Syringe with two variable volume chambers for containing and adm

Details Syringe with two variable volume chambers for containing and adm Syringe with two variable volume chambers for containing and adm

1999-06-28

2000-11-21

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604 89, 604 90, A61M 3700

Patent

active

061496286

ABSTRACT:
A syringe, of the type having two variable volume chambers inside the main cylindrical body, said chambers being separated by a displacing valve assembly, and being capable of housing components which should be mixed prior to injection. The novelty resides in the special conformation of parts and elements constituting said valve assembly, which comprises two cooperating, displacing elastomer portions; one of said portions being comprised by a peripheral, hollow cylindrical body bearing on the cylindrical wall of the main body, the other portion being an inner, solid cylindrical body slidingly bearing on the inner face of the front portion.

REFERENCES:
patent: 4116240 (1978-09-01), Guiney
patent: 4464174 (1984-08-01), Ennis
patent: 5630800 (1997-05-01), Blank et al.

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