[Design of a portable external cardiac compression device].

Cardiopulmonary resuscitation (CPR) guidelines emphasize that external chest compressions should be started as soon as possible when CPR is performed in patients with cardiac arrest. Moreover, those guidelines stress on fast and hard compressions to make the chest fully rebound and minimize non-pressing time. Current mechanical recovery device has several problems such as displacement of the pressing position, high price, difficult to move, and easy dislocation of piston.

[Design and application of a medical bed and its bedside angle measuring device].

Patient position management is an important work in clinical treatment. In clinic, it is necessary to adjust the corresponding patient's position according to the characteristics of the patient's condition. The appropriate patient's position plays an important role in treating the disease, alleviating the severity of symptoms and preventing the complications in the critical patients.

[Design and application of a pulmonary function exercise bottle].

Chronic obstructive pulmonary disease (COPD) is a severe respiratory disease characterized by airway obstruction with high mortality and rate of recurrence. Rehabilitation exercise can lessen the possibility of the progressive exacerbation of the patient's condition, exerting an active role in improving their lung function and the quality of the patients' life. Therefore, we have designed a lung function exercise bottle, which is capable of adjusting the pressure according to the patient's needs.