PROBLEM TO BE SOLVED: To provide an ultrasonic observation device that can surely prevent a liquid from entering the inside of a holding part for holding an ultrasonic wave transmitting/receiving part.SOLUTION: The ultrasonic observation device incudes: the ultrasonic wave transmitting/receiving part for transmitting/receiving an ultrasonic wave in an ultrasonic wave transmitting/receiving region which is a predetermined region in an ultrasonic wave transmitting/receiving surface the holding part for holding the ultrasonic wave transmitting/receiving part so as to expose the ultrasonic wave transmitting/receiving region an acoustic lens part which is adhered on the ultrasonic wave transmitting/receiving surface by a first adhesive so as to cover the ultrasonic wave transmitting/receiving region and a protection part which covers an outer peripheral part not covered with the acoustic lens part on the ultrasonic wave transmitting/receiving surface, is disposed to extend in the outer peripheral direction from the ultrasonic wave transmitting/receiving surface, is adhered on the acoustic lens part and the outer peripheral part by a second adhesive and is adhered integrally with the holding part or on the holding part by the second adhesive.COPYRIGHT: (C)2013,JPO&INPIT【課題】超音波送受部を保持する保持部内への液体の浸入をより確実に防止することが可能な超音波観察装置を提供する。【解決手段】本発明の超音波観察装置は、超音波送受面内の所定の領域である超音波送受領域において超音波を送受信する超音波送受部と、前記超音波送受部を前記超音波送受領域が露出するように保持する保持部と、前記超音波送受領域を覆うように、前記超音波送受面上に第1の接着剤により接着された音響レンズ部と、前記超音波送受面の前記音響レンズ部により覆われていない外周部を覆い、前記超音波送受面よりも外周方向に延出するように配設され、前記音響レンズ部及び前記外周部に第2の接着剤により接着され、かつ前記保持部と一体又は前記保持部に前記第2の接着剤により接着された保護部と、を具備する。【選択図】図2
