Body position and pressure control apparatus

1. A body position and pressure control apparatus, comprising:

a mattress comprising a plurality of divided portions and supporting a sleeper, and the mattress comprising a cover member covering the divided portions;

an elastomer sensor comprising a sheet sensor main body and a calculator,

the sensor main body being disposed one of above, below, and inside the mattress in a thickness direction thereof;

the sensor main body comprising: an elastomer sensor thin film, a plurality of electrodes connected to the sensor thin film, and a plurality of detectors provided between the electrodes and corresponding to the divided portions, wherein the sensor main body is capable of outputting input load as electricity, and wherein the calculator calculates body pressure distribution of the sleeper from the output electricity;

a body pressure adjuster controlling each of the divided portions based on body pressure distribution data detected by the elastomer sensor and thereby changing the body pressure distribution of the sleeper;

a breathable cushion mat disposed closer to the sleeper than the divided portions; and

a sensor bag attachably/detachably fixed inside the cover member, wherein the sensor main body and the cushion mat are stored in the sensor bag, wherein the sensor main body and the cushion mat are stacked in sequence on the sleeper side of the divided portions inside the cover member, and wherein the sensor main body and the cushion mat are fixed to the cover member.

2. The body position and pressure control apparatus according to claim 1 , wherein

the divided portions are composed of bag portions filled with one of gas and liquid, and

the body pressure adjuster supplies one of the gas and the liquid to the bag portions to inflate the bag portions and alternatively exhausts one of the gas and the liquid from the bag portions to deflate the bag portions, and thereby changes the body pressure distribution of the sleeper.

3. The body position and pressure control apparatus according to claim 1 , further comprising:

a sensor holder comprising the sensor main body and the cushion mat defined by a pair of cushion mats fixed on two sides in a thickness direction of the sensor main body, wherein

the sensor holder is disposed on the sleeper side of the divided portions inside the cover member, and

the sensor holder is fixed to the cover member.

4. The body position and pressure control apparatus according to claim 3 , further comprising:

the sensor holder being stored in the sensor bag.

5. The body position and pressure control apparatus according to claim 1 , wherein the sensor main body is provided with a plurality of ventilation holes penetrating in a thickness direction of the sensor thin film.

6. The body position and pressure control apparatus according to claim 1 , wherein the divided portions are densely disposed in an area corresponding to a portion of the sleeper likely to cause bedsores.

7. The body position and pressure control apparatus according to claim 1 , wherein the sensor main body has an elongation at break of 50% or greater.

8. The body position and pressure control apparatus according to claim 1 , wherein, in the sensor main body, the electrodes comprises band-shaped front electrodes disposed on a front side of the sensor thin film and band-shaped rear electrodes disposed on a rear side of the sensor thin film, the front electrodes and the rear electrodes intersect viewed from a front-rear direction to form detectors, and electrostatic capacitance at the detectors is changed by input of the load.

9. The body position and pressure control apparatus according to claim 8 , wherein the front electrodes and the rear electrodes comprise an elastomer and a conductive filler filled in the elastomer.