公开(公告)号：US20250033085A1

公开(公告)日：2025-01-30

申请号：US18716352

申请日：2022-11-21

Applicant: NITERRA CO., LTD.

Inventor： Shinsuke ITOH ,  Kota YOKOYAMA ,  Satoshi SUZUKI ,  Ryo SUZUKI ,  Takashi KASASHIMA

IPC: B06B3/00

Abstract: An ultrasonic wave converging part (12) and a waveguide (13) have a through-hole (20) penetrating the converging part and the waveguide in a front-rear direction. An inner circumferential surface (20A) forming the through-hole has inner circumferential surface (21) and deformed portion (23) located on a front-end side relative to the inner circumferential surface. The inner circumferential surface has, as a cross-sectional shape in the front-rear direction, a shape linearly extending in the front-rear direction. The deformed portion is, in a cross section in the front-rear direction, at least one of a portion located inward of the inner circumferential surface and a portion located outward of the inner circumferential surface (FIG. 1 showing the portion located inward of the first inner circumferential surface), and is formed in a part of or over an entire circumference (FIG. 1 showing the entire circumference) of the inner circumferential surface in a circumferential 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.