CN210784791U - Electric tooth brush - Google Patents

Abstract

The utility model relates to an electric toothbrush, include: the toothbrush comprises a power supply, a toothbrush head, a first circuit for outputting a first current and used for driving the toothbrush head to vibrate, and a second circuit for outputting a second current and used for outputting the current to an oral cavity through an electrode arranged on the toothbrush head. The electric toothbrush of the utility model can kill dental plaque when brushing teeth normally and electrically.

Description

Electric tooth brush

Technical Field

The utility model relates to the field of oral hygiene, in particular to an electric toothbrush with a micro-current sterilization function.

Background

In recent years, along with the improvement of living standard of people, the oral hygiene problem is more and more emphasized. The electric toothbrush is used as a substitute of a common toothbrush, and has the advantages of high cleaning efficiency, controllable cleaning force and the like, and is widely accepted by people.

However, practice proves that the killing and inhibition of oral germs by pure tooth brushing is limited, and the effect of sterilizing and treating oral diseases cannot be achieved.

Periodontitis, gingivitis, and caries are infectious diseases of the oral cavity where oral biofilms and bacteria play a dominant role. The pathogenesis of implant failure (e.g., peri-implantitis), denture stomatitis, and oral yeast infections (e.g., candida infections) is also associated with biofilm formation. Oral biofilm begins as a dental pellicle forms on the teeth. The film is composed of salivary proteins which coat the exposed surfaces of the teeth, primarily the gingival epithelial cells, to which planktonic bacteria initially adhere. Aerobic bacteria, including gram-positive cocci, such as streptococcus oralis, are early colonies that form initial biofilm colonies, adhering to the bacteria primarily through cell division. Once the initial colony is formed, other co-aggregating bacterial species, such as Fusobacterium nucleatum, Porphyromonas and other gram-negative anaerobes, attach to the previously formed colony. As these colonies mature, they grow out to cover the lower gingival surface of the gingiva and begin to cause inflammation in the periodontal tissue.

Periodontal disease is considered by both dentists and physicians to be a risk factor for various systemic diseases. These diseases include cardiovascular disease, poor pregnancy outcome and diabetes, with newly discovered evidence supporting its association with pancreatic disease and arthritis. Although many studies establish a correlation between periodontal disease and these systemic conditions, in most cases, its causal relationship is under constant investigation.

It was found that oral bacteria were not able to survive when exposed to low microampere direct current.

Such methods of killing oral bacteria and treating bacterial-induced diseases such as gingivitis have been disclosed in Nachman, us patent 4,244,373 on 1981-13 and Detsch, us patent 4,509,519 on 1985-4-9. Killing oral bacteria has the added benefit of preventing dental caries or tooth decay.

The present invention therefore seeks to incorporate such a method of sterilisation into an electric toothbrush. This idea, while simple, has certain difficulties in practical operation. First, the power consumption of an electric toothbrush is a relatively strong current for driving a motor to vibrate bristles or to cause a water flow to generate an ultrasonic effect at a certain frequency. Such a strong current may cause irritation and discomfort to the person. Secondly, brushing and electrode treatment are two different modes of use, and how to switch properly is a matter of consideration.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an electric toothbrush with micro-current sterilization function based on the above problems.

In order to achieve the above object, the present invention is achieved by providing an electric toothbrush, including: the toothbrush comprises a power supply, a toothbrush head, a first circuit for outputting a first current and used for driving the toothbrush head to vibrate, and a second circuit for outputting a second current and used for outputting the current to an oral cavity through an electrode arranged on the toothbrush head.

The second circuit is also provided with an output current detection device, and when the output current exceeds or is lower than the preset output second current, the current detection device gives an alarm through a buzzer or an indicator light. The second circuit is also provided with an output regulating device for regulating the magnitude of the output current. The electrodes are in close contact with gingival tissue to form a loop when in use. The second current range is 50-300 microamps.

The utility model has the advantages that: the common toothbrush can only clean impurities on the surfaces of teeth, and can not effectively kill dental plaque, and the dual-mode toothbrush can kill the dental plaque while brushing teeth normally.

Drawings

Fig. 1 is a circuit block diagram of the present invention;

fig. 2 is a schematic structural diagram of an embodiment of the present invention.

