Abstract: An air bed having independent air chambers is disclosed for the patients suffering with bedsores. The air bed has multiple air chambers and a pneumatic device, and the multiple air chambers are arranged in matrix on the bed. The pneumatic device includes at least one air pipe. The air chambers of odd numbers and even numbers rows are connected to different air pipes. The rows of odd number and even number chambers can be filled with air in turn, which is favorable to turn the patient, and promote blood circulation. The air chambers corresponding to the bedsore can be bound into an hour glass configuration, so that the bedsore part will not contact the air chambers, while healthy other parts supported by the air chambers will not endure much pressure, which is favorable to the patient.

Abstract: An air mattress with alternate lifting function consists of a plurality of air pouches and side pouches. The side pouches are longitudinally located under the transverse air pouches. The side pouches are inflatable alternately to enable two sides of the air mattress moving up and down alternately to give a patient's body lain on the air mattress sideways exercises. The air pouches may be inflated alternately and synchronously with the inflation of the side pouches to alter pressing areas on the patient's body to prevent the patient from suffering harmful effect resulting from impeded blood circulation due to prolonged pressure exerting on the patient's body.

Abstract: An alternately inflated/deflated air bed being made by an arrangement of many air bag sets, each of them provided therein with a first air bag which is further provided therein with a second air bag. The first air bag thus is divided into two air chambers. An air pipe is provided on the first air bag for air intake and discharge. The second air bag is constantly kept inflated. The air bag sets are arranged in series. When the air bag sets of the odd and of the even numbers are alternately inflated/deflated by simultaneous discharge or intake of the two air chambers, the first air bags are inflated/deflated twice as much, so that a patient lying on the air bed obtains adequate ventilation by alternately changing contact points of his body with the air bed. When there is a power loss or machine failure which causes the first air bags to discharge, the second air bags support the patient to still feel comfortable.