Filling device with sound indicator for filling injection syringe

Claim 1

A filling device for a syringe, including barrel and stem portions, comprising a case portion, and including: i. movable holding means for releasably securing the stem portion of the syringe, and adapted to load or unload the syringe by movement of the stem portion; ii. a linear gear, including gear teeth attached to the holding means, and adapted to move the holding means; iii. a rotatable gear mounted by the case portion, the rotatable gear defining manually actuable gear teeth, the rotatable gear including gear teeth for engaging and actuating the gear teeth of the linear gear; iv. a sounding element adapted to be biased against the manually actuable gear teeth of the rotatable gear; and, v. a locking arm mounted on the filling device and adapted to secure the syringe against movement when the syringe stem is moved to load or unload the syringe, the locking arm being adapted to release the syringe after loading; and, means for detachably mounting to the filling device a bottle containing liquid medicine for loading or unloading by the syringe; whereby: vi. movement of the linear gear in one direction causes the holding means to load the syringe with liquid medicine from the medicine bottle, and movement of the linear gear in an opposite direction causes the syringe to unload liquid medicine into the bottle; and, vii. manual movement of the rotatable gear produces a sound from the sounding element due to contact with an individual gear tooth of the manually actuable gear teeth which coincides with an increment of movement of the rotatable gear, each sound being equivalent to a predetermine amount of liquid medicine loaded by the syringe.