JPWO2021239548A5

JPWO2021239548A5 -

Info

Publication number: JPWO2021239548A5
Application number: JP2022572344A
Authority: JP
Publication date: 2024-06-21

Claims

An oral treatment device comprising: an oral treatment unit for inserting into an oral cavity, the oral treatment unit being adapted to limit an electromagnetic field having a frequency in a range of 100 kHz to 300 MHz ; and a base unit for use in combination with the oral treatment unit, the oral treatment unit comprising :
a first cleaning element coupled or integral with the oral treatment unit;
a meta-material structure coupled or integrated with the oral treatment unit to receive an initial electromagnetic field and output a focused electromagnetic field , the meta-material structure comprising:
A negative effective dielectric constant;
Negative effective permeability;
a negative refractive index;
1. An oral treatment device comprising: a metamaterial structure having a passive electromagnetic field focusing function that area confines the received initial electromagnetic field to a near field region of the metamaterial structure, the metamaterial structure comprising a unit cell .

The oral treatment device of claim 1 , wherein the unit cells are arranged in an array.

Each unit cell is
Planar conductive spiral structure,
A planar conductive ring structure,
Planar conductive meandering line structure,
3D conductive spiral structure,
a 3D conductive ring structure, or
3. The oral treatment device of claim 1 or 2 , comprising a 3D conductive serpentine line structure.

The oral treatment device of claim 1 , wherein the oral treatment unit further comprises a second cleaning element, the meta-material structure forming at least a portion or all of the second cleaning element .

The metamaterial structure comprises:
a first unit cell for receiving and focusing a first electromagnetic field having a first frequency within a first frequency range;
and a second unit cell configured to receive and focus a second electromagnetic field having a second frequency within a second frequency range different from the first frequency range .

The oral treatment device of claim 1 , wherein the oral treatment unit further comprises one or more transmitter coils that generate the initial electromagnetic field that is received by the meta-material structure.

6. The oral treatment device of claim 5, further comprising a multi-harmonic transmitter coil that generates a first electromagnetic field within a first frequency range that is received by the first unit cell and a second electromagnetic field within a second frequency range that is received by the second unit cell.

The oral treatment device of claim 5, wherein the oral treatment unit further comprises a first transmitter coil generating an electromagnetic field having a first frequency within a first frequency range and a second transmitter coil generating an electromagnetic field having a second frequency within a second frequency range.

9. The oral treatment device according to claim 6 , wherein the unit cell has a helical structure, and the coil loops of the one or more transmitter coils and the helical structure of the unit cell are aligned parallel and/or concentrically .

The base unit includes:
Power supply,
an electrical signal generating unit coupled to the power source for generating an electrical signal having a frequency within a given frequency range;
6. The oral treatment device according to claim 1, further comprising: one or more transmitter coils in communication with the electrical signal generating unit for generating and transmitting at least one electromagnetic field having a frequency within the given frequency range to the oral treatment unit .

The oral treatment device of claim 10 , wherein the oral treatment unit is temporarily coupled to the base unit.

The base unit includes:
Power supply,
10. The oral treatment device according to claim 6, further comprising an electrical signal generating unit coupled to the power source for generating an electrical drive signal having a frequency within a given frequency range to be supplied to the one or more transmitter coils of the oral treatment unit .

13. The oral treatment device of claim 12, wherein the oral treatment unit is temporarily coupled to the base unit, the oral treatment unit further comprising a first electrical contact, the base unit further comprising a second electrical contact, and the first electrical contact and the second electrical contact are in contact when the oral treatment unit is coupled to the base unit.

the oral treatment unit is an electric toothbrush head or part of an electric toothbrush head, the electric toothbrush head preferably comprising a fluid ejection nozzle, and the base unit is an electric toothbrush handle, or
14. An oral treatment device according to any one of claims 1 to 13 , wherein one or more oral treatment units are arranged to form at least a portion of an arcuate portion of an oral treatment mouthpiece, and the base unit is an electric mouthpiece handle.