Nozzle assembly having a frangible plunger

Details Nozzle assembly having a frangible plunger Nozzle assembly having a frangible plunger

1996-02-29

1997-07-01

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604218, 604228, A61M 500

Patent

active

056432119

ABSTRACT:
A nozzle assembly adapted for an injector, includes a frangible plunger. The plunger has a first driving member and a second driving member connected to the first driving member and spaced apart therefrom by a predetermined gap using a frangible bridge. When a predetermined force is applied to the second driving member, it breaks the frangible bridge and moves the second driving member across the gap. This causes the second driving member to ram into the first driving member driving fluid out of the nozzle. Thereafter, as the second driving member is separated from the first driving member, the first driving member remains stuck in the chamber preventing reuse of the nozzle assembly.

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