Injection syringe for injecting two liquids

Details Injection syringe for injecting two liquids Injection syringe for injecting two liquids

1982-12-10

1984-08-14

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

A61M 100

Patent

active

044654766

ABSTRACT:
The injection syringe for injecting two liquids has a cylinder within which there are displaceably arranged in a liquid-tight fashion a piston as well as a separator piston member. The separator piston member divides the internal space of the cylinder into a first front compartment and a second rear compartment and is provided with a spacer rod arranged to be displaced in a liquid-tight fashion within a bore of the piston. Retaining or holder means ensure that the separator piston member maintains a constant spacing from the piston while the first liquid in the first front compartment is being ejected, whereas the separator piston member and the piston are displaceable relative to each other during ejection of the second liquid. The dual-liquid injection syringe is particularly utilized in computerized tomography for injecting a contrast medium and a flushing medium.

REFERENCES:
patent: 3685514 (1972-08-01), Cheney
patent: 3910273 (1975-10-01), Arlers
patent: 3957051 (1976-05-01), Topham
patent: 3985122 (1976-10-01), Topham

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