Methods and apparatus for dispensing compositions

Details Methods and apparatus for dispensing compositions Methods and apparatus for dispensing compositions

1996-02-22

1997-12-16

Yasko, John D.

Surgery

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

Treating material introduced into or removed from body...

604 83, 604 87, A61M 500

Patent

active

056979037

ABSTRACT:
A syringe is provided for dispensing single and multi-component compositions while minimizing the entrainment of air. The syringe includes a barrel having a nozzle positioned at one end, a plunger slidably received in the other end, and a sidewall extending between the ends. The barrel has an interior surface defining a chamber for holding the composition. An access port extends through the sidewall to communicate with the chamber. The access port is positioned and configured so that the composition can initially be delivered though the access port and into the chamber near the nozzle. A sufficient amount of composition is positioned to fill the chamber up to the access port. When multi-component compositions are used, an elongated paddle is provided for insertion into the chamber through the second end of the barrel to facilitate mixing of the components within the chamber. As the paddle is removed, a scraper is provided for removing the composition from off the paddle. Once the composition is properly positioned, the plunger is advanced so as to push the air within the chamber out through the access port and to deliver the composition out through the nozzle.

REFERENCES:
patent: 4958622 (1990-09-01), Selenke

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