Tubular prosthesis for external agent delivery
First Claim
1. A tubular prosthesis comprising:
- a prosthetic tubular member having a wall with an inner surface and an outer surface, said wall being impervious to transmission therethrough of a pre-determined fluid;
an outer covering having portions sealed to said outer surface of said tubular member, said outer cover being pervious to transmission therethrough of said pre-determined fluid; and
a fluid conduit having an end communicating with space defined between said tubular member and said outer covering, said fluid conduit formed to convey said pre-determined fluid to said space, wherein said outer covering is increasingly pervious to transmission therethrough of said predetermined fluid at locations increasingly further from said end of said fluid conduit.
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Accused Products
Abstract
A tubular prosthesis, which may be an endovascular prothesis, is provided which includes a tubular member (stent or stent/graft combination) and an outer covering having portions sealed to the tubular member. The tubular member is impervious to a pre-determined fluid, particularly an occluding fluid, while the outer cover is pervious to the pre-determined fluid. In one aspect of the present invention, the implantation of the prosthesis allows for occluding fluid to weep from the prosthesis and into a sac of an aneurysm to cause occlusion thereof without introducing the occluding fluid into the blood stream. In this manner, a Type II failure of the prosthesis may be avoided. In other aspects of the invention, therapeutic agents may be delivered and/or a seal may be formed about the prosthesis to prevent a Type I failure.
88 Citations
31 Claims
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1. A tubular prosthesis comprising:
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a prosthetic tubular member having a wall with an inner surface and an outer surface, said wall being impervious to transmission therethrough of a pre-determined fluid; an outer covering having portions sealed to said outer surface of said tubular member, said outer cover being pervious to transmission therethrough of said pre-determined fluid; and a fluid conduit having an end communicating with space defined between said tubular member and said outer covering, said fluid conduit formed to convey said pre-determined fluid to said space, wherein said outer covering is increasingly pervious to transmission therethrough of said predetermined fluid at locations increasingly further from said end of said fluid conduit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification