CN116019590A - Optical power constant current source control device and method for oral cavity treatment - Google Patents

Abstract

The invention discloses a system method and a device for supplying and adjusting an optical power constant current source for oral sterilization and anti-inflammation. The device comprises a charger, a shell, a constant current source circuit, a control chip, an LED working light source and three light guide heads with different specifications and purposes. The constant current source circuit, the control chip and the LED working light source are packaged inside the shell. Experiments prove that the device provided by the invention has a 99% killing effect on main teeth and oral pathogenic bacteria such as Porphyromonas gingivalis, hashimoto globosus and the like, and has a high practical value on a series of treatment processes in the oral cavity, which need sterilization and anti-inflammation. Three different light guide heads in the invention can respectively correspond to the treatment of dental pulp and root canal, periodontal and decayed tooth, periapicalitis and peri-implantitis corresponding focus; the illumination power of the LED can be automatically adjusted to the light power of the corresponding gear through the replaced different light guide heads, so that the complicated operation of manually adjusting the light power is simplified.

Description

Optical power constant current source control device and method for oral cavity treatment

Technical Field

The invention relates to an optical power constant current source control device and method for oral cavity treatment, belonging to the field of clinical treatment equipment and control technology for oral cavity anti-inflammation and sterilization.

Background

Currently, periodontal disease is most initiated by excessive attachment of dental plaque, and when oral bacteria are excessive, their secretions can damage the enamel, forming dental plaque. At the same time, the extracellular polymeric matrix of the plaque biofilm acts as a barrier, thereby preventing the penetration of the antimicrobial agent into the biofilm to kill microorganisms and further destroy the biofilm, resulting in reduced chemotherapeutic effects of the antimicrobial agent and the like. The main cases and defects are as follows:

(1) Caries is commonly known as decayed teeth, and is one of the most common dental lesions:

as a bacterial disease, common pathogenic bacteria are Acinetobacter actinomyces, porphyromonas gingivalis, fusarium, and Treponema denticola. Severe caries can be secondary to periodontitis, if not treated in time, lesions continue to develop, forming cavities, and eventually complete destruction of the crown. Untreated cavities are not self-healing, with the end result of development being loss of teeth. The clinical caries-eliminating mode includes basic treatment of cleaning, scraping, subgingival debridement and the like, and then antibiotic medicines are used for diminishing inflammation, and the mode has the defects that: the antibiotic treatment can be carried out only by injecting or inhaling the medicine through the whole body for a period of time, so that the antibiotic treatment has no targeting effect and has quite poor sterilization effect on periodontitis caused by deep caries;

(2) Periodontitis and periapical periodontitis:

periodontitis is a chronic inflammation of periodontal support caused mainly by local factors. The most common cause is that bacterial plaque attached to the tooth surface cannot be cleaned in time, and the bacterial disease is common pathogenic bacteria such as porphyromonas gingivalis. Periodontal inflammation which is not treated in time can cause symptoms such as periodontal pocket formation, tooth Zhou Yinong, tooth loosening and the like;

acute or chronic inflammation of the root canal is called periapical periodontitis, and bacterial infection of the root canal and the like may cause periapical periodontitis. As a bacterial disease, there are enterococcus faecalis and the like as common pathogenic bacteria. The detection rate of enterococcus faecalis in the reinfected root canal is 24-77%, and detection and removal of enterococcus faecalis in the reinfected root canal are beneficial to improving the success rate of root canal reinfection. The periapical periodontitis which is not treated in time can cause acute periapical abscess, persistent jumping pain and the like, and the serious situation needs tooth extraction;

periodontitis and periapical periodontitis are treated by relieving symptoms and terminating the pathological process, and the basic process can be divided into two steps: firstly, incising, draining and decompressing abscess at a focus to eliminate jumping pain; then, the focus part needs to be sterilized and washed to prevent the further development of the disease. The current method of clinical treatment of periodontal and periapical inflammatory conditions is supragingival or subgingival scaling, rinsing the periodontal pocket with a drug and administering an appropriate amount of antibiotics to aid in the subsequent treatment. For those with serious illness, the gum is considered to be opened, and the focus part is exposed for washing and scraping treatment; when loosening of teeth occurs, removal of diseased teeth is a consideration. The technical defects are concentrated in: the debridement and anti-inflammation method needs to inject or inhale the medicine for a period of time to diminish inflammation, does not play a targeting role, and has a longer treatment period.

