Prefilled ampoule-syringe of unitary dose

Details Prefilled ampoule-syringe of unitary dose Prefilled ampoule-syringe of unitary dose

1985-01-15

1986-09-09

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604236, A61M 5315

Patent

active

046106693

ABSTRACT:
A prefilled ampoule-syringe of unitary dose comprises an ampoule being closed at one of its ends, the other end being open. The ampoule further comprises a narrowed zone. A hollow capsule is arranged at top of the opening of the ampoule. This capsule is connected to a movable stopper means comprising a stopper head and a hollow cylindrical member having a radial channel and a peripheral rim. This rim acts as a retention member during the storage and as a piston ring during the injection. In order to avoid the loss of its elasticity, the rim is located within a belt of enlarged diameter downstream from the narrowed zone during the storage.

REFERENCES:
patent: 2893390 (1959-07-01), Lockhart
patent: 3159159 (1964-12-01), Cohen
patent: 3161195 (1964-12-01), Taylor et al.
patent: 3330280 (1967-07-01), Ogle

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