公开(公告)号：US12053799B2

公开(公告)日：2024-08-06

申请号：US16514143

申请日：2019-07-17

Applicant: OLYMPUS CORPORATION

Inventor： Shunsuke Matsui

IPC: B06B1/02 ,  A61B8/00 ,  A61B17/00 ,  A61B17/32 ,  A61N7/00 ,  G01N29/34

CPC classification number: B06B1/0215 ,  A61B17/320068 ,  B06B1/0207 ,  A61B8/56 ,  A61B2017/00137 ,  A61N7/00 ,  G01N29/343 ,  G01N29/346 ,  G01N29/348

Abstract: A power supply connected to an ultrasonic treatment instrument. The power supply includes an oscillator, a field programmable gate array (FPGA), and a drive circuit. The oscillator generates a basic clock. The FPGA receives the basic clock generated by the oscillator. The FPGA generates a pulse width modulation (PWM) wave for driving a ultrasonic transducer based on the basic clock. The drive circuit is connected to the FPGA, and digitally amplifies the PWM wave to output the amplified PWM wave. The FPGA outputs the PWM wave when an output signal for driving the ultrasonic treatment instrument is input, and the PWM wave is modulated by comparing a value of first data representing a sine wave in constant current control with a value of second data representing a reference wave. The FPGA outputs a rectangular wave with a predetermined duty ratio when the output signal is not input.

公开(公告)号：US10022569B2

公开(公告)日：2018-07-17

申请号：US15361240

申请日：2016-11-25

Applicant: OLYMPUS CORPORATION

Inventor： Shunsuke Matsui ,  Ko Kawashima

IPC: A61H1/00 ,  A61N7/00 ,  A61B18/00 ,  B06B1/02 ,  A61B17/32 ,  A61B17/00

Abstract: A driving device includes an output voltage decomposing unit which decomposes an output voltage applied to an ultrasonic transducer into a basic and harmonic components; an output current decomposing unit which decomposes an output current flowing through the ultrasonic transducer into a basic and harmonic components; a capacitor current calculator which calculates a basic and harmonic components of a capacitor current, based on the basic and harmonic components of the output voltage; a driving current calculator which calculates a basic and harmonic components of a driving current based on the basic and harmonic components of the output current and the capacitor current, a driving current summing unit which sums up the basic and harmonic components of the driving current, and a constant current controller which generates constant current control data.