Tubular medical prosthesis
AssigneeBoston Scientific Corporation
InventorKevin R. Heath
Life of this patent
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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.
Claims25
A tubular prosthesis device for use within the body comprised of a metal filament material formed of a metal outer member of extended length having an exposed outer surface, and
- a core within said extended outer member comprising a different metal than said outer member, said core being secured within and substantially enclosed by said outer member,
- said device being capable of reduction to a small size for introduction into said body lumen and expandable to a sufficiently large size to engage the wall of said body lumen.
An implantable tubular medical stent delivery system comprising
- a catheter designed to deliver a tubular stent to a desired delivery site, the stent being expandable from a first profile for facilitating insertion into a body lumen, to a second, radially expanded profile at the desired delivery site,
- a unitary metal member configured to form the stent, the unitary member being formed of three or more coaxial metal layers incorporating at least a first and second metal, the first metal having a higher density than the second metal so that the stent will have enhanced visibility.
An implantable medical stent comprising a metal member configured to substantially define a tube, the metal member having three or more coaxial metal layers including at least a first layer formed of a first metal and a second layer formed of a second metal, the first metal having a density greater than the second metal to enhance visibility of the stent and the first layer is disposed along an inside surface of the second layer.
A tubular endoprosthesis in the form of a composite metal member configured as a tube and composed of three or more coaxial metal layers including a first metal and a second metal, wherein the first metal has a density greater than the second metal.
Dependencies are inferred from the claim text.