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US 6,638,301 B1Granted
Medical device with radiopacity
AssigneeSciMed Life Systems, Inc.
InventorsVerivada Chandrasekaran, Karl Morris Schmidt, Christopher Torres Molina
Life of this patent
Estimating the term…
Abstract
An endoprosthesis, such as a stent, having a layer that can enhance the biocompatibility of the endoprosthesis, and methods of making the endoprosthesis are disclosed.
Claims17
A stent, comprising:
- a member defining a lumen, the member having
- a first portion;
- and
- a second portion disposed outwardly of the first portion, the second portion being more radiopaque than the first portion and including
- a first layer comprising a radiopaque material, and
- a second layer comprising the radiopaque material and defining an outer surface of the member, the second layer having a lower oxidation potential than an oxidation potential of the first layer.
3 more elements
A stent, comprising:
- a member defining a lumen, the member having a first portion including
- a first layer comprising a radiopaque material, and
- a second layer comprising the radiopaque material and defining an outer surface of the member, the second layer having a lower oxidation potential than an oxidation potential of the first layer.
A stent, comprising:
- a member including a first portion having a concentration gradient of a radiopaque material, the first portion defining an outer surface of the member.
Dependencies are inferred from the claim text.