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During this pandemic time, hospitals and patients are facing lack of shortage of medical infrastructure. Doctors are panic about patient health. So, we invented a small ventilator device. It is an easy-to-use, low-cost, highly flexible, and open-source ventilator. It can measure temperature, blood pressure, respiratory rate, etc. This kind of ventilator is beneficial in pandemic times. It can be controlled using microcontroller devices. Here we used Raspberry pi, and it is the central part of the project. Results can be maintained and monitored. Results show the data of the patient's condition, whether he is normal or abnormal. Results are shown in LCD. And the data is stored in the cloud using the webserver. When the patient's condition is uncommon, devices give an intimation. A doctor can check the condition of patients at anytime and anywhere. These devices are handy to doctors and patients at an emergency time and covid-19 times. Insufficient medical infrastructure causes painful deaths in the world. We invented our project to help the patient in emergency times at a low cost. For the sake of Patients' health, we developed this project at a low price. [ABSTRACT FROM AUTHOR]