Design and Simulation of a Valveless Polymeric Micropump for Drug Delivery Applications

S. Babu[1], and P. Manohar[2]
[1]Department of Electrical and Electronics Engineering, M S Ramaiah Institute of Technology, Bengaluru, Karnataka, India
[2]Department of Medical Electronics, M S Ramaiah Institute of Technology, Bengaluru, Karnataka, India

Valveless micropumps have the advantage of being composed of least number of movable parts and hence can be used for long-term drug delivery applications. Their working principle is based on reciprocal forcing of fluid by an actuator through diffuser/nozzle elements generating a rectified mean flow.

Micropumps based on different actuating mechanisms have already been designed and fabricated using Poly-dimethylsiloxane (PDMS), Polymethyl methacrylate (PMMA). These studies have focused only on the diffuser/nozzle parameters-like diffuser angle, topology, height and length for controlling flow rate and back-pressure.

In this paper we focus on the topology and dimensions of the pump chamber in addition to the diffuser/nozzle characteristics. All the simulations are done using COMSOL®

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