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
Estimating the term…
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.
Claims20
A method of creating structural features on a surface of a medical device article, comprising the steps of:
- a. coating at least the surface of the medical device article with photoresist;
- b. processing the photoresist so as to make it photosensitive;
- c. mounting the photoresist coated medical device article on a non-planar mandrel having a photomask disposed thereon, the photomask having a pattern corresponding to the structural features to be created on the surface of the medical device article, the non-planar mandrel comprising a photomasked optically transmissive apparatus disposed between a light source and the article;
- d. applying light from the light source through a light guide to the photomasked optically transmissive apparatus and onto the photoresist coated medical device article;
- e. removing the medical device article from the non-planar mandrel;
- f. developing the photoresist to reveal the exposed pattern of structural features on the medical device article;
- and
- g. machining the exposed pattern of structural features on the medical device article thereby creating the structural features on the surface of the medical device article.
A method of creating topographical features on the inside surface of a stent, comprising the steps of:
- a. coating at least the inside surface of the stent with photoresist;
- b. processing the photoresist so as to make it photosensitive;
- c. mounting the photoresist coated stent on an optically transmissive non-planar mandrel having a photomask disposed thereon, the mandrel disposed between a source of exposing radiation and the stent;
- d. applying light from a light source through the photomask on the optically transmissive non-planar mandrel onto the photoresist coated stent;
- e. removing the stent from the photomasked mandrel;
- and
- f. developing the photoresist to reveal a pattern imparted by the photomasked optically transmissive non-planar mandrel.
A method of creating topographical features on a surface of a medical device, comprising the steps of:
- a. coating at least a portion of the surface of the a medical device with photoresist;
- b. processing the photoresist coated medical device on a non-planar optically transmissive mandrel having a photomask disposed thereon, the photomask corresponding to a pattern of topographical features to be formed on the surface of the a medical device;
- c. applying light from a light source through the photomask onto the photoresist coated a medical device;
- d. removing the a medical device from the non-planar optically transmissive mandrel;
- e. developing the photoresist to reveal the pattern of topographical features imparted by the photomasked surface;
- and
- f. mounting the exposed pattern of topographical features on the a medical device.
Dependencies are inferred from the claim text.