IP Library › Patent Application 12421777
Patent Application
App. No. 12/421,777

TUBULAR MEDICAL ENDOPROSTHESES

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Quick Facts
Patent No.
US None
App. No.
12/421,777
Abstract

A tubular prosthesis device for use within the body. The device includes, a metal filament material formed of metal outer member having an exposed outer surface and a core within the extended outer member formed of a different metal than the outer member. The core is secured within and substantially enclosed by the outer member. The device can be reduced to a small size for introduction into the body lumen and expandable to a sufficiently large size to engage the wall of the body lumen. Stents formed of composite wires are shown.

Claims (13)

1 - 30 . (canceled)

31 . An implantable medical stent, comprising:

a first layer;

a second layer; and

a third layer,

wherein a radiopacity of the first layer is different from a radiopacity of the second layer.

32 . The implantable medical stent of claim 31 , wherein the radiopacity of the first layer is less than the radiopacity of the second layer.

33 . The implantable medical stent of claim 32 , wherein the first layer is disposed inwardly of the second layer.

34 . The implantable medical stent of claim 33 , wherein the second layer is disposed inwardly of third layer.

35 . The implantable medical stent of claim 31 , wherein the first layer comprises stainless steel.

36 . The implantable medical stent of claim 31 , wherein the second layer comprises a metal selected from the group consisting of tungsten, tantalum, rhenium, iridium, silver, gold, bismuth, platinum and alloys thereof.

37 . The implantable medical stent of claim 31 , wherein the second layer comprises a material having a density of 9.9 grams per cubic centimeter or greater.

38 . The implantable medical stent of claim 31 , wherein the second layer comprises a material having a density of 16 grams per cubic centimeter or greater.