Tubular prosthesis for external agent delivery
First Claim
1. A method of occluding a sac of an aneurysm, the method comprising the steps of:
- implanting endovascularly an endovascular prosthesis which by-passes the aneurysm, said endovascular prosthesis including a tubular member having a wall, said wall being impervious to transmission therethrough of an occluding fluid, and an outer covering having portions sealed to said tubular member, said outer covering being pervious to transmission therethrough of said occluding fluid; and
conveying a dose of occluding fluid into a pocket at least partially defined between said tubular member and said outer covering, said dose being an effective amount to at least partially occlude the sac of the aneurysm, whereby said occluding fluid transmits through said outer covering to at least partially occlude the sac of the aneurysm.
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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.
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Citations
28 Claims
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1. A method of occluding a sac of an aneurysm, the method comprising the steps of:
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implanting endovascularly an endovascular prosthesis which by-passes the aneurysm, said endovascular prosthesis including a tubular member having a wall, said wall being impervious to transmission therethrough of an occluding fluid, and an outer covering having portions sealed to said tubular member, said outer covering being pervious to transmission therethrough of said occluding fluid; and
conveying a dose of occluding fluid into a pocket at least partially defined between said tubular member and said outer covering, said dose being an effective amount to at least partially occlude the sac of the aneurysm, whereby said occluding fluid transmits through said outer covering to at least partially occlude the sac of the aneurysm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of forming an endovascular prosthesis, the method comprising the steps of:
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providing a tubular member which includes a wall, said wall being impervious to transmission therethrough of a pre-determined fluid; and
sealing portions of an outer covering to said tubular member, said outer covering being pervious to transmission therethrough of said pre-determined fluid. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of administering a therapeutic agent, the method comprising the steps of:
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implanting a tubular prosthesis, said prosthesis including a tubular member having a wall, said wall being impervious to transmission therethrough of a pre-determined therapeutic agent, and an outer covering having portions sealed to said tubular member, said outer covering being pervious to transmission therethrough of said pre-determined therapeutic agent; and
conveying a dose of said pre-determined therapeutic agent into a pocket at least partially defined between said tubular member and said outer covering. - View Dependent Claims (20, 21, 22, 23)
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24. A method of at least partially forming a seal between a tubular prosthesis and a bodily passageway, the method comprising the steps of:
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implanting a tubular prosthesis into a bodily passageway, said prosthesis including a tubular member having a wall, said wall being impervious to transmission therethrough of an occluding fluid, and an outer covering having portions sealed to said tubular member, said outer covering being pervious to transmission therethrough of said occluding fluid; and
conveying a dose of occluding fluid into a pocket at least partially defined between said tubular member and said outer covering, said dose being an effective amount to at least partially occlude an area about said tubular member so as to at least partially form a seal between said prosthesis and portions of the bodily passageway. - View Dependent Claims (25, 26, 27, 28)
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Specification