PROBLEM TO BE SOLVED: To provide an air mat device capable of giving a high comfortable feeling according to a patients condition.SOLUTION: The air mat device 1 includes: an air mat 2 formed by juxtaposing a plurality of independent cells in the height direction of the patients sleeping posture pressure sensors 8 detecting the distribution of pressure applied to the respective cells an air supply and exhaust device 4 supplying air to each cell so as to have a predetermined reference internal pressure value and a control device 5 connected to the pressure sensors 8 and the air supply and exhaust device 4 and controlling the air supply and exhaust device 4 to adjust the internal pressure of each cell. The control device 5 includes a body motion propriety determining part 5b determining based on detection signals of the pressure sensors 8 whether the patient can turn over in bed. When the body motion propriety determining part 5b determines that the patient cannot turn over in bed, the internal pressure of each cell is controlled by the air supply and exhaust device 4 so that the internal pressure of each cell is lower than the reference internal pressure value.COPYRIGHT: (C)2012,JPO&INPIT【課題】患者の状態に合わせて高い快適感を得ることができるエアマット装置を提供する。【解決手段】エアマット装置1は、独立した複数のセルが患者の寝姿勢時の身長方向に並設されてなるエアマット2と、各セルに作用する圧力分布を検出する圧力センサ8と、各セルに空気をそれぞれ所定の基準内圧値となるように供給する空気給排装置4と、圧力センサ8及び空気給排装置4に接続され、各セルの内圧を調整するように空気給排装置4を制御する制御装置5とを備えている。制御装置5は、圧力センサ8の検出信号を基に患者が寝返りできるかできないかを判定する体動可否判定部5bを有し、体動可否判定部5bが、患者が寝返りできないと判定すると、各セル内の内圧が基準内圧値よりも低くなるように空気給排装置4で各セル内圧を制御する。【選択図】図2