发明授权
US5061251A Syringe device 失效
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Syringe device
摘要:
So as to prevent accidental needle contacts when a syringe device is not being used, I have devised a syringe device in which I have made a movable shield member, integral with a syringe member of said device, to be movably interconnected with the syringe member for movement between a first position for shielding a needle member of said device and a second position for exposing the needle member, I have provided means for manually moving the shield member from the first to the second position, and I have disposed between the shield member and the syringe member, spring means for normally biasing the shield member in the shielding position when the syringe device is not being used.
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