公开(公告)号：US20250149017A1

公开(公告)日：2025-05-08

申请号：US18837380

申请日：2023-10-16

Applicant: NITTERRA CO., LTD. ,  THE UNIVERSITY OF TOKYO

Inventor： Shinsuke ITOH ,  Kota YOKOYAMA ,  Satoshi SUZUKI ,  Ryo SUZUKI ,  Takashi KASASHIMA ,  Takeshi MORITA ,  Masatoshi TSUCHIDA

IPC: G10K11/28

Abstract: An ultrasonic generator (10) includes an ultrasonic wave generation source (11), an ultrasonic wave converging portion (12), and a waveguide (13). The waveguide (13) includes a first shaft portion (21), a second shaft portion (22), and a jutting out portion (30). The first shaft portion (21) extends from the ultrasonic wave converging portion (12) to one side in a predetermined direction. The second shaft portion (22) is disposed on the one side in the predetermined direction relative to the first shaft portion (21) and extends in the predetermined direction. The jutting out portion (30) is provided between the first shaft portion (21) and the second shaft portion (22) in the predetermined direction. The jutting out portion (30) juts out more outward than the outer circumferential surfaces of the first shaft portion (21) and the second shaft portion (22) in a plane direction orthogonal to the predetermined direction.

公开(公告)号：US20240138812A1

公开(公告)日：2024-05-02

申请号：US18495163

申请日：2023-10-26

Applicant: Niterra Co., Ltd. ,  THE UNIVERSITY OF TOKYO

Inventor： Satoshi SUZUKI ,  Kota YOKOYAMA ,  Ryo SUZUKI ,  Shinsuke ITOH ,  Takashi KASASHIMA ,  Takeshi MORITA ,  Shoki IEIRI

IPC: A61B8/00

CPC classification number: A61B8/445 ,  A61B8/4483

Abstract: An ultrasonic wave generation device including: an ultrasonic wave generation source; an ultrasonic wave condensation part; and a waveguide. The ultrasonic wave condensation part has a first reflection surface opposed to the ultrasonic wave generation source and a second reflection surface opposed to the first reflection surface. The first reflection surface reflects the ultrasonic wave, generated from the ultrasonic wave generation source, toward the second reflection surface. The second reflection surface reflects the ultrasonic wave, which has been reflected by the first reflection surface, toward the waveguide so as to introduce the ultrasonic wave into the waveguide. The waveguide protrudes from the first reflection surface to a side opposite the second reflection surface. A recessed portion is formed from the first reflection surface to the second reflection surface side along an outer circumferential surface of the waveguide.