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Title:
TOOTHBRUSH
Document Type and Number:
WIPO Patent Application WO/2020/145382
Kind Code:
A1
Abstract:
The present invention addresses the problem of specifying an ultrasound frequency which is used with an ultrasound toothbrush.　To solve the problem, the present invention employs the following means. That is to say, provided is a toothbrush comprising at least a grip part comprising a signal generation part which outputs a drive signal supplied to an oscillator, a protrusion part which is disposed on an end part of the grip part, an oscillation part in which the oscillator is positioned on the leading end of the protrusion part, and a brush which is positioned in a position facing the oscillation part, said toothbrush being characterized by the frequency of the drive signal being between 3-5MHz inclusive.

Inventors:
KURAHASHI TSUKASA (JP)
TAMASHIRO DAIKI (JP)
Application Number:
PCT/JP2020/000642
Publication Date:
July 16, 2020
Filing Date:
January 10, 2020
Export Citation:
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Assignee:
ITO CO LTD (JP)
International Classes:
A46B15/00; A61C17/22; A61C17/32
Foreign References:
JP2011004883A2011-01-13
JP2003061985A2003-03-04
JPS5222492A1977-02-19
JP2005177253A2005-07-07
JPS6093400U1985-06-26
JPS58190474U1983-12-17
JP2003061985A2003-03-04
JP2005102837A2005-04-21
JP2004202065A2004-07-22
JP2019002982A2019-01-10
Other References:
See also references of EP 3909466A4
Attorney, Agent or Firm:
FUKUCHI Takeo (JP)
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