Non-foreshortening intraluminal prosthesis
First Claim
1. A stent having a longitudinal length, a compressed state and an expanded state, the stent comprising:
- a plurality of annular elements;
the stent having a first segment and a second segment;
wherein the first and second segments have different diameters when the stent is in the expanded state; and
wherein the length of the stent remains the same in both the compressed and expanded states.
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Accused Products
Abstract
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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Citations
25 Claims
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1. A stent having a longitudinal length, a compressed state and an expanded state, the stent comprising:
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a plurality of annular elements;
the stent having a first segment and a second segment;
wherein the first and second segments have different diameters when the stent is in the expanded state; and
wherein the length of the stent remains the same in both the compressed and expanded states. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A stent having a longitudinal length, a compressed state and an expanded state, the stent comprising:
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a plurality of annular elements;
the stent having a first segment and a second segment;
wherein the first and second segments have different diameters when the stent is in the expanded state;
wherein the length of the stent remains the same in both the compressed and expanded states; and
wherein the stent is expanded to its expanded state and then preset at this expanded state in a manner such that the diameters of the first and second segments are different.
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9. A stent having a compressed state and an expanded state, the stent a comprising:
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a plurality of annular elements that define a plurality of apertures;
the stent having a first segment and a second segment;
wherein the first and second segments have different diameters when the stent is in the expanded state; and
wherein all the apertures in the stent have a uniform size when in the compressed state. - View Dependent Claims (10, 11, 12)
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13. A stent having a compressed state and an expanded state, the stent comprising:
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a plurality of annular elements;
a plurality of curved longitudinal elements that have a greater amplitude and shorter wavelength when the stent is in the compressed state than when the stent is in the expanded state;
the stent having a first segment and a second segment; and
wherein the first and second segments have different diameters when the stent is in the expanded state. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A stent having a longitudinal length, a compressed state and an expanded state, the stent comprising:
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a plurality of annular elements, each annular element having a plurality of straight struts and a plurality of apices;
a plurality of longitudinal connecting members connected to the apices of adjacent annular elements;
the stent having a first segment and a second segment;
wherein the first and second segments have different diameters when the stent is in the expanded state;
wherein all the straight struts in the stent have the same length through the stent; and
wherein all the connecting members in the stent have the same length through the stent. - View Dependent Claims (20)
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21. A stent having a compressed state and an expanded state, the stent comprising:
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a plurality of annular elements;
connecting members connected to adjacent annular elements, the connecting members being preset with an elasticity which causes each connecting member to elongate longitudinally when the stent is in the expanded state to compensate for the smaller longitudinal dimension of the annular elements in the expanded state;
the stent having a first segment and a second segment; and
wherein the first and second segments have different diameters when the stent is in the expanded state. - View Dependent Claims (22)
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23. A stent having a longitudinal length, a compressed state and an expanded state, the stent comprising:
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a plurality of annular elements, with a plurality of apertures defined by adjacent annular elements;
the stent having a first segment and a second segment;
wherein the first and second segments have different diameters when the stent is in the expanded state; and
wherein each of the plurality of apertures has a geometric shape, with the geometric shape of all the apertures being the same when the stent is in the compressed state. - View Dependent Claims (24, 25)
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Specification