Detailed Description

The invention will be described in more detail with reference to the following drawings and examples:

referring to fig. 1, fig. 1 is a circuit block diagram of the present invention. The power supply in fig. 1 is divided into two circuits, a first circuit and a second circuit, by a controller. The first circuit drives the direct current motor to vibrate the brush head, so that the function of brushing teeth by the electric toothbrush is realized. The second circuit generates a micro-current of 50-300 microamperes which discharges to the gingival part in the mouth through one or several pairs of electrodes provided on the brush head of the toothbrush and forms a circuit between the gingiva. The micro-current is used for killing bacteria in the oral cavity and preventing the formation of dental plaque. The controller is also connected with the indicator light and/or the buzzer, the controller detects the output current of the second circuit, and when the output current of the second circuit is higher than or lower than a preset output range, namely 50-300 milliamperes, the controller can give an alarm to prompt a user through the blinking of the indicator light or the sounding of the buzzer. This is because, when the resistance value in the oral cavity of a human body fluctuates from 0 to 50K Ω at any time, it is difficult to ensure that the output current of the second circuit is always within the range of 50 to 300 ma, and of course, the output current of the second circuit is too small due to incorrect posture of the toothbrush. The utility model discloses still be equipped with an adjustment switch and link to each other with the controller. Besides adjusting the current output of the first circuit to control the frequency and amplitude of the toothbrush vibration, the adjusting switch can also adjust the output magnitude of the second current within a certain range. Therefore, the user can adjust the second current to return to the set output current range when the indicator light and/or the buzzer alarms.

Referring to fig. 2, fig. 2 is a schematic structural diagram of an embodiment of the present invention. In fig. 2, the mechanical structure of the electric toothbrush mainly comprises a controller 1, a circuit board 2 having a first circuit and a second circuit, a brush head 3, a dc motor 4 (including a driving shaft and a vibrating member), a power source 5 (including a charging part if a rechargeable battery is used), and a housing 6. The brush head 3 portion includes positive and negative electrodes 31 and general bristles 32.

According to different designs and structures of the final circuit board 2, the circuit board 2 can be transversely superposed and perpendicular to the shell direction of the toothbrush main body, and can be divided into a plurality of circuit boards according to functions, such as a first circuit board, a second circuit board, a controller chip circuit board and a power supply circuit board. Of course, the skilled person can arbitrarily specify, according to the functional and structural reasons, the division of the functions and the number of the circuit boards. The circuit board 2 may also be placed horizontally on top of each other, i.e. horizontally in the direction of the toothbrush body.

The controller 1 of the toothbrush has two functions simultaneously, one is to control the rotating speed and the direction of a motor, and the other is to detect and control the stability of output current; the first and second circuits of the toothbrush provide one of the drive currents to the dc motor and the other function is to provide dc current to the conductive electrodes 31. The arrangement of the anode and the cathode 31 of the conductive electrode is the horizontal parallel relative position of the toothbrush head 3, which ensures that the current can effectively sterilize. The conductive electrode 31 needs to be in close proximity to the gingival part of the mouth to allow a steady direct current to effectively pass through the gingiva and kill subgingival plaque.

The toothbrush head 3 is composed of bristles 32 and conductive electrodes 31, and can provide stable microampere direct current for gingival tissues while normally vibrating for brushing teeth. The conductive electrode 31 may be conductive silicone, metal electrode sheet, or other conductive material. The direct current motor 4 provides a vibration source for the toothbrush head 3; the power supply part 5 is a power supply system of the toothbrush and provides direct current power supply for all the circuit boards 2 (if the circuit boards are rechargeable batteries, the power supply part has a charging control function); the part of the shell 6 is a main body shell of the toothbrush and provides support for internal devices such as the controller 1 and the direct current motor 4.

Those skilled in the art can make other modifications within the spirit of the present invention, and all modifications derived from the spirit of the present invention should be within the scope of the present invention.

Claims (5)

1. The electric toothbrush comprises a power supply, a toothbrush head, a first circuit for outputting a first current and a second circuit for outputting a second current, wherein the first circuit is used for driving the toothbrush head to vibrate.

2. The electric toothbrush of claim 1, wherein the second circuit is further provided with an output current detection means which alarms by a buzzer or an indicator lamp when the output current exceeds or falls below a predetermined output second current.

3. The powered toothbrush of claim 1, wherein the second circuit further comprises an output adjustment device for adjusting the magnitude of the output current.

4. The powered toothbrush of claim 1, wherein the electrodes are in intimate contact with gingival tissue in use to form a circuit.

5. The powered toothbrush of claim 1, wherein said second current range is 50-300 microamperes.

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