Applicator having partial insertion cannula

A method of administering a medication to a teat of an animal's udder comprising the steps of providing an applicator comprising an elongated syringe having an integral blunt-tipped cannula extending longitudinally from an end thereof, said cannula having a longitudinally extending bore and comprising a first portion for partial insertion of the cannula and a second portion for complete insertion of the cannula, said cannula first portion extending longitudinally from the blunt tip of the cannula to the cannula second portion, an end of the cannula second portion adjacent an end of the cannula first portion having a larger outside diameter of the cannula first portion adjacent end and forming an annular shoulder between the cannula first portion and cannula second portion for limiting the partial insertion of the cannula;

• inserting the cannula into the teat of the animal;
• and
• administering a medication from the cannula into the teat of the animal.

An applicator for administering a medication comprising an elongated syringe having an injection chamber for receiving a plunger portion, the syringe also having a hub portion at one end and an opposite open end through which said plunger portion is received, the syringe further having a cannula second portion that extends from the hub portion to an annular shoulder, a cannula first portion having a diameter that is smaller than the cannula second portion at the annular shoulder, the cannula first portion extending from the annular shoulder and terminating in a blunt tip, and a bore extending longitudinally through the second and first portions of the cannula, the bore being coaxial and communicating with the chamber, the annular shoulder being substantially perpendicular to the bore.