FREQUENCY CONTROL METHOD AND SYSTEM FOR ULTRASONIC SURGICAL TOOL - INNOLCON MEDICAL TECHNOLOGY SUZHOU CO LTD

Title:

FREQUENCY CONTROL METHOD AND SYSTEM FOR ULTRASONIC SURGICAL TOOL

Document Type and Number:

WIPO Patent Application WO/2019/024637

Kind Code:

A1

Abstract:

A frequency control method and system for an ultrasonic surgical tool. The frequency control method for an ultrasonic surgical tool comprises: obtaining a maximum value of a phase difference between an operating voltage and an operating current of the ultrasonic surgical tool (101); determining whether the maximum value is less than zero (102), so as to obtain a first determination result; if the first determination result indicates that the maximum value is not less than zero, adjusting an operating frequency of the ultrasonic surgical tool to a frequency corresponding to the phase difference equaling to zero (103); if the first determination result indicates that the maximum value is greater than zero, subtracting a preset value from the maximum value to obtain a phase lock-point (104); and adjusting, according to the phase lock-point, the operating frequency of the ultrasonic surgical tool (105). The frequency control method for an ultrasonic surgical tool solves a problem in which, in some situations where the phase of a self-resonant frequency does not exceed 0, ultrasonic surgical tools fail to operate normally, or operate inefficiently, thereby improving operation efficiency and stability of ultrasonic surgical tools.

Inventors:

WANG FUYUAN (CN)
LIU ZHENZHONG (CN)
YAN ZHONGYU (CN)
LUO WEI (CN)

Application Number:

PCT/CN2018/093989

Publication Date:

February 07, 2019

Filing Date:

July 02, 2018

Export Citation:

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Assignee:

INNOLCON MEDICAL TECHNOLOGY SUZHOU CO LTD (CN)

International Classes:

A61B17/32

Foreign References:

CN205411229U	2016-08-03
CN104252146A	2014-12-31
CN104772450A	2015-07-15
EP1199110A2	2002-04-24

Other References: