Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1992-02-13
1995-04-04
Rosenbaum, C. Fred
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604110, 604197, 604228, 604240, 604241, A61M 500
Patent
active
054032881
ABSTRACT:
This invention relates to a safety dental syringe which before and after use protects the needle from exposure. More particularly, this invention pertains to a safety sleeve for a conventional dental syringe wherein after the syringe is used, an overlying sleeve surrounding the barrel of the syringe is extended so that the exposed used needle of the syringe is shielded by the sleeve. The invention pertains to a needle and sleeve assembly useful for use in association with a dental syringe comprising a hollow barrel, a piston, and an anaesthetic ampule cavity therein, comprising: a hollow elongated sleeve having openings at each end thereof; and a hollow housing base which supports at one end thereof an injection needle, and at the other end thereof, an ampule penetrating needle, the exterior of the housing base being adapted to slidably engage with the hollow interior of the sleeve.
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Rosenbaum C. Fred
Stright, Jr. Ron
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