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US 9,539,394 B2Granted
Method of reducing friction between syringe components
AssigneeW. L. Gore & Associates, Inc.
InventorMichael P. Moritz
Life of this patent
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Abstract
A method of making a syringe assembly includes providing a first syringe component defining a first sliding surface that is substantially free of lubricant. The first sliding surface is contacted with water. The first sliding surface and the water in contact with the first sliding surface are heated at a temperature of at least 121° C. The first sliding surface is dried.
Claims18
A method of reducing friction in a glass syringe comprising:
- treating a glass syringe barrel, including:
- filling said glass syringe barrel with water for injection (WFI),
- applying saturated steam to said glass syringe barrel at a temperature of at least 121° C. to heat the glass syringe barrel and the WFI,
- removing the WFI from the barrel, and
- drying the inside of the glass syringe barrel at room temperature, wherein the dried glass surface provides reduced friction.
2 more elements
A method for reducing friction in a syringe barrel, said method comprising:
- providing a syringe barrel defining a first sliding surface that is substantially free of lubricant;
- and
- treating the first sliding surface by
- (a) contacting the first sliding surface with water for injection (WFI);
- (b) heating the first sliding surface and the WFI in contact with the first sliding surface at a temperature of at least 121° C.;
- (c) removing the WFI from the first sliding surface;
- and
- (d) drying the first sliding surface wherein following treating steps (a) to (d), the friction of the first sliding surface is reduced.
5 more elements
Dependencies are inferred from the claim text.