Disclosure of Invention

The invention aims to solve the problems and aims to provide an optical power constant current source control device and an optical power constant current source control method for oral treatment.

The invention introduces photodynamic therapy (PDT), and utilizes light, photosensitizer and oxygen to jointly participate in reaction to generate strong oxidative singlet oxygen to kill pathogenic microorganisms aiming at focus so as to achieve the effect of sterilizing periodontitis or periapical periodontitis. Meanwhile, the invention considers the simplicity, and for different symptoms, only the replaceable parts are needed to be replaced, and other operations are not needed. The innovation is that: the system can realize different optical power conversion by only replacing different light guide heads, greatly simplifies the operation and avoids secondary damage of the oral cavity caused by the intervention of appliance scraping and anti-inflammatory drug factors in anti-inflammatory treatment.

The power system for diminishing inflammation and sterilizing the oral cavity has the technical characteristics and advantages that: by adding the rotatable power attenuation sheet, different replacement heads can rotate the attenuation sheet to different corresponding positions, so that the effective control of the optical power is realized, and the convenience requirement that the optical guide head can be reused only by replacing the optical guide head is met.

The invention has the beneficial effects that (1) photodynamic therapy is introduced to treat the diseases in the oral cavity, and the defects of the prior clinical technology are overcome; (2) The rapid switching of the method and the device for treating periodontitis, root canal inflammation, peri-implant inflammation and dental root periapical periodontitis is realized without losing convenience; (3) By simplifying the operation, the probability of secondary injury caused by artificial factors in treatment is reduced, and the method is beneficial to patients.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that are used in the description of the embodiments or exemplary techniques will be briefly described below.

Fig. 1 is a general view of the present device.

Fig. 2 shows the connector tail.

Fig. 3a is a schematic view of the needle structure of tooth Zhou Daoguang;

FIG. 3b is a schematic view of a root canal light guide needle;

fig. 3c is a schematic view of a blunt flat conducting head.

Fig. 4a is a rear view of the needle of tooth Zhou Daoguang;

FIG. 4b is a rear view of the root canal light guide needle;

fig. 4c is a rear view of a blunt flat conducting head.

Fig. 5 is an exploded assembly view of the device as a whole.

FIG. 6a is a schematic view of an attenuation sheet;

FIG. 6b is a schematic diagram of the attenuation pad fully closed;

FIG. 6c is a schematic view of the attenuator fully open;

fig. 6d is a schematic view of the attenuation pad partially open.

Fig. 7 is a schematic of plaque treatment.

Fig. 8 is a schematic view of caries treatment.

Fig. 9 is a schematic of treatment of apicitis.

FIG. 10 is a power driving circuit diagram of the device

Fig. 11 is a circuit diagram of the constant current source of the device.

Detailed Description

The objects, technical solutions and advantages of the present invention will become more apparent by the following detailed description of the present invention with reference to fig. 1 to 11 in conjunction with the detailed description. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention; in addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other. The invention will be described in more detail below with reference to the accompanying drawings. Like elements are denoted by like reference numerals throughout the various figures. For clarity, the various features of the drawings are not drawn to scale.

The LED power supply device comprises a charging base 1, a plastic shell 2, a constant current source circuit 3, a control chip 4, an LED working light source 5, a light guide head 6, a control circuit 7 and a power attenuation sheet 8;

the constant current source circuit 3, the control chip 4 and the control circuit 7 are packaged in the plastic shell 2;

the plastic housing 2 hand piece is also provided with a control area 24 comprising a work switch 241, a treatment time selection key 242, and a light source wavelength selection key 243; the control area 24 is electrically connected with the control chip 4;

the top of the plastic shell 2 is provided with a concave connector 21, and the LED light source 5 is arranged in the center of the connector 21 and is electrically connected with the working switch 241, the light source wavelength selection key 243 and the control chip 4;

