Spring loaded automatic retractable needle syringe

Details Spring loaded automatic retractable needle syringe Spring loaded automatic retractable needle syringe

2007-10-30

2007-10-30

Sirmons, Kevin C. (Department: 3767)

Surgery

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

Treating material introduced into or removed from body...

C604S198000, C604S263000

Reexamination Certificate

active

10822268

ABSTRACT:
A spring loaded retractable needle syringe comprising a body, a central tube coaxially mounted within said body, a needle carrier and needle slidably mounted within said central tube, a spring mounted within said central tube to bias said needle carrier and needle into said central tube, means for sliding said needle carrier and needle within said central tube to compress said spring and expose said needle, means for retaining said needle carrier and needle in the exposed position against the biasing force of said spring, and means for releasing the needle carrier and needle such that said needle carrier and needle are retracted into said central tube.

REFERENCES:
patent: 4747831 (1988-05-01), Kulli
patent: 5112316 (1992-05-01), Venturini
patent: 5167641 (1992-12-01), Schmitz
patent: 5232457 (1993-08-01), Grim
patent: 5360409 (1994-11-01), Boyd et al.
patent: 5423758 (1995-06-01), Shaw
patent: 5885257 (1999-03-01), Badger
patent: 6589209 (2003-07-01), Dysarz
patent: 7090656 (2006-08-01), Botich et al.

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