PROBLEM TO BE SOLVED: To provide an acoustic coupler by which good transmission of an ultrasonic wave can be achieved.SOLUTION: An ultrasonic wave coupler 13a includes a sheet-like first member 25 having water holding property and water absorbing property. A second member 18 is coupled with the first member 25 to fix the first member 25 to a subject so that the first member 25 is in contact with a portion to be inspected of the subject. An ultrasonic device 31 is sandwiched between the first member 25 and a third member 17. The first member 25 is in contact with the portion to be inspected of the subject. A water content such as sweat held by the first member 25 functions as an acoustic coupling material.COPYRIGHT: (C)2015,JPO&INPIT【課題】超音波の良好な伝達を実現することができる音響結合装置を提供する。【解決手段】超音波結合装置13aは保水性および吸水性を有するシート状の第1部材25を備える。第2部材18は、第1部材25に結合されて、被験者の被検部位に第1部材25を接触させるように被験者に第1部材25を固定する。第1部材25と第3部材17との間に超音波デバイス31が挟まれる。第1部材25は被験者の被検部位に接触する。第1部材25に保持される汗といった水分は音響結合材として機能する。【選択図】図4
