US 12,226,301 B2
Method of making topographical features and patterns on a surface of a medical device
Scott P. Carpenter, Fremont, CA (US); Michael Poor, Fremont, CA (US); and Julio C. Palmaz, Napa, CA (US)
Assigned to Vactronix Scientific, LLC, San Antonio, TX (US)
Filed by Vactronix Scientific LLC, Fremont, CA (US)
Filed on Oct. 17, 2022, as Appl. No. 17/967,782.
Application 17/967,782 is a continuation of application No. 17/361,942, filed on Jun. 29, 2021, granted, now 11,471,259, issued on Oct. 18, 2022.
Application 17/361,942 is a continuation of application No. 13/801,173, filed on Mar. 13, 2013, granted, now 11,045,297, issued on Jun. 29, 2021.
Application 13/801,173 is a continuation in part of application No. 13/654,923, filed on Oct. 18, 2012, granted, now 9,050,394, issued on Jun. 9, 2015.
Application 17/967,782 is a continuation of application No. 13/103,576, filed on May 9, 2011, granted, now 8,632,583, issued on Jan. 21, 2014.
Prior Publication US 2023/0109960 A1, Apr. 13, 2023
Int. Cl. A61F 2/00 (2006.01); A61F 2/82 (2013.01); A61F 2/24 (2006.01); A61F 2/915 (2013.01)
CPC A61F 2/0077 (2013.01) [A61F 2002/0081 (2013.01); A61F 2/24 (2013.01); A61F 2/82 (2013.01); A61F 2/915 (2013.01); Y10T 29/49982 (2015.01)] 20 Claims
OG exemplary drawing
 
1. 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.