Modular injection system and method for diluting an injectable fluid

A modular injection system comprising:

• a handheld injector device including:
• (a) a first cartridge defining a first chamber configured to contain a first injectable fluid;
• (b) a second cartridge defining a second chamber configured to contain a second injectable fluid;
• (c) a mixing unit configured to mix the first injectable fluid and the second injectable fluid;
• and
• (d) a drive unit;
• a control device which is separate from the handheld injector device, the control device including:
• (a) a processor operatively coupled to the drive unit;
• (b) an input device operatively coupled to the processor;
• and
• (c) a memory device storing instructions which when executed by the processor, causes the processor, in cooperation with the input device, the first chamber, the second chamber and the drive unit, to:
• (i) select a dilution ratio of the first injectable liquid and the second injectable liquid;
• (ii) based on the selected dilution ratio, produce an injectable mixed fluid by diluting the first injectable liquid with the second injectable liquid;
• and
• (iii) extrude the injectable mixed fluid.

A method of operating a modular injection system including a memory device storing instructions, the method comprising:

• (a) causing at least one processor to execute the instructions to select a dilution ratio of a first injectable liquid and a second injectable liquid, the at least one processor being located in a control device;
• (b) causing the at least one processor to execute the instructions to, using the selected dilution ratio, produce an injectable mixed fluid by diluting the first injectable liquid with the second injectable liquid;
• and
• (c) causing the at least one processor to execute the instructions to extrude the injectable mixed fluid, the injectable mixed fluid being extruded by a handheld injection device which is separate from the control device.