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Simple and Safety
The purpose is to avoid any possible infection when doing mouth-to-mouth Ventilation. It combines the Cardiopulmonary Resuscitation (CPR) and mouth-to-mouth Ventilation at the same time and collects the oxygen into the gas bottle of handle via pressure to supply the oxygen. Also the expendable mask can avoid second infected.
It is easy to cause fracture of rib when overpower in doing CPR and it is secondary injury. The best limit is between 4 to 5 centimeters when doing CPR pressing, it just likes the characteristic of elastic rubber. It appears the caution when it overpowers. Even the unfamiliar person could do it at once.
Changhua County (彰化縣), Taiwan
Chen Wei Fang,