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Power toothbrush using a shear thickening fluid

An electric toothbrush, fluid technology, applied in the direction of cleaning methods using liquid, dentistry, cleaning teeth, etc., can solve the problems of no cleaning effect, time-consuming, etc.

Active Publication Date: 2007-12-05
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This cleaning effect occurs with an acoustic (sound wave) frequency toothbrush operating in the oral fluid, which takes time and often does not produce an optimal cleaning effect

Method used

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  • Power toothbrush using a shear thickening fluid
  • Power toothbrush using a shear thickening fluid
  • Power toothbrush using a shear thickening fluid

Examples

Experimental program
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Effect test

Embodiment Construction

[0009] Fig. 1 shows the part of the combined electric toothbrush of the present invention, which is generally indicated by 10. The electric toothbrush includes a handle portion 12, a neck portion 14 and a head portion 16. The combination of the neck 14 and the head 16 is called a brush head assembly. A conventional rechargeable battery 18 and a charging coil 19 for periodically charging the battery 18 are provided in the handle 12. There is also a control circuit 20 in the handle 12, which is combined with battery control and supplies power to the acoustic drive system 24. There may be multiple implementations of the acoustic drive system 24, including an implementation similar to an audio speaker system that generates sound wave action. Other possibilities include piston drive systems or combinations of coils, driven parts and vibrating surfaces. However, it should be understood that the present invention is not limited to a specific acoustic drive system.

[0010] The drive syst...

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PUM

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Abstract

The combination of a power toothbrush and an oral fluid, in which the oral fluid has the characteristic of changing viscosity, depending upon the action of a workpiece element portion, such as a flexible membrane, of the power toothbrush. The power toothbrush has two operating conditions. In one condition, the membrane moves toward and away from the teeth at a speed such that the fluid is liquid and flows easily to and around the teeth, including the interproximal regions. In the second condition, the membrane is moved at a significantly higher speed, in response to which the viscosity of the fluid increases substantially, having a shear rate at least as great as necessary to remove biofilm from the teeth.

Description

Technical field [0001] The present invention relates generally to electric toothbrushes, and more specifically, the present invention relates to a combination of electric toothbrushes and fluids used in the electric toothbrushes, which changes viscosity in response to the operation of the electric toothbrushes. Background technique [0002] Generally, electric toothbrushes for cleaning teeth (including removing plaque) are well known. Typically, an electric toothbrush relies on a set of bristles attached to the bristle mounting plate, and then the bristle mounting plate is moved by a driver mechanism to scrub the tooth surface. The exposed surfaces of the teeth of various known bristle structures produce different brushing effects, and reach between the teeth or only under the gum line to a certain small extent. However, this kind of toothbrush relies on the scrubbing action of the bristles used for actual cleaning, which typically requires the user to apply a certain amount of p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61C17/20
CPCA61C17/20
Inventor J·格雷茨M·A·A·沙尔利格
Owner KONINKLIJKE PHILIPS ELECTRONICS NV
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