Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1985-02-12
1986-04-08
Yasko, John D.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
A61M 5245
Patent
active
045810230
ABSTRACT:
A one-time-use, disposable hypodermic syringe assembly in pre-packaged, pre-injection arrangement is provided and comprises: a plastic syringe barrel with a hypodermic needle mounted in its forward injection delivery end, the injection point of such needle projecting outwardly and forwardly of the barrel and the butt end of such needle projecting rearwardly within the barrel; a medicament-filled ampule positioned within the syringe barrel and having a pierceable diaphragm closure at its forward end and a piston-type stopper at its rearward end; and a plunger removably mounted on the outside of the syringe barrel and providing means while so mounted for locking the ampule, at its diaphragm closure end, out of piercing contact with the rearwardly extending butt end of the hypodermic needle, the plunger having means for connecting with the piston-type stopper of the ampule for use in moving the ampule, after removal of the plunger from its ampule-locking position on the syringe barrel, forwardly to effect piercing of the diaphragm by the butt end of the needle and thereafter in moving the piston-type stopper within the ampule to express medicament out of the ampule and through the needle for injection purposes.
REFERENCES:
patent: 2871858 (1959-02-01), Dann et al.
patent: 3811441 (1974-05-01), Sarnoff
patent: 4011868 (1977-03-01), Friend
patent: 4221218 (1980-09-01), Pfleger
Junkins Philip D.
Yasko John D.
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