Handheld facial nerve paralysis laser therapeutic instrument

Abstract

A handheld facial nerve paralysis laser therapeutic instrument, comprising a high-energy laser module (1), an optical shaping module (2), a heat dissipation module (3) and a shell (4), wherein the high-energy laser module (1) is arranged at one end of the shell (4), and the optical power of the high-energy laser module (1) is greater than 15 W; the optical shaping module (2) is arranged in front of the high-energy laser module (1) and is configured to perform optical shaping on a high-energy laser and then directly irradiate an affected area; and the heat dissipation module (3) is arranged in a grip portion (42) at the other end of the shell (4) and is configured to cool down the high-energy laser module (1), such that the high-energy laser module (1) is in a normal temperature range within a predetermined working time. A laser chip (11) in a direct irradiation mode does not need an optical fiber coupling structure, and has a heat dissipation structure combining heat dissipation and phase-change thermal storage, such that the whole therapeutic instrument has a small size and a compact structure, is convenient to hold, can deeply penetrate biological tissue, and has a wide range of action and good treatment effects, ensuring the portability and safety of using the therapeutic instrument in a home environment by means of multiple safety measures.

Description

A handheld laser therapeutic device for facial nerve paralysis

[0001] Related applications

[0002] This application claims priority to Chinese patent application No. 2023109309715 filed on July 27, 2023, entitled "A handheld laser therapeutic device for facial nerve paralysis," the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present disclosure belongs to the technical field of laser rehabilitation, and particularly relates to a handheld facial nerve paralysis laser therapeutic device. Background Art

[0004] Facial nerve paralysis, commonly known as facial neuritis or facial nerve paralysis, is a disease characterized by motor dysfunction of the facial expression muscles. It is a common and frequently occurring disease that is not restricted by age. The general symptoms are facial paralysis, and patients often cannot even complete the most basic movements such as raising eyebrows, closing eyes, and puffing out mouth. The current principle of non-surgical treatment for facial neuritis is to promote the early resolution of local inflammation and edema, and to promote the recovery of nerve function. The specific methods are mainly as follows:

[0005] (1) Drug treatment, such as the use of antiviral, neurotrophic, glucocorticoid, B vitamins, eye drops, and eye ointments. Long-term use may cause damage to the face or lead to increased drug resistance;

[0006] (2) Acupuncture treatment: Acupuncture, as an ancient method of manual puncture, is a minimally invasive treatment method. However, long-term use may cause trauma.

[0007] (3) Physical therapy, including massage, ultrashort wave, low and medium frequency electrotherapy, etc., has effective therapeutic effects.

[0008] Clinical studies have shown that laser therapy can be used for pain relief, inflammation, and wound healing. Currently, laser therapy is increasingly being used to treat facial nerve paralysis, with high-intensity laser therapy being more effective. Laser therapy is non-invasive, has no side effects, and can be used long-term, making it promising for use in homes and other settings. High-intensity lasers, with power exceeding 15W, offer a larger irradiation area, deeper penetration, and shorter treatment times than traditional low-intensity laser therapy (less than 0.5W), resulting in better therapeutic outcomes.

[0009] Currently, high-intensity laser therapy mostly uses semiconductor laser therapy devices. Traditional semiconductor laser therapy devices use fiber-coupled output, making fiber-coupled modules difficult to miniaturize. Furthermore, high-intensity lasers (with power levels of up to 10W) ​​require large heat dissipation structures, such as a semiconductor refrigeration (TEC) to dissipate heat, making them difficult to implement in a handheld configuration. Therefore, semiconductor laser therapy devices are typically used in professional settings such as hospitals. Currently, there are no handheld facial paralysis therapy devices suitable for home use, and a suitable handheld facial paralysis therapy device is urgently needed.

[0010] Public content

[0011] In view of the above situation, in order to overcome the defects of the existing technology, the purpose of the present invention is to provide a handheld facial nerve paralysis laser therapeutic device, which can utilize the direct irradiation method of the laser chip and does not require a fiber coupling structure, thereby realizing the miniaturization and handheld structure of the laser module; and according to the intermittent working characteristics of the laser therapeutic device, a heat dissipation structure combining heat dissipation and heat storage is used to ensure the safe operation of the high-energy laser during the treatment time; due to the high laser power, multiple safety measures are proposed to ensure portability and safety when used in a home environment.

