Automatic injector

Details Automatic injector Automatic injector

1987-05-12

1989-04-11

Ostrager, Allen M.

Surgery

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

Treating material introduced into or removed from body...

604 90, 604191, 604134, A61M 3700

Patent

active

048202860

ABSTRACT:
The invention relates to an automatic injector for injecting one or more injection liquids, comprising an assembly of a discharge mechanism, a cartridge in a cartridge holder, and an outer sleeve which is telescopically slidable around the cartridge holder, which cartridge comprises a barrel, in the barrel a piston and a number of separating stoppers equal to one less than the number of injection liquids, a needle holder with injection needle and optionally a by-pass for injection liquid. The injector is suitable for accommodating a solid and a solvent therefor, and for that purpose comprises a passable stopper between solid and solvent and a solvent by-pass in the barrel wall or in the passable stopper, in which, by a single or repeated operation of telescoping external parts of the injector solvent can pass the passable stopper and can reach the solid, as a result of which the injector can be made ready for use.

REFERENCES:
patent: 4226236 (1980-10-01), Genese
patent: 4394863 (1983-07-01), Bartner
patent: 4496344 (1985-01-01), Kamstra
patent: 4573971 (1986-03-01), Kamstra
patent: 4613326 (1986-09-01), Szwarc

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