Lubricative coating composition, article and assembly containing same and method thereof
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United States of America Patent
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Nov 30, 1993
Issued Date -
N/A
app pub date -
Dec 20, 1991
filing date -
Jan 14, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A lubricating composition includes an emulsion of a noncuring polysiloxane, a surfactant and water. Preferred polysiloxanes include a polar group, most preferably an aminoalkyl or carboxylalkyl terminating group. Preferred surfactants are copolymers of polysiloxane and polyoxyethylene. A metal article such as a needle, blade, cannula or quidewire includes a coating of the polysiloxane and the surfactant which renders the article surface lubricious. The article may be in a sliding relationship with a plastic article in an assembly such as a catheter-quidewire or a catheter-cannula assembly. The plastic portion of the assembly may also include a lubricant. The invention includes a method of making the lubricated article.
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