[0012] In order to achieve the above objectives, the technical solutions adopted by this disclosure are:

[0013] A handheld laser therapeutic device for facial nerve paralysis includes a high-energy laser module, an optical shaping module, a heat dissipation module, and a housing. The high-energy laser module is mounted at one end of the housing, and its optical power is greater than 15W. The optical shaping module is positioned before the high-energy laser module to directly irradiate the affected area after optical shaping with the high-energy laser. The heat dissipation module is positioned within the grip at the other end of the housing to cool the high-energy laser module, ensuring it remains within a normal temperature range within a predetermined operating time. This handheld laser therapeutic device for facial nerve paralysis allows the optical shaping module to directly irradiate the affected area with the high-energy laser, thereby treating facial paralysis. This high-energy laser direct irradiation method eliminates the need for fiber coupling, saving space and miniaturizing the overall structure of the therapeutic device. The high-energy laser module's optical power exceeds 15W, enabling the therapeutic device to achieve a wide irradiation area, deep penetration, and short treatment time. The heat dissipation module ensures that the high-energy laser module remains within the normal temperature range during the scheduled operating time, protecting it from damage and reducing maintenance costs. The housing's grip facilitates handheld operation. The entire therapeutic device is small and compact, making it easy to hold in hand. It also achieves deep tissue penetration, a wide range of action, and excellent therapeutic effects.

[0014] Preferably, the heat dissipation module includes a heat sink, a phase-change heat storage box, and a fan. The high-energy laser module is fixedly mounted on the heat sink. The heat sink is provided with a heat conduction column. The phase-change heat storage box is provided at the rear end of the heat sink. The phase-change heat storage box is sealed with a sealing ring and a cover plate. The fan is provided at the lower end of the heat sink. The high-energy laser module, the optical shaping module, and the heat dissipation module are all provided inside the housing. With this arrangement, the heat generated by the high-energy laser module during operation can be first transferred to the heat sink, and then transferred to the phase-change heat storage box via the heat conduction column on the heat sink. The phase-change heat storage box is used to store heat, and the fan realizes air convection, carrying the heat from the heat sink and the heat conduction column out of the therapeutic device. Through the heat dissipation coordination of the heat sink, the phase-change heat storage box, and the fan, a simple heat dissipation structure of the therapeutic device is achieved, and the temperature control of the laser module is achieved through a heat dissipation method that combines heat dissipation and heat storage.

[0015] Preferably, the high-energy laser module includes a main laser module and an indicator light module. The high-energy laser module uses multiple laser chips. The main laser module uses a laser diode. The laser output power of the laser diode is greater than 15W, and the wavelength range is 800nm-1000nm. The laser output power of a single laser chip is greater than 4W. The indicator light module uses a light-emitting diode. The indicator light module has an luminous power of less than 5mW and a wavelength range of visible light wavelengths of 400nm-760nm. With this configuration, the optical power of the high-energy laser module can be increased to greater than 15W by using multiple laser chips with a power greater than 4W of the laser diode, thereby ensuring high-power laser treatment. The laser diode has a wavelength range of 800nm-1000nm, and the laser is in the near-infrared light range, which has a wide range of action and is convenient for treating facial paralysis. The indicator light module uses the visible light range to achieve the indication function.

[0016] Preferably, the main laser module uses a repetitive pulse operating mode, using a duty cycle to adjust the irradiation dose per unit time to control the thermal sensation. The duty cycle is the ratio of the luminous duration in a single repetitive pulse. The repetitive pulse operating mode can be adjusted in three levels or other adjustment methods, and the repetitive pulse operating frequency range is 0.1 kHz to 50 kHz. Because the main laser module uses a repetitive pulse operating mode, the peak optical power remains unchanged in this mode, that is, the penetration depth remains unchanged. The duty cycle adjusts the irradiation dose per unit time. The user adjusts the duty cycle based on the thermal sensation of the laser irradiation. A higher duty cycle results in a higher irradiation dose per unit time and a higher thermal sensation; a lower duty cycle results in a lower irradiation dose per unit time and a lower thermal sensation.

[0017] Preferably, the optical shaping module includes a light homogenizer and a shaping lens. The high-energy laser module uses the light homogenizer to form a coaxial light spot, while the shaping lens ensures that the light source emitted by the high-energy laser module has a consistent light angle and uniform power density. This setup allows the laser beams generated by multiple laser chips with a power greater than 4W to be coaxially homogenized into a single light spot through the light homogenizer. This is then optically shaped by the shaping lens to produce a high-energy-density, uniform light spot with the same therapeutic effect as a single-tube laser with an optical power greater than 15W.

