CANNULA ASSEMBLY FOR A SYRINGE

摘要

CANNULA ASSEMBLY FOR SYRINGE This cannula assembly for injecting medicinal fluid into an animal's teat has a first tapered cannula formed with a circumferential bead at its wider end. A flexible jacket encloses the cannula and has another bead detachably engaging the bead on the cannula. A tapered second cannula extends forwardly from the jacket. This cannula is substantially different in length than the first cannula. A closure means such as a flexible cap has an internal bead which detachably engages a corresponding bead at the wider end of the second cannula. This assembly provides the user with a choice of cannulas of two different sizes in treating a teat. In another form of the invention, a second flexible jacket has a bead which detachably engages a bead on the second cannula. A third cannula extends forwardly from the second jacket. A flexible cap detachably engages a bead on the third cannula, so that the user has a choice of cannulas of three different lengths in treating a teat.