Disposable hypodermic syringe with locking protective sheath

Details Disposable hypodermic syringe with locking protective sheath Disposable hypodermic syringe with locking protective sheath

2005-02-08

2005-02-08

Lucchesi, Nicholas D. (Department: 3763)

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

C604S198000

Reexamination Certificate

active

06852096

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.

REFERENCES:
patent: 5433712 (1995-07-01), Stiles et al.
patent: 5562626 (1996-10-01), Sanpietro
patent: 6186980 (2001-02-01), Brunel
patent: 6319233 (2001-11-01), Jansen et al.
patent: 0 680 767 (1995-11-01), None
patent: WO 0076565 (2000-12-01), None
patent: WO 9300949 (1993-01-01), None

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