the front end of the LED light source 5 is also fixedly provided with a power attenuation sheet 8; the power attenuation sheet 8 is of a double-layer structure and comprises an inner-layer fixing sheet 81 and an outer-layer rotating sheet 82 which are coaxially arranged, wherein the inner-layer fixing sheet 81 and the outer-layer rotating sheet 82 are formed by six fan-shaped blades of 30 degrees which are mutually separated by a 30-degree rotating array;

the inner layer fixing piece 81 is fixed at the front end of the LED light source 5, the outer layer rotating piece 82 rotates 0 to 30 degrees around the center of the inner layer fixing piece 81, and three different types of shading areas which are completely shaded, partially shaded and minimally shaded are formed for the LED light source 5 together with the inner layer fixing piece 81, so that three different output power states are formed, and the regulation and control of the light power are realized;

the light guide head 6 is composed of three types of specifications and purposes, namely a short tooth Zhou Daoguang needle 61, a long root canal light guide needle 62 and a blunt flat light guide head 63;

wherein the light power of the needle 61 of the tooth Zhou Daoguang is 60mW to 85 mW, and the power attenuation sheet 8 is partially shielded; the optical power of the root canal light guide needle 62 is about 40mW to 50 mW, and the power attenuation sheet 8 is completely shielded; the optical power of the blunt flat light guide head 63 is 160mW to 220 mW, and the power attenuation sheet 8 is the minimum shielding;

the light guide head 6 is fixedly arranged on the connector 21.

A tooth Zhou Daoguang needle 61 for superficial treatment such as periodontitis and dental plaque irradiation; the root canal light guide needle 62 is used for irradiation operations requiring accurate treatment such as dental pulp root canal; the blunt guide head 63 is used for operations requiring a wide range of irradiation sterilization and anti-inflammation such as peri-dental inflammation and the like.

The edge of the concave connector 21 is an arc, at least two clamping grooves 211 are designed on the arc, and the light guide head 6 is in mortise and tenon connection with the clamping grooves 211 through corresponding convex mounting heads 611 in interference fit.

The rated output light power of the constant current source circuit 3 is 500 mW to 700mW, the LED working light source 5 is a red-blue variable light source, and the value range of the red light wavelength is 630 nm to 650 nm; the blue wavelength ranges from 430 nm to 450 nm.

The control chip 4 also comprises a current control chip 42 for detecting the current in the circuit, and when the current is overlarge, the current is fed back to the control chip 4 to control the switch to be disconnected, so as to cut off the power supply circuit. Thereby avoiding overlarge service life loss of the battery and prolonging the service life of equipment.

The control chip 4 also comprises a temperature control chip 41 and an indicator lamp, wherein the temperature control chip 41 and the indicator lamp are linked through a switch, and the indicator lamp is powered on to start working; when the temperature of the temperature control chip 41 is higher than 80 ℃, the temperature is fed back to the control chip 4 to control the switch to be turned off, and the power supply circuit is cut off; when the temperature of the temperature control chip 41 is monitored to be reduced to 40 ℃, the temperature control chip is fed back to the control chip 4 to control the switch to be closed, the power supply of the circuit is recovered, the indicator lamp flashes, and the continuous use is prompted.

The material of the light guide head 6 is bisphenol A type carbonic ester. Wherein the short tooth Zhou Daoguang needle 61 is used for superficial treatment such as periodontitis and dental plaque irradiation; the long root canal light guide needle 62 is used for the irradiation operation of dental pulp root canal and the like which need accurate treatment; the blunt and flat light guide head 63 is used for operations requiring a large-scale irradiation for sterilization and anti-inflammation such as peri-dental periapical periodontitis.

The invention comprises the following oral treatment steps and principles:

step 1, under an aerobic environment, the used toluidine blue O photosensitizer can be attached to bacteria, and the photosensitizer is in a singlet state at the moment;

step 2, after being irradiated by an external light source, the photosensitizer is stimulated to transition to an excited singlet state, and then rapidly intersystem crossing to an excited triplet state;

step 3, the photosensitizer triplet state directly collides with tissue oxygen, energy is released and returns to a singlet state, and the released energy is absorbed by the tissue oxygen to generate singlet active oxygen;

and 4, rapidly oxidizing the bacteria by the active oxygen, wherein the metabolism of the bacteria is influenced and the bacteria die rapidly, so that the sterilizing and anti-inflammatory effects are realized.

