Patent EP0302625B2 successfully refreshed from Google Patents.
EP0302625B2
Expired / Lapsed
EP
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Method for preparing lubricated surfaces
Assignee: Becton Dickinson and Co
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Filing: 1988-07-20
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Granted: 1997-01-22
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Expires: 2008-07-20
Abstract
Abstract A method for lubricating a low surface energy polymeric surface includes plasma treatment of the surface. A film of a polysiloxane lubricant is applied to the plasma-treated surface to give an even coating of the lubricant which is stable for a protracted period of time.
Inventors
- 👤 Can B. Hu
- 👤 Donald D. Solomon
- 👤 Victor A. Williamitis
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 12:37
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; C08J7/123; B; B29; B29C; B29C59/00; B29C59/14; C08J7/04; C08J7/0427; C08J2483/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
86 words
A method for preparing a lubricated surface of a medical or diagnostic device comprising treating a polymeric surface with a plasma generated from a gas at a pressure of 0.1 to 100 torr to give a plasma-treated polymeric surface and applying thereto a film of a polysiloxane lubricant, characterized in that the lubricant has not been plasma-treated, said film having a surface tension substantially the same as or less than the surface energy of said plasma-treated surface, said film thereby fully wetting said plasma treated surface.
Claim 2
Dependent Claim
29 words
The method in accordance with Claim 1 wherein said polymeric surface is selected from the group consisting of polyethylene, polypropylene, polyurethane, polystyrene, polyvinylchloride, polytetrafluorethylene and fluorinated ethylene propylene polymer.
Claim 3
Dependent Claim
25 words
The method in accordance with Claim 1 wherein said gas is selected from the group consisting of nitrogen, argon, neon, xenon, krypton and mixtures thereof.
Claim 4
Dependent Claim
55 words
The method in accordance with Claim 1 wherein said polysiloxane lubricant is a polydialkylsiloxane of the formula wherein R and R' may independently be an allyl group of 1 to 20 carbon atoms or are joined into a ring of 5 to 8 carbon atoms and n is an integer of from 1 to 2000.
Claim 5
Dependent Claim
12 words
The method in accordance with Claim 4 wherein said polydialkylsiloxane is polydimethylsiloxane.
Claim 6
Dependent Claim
19 words
The method in accordance with Claim 4 wherein said lubricant has a viscosity of about 10 to 100,000 centistokes.
Claim 7
Dependent Claim
29 words
The method of claim 1 wherein the polymeric surface is a perfluorinated polymer and the plasma is generated by passing a radiofrequency discharge of 50 Kilohertz through argon gas.
Claim 8
Independent Claim
14 words
The method of any preceding claim, wherein the plasma is generated by glow discharge.
Claim 9
Independent Claim
16 words
The method of any preceding claim, wherein the medical device is a needle, syringe or catheter.
References Cited (Backward Citations)
No citation records indexed.
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