救急車用アクティブ制御ベッドの開発

概要

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A new ambulance stretcher that decreases blood pressure variation (BPV) of a patient is discussed. BPV is caused by foot-to-head acceleration in the patient's body during an emergency brake, and may cause serious damages to a patient suffering from circulatory disease. We propose a method to suppress foot-to-head acceleration in patient using the gravitational acceleration of the ambulance. The tilt angie of the stretcher is continuously controlled according to the back to front acceleration of the ambulance when an emergency brake is applied. The back-to-front acceleration is measured by an acceleration transducer located on the floor of the ambulance. A computer derives the desired angle of the stretcher from the back-to-front acceleration. Emergency brake tests were performed using a fixed stretcher and the stretcher proposed here. The results show that the foot-to-head acceleration is canceled by tilting the stretcher, and BPV obtained using the proposed stretcher is less than half that obtained using the fixed stretcher.
一般社団法人日本機械学会の論文
1997-05-25