Injector

Details Injector Injector

1985-07-19

1987-02-10

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604220, A61M 500

Patent

active

046421025

ABSTRACT:
An injector such as a hypodermic syringe and the like is improved in that an amount of injection each time thereof is mechanically determined by a provision of a stopper means disconnectably attached to a plunger of the injector, which stopper means and the plunger are engaged with each other through a projection-recess engagement thereof, in which engagement the stopper means acts also as a wedge-like means inserted between the plunger and a barrel of the injector to make it possible that the stopper means abutting against a rear end of the barrel at a time when the injection operation is completed prevents the plunger from being advanced beyond it predetermined position, under the effect of its wedge action.

REFERENCES:
patent: 1569457 (1926-01-01), Carstens
patent: 2875761 (1959-03-01), Helmer et al.
patent: 4444335 (1984-04-01), Wood et al.
patent: 4466426 (1984-08-01), Blackman

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