Patent ID: 6698622
Filing Date: 2004-03-02
Classification: A61C,B05C

Abstract:
A syringe for dispensing two viscous materials as an admixture, comprising:an integrally molded housing having a first and a second barrel symmetrically opposed along a center line, the barrels are enclosed at a discharge end and at an inlet end, have a generally cylindrical neck extending from and symmetrically disposed at the discharge end along the center line, the neck including first and second outlet passages in fluid communication, respectively, with the first and second barrels, an exterior circumferential surface defining the shape of the barrels, and a gripping member disposed at the inlet end of the housing; a first mating assembly having opposed first and second locking ribs symmetrically disposed with respect to said neck and rigidly attached to the enclosed discharge end, the first and second locking ribs having at least a portion aligning with the exterior circumferential surface of the two barrels, and wherein the first mating assembly is configured to receive a mixing tip or a locking closure cap; wherein the mixing tip has an inlet, an outlet, a bore comprising a neck receiving section defined by a circumferential surface adapted to closely receive the neck, and a second mating assembly having opposed generally planar first and second locking tabs symmetrically disposed with respect to the bore, the two mating assemblies conjoining when the neck is inserted into the mixing tip bore in a relative orientation, and wherein the two mating assemblies interlock when the mixing tip rotates in a first direction and the locking tabs slide under the first and the second locking ribs until a stop is achieved, the two mating assemblies are detachable when the mixing tip is rotated in an opposite direction; and wherein the mixing tip further including a static mixing element having a plurality of intertwined sections disposed within the bore of the mixing tip for mixing the two viscous materials as the two viscous materials are dispensed from the first and the second barrels.