Disposable hypodermic syringe with locking protective sheath
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United States of America Patent
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-
Feb 8, 2005
Issued Date -
N/A
app pub date -
Jun 19, 2002
filing date -
Oct 26, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
Safety device for a syringe is constituted by a body, a needle carrier, a piston, and a piston plunger. The device includes a sheath and a body. The syringe body may slide axially inside the sheath between an injection position and a safe position. A return member urges the syringe body towards the safe position, and may be triggered automatically when the piston plunger is pushed into the body. A telescopic head is capable of taking up a retracted position and an extended position. A combination for locking the telescopic head in the extended position may be constituted by a combination of two oppositely-directed axial bearing surfaces bearing against two oppositely-directed axial bearing surfaces of the sheath, and two oppositely-directed lateral bearing surfaces which bear against two oppositely-directed lateral bearing surfaces of the sheath.
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