POSTURE DETERMINATION DEVICE, BEDSORE PREVENTION DEVICE BASED ON POSTURE DETERMINATION, POSTURE DETERMINATION METHOD AND BEDSORE PREVENTION METHOD BASED ON POSTURE DETERMINATION

摘要

PPROBLEM TO BE SOLVED: To provide a posture determination device, a bedsore prevention device and a bedsore prevention method highly precisely detecting tossing in bed and surely preventing bedsore. PSOLUTION: This posture determination device, when a body movement is detected and if a change rate ¾(A0B)/B¾ of an amplitude A of a respiratory signal immediately before to an amplitude B of the respiratory signal immediately thereafter is a threshold C or more, determines that the amplitudes of the respiratory signals before/after the body movement are changed, determines it caused by a change in the posture of a patient from a supine posture into a prone posture or its reverse and determines the the patient tosses about in bed. PCOPYRIGHT: (C)2005,JPO&NCIPI