公开(公告)号：US20210068656A1

公开(公告)日：2021-03-11

申请号：US17043317

申请日：2019-03-26

Applicant: NIDEK CO., LTD.

Inventor： Tetsuyuki MIWA ,  Kazunari SHIMIZU ,  Shirohisa KOBAYASHI ,  Tsutomu UEMURA ,  Kenji NAKAMURA

IPC: A61B3/16

Abstract: A non-contact ultrasonic tonometer for measuring the eye pressure of an examinee's eye by use of ultrasound includes a Langevin transducer. The Langevin transducer applies ultrasound to the examinee's eye to measure the eye pressure of the examinee's eye. Further, A non-contact ultrasonic tonometer for measuring the eye pressure of an examinee's eye by use of ultrasound includes: ultrasonic generating means for generating ultrasound; a support base supporting the ultrasonic generating means; and attaching means for attaching the ultrasonic generating means to the support base.

公开(公告)号：US20220031160A1

公开(公告)日：2022-02-03

申请号：US17280057

申请日：2018-11-23

Applicant: NIDEK CO., LTD.

Inventor： Tetsuyuki MIWA ,  Tsutomu UEMURA ,  Andrea CARDONI ,  Ignacio MARTINEZ GONZALEZ

IPC: A61B3/16

Abstract: An ultrasonic tonometer, which measures an intraocular pressure of a subject eye using an ultrasonic wave, has an ultrasonic actuator including an ultrasonic element that generates an ultrasonic wave and a sonotrode that propagates the ultrasonic wave generated from the ultrasonic element, and irradiating the subject eye with the ultrasonic wave. The sonotrode includes an uneven portion in which a thickness of the sonotrode varies in a sound axis direction of the ultrasonic wave.

公开(公告)号：US20210259548A1

公开(公告)日：2021-08-26

申请号：US17255036

申请日：2019-07-02

Applicant: NIDEK CO., LTD.

Inventor： Tetsuyuki MIWA ,  Tsutomu UEMURA ,  Kazunari SHIMIZU

IPC: A61B3/16 ,  A61B3/00

Abstract: An ultrasonic tonometer for measuring the eye pressure of an examinee's eye by means of an ultrasonic wave includes an ultrasonic actuator having an ultrasonic element and configured to irradiate the examinee's eye with the ultrasonic wave, and current adjustment means configured to adjust a current applied to the ultrasonic element to control the sound pressure or acoustic radiation pressure of the ultrasonic wave. With this configuration, the ultrasonic tonometer solving at least one of typical problems can be provided. For example, the ultrasonic tonometer capable of properly irradiating the examinee's eye with the ultrasonic wave can be provided.