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Medical Components Having Coated Surfaces Exhibiting Low Friction and Methods of Reducing Sticktion

  • US 20080069970A1
  • Filed: 09/14/2007
  • Published: 03/20/2008
  • Est. Priority Date: 09/15/2006
  • Status: Abandoned Application
First Claim
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1. A medical article comprising:

  • (a) a chamber formed from a cyclic polyolefin and having an inner surface in sliding engagement with an exterior surface of a sealing member, wherein the inner surface of the chamber has a coating thereon prepared from a composition comprising a first organopolysiloxane having a viscosity ranging from about 5,000 centistokes to about 100,000 centistokes, the coating being adhered to the inner surface by crosslinking induced by irradiation with an isotope, electron beam, or ultraviolet radiation; and

    (b) a sealing member having an exterior surface in sliding engagement with the interior surface of the chamber, the exterior surface of the sealing member having a coating thereon prepared from a composition comprising a second organopolysiloxane having a viscosity ranging from about 10,000 centistokes to about 500,000 centistokes, the coating being adhered to the exterior surface by crosslinking induced by irradiation with an isotope, electron beam, or ultraviolet radiation.

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