Syringe with spring biased needle cover

Details Syringe with spring biased needle cover Syringe with spring biased needle cover

1998-10-23

1999-09-07

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604198, A61M 500

Patent

active

059479361

ABSTRACT:
A syringe with a spring biased needle cover that is biased into a fully extended position by the biasing spring to automatically cover the needle of the syringe. The syringe includes a syringe plunger, a syringe body and a cover assembly including a needle tube with a biasing spring positioned therein and a locking tab extending outwardly at an angle therefrom and a slidable needle cover member slidably positioned over the end of the needle tube and lockable in the fully extended position by the locking tab; the locking tab being depressible against the needle tube to allow the cover member to slide over the needle to reveal the needle for use; the biasing spring biasing the cover member back into the fully extended position covering the end of the needle when a retracting force supplied by the user is removed; the needle tube including two guide slots formed through the sidewall thereof; the cover member including two retaining tabs, each of the retaining tabs being slidably entrapped within one of the guide slots.

REFERENCES:
patent: 2876770 (1959-03-01), White
patent: 3134380 (1964-05-01), Armao
patent: 4601708 (1986-07-01), Jordan
patent: 4787891 (1988-11-01), Levin et al.
patent: 4804371 (1989-02-01), Vaillancourt
patent: 4929237 (1990-05-01), Medway
patent: 5049136 (1991-09-01), Johnson
patent: 5360408 (1994-11-01), Vaillahcourt
patent: 5403286 (1995-04-01), Lockwood, Jr.
patent: 5527294 (1996-06-01), Weatherford et al.
patent: 5634906 (1997-06-01), Haber et al.

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