An optical power constant current source control method for oral treatment comprises the following steps:

method one, sterilization procedure for periodontitis, plaque and caries:

s1.1, flushing an operation space, and then sucking water in an oral cavity as much as possible by using biological cotton;

s1.2, mounting a light guide head 6 as a short tooth Zhou Daoguang needle 61, pressing a working switch 241 on a plastic shell 2 for one second for a long time, alternately flashing red and blue of an indicator lamp, then pressing a light source wavelength selection button 243 to select a light source, and for superficial anti-inflammation and dental plaque, using red light, observing that the indicator lamp turns red and normally lighting to indicate that the system is ready;

s1.3, smearing a photosensitizer toluidine blue O, TBO for short, on the periodontal surface, enabling a periodontal light guide head 6 to extend into the oral cavity, then pressing a working switch 241 again, starting the system to work, wherein the single irradiation time is 30 seconds, rotating and irradiating around the focus of the teeth in the process, and cleaning the photosensitizer in the oral cavity with normal saline after cleaning is finished until no color is attached;

s1.4, after 30 seconds, the sterilization process is finished, the light source is normally turned off, the device is taken out of the oral cavity, and after the working switch 241 on the shell is pressed for one second, the device stops supplying power;

method two, sterilization operation in dental pulp and root canal:

s2.1, flushing an operation space, and then sucking water in the oral cavity as much as possible by using biological cotton;

s2.2, replacing the light guide head 6 with a long root canal light guide needle 62, pressing a working switch 241 on the plastic shell 2 for one second for the long time, alternately flashing the indicator lights red and blue, then pressing a light source wavelength selection button 243 to select a light source, and for normal root canal filling and cleaning, if a patient does not have special conditions such as focus, the focus is directly irradiated by blue light, the use of the blue light is not required, the blue light is not required to be matched with toluidine blue O, and the indicator lights are observed to be blue and normally bright to indicate that the system is ready;

s2.3, injecting a photosensitizer toluidine blue O into a root canal by using a needle tube, for deeper root canals, pumping out liquid bubbles by using a root canal oscillation washer after injection is finished, then extending a root canal light guide head 6 into an oral cavity to aim at the root canal of the tooth, pressing a working switch 241 again, starting the system to work, wherein the single irradiation time is 60 seconds, the focus irradiation is needed to be carried out on an inflammation position in the process, and after cleaning is finished, the root canal is needed to be cleaned by using normal saline until no color is attached;

s2.4, after 60 seconds, the sterilization process is finished, the light source is normally turned off, the device is taken out of the oral cavity, and after the working switch 241 on the shell is pressed for one second, the device stops supplying power;

and thirdly, sterilization operation for peri-implant inflammation:

s3.1, sucking pus and flushing focus areas with normal saline;

s3.2, replacing the light guide head 6 with a blunt light guide head 63, alternately flashing red and blue of an indicator lamp after long-time pressing of a working switch 241 on the plastic shell 2, then pressing a light source wavelength selection button 243 to select a light source, irradiating a focus by red light for peri-implant inflammation, smearing a photosensitizer toluidine blue O on the peri-implant inflammation focus position, injecting the photosensitizer toluidine blue O into the gingival surface by an injector, extending the light guide head 6 into the oral cavity to aim at the peri-implant inflammation focus, then pressing the working switch 24 again, wherein the single irradiation time is 90 seconds, the focus position needs to be mainly irradiated in the process, and after cleaning is finished, cleaning the photosensitizer in the oral cavity by using normal saline until no color is attached;

s3.3, after 90 seconds, the sterilization process is finished, the light source is normally turned off, the device is taken out of the oral cavity, and after a working switch 241 key on the shell is pressed for 1 second, the device stops supplying power;

the sterilization operation of the periapical periodontitis of the tooth:

s4.1, positioning a focus, sucking pus and flushing a focus area with normal saline;

s4.2, mounting the light guide head 6 as a blunt light guide head 63, pressing a working switch 241 on the plastic shell 2 for one second, alternately flashing red and blue of an indicator lamp, then pressing a light source wavelength selection key 243 to select a light source, for periapical periodontitis of tooth root, using red light to irradiate a focus, smearing a photosensitizer toluidine blue O on the focus position on the surface of gum, extending the light guide head 6 into the oral cavity to aim at a peridental focus, then pressing the working switch 241 again, starting the system, wherein the single irradiation time is 90 seconds, the focus irradiation is needed to be carried out on the position of the cut, and after cleaning is finished, physiological saline is needed to clean the photosensitizer in the oral cavity until no color is attached;

and S4.3, after 90 seconds, the sterilization process is finished, the light source is normally turned off, the device is taken out of the oral cavity, and after the working switch 241 key on the shell is pressed for 1 second, the device stops supplying power.

In particular, the lamp bead energizing timer begins to work, the working temperature of the device is not higher than 80 ℃, and once the temperature is too high, the thermosensitive chip controls the switch to be turned off. And (3) radiating and cooling are started, and after the temperature is reduced to 40 ℃, an indicator light on the device flashes to prompt that the device can be used continuously.

(in particular, when a patient suffers from oral fibrosis, further irritation of the oral mucosa should be avoided, all of the above operations are performed with red light.)

The relation between the output power P of the light guide head 6 and the efficiency E for killing pathogenic bacteria such as Porphyromonas gingivalis is:

；

the relation between the output power P of the light guide head (6) and the efficiency E for killing the coccidian is as follows:

。

to verify the utility of the present invention, the following examples are presented:

embodiment one:

in the clinical treatment of dental plaque, teeth are rinsed first and moisture is absorbed by bio-cotton, and then the photosensitizer Toluidine Blue O (TBO) is applied to the tooth surface. The device of the invention is taken out from the charger 1, a short tooth Zhou Daoguang needle 61 is arranged, and the device is started by long-pressing a key 241 of a working switch on the shell 2 for 3 seconds. Pressing a light source wavelength selection button 243 on the shell 2, displaying red color when an indicator lamp above shows that the wavelength of the selected light beam is 630 nm red light, pressing a treatment time selection button 25 on the shell 2, enabling the root canal light guide needle 6 to be close to a focus, pressing a working switch 24 button to start a light source for photodynamic sterilization, completing the sterilization process after 30 s, automatically closing the light source, taking the device out of an oral cavity, and closing the device after long-pressing the working switch 24 button on the shell 2 for 3 seconds.

Embodiment two:

in clinical treatment of root canal, teeth were first rinsed and moisture was blotted with bio-cotton followed by injection of Toluidine Blue O (TBO) into the root canal. The device is taken out from the charger 1, an elongated root canal light guide needle 62 is arranged, and the device is started by pressing a key 241 of a working switch on the shell 2 for 3 seconds. Pressing a light source wavelength selection button 243 on the shell 2, displaying blue light when an indicator lamp above shows that the wavelength of the selected light beam is 430 nm blue light, pressing a treatment time selection button 242 on the shell 2, enabling the root canal light guide needle 62 to be close to a focus, pressing a working switch 241 button to start a light source for photodynamic sterilization, completing the sterilization process after 60 seconds, automatically closing the light source, taking the device out of an oral cavity, and closing the device after long pressing the working switch 241 button on the shell 2 for 3 seconds.

Embodiment III:

when treating periapical periodontitis in clinic, firstly, draining and flushing a focus part, sucking blood and pus, and then injecting Toluidine Blue O (TBO) into the focus part of gum; the device of the invention is removed from the charger 1, and then a disposable blunt flat conducting head 63 is removed, mounted on the head of the device, and the device is started by pressing the operating switch 241 button on the housing 2 for 3 seconds. Pressing a light source wavelength selection button 243 on the shell 2, displaying blue light by an indicator lamp above, indicating that the wavelength of the selected light beam is 430 nm blue light, enabling the blunt flat light guide optical head 3 to be close to a focus, pressing a key of a working switch 241 to start a light source for photodynamic sterilization, completing the sterilization process after 90 s, automatically closing the light source, taking the device out of an oral cavity, closing the device after long-pressing the key of the working switch 241 on the shell 2 for 3 seconds, and finally flushing and sterilizing and closing the incision.

Embodiment four:

in clinic, when treating periodontitis, firstly, washing is carried out, blood and pus are sucked out, and then Toluidine Blue O (TBO) is injected into focus; the device of the invention is taken out from the charger 1, then a disposable blunt flat light guide optical head is taken out, the device is arranged on the head of the device, and the device is started by long-pressing a key 241 of a working switch on the shell 2 for 3 seconds. Pressing a light source wavelength selection button 243 on the shell 2, displaying blue light when an indicator lamp above shows that the wavelength of the selected light beam is 430 nm blue light, pressing a treatment time selection button 242 on the shell 2, enabling the blunt flat light guide head 63 to be close to a focus, pressing a working switch 241 button to start a light source for photodynamic sterilization, completing the sterilization process after 90 s, automatically closing the light source, taking the device out of an oral cavity, and closing the device after long pressing the working switch 241 button on the shell 2 for 3 seconds.

Fifth embodiment:

for normal root canal filling and cleaning, if the patient does not have special conditions such as focus, the focus is directly irradiated by blue light, and the blue light does not need to be matched with Toluidine Blue O (TBO), so that the indicator light turns blue and the system is ready to be indicated by normal brightness. The light source wavelength selection button 243 on the shell 2 is actuated, the indicator lamp above shows blue, the wavelength of the selected light beam is 430 nm blue, the treatment time selection button 242 on the shell 2 is pressed, the blunt flat light guide optical head 3 is close to a focus, the working switch 241 button is pressed to start the light source for photodynamic sterilization, the sterilization process is completed after 90 seconds, the light source is automatically closed, the device is taken out from the oral cavity, and the device is closed after the working switch 241 button on the shell 2 is pressed for 1 second.

Example six:

the device is used for carrying out photodynamic sterilization experiments on porphyromonas gingivalis and enterococcus faecalis by matching with a photosensitizer toluidine blue O, 630 nm red light beams and 430 nm blue light beams are selected, the illumination working time is 30 seconds, and the experimental result shows that the sterilization effect of the tail end part of the system is obvious, and the sterilization efficiency can reach 99%.

It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Claims (9)

1. A light power constant current source controlling means for oral cavity treatment, its characterized in that:

the LED power supply device comprises a charging base (1), a plastic shell (2), a constant current source circuit (3), a control chip (4), an LED working light source (5), a light guide head (6), a control circuit (7) and a power attenuation sheet (8);

the constant current source circuit (3), the control chip (4) and the control circuit (7) are packaged in the plastic shell (2);

the plastic shell (2) handheld section is also provided with a control area (24) comprising a working switch (241), a treatment time selection key (242) and a light source wavelength selection key (243); the control area (24) is electrically connected with the control chip (4);

the top of the plastic shell (2) is provided with a concave connector (21), and the LED light source (5) is arranged in the center of the connector (21) and is electrically connected with the working switch (241), the light source wavelength selection key (243) and the control chip (4);

the front end of the LED light source (5) is fixedly provided with a power attenuation sheet (8); the power attenuation sheet (8) is of a double-layer structure and comprises an inner-layer fixing sheet (81) and an outer-layer rotating sheet (82) which are coaxially arranged, wherein the inner-layer fixing sheet (81) and the outer-layer rotating sheet (82) are formed by six fan-shaped blades of 30 degrees which are mutually separated by a 30-degree rotating array;

the inner layer fixing piece (81) is fixed at the front end of the LED light source (5), the outer layer rotating piece (82) rotates 0-30 degrees around the center of the inner layer fixing piece (81), three different types of shading areas which are completely shaded, partially shaded and minimally shaded are formed for the LED light source (5) together with the inner layer fixing piece (81), and three different output power states are formed, so that the regulation and control of the light power are realized;

