System and method for safety syringe

A multiple chamber safe injection system, comprising:

• a syringe body defining a syringe body interior and a distal coupling member at a distal end thereof;
• proximal and distal stopper members disposed in the syringe body interior, forming a proximal chamber between the proximal and distal stopper members and a distal chamber between the distal stopper member and the distal end of the syringe body;
• a plunger member configured to be manually manipulated to insert the proximal stopper member relative to the syringe body;
• a mix tube disposed in the syringe body interior;
• and
• a vent plug disposed at least partially in the distal coupling member and defining a plurality of channels configured to allow a gas to exit the syringe body interior while forming a liquid tight seal.

An autoinjector system, comprising:

• a disposable injection system comprising
• an injection system body having proximal and distal ends, and an injection system body interior therebetween,
• a stopper member disposed in the injection system body interior,
• a plunger member coupled to the stopper member,
• a finger flange coupled to the injection system body at the proximal end thereof,
• a needle hub assembly coupled to the injection system body at the distal end thereof, and
• a rigid needle shield coupled to the needle hub assembly;
• and
• a reusable drive system, comprising
• a drive system body having a drive system body interior,
• a plunger actuator/pusher to move the plunger member distally relative to the injection system body when the injection system is mounted in the drive system, and
• a flange holder/carriage to move the injection system distally or proximally relative to the drive system body when the injection system is mounted in the drive system.