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Noor's Journal

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August 2016

Syringe Infusion Pump

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In medical terminology, syringe infusion pump is an electromechanical device which can deliver drugs precisely  at a variable rate. During some critical clinical situations, patients require a specific rate of drug injection to their body in order to prevail pathological ailments or injuries. Hence, the device has added significant role in the clinical medicine. In this work, I  have indigenously developed an infusion pump which can imitate the same functionality and purpose of the currently available commercial devices. The above figure portrays the tailored model with and without the motor assembly. The major parts are developed using a 3D printer. The project is funded by the Department of Biomedical Physics & Technology of the University of Dhaka, Bangladesh.

Video Link: 3D printed infusion pump

Stepper Controlled High Precision Linear Actuator

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The project aims to develop a high precision linear actuator for some special applications like syringe infusion pump, auto focused microscope, micro fluidics etc. The tailored model is intended to test the torque capacity of a specific stepper motor along with the performance of the control circuit. The electronic circuit includes a microcontroller (ATmega328P) which is programmed  to generate the pulses for the motor driver unit of the control circuit. The stepper motor driver unit consists of ULN2003A IC to provide sufficient current in order to excite the individual inductive coil inside the stepper. In this stage, we adopted the half stepping algorithm for this unipolar stepper motor to provide maximum torque during the operation.

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