Ultrasonic scaling appliances with spatial, temporal and/or frequency variation

A kind of utensils and tooth cleaning technology, applied in the field of utensils, can solve the problems of ineffective cleaning, difficult maintenance, lack of concentration, etc.

Active Publication Date: 2011-12-07
KONINK PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Additionally, it is difficult to maintain a sufficient concentration of bubbles in the tooth recesses where cavitation can actually have the most beneficial effect since scrubbing cannot effectively clean
This lack of vesicle concentration may be due to vesicle disruption by the same ultrasound that normally produces the cleaning effect

Method used

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  • Ultrasonic scaling appliances with spatial, temporal and/or frequency variation
  • Ultrasonic scaling appliances with spatial, temporal and/or frequency variation
  • Ultrasonic scaling appliances with spatial, temporal and/or frequency variation

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Embodiment Construction

[0013] As indicated above, it is known that dental appliances, particularly toothbrushes, incorporate ultrasonic / microbubble systems to aid in cleaning teeth, as discussed in the above patent and other patents and patent applications. Typically, in these known systems, the ultrasound signal is limited to a single frequency with a consistent signal strength. However, the systems described herein include the capability of one or more of the following features: (1) an array of transducer elements for providing more than one source location and / or direction of an ultrasound beam; (2) an ultrasound Amplitude modulation of the signal to allow new bubbles to refill the area that was just cleaned; and (3) frequency modulation of the ultrasonic signal to produce a constant frequency change within a prescribed range. In addition, another feature is the use of phase modulation, ie changing the phase of the ultrasound signal, to steer and focus the ultrasound signal.

[0014] Each of the...

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Abstract

The appliance includes an appliance body (12) and a system for generating microbubbles (20) and a system for generating an ultrasound signal beam (22) in a frequency range that activates at least some of the microbubbles. The appliance includes at least one of: (a) an array of ultrasound transducer elements (40) that generate a plurality of beams of ultrasound signals; (b) an amplitude modulation assembly (51) for modulating the amplitude of the ultrasound signals; and (c) a frequency modulation system (61) for varying the frequency of the ultrasound signal over a selected range to affect the range of microbubble sizes.

Description

technical field [0001] The present invention relates generally to dental appliances, such as toothbrushes (both electric and manual), and also to oral guards for cleaning teeth, and more particularly to oral guards that include the use of ultrasound and microbubbles to provide or improve cleaning. Such utensils. Background technique [0002] Ultrasound-induced cavitation of air microbubbles is known to clean biofilms on tooth surfaces, and to clean biofilms below the gum line. An example of such ultrasound techniques is shown in US Patent No. 5,138,733 to Bock. Other examples include US Patent No. 3,809,977 to Balamuth and US Patent No. 7,269,873 to Brewer et al. Additionally, there are commercial dental appliances that utilize an ultrasonic / microbubble protocol to clean teeth. However, these appliances often suffer from one or more significant disadvantages. [0003] First, although the cleaning action produced by microbubble cavitation can generally be stronger near so...

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.D.弗拉塞
Owner KONINK PHILIPS ELECTRONICS NV
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