Abstract: The present invention provides a device for treating dementia, including: a plurality of ultrasound probes; an ultrasound transducer arranged in each of the ultrasound probes and configured to propagate unfocused ultrasound energy to a brain; and an ultrasound generator connected to each of the ultrasound probes.

Abstract: A shock wave generating device includes an optical fiber and a reflective part, and is configured to reflect and converge the shock wave generated inside the reflective part to an outside of the reflective part. The reflective part includes: a reflector having a concave surface having a cut surface-of-revolution shape, and a through hole, which is formed coaxially with a rotating axis of the concave surface, and into which the optical fiber is to be inserted; a sealing body configured to seal an opening portion of the concave surface; and a liquid to be charged between the concave surface and the sealing body. The optical fiber has a distal end arranged at a position on a rear side of a focal point of the concave surface, at which the shock wave reflected by the concave surface is convergeable outside the reflective part.

Abstract: A probe (10) transmits and receives diagnostic ultrasound and therapeutic ultrasound. A transmission unit (12) forms a transmission beam of the therapeutic ultrasound having a higher wave number than the diagnostic ultrasound and scans the transmission beam of the therapeutic ultrasound in a therapeutic region set inside a diagnostic region by controlling the probe (10). Since the therapeutic ultrasound having a higher wave number than the diagnostic ultrasound is used, the therapeutic effect is higher than when using a therapeutic ultrasound having a similar wave number to the diagnostic ultrasound, and since the transmission beam of the therapeutic ultrasound is scanned in the therapeutic region, the therapeutic effect is higher than when the transmission beam of the therapeutic ultrasound is not scanned.