An injection delivery system for automatically injecting fluid into an injection site includes at least one support element and a carriage moveably mounted to the at least one support element so that the carriage can move linearly relative thereto. The carriage has a support structure for removably receiving and carrying a syringe assembly for movement with the carriage, and a carriage actuator is operable to cause such linear movement of the carriage. A plunger actuator is carried by the carriage so as to move with the carriage, and is adapted to be operably coupled to a syringe plunger for causing linear movement of the syringe plunger within a syringe barrel. The carriage actuator and plunger actuator include respective inputs for receiving movement instructions, and may be coupled to an electronic controller that provides such instructions.
