公开(公告)号：US11583307B2

公开(公告)日：2023-02-21

申请号：US15930654

申请日：2020-05-13

Applicant: OLYMPUS CORPORATION

Inventor： Kiichiro Sawada ,  Hiroyuki Araki ,  Naoki Narumi

IPC: A61B17/32 ,  A61B17/16

Abstract: An ultrasonic transmitter unit includes: a sheath that forms a cylindrical shape and is having a proximal end and a distal end; an ultrasonic transmitter configured to be inserted into the sheath; and a cover member that covers a part of the ultrasonic transmitter and has an inner surface and an outer surface. The ultrasonic transmitter includes: a first area surrounded by the sheath; a second area protruding from the distal end of the sheath; and a distal-end treatment portion provided in a distal end of the second area. The cover member covers the second area of the ultrasonic transmitter, and exposes the distal-end treatment portion of the ultrasonic transmitter to an outside, and is made of fluorine-based resin.