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US 4,997,423 AGranted
Laminated sliding stopper for a syringe
AssigneeDaikyo Gomu Seiko Ltd.
InventorsTamotsu Okuda, Tomoyasu Muraki
Life of this patent
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Abstract
A laminated sliding stopper for a syringe, excellent in sliding or moving property and free from contamination of an injection liquid, is provided which consists of a rubber elastic body whose part to be contacted with the injection liquid and sliding part on the inner wall of the barrel are fully laminated with a film of tetrafluoroethylene.
Claims6
A sliding stopper for a syringe, consisting of a rubber elastic body whose part to be contacted with a liquid medicament and sliding part on an inner wall of a barrel are fully laminated with a film of tetrafluoroethylene.
Dependencies are inferred from the claim text.