CN205055217U - Light power oral cavity periodontitis therapeutic instrument - Google Patents

Abstract

A photodynamic oral periodontitis treatment instrument belongs to the technical field of oral treatment equipment. It includes the shell and the power supply, MCU, driver, light source and optical system arranged in the shell, among which: the power supply is connected with the MCU and the driver circuit, and provides power, the MCU is connected with the driver circuit, the driver is connected with the light source circuit, and the MCU controls the work of the driver , the driver controls the lighting time and luminous intensity of the light source, the light source is connected to the optical system, and the light is emitted through the optical system after the light source emits light. The utility model adopts the oral periodontitis treatment instrument obtained by the above-mentioned technology, outputs PWM waves through the MCU, controls the lighting time and luminous intensity of the driver to light the light source, and can realize the functions of adjusting light intensity and adjusting timing for different cases. The data can be displayed in real time, and the operation is convenient; the light attenuation of the treatment light source can be better controlled through the radiator.

Description

A photodynamic oral periodontitis treatment instrument

technical field

The utility model belongs to the technical field of oral cavity treatment equipment, and in particular relates to a photodynamic oral periodontitis treatment instrument which uses the principle of photodynamics to kill pathogenic bacteria in the oral cavity.

Background technique

Mechanical scaling combined with antibiotic sterilization is the traditional means of periodontal treatment, but frequent use of antibiotics will lead to the increase of bacterial resistance and reduce the efficacy of treatment. In recent years, the dental profession has begun to seek other sterilization methods. Photodynamic therapy refers to the photochemical reaction of photosensitizer (Photosensitizer, PS) absorbed by tissue through the irradiation of light of specific wavelength. The basic principle is: the photosensitizer crosses from the ground state to the triplet state through the singlet state system with a very short lifetime under the irradiation of a suitable light source. The triplet photosensitizer excited by light can undergo two types of reactions: (1) through hydrogen atom or electron transfer, directly react with the substrate or solvent to form free radicals, which is Type I (Type I) reaction; (2) energy transfer to oxygen molecules to form singlet oxygen ¹ O ₂ , which is Type II reaction. These singlet oxygen ¹ O ₂ can oxidize with adjacent biomacromolecules, resulting in strong cytotoxicity, which in turn leads to cell damage and even death.

The effect of photodynamic therapy is mainly related to three factors: light intensity, light time and photosensitizer concentration. The combination of light intensity and exposure time is called light dose. Numerous studies have shown that the sterilization effects of different light doses are significantly different. At present, most of the existing photodynamic therapy devices for periodontitis use lasers as light sources, and most of them can only be treated with a single light dose, and the lasers are large in size and not convenient enough for clinical use. In actual treatment, some patients with relatively mild symptoms only need a small light dose, and excessive light dose will cause damage to normal periodontal cells; while some patients with severe symptoms need more light dose than normal to achieve more good curative effect. For the above-mentioned shortcomings, there is an urgent need for a new type of therapeutic device that is practical, easy to operate, and small in size on the market.

Utility model content

Aiming at the above-mentioned problems in the prior art, the purpose of this utility model is to provide a photodynamic oral periodontitis treatment instrument, which can be used in conjunction with a photosensitizer to realize functions such as light intensity adjustment and timing adjustment of the light source. The photodynamic principle is used to kill the pathogenic bacteria in the oral cavity and complete the treatment of periodontitis.

Described a kind of photodynamic oral cavity periodontitis treatment instrument, comprises casing and the power supply that is arranged in casing, MCU, driver, light source and optical system, it is characterized in that described power supply is connected with MCU, driver circuit, provides power supply, MCU It is connected to the driver circuit, the driver is connected to the light source circuit, the MCU controls the driver to work, the driver controls the lighting time and intensity of the light source, the light source is connected to the optical system, and the light is emitted through the optical system after the light source emits light.

The photodynamic therapeutic apparatus for oral periodontitis is characterized in that the housing is also provided with a radiator, the radiator is located on one side of the light source, and the air outlet of the radiator is located on the outside of the housing, and the heat emitted by the light source passes through the radiator. shed.

The photodynamic treatment instrument for oral periodontitis is characterized in that a liquid crystal display connected to the MCU is provided outside the housing for displaying information on the MCU.

The photodynamic therapeutic apparatus for oral periodontitis is characterized in that a button connected to the MCU is arranged on the outer side of the housing, and the button is used to control the duty ratio and output time of the PWM wave output by the MCU.

The above-mentioned photodynamic oral periodontitis treatment instrument includes a casing and a power supply, an MCU, a driver, a light source and an optical system arranged in the casing, the power supply is connected to the MCU and the driver circuit to provide power, the MCU is connected to the driver circuit, and the driver It is connected with the light source circuit, and the MCU controls the driver to work. The driver controls the lighting time and intensity of the light source. The light source is connected to the optical system. After the light source emits light, it emits light through the optical system. The utility model adopts the oral periodontitis treatment instrument obtained by the above-mentioned technology, and controls the lighting time and light intensity of the driver to light the light source through the MCU output PWM wave, and can realize the functions of adjusting the light intensity and timing for different cases, and the data can be adjusted during operation. Real-time display and convenient operation; the light decay of the treatment light source can be better controlled through the radiator. Its novel shape, convenient operation and small size are suitable for popularization and application.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is the usage schematic diagram of the utility model.

