In the medical field, powered medical equipment is becoming more portable, which can be carried anywhere and anytime for rescue, and portable equipment is becoming more convenient to move. It is because of the application and development of technologies such as lithium batteries. The spread of portable home devices and mobile monitoring devices allows patients to stay where they like. Portable medical devices must be truly portable in the full sense of the word to provide the best service to patients. The demand for smaller, lighter medical devices has also increased dramatically.