公开(公告)号：US20180296265A1

公开(公告)日：2018-10-18

申请号：US16014832

申请日：2018-06-21

Applicant: OLYMPUS CORPORATION

Inventor： Shogo HASEGAWA ,  Sadayoshi TAKAMI

IPC: A61B18/14 ,  A61B18/10

Abstract: A control device controls a surgical instrument including a heater. The control device includes a first power supply, a second power supply, a resistance value calculation section, and an output control circuit. The first power supply outputs a first current having a first frequency and supplied to the heater. The second power supply outputs a second current combined with the first current, supplied to the heater and having a second frequency different from the first frequency. The resistance value calculation section separates a signal component related to the second current from the first and second currents having passed through the heater, and calculates a heater resistance value based on the signal component. The output control circuit controls a temperature of the heater based on the heater resistance value.

公开(公告)号：US20220000514A1

公开(公告)日：2022-01-06

申请号：US17472201

申请日：2021-09-10

Applicant: OLYMPUS CORPORATION

Inventor： Shogo HASEGAWA

IPC: A61B17/32 ,  G01N29/12

Abstract: A control device includes: an energy source configured to supply an input combined signal having a plurality of frequency components to an ultrasound transducer; a detector configured to detect an output combined signal resulting from a change of the input combined signal by a frequency response of the ultrasound transducer, and output a detected signal according to the output combined signal; and a processor configured to separate the detected signal into a plurality of frequency components; and based on the plurality of frequency components that have been separated, determine whether or not to perform a scan, and determine a resonance frequency of the ultrasound transducer.