Plungerless syringe

Details Plungerless syringe Plungerless syringe

1993-07-26

1994-12-06

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604212, 604217, 604408, 222 94, A61M 500

Patent

active

053706269

ABSTRACT:
A hollow, molded, disposable, plastic syringe is provided with an air trap chamber in fluid communication with a collapsible container portion. An umbilical passage connects the container to the chamber. With the air trap chamber extending upwardly from the container portion, air is trapped in the chamber. The chamber is then removed by sealing the umbilical passage shut and severing the passage between the seal and the chamber. The syringe is then useable without any air contained in the container. The container is shaped to facilitate ejection of an accurate dose without injecting too little or too much of the contained liquid.

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