Syringe assembly

Details Syringe assembly Syringe assembly

1989-02-17

1990-05-08

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604263, A61M 532

Patent

active

049234471

ABSTRACT:
A syringe assembly comprises an elongated tubular syringe barrel having a tubular needled mounted to one end and a plunger slidably disposed within the barrel. A hollow outer casing is mounted to and surrounds the syringe barrel with the barrel and the casing defining an interior space therebetween. A tubular sleeve is telescopically disposed within the space between the casing and barrel and is movable between an extended position surrounding and shielding the syringe needle and a retracted position in which the needle is exposed for use. A longitudinal slot is formed in the casing and a projection mounted to the sleeve is slidably disposed within the slot to function as a lever for moving the sleeve between its extended and retracted positions. Notches are formed on either end of the slot such that the projection can be moved laterally into a notch to lock the sleeve in either its extended or its retracted position.

REFERENCES:
patent: 4356822 (1982-11-01), Winstead-Hall
patent: 4573976 (1986-03-01), Sampson et al.
patent: 4631057 (1986-12-01), Mitchell
patent: 4702739 (1987-10-01), Milorad

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