In the figure: 1-housing, 2-MCU, 3-driver, 4-light source, 5-optical system, 6-LCD display, 7-button, 8-radiator, 9-power supply.

detailed description

The utility model is further described below in conjunction with the accompanying drawings of the description, but the protection scope of the utility model is not limited thereto:

As shown in Figure 1, a kind of photodynamic oral cavity periodontitis treatment instrument of the present utility model comprises shell 1, MCU2, driver 3, light source 4, optical system 5, liquid crystal display screen 6, button 7 in described shell 1 , the radiator 8 and the power supply 9, the radiator 8 is located at the side of the light source 4, and the air outlet of the radiator 8 is located at the outside of the shell 1, the MCU2 is supplied with 5V direct current by the power supply 9, and the driver 3 is supplied with 12V direct current by the power supply 9, MCU2 Set the MCU2 internal timer to control the PWM signal output time by button 7, adjust the duty cycle of the PWM wave to adjust the output current of the driver 3, control the driver 3 to output a constant current within a certain range, and the electrical signal output by the driver 3 controls The light intensity of the light source 4 and the time of lighting are used to produce the light dose required for the treatment. The light emitted by the light source 4 passes through the optical system 5 and directly irradiates the patient. The liquid crystal display screen 6 is driven by the MCU2 , can display all the setting information of the device, and the heat sink 8 dissipates the heat generated by the light source 4, which can effectively reduce the light decay of the light source 4 in a short time and ensure the therapeutic effect.

Fig. 2 is a schematic diagram of the method for treating oral periodontitis using the utility model, as shown in Fig. 2, the photodynamic oral periodontitis treatment instrument of the utility model is used in conjunction with a photosensitizer, and the photosensitizer used in this embodiment The agent is toluidine blue O, and the peak absorption peak wavelength is around 660nm; the light source 4 of the photodynamic oral periodontitis treatment instrument uses a red light LED with a wavelength of 660nm and a rated power of 7.4W; MCU2 uses a single-chip microcomputer STC12C5A60S2, and the driver 3 chip uses Qx5241A chip; the liquid crystal display screen 6 adopts an OLED screen; the heat pipe adopts a hot copper tube, and the radiator 8 adopts heat dissipation fins, and its operation method is as follows:

Step 1) First, instill the photosensitizer into the patient's periodontitis affected area, and set the irradiation light intensity and irradiation time according to the severity of different cases;

Step 2) The light emitted by the LED is emitted through the optical system, so that the light is irradiated on the affected part of the periodontitis. Since the absorption peak of the photosensitizer is around 660nm, when the light in this band irradiates the photosensitizer, it will be strongly absorbed by it to cause a photochemical reaction to generate singlet oxygen, which kills the pathogenic bacteria of periodontitis in the affected area. After time, the device will automatically turn off the LED light source;

Step 3) Wash off the residual photosensitizer in the mouth to complete the treatment.

By adopting the above-mentioned technology, the utility model has the following advantages: 1) It can realize the function of adjusting light intensity and timing for different cases to produce different light doses; 2) It has a display function, which can display all current setting information, and operate Convenient; 3) Through heat dissipation and heat management technology, the light decay of the therapeutic light source is better controlled; 4) The appearance is novel, the operation is convenient, and the volume is small, suitable for popularization and application.

Claims (4)

1. a light power oral cavity periodontitis therapeutic instrument, comprise shell (1) and be arranged on the power supply (9) in shell (1), MCU (2), driver (3), light source (4) and optical system (5), it is characterized in that described power supply (9) and MCU (2), driver (3) circuit connects, and power supply is provided, MCU (2) is connected with driver (3) circuit, driver (3) is connected with light source (4) circuit, MCU (2) control and drive system (3) works, driver (3) controls lighting time and the luminescence power of light source (4), light source (4) is connected with optical system (5), by optical system (5) bright dipping after light source (4) is luminous.

2. a kind of light power oral cavity according to claim 1 periodontitis therapeutic instrument, it is characterized in that described shell (1) is also provided with radiator (8), radiator (8) is positioned at light source (4) side, and radiator (8) gas outlet is positioned at shell (1) outside, the heat that light source (4) sends sheds through radiator (8).

3. a kind of light power oral cavity according to claim 1 periodontitis therapeutic instrument, it is characterized in that described shell (1) outside is provided with the LCDs (6) be connected with MCU (2), for showing the information on MCU (2).

4. a kind of light power oral cavity according to claim 1 periodontitis therapeutic instrument, it is characterized in that described shell (1) outside is provided with the button (7) be connected with MCU (2), button (7) exports dutycycle and the output time of PWM ripple for control MCU (2).