Designing of microcontroller based Syringe Pump with variable and low delivery rates for the administration of small volumes

Delivering medications and fluids intravenously is a common practice in modern medical procedures. Administering medications or fluids directly into a patient´s blood circulation results in a predictable and immediate absorption of the drug or fluid administered, this may play a vital role in the treatment of certain acute conditions which require immediate action by drugs or fluids. Syringe Pumps are highly useful in delivering a precise quantity of the substance at specific periods of time as required. This research presents a proposal to create a cost effective working prototype of syringe pump for variable and low delivery rates for the administration of small volumes. The presented Syringe Pump utilizes a lead-screw mechanism that is driven by a stepper motor which itself is controlled by an electronic circuit based on an 89S52 microcontroller that works as the brain of the system and controls all other peripherals like LCD, Keypad and other components. Due to the possibility of the complete prototyping of the syringe pump locally from the electronic hardware designing to the code writing and to the mechanical assembly designing and fabrication it allows us in future to modify this design in accordance to the need of any related industry at home letting off the dependency on manufacturers from other parts of the world and may even allow us to export this cheaper product abroad.