Modulated power injector with input device

A system for injecting medium into a patient, the system comprising:

• an automated injector comprising:
• a medium reservoir;
• an ejector for ejecting a volume of a fluid medium from the medium reservoir;
• and
• an actuator coupled to the ejector;
• an injection sensor disposed proximate an outlet of the medium reservoir;
• an input device remote from and communicatively coupled to the actuator, wherein the input device comprises:
• a syringe housing;
• a plunger slidably received in the syringe housing;
• a circuit board coupled to a first component of the input device;
• a plunger position sensor;
• a battery coupled to the circuit board and configured to provide power to the plunger position sensor;
• and
• a transmitter coupled to the circuit board for sending an input device action signal to the automated injector, wherein the input device action signal is based at least in part on a signal sent from plunger position sensor;
• a processor;
• and
• memory storing instructions that, when executed by the processor, cause the automated injector to perform operations comprising:
• controlling the actuator so as to advance the ejector at a first rate based at least in part on the input device action signal;
• and
• controlling the actuator so as to advance the ejector at a second rate different than the first rate based at least in part on an injection pressure signal received from the injection sensor.

A method of controlling injection of a medium into a patient with an automated injector, the method comprising:

• receiving an input device action signal from an input device located remote from the automated injector;
• processing the input device action signal to obtain a first actuation signal;
• sending the first actuation signal, wherein the first actuation signal activates an actuator to eject the medium from the automated injector at a first rate;
• receiving a modification signal from at least one of the input device and a sensor;
• processing the modification signal to obtain a second actuation signal;
• and
• sending the second actuation signal based at least in part on the modification signal.