Hypodermic syringe needle guard

Details Hypodermic syringe needle guard Hypodermic syringe needle guard

1988-10-17

1990-03-27

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604198, 604263, A61M 532

Patent

active

049116932

ABSTRACT:
A first cylindrically shaped part surrounds and is fixed to the needle base which is mounted on the forward end of the syringe body. A second cylindrical part is mounted within the first part for axial movement between a forward position where the needle is surrounded for protection of the needle prior to mounting and between injections and a position in which the needle is exposed during an injection. A spring urges the second part towards the forward position. Locking elements are provided for permanently locking the second part in a third, axially spaced position to protect the needle after it has been discarded. Prior to and between injections, the second part may be non-permanently locked in the forward position by rotating it relative to the first part.

REFERENCES:
patent: 4664654 (1987-05-01), Strauss
patent: 4747831 (1988-05-01), Kulli
patent: 4813940 (1989-03-01), Parry

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