Prefilled two-compartment syringe

Details Prefilled two-compartment syringe Prefilled two-compartment syringe

1977-08-15

1979-10-23

Yasko, John D.

Surgery

Respiratory method or device

Ozone or ion generation

1282721, A61M 500

Patent

active

041716981

ABSTRACT:
A prefilled, ready to use, disposable syringe wherein a fluid medicament and a diluent therefor are sealed in two separate telescoping syringe barrels. A medicinal powder is sealed in an outer barrel adjacent the nozzle section by means of a pierceable stopper and the diluent is sealed in an inner barrel between another pierceable stopper and a plunger stopper. A double-pointed cannula is positioned between the two pierceable stoppers by means of a telescoping guide arrangement. Movement of the plunger stopper inwardly in the inner barrel initially effects a piercing of both pierceable stoppers and intermixing of the medicinal powder with the diluent. Continued movement of the plunger stopper will expel the mixed medicament from the syringe.

REFERENCES:
patent: 1234582 (1917-07-01), Trueblood
patent: 1279069 (1918-09-01), Yoshida
patent: 2841145 (1958-07-01), Epps
patent: 2869543 (1959-01-01), Ratcliff et al.
patent: 3370754 (1968-02-01), Cook et al.
patent: 3477432 (1969-11-01), Shaw
patent: 3570486 (1971-03-01), Engelsher
patent: 3724460 (1973-04-01), Gomez et al.
patent: 3785379 (1974-01-01), Cohen

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