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Drive noise tolerant plaque detection

A plaque, drive system technology, applied in the direction of measuring devices, diagnostic records/measurements, instruments, etc., can solve problems such as residual problems

Inactive Publication Date: 2015-08-26
KONINKLJIJKE PHILIPS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Despite improvements in toothbrush design, the problem persists because plaque detection circuitry must operate in close proximity to the drive train of the toothbrush when incorporated into an electronic toothbrush

Method used

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  • Drive noise tolerant plaque detection
  • Drive noise tolerant plaque detection
  • Drive noise tolerant plaque detection

Examples

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Embodiment Construction

[0037] This disclosure describes various embodiments of systems, devices and methods for assisting users in cleaning their teeth, in particular, by informing users whether they have actually removed plaque from their teeth and whether they have completely removed Plaques, so that users can feel at ease and make users develop good habits. Preferably, the information is provided in real time during brushing / cleaning, otherwise consumer acceptance is likely to be low. For example, it is useful for a dental appliance (such as a toothbrush or dental flosser) to provide a signal to the user when the teeth the user is brushing are deemed clean so that the user can move on to the next area where additional brushing / cleaning may be required due to plaque build-up. a tooth. This can reduce the user's brushing / cleaning time, and result in a better and more efficient brushing / cleaning routine that focuses the user's attention on specific problem areas of the teeth (eg, areas with plaque)...

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PUM

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Abstract

A dental implement (4) is presented that includes, in one embodiment, a light source (331) configured to emit an excitation light, and at least one optical unit for removing reflected excitation light and receiving a fluorescence light beam from the teeth. The dental implement further includes a detector (333) configured to receive the fluorescence light beam for detecting plaque and communicating a plaque identification signal of the teeth based on frequency domain lifetime measurements via a plaque detection circuit configured to reduce noise generated by a drive train at a drive train frequency (fdt). The plaque identification signal is demodulated to an intermediate frequency (fIF) such that the drive train frequency and the intermediate frequency are derived from a same master clock.

Description

technical field [0001] The present disclosure relates to dental cleaning implements, such as toothbrushes. More specifically, the present disclosure relates to electronic toothbrushes for plaque detection based on time-resolved fluorescence and, in particular, frequency-domain lifetime measurements, as described, for example, in co-pending application US 61 / 739415 (Atty. Refer to the discussion in 2012PF02051). Background technique [0002] Toothbrushes are designed to clean teeth by removing biofilm and food debris from tooth surfaces and interproximal areas in order to improve oral health. Various electronic toothbrush designs have been created to provide improved brushing performance by increasing the speed of the brush head and using acoustic and in some cases ultrasonic vibrations. Modern toothbrushes are very effective at removing plaque. The consumer only needs to scrub the problem area for a few seconds to remove the plaque being scrubbed. However, in the absence...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/00H04B10/67G02F2/00
CPCG01N21/6486G01N21/645A61B5/4836A61B5/4547A61B5/0071A61B5/0088A61B5/7228A46B15/0044A61B5/7282A61B2576/02A61C1/07
Inventor S·C·迪恩A·J·戴维
Owner KONINKLJIJKE PHILIPS NV