PROBLEM TO BE SOLVED: To provide an apnea and/or infrequent respiration diagnostic device capable of diagnosing whether or not a users respiratory state is an apnea and/or infrequent respiration state with a high degree of precision based on a biological signal detected during sleep noninvasively and with no restraints without using a blood oxygen saturation measuring instrument, etc. together.SOLUTION: An apnea and/or infrequent respiration diagnostic device includes a respiratory signal detection part 4 for detecting respiratory signals of a user noninvasively and with no restraints, a normalization part 8 for normalizing the respiratory signal by changing a gain of the respiratory signal based on a value of difference between the maximum value and the minimum value in the respiratory signal for a predetermined time of the respiratory signals detected by the respiratory signal detection part 4, and a respiratory state determination part 9 for determining whether or not the user is in an apnea and/or infrequent respiration state based on the normalized respiratory signal normalized by the normalization part 8.COPYRIGHT: (C)2016,JPO&INPIT【課題】血中酸素飽和度計等を併用することなく、睡眠時に無侵襲且つ無拘束で検出した生体信号に基づいて利用者の呼吸状態が無呼吸及び/又は低呼吸であるか否かを高精度に診断することができる無呼吸及び/又は低呼吸診断装置を提供する。【解決手段】利用者の呼吸信号を無侵襲且つ無拘束で検出する呼吸信号検出部4と、呼吸信号検出部4によって検出された呼吸信号のうち、所定時間の呼吸信号における最大値と最小値との差分値に基づいて呼吸信号の利得を変化させることにより、呼吸信号の正規化を行う正規化部8と、正規化部8によって正規化された正規化呼吸信号に基づいて、利用者が無呼吸状態及び/又は低呼吸状態であるか否かを判定する呼吸状態判定部9とを備える。【選択図】図6
