Sealing stopper for a syringe and a prefilled syringe
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United States of America Patent
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-
Jul 18, 2000
Grant Date -
N/A
app pub date -
May 20, 1998
filing date -
May 22, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
There can be provided a sealing stopper for a syringe, having very high sealing property and sliding property, and a prefilled syringe using this sealing stopper and capable of preserving a medicament for a long time and operating in easy and precise manner during injecting. This syringe is also excellent in sanitary and operating property during a step of formulation or preservation of a medicament. In this sealing stopper for a syringe, a surface of the rubber body is laminated with a tetrafluoroethylene resin film or ultra-high molecular weight polyethylene film having an average roughness Ra on the central line of the surface in a range of at most 0.05 .mu.m and a kinematic friction coefficient of at most 0.2.
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