Gasket for Pre-Filled Syringe and Pre-Filled Syringe
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United States of America Patent
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app pub date -
May 19, 2011
filing date -
Jun 29, 1998
priority date (Note) -
Abandoned
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Abstract
The present invention relates to a gasket (7) for a pre-filled syringe 1 into which liquid (3) is charged, wherein a peripheral side surface of the gasket (7 a) that is in contact with an inner surface of the syringe barrel (2) is provided with a restriction (8), the bottom surface (7c) of the gasket (7) that is not in contact with the liquid (3) is formed into a tapered shape (10) and the gasket (7) has a hardness comprised from 57 to 60 when measured by a JIS hardness meter.
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