Patent ID: 6565533
Filing Date: 2003-05-20
Classification: A61D

Abstract:
Apparatus for inoculating an animal, said apparatus comprising:a hypodermic syringe; a needle mounted on the syringe, said needle being movable on a drive path for injecting the animal; a drive connected to the hypodermic syringe and operable to move the needle between a retracted position and an extended position; a conduit for directing fluid to flow through said apparatus, said conduit having an opening positioned relative to said needle such that upon positioning the animal in the drive path of the needle, the animal at least partially blocks the opening of the conduit to at least partially restrict the flow of fluid through the conduit, said conduit extending in generally parallel relationship with the drive path of the needle at the opening of the conduit; and a trigger mechanism operatively connected to the drive for triggering the drive to move the needle from its retracted position to its extended position to inject the animal, the trigger mechanism being responsive to the restricted flow of fluid through the conduit to trigger the drive to move the needle to its extended position.