed surface of said body portion of said mesh; and
said material of said film having an extensibility sufficient to enable said film to follow and move with said mesh during deformation thereof from said contracted state to said expanded state.
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Abstract
An endoprosthesis includes an extensible tubular mesh embedded in a plastic or elastomer extensible film. A tool for positioning the endoprosthesis includes a tube-shaped guide provided at its distal end with a tulip-shaped housing. Cutting threads cause the housing to open longitudinally into several petal-like parts. Application is to endoluminal treatment of aneurisms and dilations.
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Citations
30 Claims
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1. A self-expanding stent comprising:
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a generally tubular self-expanding mesh formed of a material having spring properties, said mesh having an axis, opposite ends and a body portion extending axially between said ends, said mesh defining therethrough a plurality of openings, and said material of said mesh having an exposed surface including portions facing radially outwardly and radially inwardly with respect to said axis and portions facing toward each of said openings, said mesh being deformably expansible from a contracted state to an expanded state; a liquid-tight film formed of an extensible and biocompatible material; at least said body portion of said mesh being entirely embedded within said film, such that said film fills and bridges said openings of said body portion of said mesh, and with said film covering and being attached to the entire said exposed surface of said body portion of said mesh; and said material of said film having an extensibility sufficient to enable said film to follow and move with said mesh during deformation thereof from said contracted state to said expanded state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An expansible stent comprising:
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a generally tubular mesh having an axis, opposite ends and a body portion extending axially between said ends, said mesh defining therethrough a plurality of openings, and said mesh having an exposed surface including portions facing radially outwardly and radially inwardly with respect to said axis and portions facing toward each of said openings, said mesh being deformably expansible from a contracted state to an expanded state; a liquid-tight film formed of an extensible and biocompatible material; at least said body portion of said mesh being entirely embedded within said film, such that said film fills and bridges said openings of said body portion of said mesh, and with said film covering and being attached to the entire said exposed surface of said body portion of said mesh; and said material of said film having an extensibility sufficient to enable said film to follow and move with said mesh during deformation thereof from said contracted state to said expanded state. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification