CN113559418A

CN113559418A - Micro-current oral cavity sterilization instrument with adjustable current direction

Info

Publication number: CN113559418A
Application number: CN202010359688.8A
Authority: CN
Inventors: 张智超; 朱文裕; 杨伟强
Original assignee: Shanghai Kushi Medical Technology Co ltd
Current assignee: Shanghai Kushi Medical Technology Co ltd
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2021-10-29

Abstract

The invention provides a micro-current oral cavity sterilizer with adjustable current direction, which comprises a tooth socket, a lip side electrode and a tongue side electrode which are arranged on the tooth socket, and a power supply for supplying power to the lip side electrode and the tongue side electrode, wherein the polarity of the power supply can be switched intermittently, so that the sterilization effect of the whole oral cavity is more uniform and more obvious.

Description

Micro-current oral cavity sterilization instrument with adjustable current direction

Technical Field

The invention relates to the field of oral care instruments, in particular to a micro-current oral sterilization instrument with adjustable current direction.

Background

Periodontal disease, as a high incidence of oral disease, is the leading cause of tooth loss in adults in our country. Periodontal diseases include periodontitis and peri-implantitis. Periodontitis is similar to peri-implantitis in clinical manifestations, and is a result of gingival swelling and bleeding, gingival atrophy, tooth looseness and the like, and adult teeth or implanted teeth fall off prematurely. Plaque is the initiating factor in this spectrum of periodontal diseases. Dental plaque is divided into supragingival and subgingival plaque, with the greatest correlation between subgingival plaque and the above-mentioned diseases. The key to the treatment and prevention of the above mentioned periodontal diseases is therefore the control of the subgingival plaque. However, mainstream oral health products, including regular toothbrushes, electric toothbrushes, dental floss, and mouthwashes, can only remove plaque from the gums. For the treatment of subgingival plaque, a dentist typically performs a specific scaling and scraping of the subgingival area, or an antibiotic treatment, in an institution such as an oral hospital. However, the above method is not suitable for removing the subgingival plaque for a long period of time because it causes great damage to teeth or causes resistance to bacteria.

According to US patent US8660669 and related studies, it is clear that electrical stimulation at current intensities tolerable by the human body can have a direct killing effect on microorganisms. The method kills microorganisms by a physical or chemical principle, so that the drug resistance of the microorganisms cannot be caused, the method can be safely used for a long time, and the killing effect cannot be reduced. The principle provides a new idea for treating and preventing periodontal diseases, and the oral liquid has two effects of promoting blood circulation and killing harmful microorganisms in the oral cavity, and inhibits two causes of the oral diseases.

In the above patent, an oral treatment apparatus is disclosed which utilizes the above principles to provide a method for the treatment and prevention of periodontal disease. The oral therapeutic apparatus comprises a plurality of pairs of electrodes which are respectively connected with two poles of a power supply. The tooth socket part and the electrode part with specific structures can be attached to the gum. The electrodes continuously apply current to the gums.

The sterilization instrument is characterized in that the main machine can continuously output micro current to the oral cavity and the gum, the labial side of the gum is positive pole/positive pole, and the lingual side of the gum is negative pole/negative pole. Through the electrodes, a stable microampere level micro-current is formed in the gum. At present, a large number of experiments prove that the current can kill anaerobic bacteria in gingiva, thereby achieving the effects of preventing, relieving and even treating periodontitis.

The effect of current device design is that the magnitude of the current can be adjusted, but no change in current direction can be provided. In addition, it has been shown from the experimental results that the killing rate of bacteria is differentiated between the electrodes, i.e., the areas through which micro-current passes. The killing rate of bacteria near the positive electrode/positive electrode is higher, so that the sterilization effect of the device in the oral cavity can be more uniform through changing the current direction or switching the negative electrode and the positive electrode.

Disclosure of Invention

In view of the above, the present invention provides an implementation scheme of switching the polarity of the electrodes in the oral cavity, and aims to make the device kill bacteria in the gum more uniformly. The invention provides a technical scheme, which can switch the cathode and the anode of the oral cavity sterilization instrument in the oral cavity. The invention provides a micro-current oral cavity sterilizer with adjustable current direction, which comprises a tooth socket, a lip side electrode and a tongue side electrode which are arranged on the tooth socket, and a power supply for supplying power to the lip side electrode and the tongue side electrode, wherein the power supply can intermittently switch the polarity.

The power supply is a constant current source, and the output voltage of the power supply is adjusted according to the current magnitude and the direction of the output end, so that the current of the output end is constant micro-current.

In one embodiment, the power output end is switched to be connected with the mouthpiece electrode through signal control of the main control chip, so that the aim of switching the current flow direction is fulfilled.

Preferably, a relay switch is arranged between the output end of the power supply and the tooth socket electrode, and the output end of the power supply is switched to be connected with the tooth socket electrode through signal control of the main control chip, so that the aim of switching the current flow direction is fulfilled.

Furthermore, a relay switch is arranged between the output end of the power supply and the tooth socket electrode, when the relay switch is positioned at the first position, the output end of the power supply is connected with the lip side electrode, and the tongue side electrode is grounded; when the relay switch is at the second position, the power output end is connected with the tongue side electrode, and the lip side electrode is grounded.

Further, the main control chip controls the two constant current output devices, when the constant current output device on the upper path is in an excited state, a constant current is output, the constant current output device is connected with the tongue side electrode at the moment, and the lip side electrode is connected with the ground wire after passing through fixed impedance; when the main control chip sends out a switching signal, the constant current output device on the upper path is closed, the constant current output device on the lower path is connected with the lip side electrode, and the tongue side electrode is connected with the ground wire after passing through fixed impedance. The rear end of the down constant current output device is connected with a diode, so that the constant current output device is prevented from being damaged by a reverse load. The upper path is provided with a transient diode to lead extra current generated during switching into the ground wire, and the upper path and the lower path are provided with a current stabilizing diode to enable the electric potentials on the tongue side electrode and the lip side electrode to be stable as soon as possible.

The power supply switching frequency is not higher than 10 minutes/time. The power supply trickle current may be 50 to 500 microamperes.

The invention has the significance that the cathode and the anode of the finally output electrode can be conveniently switched, and simultaneously, the experimental verification proves that the sterilization effect is more obvious near the anode of the electrode, thereby proving that compared with the current in only one direction, the scheme can ensure that the sterilization effect of the whole oral cavity is more uniform and more obvious at present.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a block circuit diagram of one embodiment of the present invention;

FIG. 2 is a block diagram of the circuit after polarity switching according to one embodiment of the present invention;

fig. 3 is a circuit block diagram of another embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

Aiming at the problem that the current direction can not be changed in the prior art, the invention provides a solution that a relay switch is arranged between the output end of a constant current source circuit and the output end of a final tooth socket, the output end of the constant current source circuit is switched to be connected with a target electrode of the tooth socket through the signal control of an MCU (Main control chip), and an electrode positioned at the output end of the constant current source circuit is connected with a ground wire, so that the aim of switching the current flow direction is fulfilled.

The present invention is described in further detail below to enable those skilled in the art to practice the invention with reference to the description.

Referring to fig. 1, fig. 1 is a circuit block diagram of an embodiment of the invention.

Fig. 1 is a schematic view of the state of a tooth socket in a gum, and the micro-current oral sterilization instrument in fig. 1 consists of the tooth socket sleeved on the gum 1, a labial electrode 3 of the tooth socket and a lingual electrode 4 of the tooth socket.

Firstly, the device is fixedly connected, namely one output end of the circuit is connected with the lip side electrode 3, and the other output end of the circuit is connected with the tongue side electrode 4. The constant current output device in the circuit adjusts the output voltage of the constant current output device according to the current magnitude and the current direction of the output end, so that the current of the output end is a constant micro current, more preferably, the micro current can be 50-500 microamperes, the effect is started to be reflected when the current reaches 50 microamperes in an experiment, and the user feels too strong crunchy and numb feeling and discomfort when the current exceeds 500 microamperes.

As shown in fig. 1, the lip side electrode 3 is now positive/positive and the tongue side electrode 4 is ground/negative. The main control chip 5 activates the base stage of the signal control triode 7. In the state of fig. 1, the collector level of the transistor 7 is high, no current passes through the relay 6, and the relay 6 is in an unexcited state. At the moment, the current of the constant current output device 8 is directly connected with the lip side electrode 3; the lingual electrode 4 is connected to the ground line, and a constant current flows from the labial side to the lingual side.

The left side in fig. 1 is a circuit part, the main control chip is used for controlling the gear of the relay, as shown in fig. 1, at the moment, the main control chip 5 has no control signal, the relay does not act, and at the moment, the gear of the relay 6 uses two pairs of upper contacts.

Referring to fig. 2 again, fig. 2 is a circuit block diagram after polarity switching according to an embodiment of the invention. As shown in fig. 2, the main control chip 5 sends out a control signal, the relay starts to operate, the contact position moves downwards, the connection mode between the mouthpiece and the circuit is not changed, but the lip side electrode 3 is the ground/cathode and the tongue side electrode 4 is the positive/positive. In the state of fig. 2, the collector of the triode 7 is changed to low potential due to the signal of the main control chip 5, and current continuously flows through the relay 6, so that the relay 6 is in an excited state. At the moment, the internal circuit of the relay 6 is switched and changed, so that the constant current output device 8 is directly connected with the tongue-side electrode 4; the lip side electrode 3 is connected to the ground line, and a constant current flows from the tongue side to the lip side.

In fig. 1, when the main control chip 5 does not output an adjustment signal to the relay 6, the relay 6 is in an initial state, the constant current output device is connected to the mouthpiece lip side electrode 3, the mouthpiece tongue side electrode 4 is connected to the ground line, the lip side electrode 3 is an anode, and the tongue side electrode 4 is a cathode. According to the laboratory results, the bactericidal effect near the labial side is more remarkable at this time.

In fig. 2, after the main control chip 5 outputs the adjustment signal to the relay 6, the relay 6 is in an excited state, the constant current output device is connected with the electrode 4 on the lingual side of the tooth socket, the electrode 3 on the labial side of the tooth socket is connected with the ground wire, the electrode 3 on the labial side is a cathode, and the electrode 4 on the lingual side is an anode. I.e., the sterilization effect near the lingual side is more remarkable.

Fig. 3 is another embodiment for implementing this function. The main control chip 5 controls the states of the two constant

current output devices

8a and 8 b. When the constant current output device 8a of the upper circuit is in an excited state, it starts outputting a constant current. At the moment, the constant current output device 8a is connected with the tongue side electrode 4, the lip side electrode 3 is connected with the ground wire of the lower path after passing through fixed impedance, and meanwhile, the rear end of the lower path constant current output device 8b is connected with a diode 10b, so that the constant current output device 8b is prevented from being damaged due to inverse load. So that a constant micro-current flows from the lingual side to the labial side at this time.

When the main control chip 5 sends a switching signal, the constant current output device 8a on the upper path is closed, and the constant current output device 8b on the lower path starts to output. The transient diode 9 in the upper circuit conducts the extra current generated during switching to ground. Meanwhile, the upper and lower current stabilizing diodes operate to stabilize the electric potentials on the lingual electrode 4 and the labial electrode 3 as soon as possible. At this time, the constant current output device 8b is connected to the lip side electrode 3, and the tongue side electrode 4 is connected to the ground line via the fixed impedance of the upper path. So that a constant micro-current flows from the labial side to the lingual side at this time.

The above circuit is a specific embodiment for a pair of lingual labial electrodes in a mouthpiece. In practice, there are multiple pairs of electrodes operating simultaneously, and in order to avoid current passing through the gum surface rather than entering the gum, two adjacent electrodes, which are both lingual or both labial, must be electrodes of the same polarity.

The invention provides a scheme that electrodes on the labial and lingual sides of the gum can be switched, and as laboratory data only has data that the current in one direction is continuously supplied for more than 10 minutes, namely, the continuous power supply in one direction exceeds 10 minutes to obviously find that bacteria are killed and the bacterial killing rate near the positive level is higher, in the design of the device, the current in the same direction is recommended to be continuously supplied for more than 10 minutes, namely, the switching frequency is not higher than 10 minutes/time. On the other hand, when the constant current output device continuously supplies power, instantaneous reverse current may occur by controlling the relay to switch the positive electrode and the negative electrode, and certain influence is generated on the service life of the device and the experience of a user. The preferred electrode switching frequency is once every 20 minutes, i.e. once per treatment session.

While embodiments of the invention have been disclosed above, it is not intended to be limited to the uses set forth in the specification and examples. It can be applied to all kinds of fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. Therefore, the invention is not to be limited to the specific details and illustrations shown and described herein, without departing from the general concept defined by the claims and their equivalents.

Claims

1. The micro-current oral cavity sterilizer with the adjustable current direction comprises a tooth socket, a lip side electrode and a tongue side electrode which are arranged on the tooth socket, and a power supply for supplying power to the lip side electrode and the tongue side electrode, and is characterized in that the power supply can intermittently switch the polarity.

2. The micro-current oral cavity sterilizer with adjustable current direction according to claim 1, wherein the power supply is a constant current source, and the output voltage of the power supply is adjusted according to the magnitude and direction of the current at the output end, so that the current at the output end is constant micro-current.

3. The micro-current oral cavity sterilizer with adjustable current direction according to claim 1, wherein the circuit connection between the output end of the power supply and the tooth socket electrode is switched by the signal control of the main control chip, thereby achieving the purpose of switching the current flow direction.

4. The micro-current oral cavity sterilizer with adjustable current direction according to claim 1, wherein a relay switch is arranged between the output end of the power supply and the tooth socket electrode, and the output end of the power supply is switched to be connected with the tooth socket electrode through the signal control of the main control chip, so as to achieve the purpose of switching the current flow direction.

5. The micro-current oral cavity sterilizer with adjustable current direction as claimed in claim 4, wherein a relay switch is mounted between the output terminal of the power supply and the mouthpiece electrode, the output terminal of the power supply is connected with the labial electrode when the relay switch is at the first position, and the lingual electrode is grounded; when the relay switch is at the second position, the power output end is connected with the tongue side electrode, and the lip side electrode is grounded.

6. The micro-current oral cavity sterilizer with adjustable current direction according to claim 3, wherein the main control chip controls two constant current output devices, when the constant current output device on the upper circuit is in an excited state, a constant current is output, the constant current output device is connected with the lingual electrode at the moment, and the labial electrode is connected with the ground wire after passing through fixed impedance; when the main control chip sends out a switching signal, the constant current output device on the upper path is closed, the constant current output device on the lower path is connected with the lip side electrode, and the tongue side electrode is connected with the ground wire after passing through fixed impedance.

7. The micro-current oral cavity sterilizer with adjustable current direction according to claim 6, wherein the rear end of the lower constant current output device is connected with a diode to prevent the constant current output device from being damaged by a reverse load.

8. The micro-current oral sterilizer with adjustable current direction according to claim 6, wherein the upper circuit is provided with a transient diode for guiding the extra current generated during switching to the ground wire, and the upper and lower circuits are provided with a current stabilizing diode for stabilizing the potentials on the lingual electrode and the labial electrode as soon as possible.

9. The micro-current oral sterilizer of claim 1, wherein the switching frequency of the power supply is not higher than 10 minutes/time.

10. The micro-current oral cavity sterilizer with adjustable current direction according to claim 1, wherein the micro-current of the power supply can be 50 to 500 micro-amperes.