PROBLEM TO BE SOLVED: To provide an ultrasonic endoscope and a hood for an ultrasonic endoscope capable of preventing a body cavity wall from coming into close contact with a tip body by suctioning, and securing an observation visual field by an observation window.SOLUTION: An ultrasonic endoscope includes: an ultrasonic transducer 50 a tip body 36 having a treatment instrument derivation part 56 and an observation window 44 and a hood 80 for an ultrasonic endoscope mounted on the tip body 36, which includes a hood body 81 and an eaves-like part 83. At least either the tip body 36 or the hood body 81 is provided with a communication part 87 that communicates a first space 68 on a tip side of the treatment instrument derivation part 56 and the observation window 44 and on a more proximal end side than the ultrasonic transducer 50, and a second space 70 on at least either the proximal end side or the outer peripheral side of the hood body 81.SELECTED DRAWING: Figure 4COPYRIGHT: (C)2019,JPO&INPIT【課題】吸引により先端部本体に体腔壁が密着することを防止し、観察窓による観察視野を確保することができる超音波内視鏡および超音波内視鏡用フードを提供することを目的とする。【解決手段】超音波トランスデューサ50と、処置具導出部56と観察窓44とを備える先端部本体36と、先端部本体36に装着し、フード本体81と庇状部83とを備える超音波内視鏡用フード80と、を備え、先端部本体36およびフード本体81の少なくともいずれか一方に、処置具導出部56および観察窓44の先端側で超音波トランスデューサ50より基端側の第1の空間68と、フード本体81の基端側および外周側の少なくともいずれか一方の第2の空間70と、を連通する連通部87を有する。【選択図】図4
