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US 12,558,210 B2Granted
Method of making topographical features and patterns on a surface of a medical device
AssigneeVactronix Scientific, LLC
InventorsScott P. Carpenter, Michael Poor, Julio C. Palmaz
Life of this patent
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Abstract
Methods of forming topographical features on an article, for example on a medical devices that has a surface configured to promote the migration of cells onto the surface of the medical device. In particular, the resulting surface of the medical device has a noncontiguous pattern of topographical features formed therein or thereon.
Claims19
A method of creating a pattern of topographical features on a surface of a medical article, comprising the steps of:
- a. coating photoresist onto the surface of the medical article;
- b. patterning the topographical features onto the photoresist by mounting the photoresist coated article on an optically transmissive mount surface having a photomask disposed thereupon, the photomask defining the pattern of topographical features, the mount surface being disposed between a light source and the medical article;
- c. exposing the photoresist with the pattern of topographical features by applying light from the light source through the optically transmissive mount surface and onto the photoresist coated medical article;
- d. removing the medical article from the optically transmissive mount surface;
- e. developing the photoresist to reveal the exposed pattern of topographical features on the surface of the medical article;
- and
- f. forming the topographical features on the medical article from the exposed pattern of topographical features.
4 more elements
A method of creating topographical features on the inside surface of a tubular medical article, comprising the steps of:
- a. coating at least the inside surface of the tubular medical article with photoresist;
- b. mounting the photoresist coated tubular medical article on an optically transmissive mandrel having a photomask disposed thereon, the mandrel disposed between a light source and the tubular medical article;
- c. applying light from the light source through the photomask on the optically transmissive mandrel and onto the photoresist coated tubular medical article, wherein the photomask has a pattern corresponding to a positive or negative of the topographical features;
- d. removing the tubular medical article from the photomasked mandrel;
- and
- e. developing the photoresist to reveal a pattern imparted by the photomasked optically transmissive mandrel.
3 more elements
Dependencies are inferred from the claim text.