Patent ID: 8672237

Claim:
An apparatus for delivering a mixture of at least two fluid components in a manner that prevents premature cross-contamination of the fluid components, comprising: a luer hub sub-assembly, including a proximal hub having a first fluid channel and a second fluid channel; a distal hub having a proximal side with a first elongate groove and a second elongate groove therein, each of the first and second elongate grooves, together with a distal wall of the proximal hub, defining a respective first and second fluid channel of the distal hub, the first and second fluid channels of the distal hub being in fluid communication with the first fluid channel and second fluid channel, respectively, of the proximal hub, and further including a female cannula-mating port provided on a distal side of the distal hub, wherein the first and second fluid channels of the distal hub terminate at a respective fluid path hole opening to an interior of the cylindrical female cannula-mating port; a malleable cannula having a proximal end region received in the cylindrical female cannula-mating port, the malleable cannula including first and second fluid-carrying lumens, each of the first and second fluid-carrying lumens being in fluid communication with a respective one of the fluid path holes, a third lumen having a wire disposed therein, and a fourth lumen; and a spray tip sub-assembly including a tip insert received in a tip cap, the tip cap having an end wall with a delivery opening therethrough, wherein a distal end region of the malleable cannula includes a pair of notches extending from a distal end wall of the malleable cannula to a pair of stop walls axially spaced proximally of the distal end wall, each of the notches exposing a respective semi-cylindrical channel extending from a respective one of the first and second fluid-carrying lumens, and alignment ledges extending laterally from each of the semi-cylindrical channels to an outer perimeter of the malleable cannula.