the light guide head (6) is composed of three types of specifications and purposes, namely a short tooth Zhou Daoguang needle head (61), a long root canal light guide needle head (62) and a blunt flat light guide head (63);

wherein the light power of the needle (61) of the tooth Zhou Daoguang is 60mW to 85 mW, and the power attenuation sheet (8) is partially shielded; the optical power of the root canal light guide needle head (62) is about 40mW to 50 mW, and the power attenuation sheet (8) is completely shielded; the optical power of the blunt flat light guide head (63) is 160mW to 220 mW, and the power attenuation sheet (8) is the minimum shielding;

the light guide head (6) is fixedly arranged on the connector (21).

2. The optical power constant current source control device for oral treatment according to claim 1, wherein: the edge of the concave connector (21) is an arc, at least two clamping grooves (211) are formed in the arc, and the light guide head (6) is in mortise and tenon connection with the clamping grooves (211) through corresponding convex mounting heads (611) in interference fit.

3. The optical power constant current source control device for oral treatment according to claim 1, wherein: the rated output light power of the constant current source circuit (3) is 500 mW to 700mW, the LED working light source (5) is a red-blue variable light source, and the range of the red light wavelength is 630 nm to 650 nm; the blue wavelength ranges from 430 nm to 450 nm.

4. The optical power constant current source control device for oral treatment according to claim 1, wherein: the control chip (4) also comprises a current control chip (42) for detecting the current in the circuit, and when the current is overlarge, the current is fed back to the control chip (4) to control the switch to be disconnected, so that the power supply circuit is cut off.

5. The optical power constant current source control device for oral treatment according to claim 1, wherein:

the control chip (4) also comprises a temperature control chip (41) and an indicator lamp, and the temperature control chip (41) and the indicator lamp are linked through a switch; when the temperature monitored by the temperature control chip (41) is higher than 80 ℃, the temperature is fed back to the control chip (4) to control the switch to be disconnected, and the power supply circuit is cut off; after the temperature of the temperature control chip (41) is monitored to be reduced to 40 ℃, the temperature control chip (4) is fed back to control the switch to be closed, the power supply of the circuit is recovered, the indicator lamp flashes, and the continuous use is prompted.

6. The optical power constant current source control device for oral treatment according to claim 1, wherein:

the material of the light guide head (6) is bisphenol A type carbonic ester.

7. A control method of an optical power constant current source for oral treatment is characterized in that:

step 1, under an aerobic environment, the used toluidine blue O photosensitizer can be attached to bacteria, and the photosensitizer is in a singlet state at the moment;

step 2, after being irradiated by an external light source, the photosensitizer is stimulated to transition to an excited singlet state, and then rapidly intersystem crossing to an excited triplet state;

step 3, the photosensitizer triplet state directly collides with tissue oxygen, energy is released and returns to a singlet state, and the released energy is absorbed by the tissue oxygen to generate singlet active oxygen;

and 4, rapidly oxidizing the bacteria by the active oxygen, wherein the metabolism of the bacteria is influenced and the bacteria die rapidly, so that the sterilizing and anti-inflammatory effects are realized.

8. The method for controlling an optical power constant current source for oral treatment according to claim 7,

the method is characterized by comprising the following steps:

method one, sterilization procedure for periodontitis, plaque and caries:

s1.1, flushing an operation space, and then sucking water in an oral cavity as much as possible by using biological cotton;

s1.2, mounting a light guide head (6) as a short tooth Zhou Daoguang needle head (61), pressing a working switch (241) on a plastic shell (2) for one second, alternately flashing red and blue of an indicator lamp, then pressing a light source wavelength selection key (243) to select a light source, and for superficial anti-inflammation and dental plaque, using red light, observing that the indicator lamp turns red and normally lighting to indicate that the system is ready;

s1.3, smearing a photosensitizer toluidine blue O, TBO for short, on the periodontal surface, extending a periodontal light guide head (6) into the oral cavity, then pressing a working switch (241) again, starting the system to work, wherein the single irradiation time is 30 seconds, rotating and irradiating around the focus of teeth in the process, and cleaning the photosensitizer in the oral cavity with normal saline after cleaning is finished until no color is attached;

