Coated stent assembly and coating materials
OwnerJeffrey Helfer, Xingwu Wang +2inventors
InventorsJeffrey Helfer, Xingwu Wang, Robert Gray, Howard Greenwald
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Abstract
A high magnetic susceptibility nanomagnetic material that may be attached to recognition molecules and other therapeutic biological materials so as to be targeted to specific biologic tissues, thereby enabling the presence of the targeted tissue to be detected under magnetic resonance imaging with much greater sensitivity. Also a stent coated with such nanomagnetic material to enable artifact free imaging of such stent under magnetic resonance imaging.
Claims73
A MRI contrast enhancing material comprised of nanomagnetic particles having a particle size less than 100 nanometers, a coercive magnetic force of from about 1 to about 200 Oersteds, a remnant magnetization of from about 10 to about 10,000 Gauss, and a saturation magnetization of from about 100 to about 24,000 Gauss.
A stent comprising:
- a base substrate having a surface, said surface having an exterior section contiguous with an interior section;
- a plurality of layered coatings disposed on at least a portion of said surface, at least one of said plurality of layered coatings being comprised of a nanomagnetic material, said nanomagnetic material comprised of nanomagnetic particles having a particle size less than 100 nanometers, a coercive magnetic force of from about 1 to about 200 Oersteds, a remnant magnetization of from about 10 to about 10,000 Gauss, and a saturation magnetization of from about 100 to about 24,000 Gauss.
Dependencies are inferred from the claim text.