PROBLEM TO BE SOLVED: To provide a pacifier capable of promoting falling-asleep by making an infant feel calm, regardless of an awakening degree.SOLUTION: A pacifier which comprises a nipple part 11 held by an infant is such that: the nipple part 11 is provided with a sensor 14 for detecting an extension of deformation by an external force which the infant holding it applies； there is provided a control part 52 for determining an awakening degree of the infant on the basis of a detection result of the sensor 14； and the control part 52 controls a change means 19 for relatively changing the nipple part 11 so as to make the nipple part have a shape and/or hardness of stimulating the gum as the awakening degree is higher, and have a shape and/or hardness of not-stimulating the gum as the awakening degree is lower.SELECTED DRAWING: Figure 3COPYRIGHT: (C)2018,JPO&INPIT【課題】覚醒度合いに拘らず、乳幼児を落ち着かせて入眠を促すことが出来るおしゃぶりを提供すること。【解決手段】乳幼児に咥えられる乳首部１１を備えたおしゃぶりであって、乳首部１１には、これを咥えた乳幼児が及ぼす外力による変形の程度を検出するセンサ１４が設けられており、センサ１４の検出結果に基づいて、乳幼児の覚醒度を判断する制御部５２を有し、制御部５２は、相対的に、覚醒度が高いほど歯茎を刺激する形状及び／又は硬さとなり、覚醒度が低いほど歯茎を刺激しない形状及び／又は硬さとなるように、乳首部１１を変化させる変化手段１９を制御することを特徴とする。【選択図】図３
