Design and analysis of MEMS based actuator using Shape Memory Alloy

In this paper, we design and analyze a mechanical bi-leaflet valve to replace the damaged valve using Nickel-Titanium (NiTi) a shape memory alloy created using COMSOL multiphysics software with 60-150 mmhg as input pressure to the valve is tested against the displacement and stress is noticed in the valve. There by lowering the chance of backflow of blood. The displacement and stress distribution parameters were analyzed. For the applied pressure 140mmhg which is equivalent to the normal pressure. From the obtained results, it is clear that the designed actuator is highly optimized structure to prevent the patient from heart attack.