PROBLEM TO BE SOLVED: To provide a fixing sheet that can be respectively fixed to two objects as a transmission source and a transmission destination of energy and has high propagation efficiency of energy between the two objects, an ultrasonic probe fixing sheet, an ultrasonic probe, and an ultrasonic device.SOLUTION: A fixing sheet 10 comprises: a propagation part 12 that comprises a probe side propagation surface 121 and a living body side propagation surface 122, is composed of a state variable material that varies from a gelatinous state to a sol state by a temperature variation, and outputs an ultrasonic wave, which is input from at least either one of the probe side propagation surface 121 and the living body side propagation surface 122, from the other and a fixing part 11 provided in the peripheral part of the propagation part 12, which comprises a probe fixing surface 111 that is continuous to the probe side propagation surface 121 and can be pasted and fixed to a probe body 2, and a living body fixing surface 112 that is continuous to the living body side propagation surface 122 and can be pasted and fixed to a living body 3.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2017,JPO&INPIT【課題】エネルギーの伝達元及び伝達先となる2つの対象物のそれぞれに対して固定可能で、かつ2つの対象物の間におけるエネルギーの伝搬効率が高い固定シート、超音波プローブ用固定シート、超音波プローブ、及び超音波装置を提供する。【解決手段】固定シート10は、プローブ側伝搬面121及び生体側伝搬面122を有し、温度変化によりゲル状からゾル状に変化する状態可変素材により構成され、プローブ側伝搬面121及び生体側伝搬面122の少なくともいずれか一方から入力された超音波を他方から出力させる伝搬部12と、プローブ側伝搬面121に連続し、プローブ本体2に対して貼着固定可能なプローブ固定面111、及び生体側伝搬面122に連続し、生体3に対して貼着固定可能な生体固定面112を有し、伝搬部12の周部に設けられた固定部11と、を備えた。【選択図】図2