s1.4, after 30 seconds, the sterilization process is finished, the light source is normally turned off, the device is taken out of the oral cavity, and after a working switch (241) on the shell is pressed for one second, the device stops supplying power;

method two, sterilization operation in dental pulp and root canal:

s2.1, flushing an operation space, and then sucking water in the oral cavity as much as possible by using biological cotton;

s2.2, replacing the light guide head (6) with a long root canal light guide needle (62), pressing a working switch (241) on the plastic shell (2) for one second, alternately flashing red and blue to indicate lamps, then pressing a light source wavelength selection key (243) to select a light source, and for normal root canal filling and cleaning, if a patient does not have special conditions such as focus, the focus is directly irradiated by blue light, the use of the blue light is not required, the blue light is not required to be matched with toluidine blue O, and the indication lamps are observed to turn blue and normally bright to indicate that the system is ready;

s2.3, injecting a photosensitizer toluidine blue O into a root canal by using a needle tube, for deeper root canals, pumping out liquid bubbles by using a root canal swabbing device after injection is finished, then stretching a root canal guide head (6) into an oral cavity to aim at the root canal of the tooth, pressing a working switch (241) again, starting the system to work, wherein the single irradiation time is 60 seconds, the process needs to pay attention to focus on an inflammation position, and after cleaning is finished, the root canal needs to be cleaned by using normal saline until no color is attached;

s2.4, finishing the sterilization process after 60 seconds, normally turning off the light source, taking the device out of the oral cavity, and stopping power supply of the device after long-time pressing of a key of a working switch (241) on the shell for one second;

and thirdly, sterilization operation for peri-implant inflammation:

s3.1, sucking pus and flushing focus areas with normal saline;

s3.2, replacing the light guide head (6) with a blunt flat light guide head (63), pressing a working switch (241) on the plastic shell (2) for one second, alternately flashing an indicator lamp red and blue, then pressing a light source wavelength selection key (243) to select a light source, irradiating a focus by using red light for peri-implant inflammation, smearing a photosensitizer toluidine blue O on the peri-implant inflammation focus position, injecting the photosensitizer toluidine blue O into the gingival surface by using an injector, extending the light guide head (6) into the oral cavity to aim at the peri-implant inflammation focus, then pressing the working switch (24) again, wherein the single irradiation time is 90 seconds, focusing irradiation is needed to be carried out on the focus position in the process, and after cleaning is finished, cleaning the intra-oral photosensitizer with normal saline until no color is attached;

s3.3, finishing the sterilization process after 90 seconds, normally turning off the light source, taking the device out of the oral cavity, and stopping power supply of the device after long-time pressing of a key of a working switch (241) on the shell for 1 second;

the sterilization operation of the periapical periodontitis of the tooth:

s4.1, positioning a focus, sucking pus and flushing a focus area with normal saline;

s4.2, mounting the light guide head (6) as a blunt flat light guide head (63), alternately flashing red and blue of an indicator lamp after a long time pressing a working switch (241) on the plastic shell (2), then pressing a light source wavelength selection key (243) to select a light source, irradiating focus on peridental periapical periodontitis by using red light, smearing a photosensitizer toluidine blue O on the focus position on the surface of gingiva, extending the light guide head (6) into the oral cavity, aiming at the peridental focus, then pressing the working switch (241) again, starting the system to work, wherein the single irradiation time is 90 seconds, paying attention to focus irradiation on the position of the incision in the process, and cleaning the photosensitizer in the oral cavity by using normal saline until no color is attached;

and S4.3, after 90 seconds, the sterilization process is finished, the light source is normally turned off, the device is taken out of the oral cavity, and after a working switch (241) key on the shell is pressed for 1 second, the device stops supplying power.

9. The method for controlling an optical power constant current source for oral treatment according to claim 8, wherein:

the relation between the output power P of the light guide head (6) and the efficiency E for killing pathogenic bacteria such as porphyromonas gingivalis is as follows:

；

the relation between the output power P of the light guide head (6) and the efficiency E for killing the coccidian is as follows:

。

Images