Two compartment syringe

Details Two compartment syringe Two compartment syringe

1988-06-15

1991-02-19

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604 90, A61M 500, A61M 3700

Patent

active

049940430

ABSTRACT:
Disclosed is a two compartment syringe having at least two by-passes which selectively allow an easy flow from one compartment to the other compartment.
The liquid (injection fluid) is in the "needle" compartment and the solid medicament is in the "plunger" compartment. Associated with the plunger compartment is an aperture or other means for allowing the escape of fluids from that compartment during a lyophilization process.

REFERENCES:
patent: 2549417 (1951-04-01), Brown
patent: 2607344 (1952-08-01), Brown
patent: 3052240 (1959-01-01), Silver et al.
patent: 3108591 (1963-10-01), Kolbas
patent: 3477431 (1969-11-01), Walecka
patent: 3494359 (1970-02-01), Zackheim
patent: 3914419 (1975-10-01), Haeger et al.
patent: 4065360 (1977-12-01), Kreb, III
patent: 4226236 (1980-10-01), Genese
patent: 4599082 (1986-07-01), Grimard
patent: 4613326 (1986-09-01), Szwarc
patent: 4792329 (1988-12-01), Schreuder
patent: 4818517 (1989-04-01), Kwee et al.

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