The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 18, 2014
Filed:
Apr. 17, 2009
Applicants:
Andrea Schmid, Moelnlycke, SE;
Marie Svensson, Gothenburg, SE;
Inventors:
Andrea Schmid, Moelnlycke, SE;
Marie Svensson, Gothenburg, SE;
Assignee:
Astra Tech AB, Molndal, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61M 1/00 (2006.01); A61M 25/00 (2006.01); A61L 29/08 (2006.01);
U.S. Cl.
CPC ...
A61M 25/0009 (2013.01); A61M 2025/006 (2013.01); A61M 2025/0046 (2013.01); A61L 29/085 (2013.01);
Abstract
A medical device is disclosed, comprising a substrate and a hydrophilic surface coating arranged on said substrate. The substrate has, on its surface coated with said hydrophilic surface coating, a surface texture with an arithmetical mean deviation of the surface profile (Ra) of at least 3 μm and/or a profile section height difference (Rdc (1-99%)) of at least 18 μm. It has surprisingly been found that the increased surface roughness of the substrate provides significant improvements in e.g. water retention for the hydrophilic coating.