PROBLEM TO BE SOLVED: To provide an ultrasonic irradiation device which properly applies treatment to not only a lesion near a superficial layer of a living tissue but also a lesion developed deep in the living tissue, such as a tumor.SOLUTION: This ultrasonic irradiation device 1 performs treatment by irradiating ultrasonic waves onto the living tissue forming a body cavity, with at least a part of the device inserted into the body cavity, and is equipped with: a focused ultrasound element 23 which emits focused ultrasonic waves focusing on a predetermined distant position a holding unit 15 that is arranged around the periphery of the focal position at which the focused ultrasonic waves emitted from the focused ultrasound element 23 focus and that holds and positions a part of the living tissue to be irradiated by the focused ultrasound waves and an outer cylindrical member 12 which secures the space to be used as a propagation path for the focused ultrasonic waves reaching the focal position of the focused ultrasonic waves from the focused ultrasound element 23, while supporting the holding unit 15.COPYRIGHT: (C)2012,JPO&INPIT【課題】 本発明は、生体組織の表層付近にできた病変部に限らず、生体組織の深部で成長した病変部(腫瘍など)に対しても適切な処置を行うことができる超音波照射デバイスを提供する。【解決手段】 少なくとも一部が体腔内に挿入され、体腔を形成する生体組織に対して超音波を照射して治療を行う超音波照射デバイス1であって、所定の離れた位置に集束する集束超音波を発する集束超音波素子23と、集束超音波素子23から照射される集束超音波が集束する集束位置の周囲に配置され、集束超音波が照射される対象となる生体組織の一部を狭持して位置決めする把持部15と、集束超音波素子23から集束超音波の集束位置に到る集束超音波の伝播経路としての空間を確保するとともに、把持部15を支持する外筒部材12と、を具備する。【選択図】図1
