Limited expansion endoluminal prostheses and methods for their use
First Claim
1. A controlled expansion endoluminal prosthesis comprising:
- a radially expansible tubular frame having an inner surface and an outer surface; and
a plastically expansible liner disposed on at least one of the inner and the outer surface of the frame;
wherein at least one of the frame and the liner includes at least one reinforcing element which limits radial expansion of the prosthesis to a predetermined expanded size.
2 Assignments
0 Petitions
Accused Products
Abstract
The present invention provides controlled expansion endoluminal prostheses and methods for their deployment and expansion. The present stent-grafts generally comprise a radially expansible tubular frame and a plastically expansible liner on the frame. Either the frame or the liner includes a reinforcing element which limits expansion of the stent-graft at a predetermined expanded size. In some embodiments, the reinforcing element restrains the frame, for example, by limiting the circumferential diagonals of perforations on a perforate frame structure. Generally, however, the reinforcing element is included in the liner as circumferentially oriented yarn. A particularly advantageous liner includes composite circumferential yarns having inexpansible fibers wrapped around an expansible fiber, such as a partially oriented yarn, PTFE, or the like.
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Citations
24 Claims
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1. A controlled expansion endoluminal prosthesis comprising:
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a radially expansible tubular frame having an inner surface and an outer surface; and a plastically expansible liner disposed on at least one of the inner and the outer surface of the frame; wherein at least one of the frame and the liner includes at least one reinforcing element which limits radial expansion of the prosthesis to a predetermined expanded size. - View Dependent Claims (8, 9, 10, 12, 13, 14, 15)
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2. A controlled expansion endoluminal prosthesis comprising:
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a radially expansible tubular frame having an inner surface and an outer surface; and a plastically expansible liner disposed on at least one of the inner and the outer surface of the frame; wherein the frame includes a plurality of reinforcing elements which limit radial expansion of the prosthesis to a predetermined expanded size, the reinforcing elements restraining radial expansion of the frame so that the frame defines the predetermined size. - View Dependent Claims (3, 4, 5, 6, 7)
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11. A controlled expansion endoluminal prosthesis comprising:
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a radially expansible tubular frame having an inner surface and an outer surface; and a plastically expansible liner disposed on at least one of the inner surface and the outer surface of the frame; wherein the liner includes at least one reinforcing fill element which limits radial expansion of the prosthesis so that the liner defines a predetermined expanded prosthesis size; and wherein the fill element comprises a composite yarn including serpentine inexpansible fiber and a second expansible fiber, wherein the serpentine fiber comprises fully drawn fiber wrapped around the second fiber, and wherein the serpentine fiber straightens during expansion of the liner to the predetermined expanded size.
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16. An expansible liner stent-graft comprising:
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a radially expansible tubular frame; and a plastically expansible liner disposed over at least a portion of at least one of an inner surface of the frame and an outer surface of the frame, the liner comprising a circumferentially oriented yarn including fully drawn fiber which defines a maximum expanded perimeter of the liner. - View Dependent Claims (22, 23, 24)
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17. An expansible liner stent-graft comprising:
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a radially expansible tubular frame; and a plastically expansible liner disposed over at least a portion of at least one of an inner surface of the frame and an outer surface of the frame, the liner comprising a circumferentially oriented yarn including fully drawn fiber which defines a maximum expanded perimeter of the liner, wherein the fully drawn fiber is wound around a second fiber, wherein the second fiber is expansible, and wherein the maximum perimeter is defined by straightening the fully drawn fiber. - View Dependent Claims (18, 19, 20, 21)
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Specification