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US 8,025,916 B2Granted
Methods for forming a composite stent with regioselective material
AssigneeAbbott Cardiovascular Systems Inc.
InventorsSyed F. A. Hossainy, Orlando Padilla, Daryush Mirzaee, Fuh-Wei Tang
Life of this patent
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Abstract
A composite stent and a method for making the same are provided.
Claims22
A method of forming a coating on a stent, comprising:
- applying a solution to a stent, the stent being made from a first material, wherein the solution comprises a second material having a creep compliance of about 0.5 GPa−1 to about 10.0 GPa−1;
- and
- solidifying the second material on the stent;
- wherein the solidified second material forms at least two bands in contact with a surface of the stent, each of the bands covering a discrete region of the stent spaced apart from the other band(s);
- wherein at least one of the bands at least partially covers or bridges a window of the stent;
- and
- wherein there are formed at least two bands of the at least two bands each of which is an unperforated hollow cylinder encircling the stent.
4 more elements
A method of forming a coating on a stent, comprising:
- applying a solution comprising a first material onto a stent, the stent being made from a second material, wherein a modulus of elasticity of the first material is lower than a modulus of elasticity of the second material;
- and
- solidifying the first material on the stent;
- wherein the solidified first material forms at least two bands in contact with a surface of the stent, each of the bands covering a discrete region of the stent separated from the other band(s);
- wherein at least one of the bands at least partially covers or bridges a window of the stent;
- and
- wherein there are formed at least two bands of the at least two bands each of which is an unperforated hollow cylinder encircling the stent.
4 more elements
A method of forming a coating on a stent comprising:
- dripping a viscous solution comprising a first material onto a stent, the stent being made from a second material, wherein a modulus of elasticity of the first material is lower than a modulus of elasticity of the second material;
- and
- solidifying the first material on the stent to form at least two bands in contact with a surface of the stent, each of the bands covering a discrete region of the stent separated from the other band(s);
- wherein dripping the solution comprises disposing the viscous solution, the solution having a liquid fiber consistency, on the surface of the stent to form at least two concentric annular bands having a substantially tubular diameter of approximately 0.5 to approximately 5.0 microns.
1 more element
Dependencies are inferred from the claim text.