Ion implantation of silicone rubber
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United States of America Patent
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Jun 29, 1993
Issued Date -
N/A
app pub date -
Jul 8, 1992
filing date -
Jul 10, 1991
priority date (Note) -
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Abstract
A process to improve the surface properties of products made, at least in part, from silicone rubber is disclosed. The products find uses in industrial and medical device applications, such as drug-pump seals and valves, membranes, mammary prostheses, artificial heart diaphragms, pacemaker lead insulation and the like. The process is designed to change the silicone rubber's surface to one that is characterized by low friction, being antithrombotic, inkable, more wear resistant and deformable, and also being hydro-compatible. The process includes subjecting the product's silicone rubber surface to ion bombardment with gaseous ions that diffuse out with doses and at energy levels at least about 3E14 ions/cm.sup.2 at 80 keV.
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