A single hand operable injection control device (ICD) automatically injects material into a subject tissue at a rate controllably proportional to the rate of movement of the syringe. Squeezing the figure holds rotates a transmission/timing belt that is connected to a position reference member/guide that pushes against the subject tissue, causing the ICD body (containing the syringe) to push away from the subject tissue. The timing belt turns a worm gear that drives a syringe plunger into the syringe held by the ICD. The coordinated motions result in precise delivery of a unit volume/region of injectate into the subject. That is, a uniform “tube” of injectate is automatically laid in the cannula track.
