公开(公告)号：US20230240701A1

公开(公告)日：2023-08-03

申请号：US18299775

申请日：2023-04-13

Applicant: FUJIFILM Corporation

Inventor： Kohei HIGASHI ,  Koichiro NAKAMURA

IPC: A61B17/32

CPC classification number: A61B17/320068 ,  A61B2017/320082

Abstract: An ultrasonic treatment tool includes a grip part that grips a structure in a subject; and an ultrasound oscillator unit that is provided in the grip part and disposed at a position facing the gripped structure. A piezoelectric material constituting the ultrasound oscillator unit has a mechanical quality coefficient of 500 or more.

公开(公告)号：US20230380847A1

公开(公告)日：2023-11-30

申请号：US18447160

申请日：2023-08-09

Applicant: FUJIFILM Corporation

Inventor： Kohei HIGASHI ,  Koichiro NAKAMURA

IPC: A61B17/22 ,  A61B17/29

CPC classification number: A61B17/22004 ,  A61B17/29 ,  A61B2017/00778

Abstract: Ultrasound oscillators emit ultrasonic waves. An ultrasonic driving part drives the ultrasound oscillators such that the ultrasonic waves propagates in a first direction D1 from one side toward the other side and propagates in a second direction D2 opposite to the first direction D1 in a structure S. The ultrasonic driving part drives the ultrasound oscillators by changing frequencies of the ultrasound oscillators such that a current value flowing through the ultrasound oscillators is a maximal current value.

公开(公告)号：US20240398438A1

公开(公告)日：2024-12-05

申请号：US18803716

申请日：2024-08-13

Applicant: FUJIFILM Corporation

Inventor： Kohei HIGASHI ,  Koichiro NAKAMURA

IPC: A61B17/32 ,  A61B17/00

Abstract: An ultrasonic treatment tool includes a grip part that is provided at a distal end part and that grips a biological tissue in a subject, an ultrasound oscillator that transmits ultrasonic oscillation to the biological tissue gripped by the grip part, and a stress concentration structure that is provided at the grip part and that protrudes from a grip surface facing the biological tissue, in which the stress concentration structure is a long protrusion disposed along a longitudinal direction of the grip part, and a distal end part from the grip surface in a protruding direction is formed in a continuous sawtooth shape.