[0018] The housing preferably also includes a working portion, which incorporates a laser window for outputting laser light shaped by the optical shaping module. The laser light emitted through the laser window has a full divergence angle of 10°-30°. The handle is sequentially embedded with indicator lights and a switch from top to bottom. The indicator lights, from left to right, include a power indicator, a laser operation indicator, and an alarm light. The switches, from left to right, include a power switch, a child lock, and an emergency stop switch. The power switch utilizes a delayed on / off switch. This laser window arrangement enables the laser light generated by the main laser module and the indicator light module to be output from the same window. The laser light emitted through the laser window has a full divergence angle of 10°-30°, ensuring maximum safety. The power indicator indicates that the power switch is on, the laser operation indicator indicates that the high-energy laser module has begun operating, and the alarm light indicates that the therapeutic device is operating abnormally. These three indicators, namely, the power indicator, the laser operation indicator, and the alarm light, facilitate confirmation of the therapeutic device's operating status. The power switch turns the device on and off. The child lock prevents children from opening the device, and the emergency stop switch allows for quick shutdown. The power switch uses a delayed switch to prevent false triggering. The power switch, child lock, and emergency stop switch are used to ensure the safety of the therapeutic device.

[0019] Preferably, the device also includes a safety module, comprising an emergency stop switch, a child lock, a buzzer, and a timer. The emergency stop switch quickly shuts down the high-energy laser module, while the buzzer indicates when the high-energy laser module is on and emitting light. The child lock utilizes a small toggle switch. The timer controls the high-energy laser module and buzzer to operate according to the operating program. Both the buzzer and timer are located within the housing, and the timers are independent. This configuration allows the high-energy laser module to be quickly shut down via the emergency stop switch, ensuring the safety of the therapeutic device during use. The buzzer indicates when the laser is emitting light during operation. The child lock utilizes a small toggle switch, requiring greater force to activate the device, thereby protecting it from children. The timer utilizes a pair of independent timers, allowing for precise dual control of the operating time of the high-energy laser module and the buzzer, ensuring that the high-energy laser module operates within the predetermined operating time. The combination of these multiple safety measures, including the emergency stop switch, the child lock, the buzzer, and the timer, ensures the portability and safety of the therapeutic device in a home environment.

[0020] Preferably, the device further includes a control module, which is used to control the laser drive circuit and control circuit to start or stop operation. The control module issues a first control instruction based on the operating voltage and current parameters of the power switch, and issues a second control instruction based on the data information of the high-energy laser module being turned on. When the first control instruction includes information that the power switch is continuously turned on, the control module controls the power indicator light to emit a first color of light. When the second control instruction includes information that the high-energy laser module is turned on and running, the control module controls the laser operation indicator light to emit a second color of light. With this control module configuration, the power switch and the power indicator light can be coordinated, as can the high-energy laser module and the laser operation indicator light.

[0021] Preferably, the control module also includes an alarm module, which is used to obtain circuit board temperature and current information. When the collected temperature and current exceed the set alarm temperature and current, the alarm light is controlled to emit a third color of light. This alarm module configuration enables the circuit board and the alarm light to cooperate, thereby ensuring the safety of the circuit board during operation of the high-energy laser module.

[0022] Further preferably, the control module also includes an automatic shutdown device that automatically stops the high-energy laser module within a predetermined operating time based on two independent timers, with the operating time being 5 minutes. This automatic shutdown device can strictly limit the operating time of the laser based on the two independent timers. When either timer reaches the specified time, the automatic shutdown device stops the laser therapy device. The operating time of the laser therapy device is set to 5 minutes, which not only ensures safety but also facilitates heat dissipation of the laser.

[0023] The handheld facial nerve paralysis laser therapeutic device of the present application includes a high-energy laser module, an optical shaping module, a heat dissipation module and a shell. The high-energy laser module is arranged at one end of the shell, and the optical power of the high-energy laser module is greater than 15W. The optical shaping module is arranged in front of the high-energy laser module and is used to directly irradiate the affected area after optical shaping of the high-energy laser. The heat dissipation module is arranged in the grip part at the other end of the shell, and is used to cool the high-energy laser module so that the high-energy laser module is within the normal temperature range within the predetermined working time. The high-energy laser module consists of a main laser module and a pointer light module. The main laser module uses a laser diode with an output power greater than 15W and a wavelength range of 800nm-1000nm. A single laser chip outputs a laser power greater than 4W. The pointer light module uses a light-emitting diode with an output power less than 5mW and a visible light wavelength range of 400nm-760nm. The optical shaping module includes a homogenizer and a shaping lens. The laser beams generated by multiple laser chips with a power greater than 4W are coaxially homogenized into a single light spot through the homogenizer. The shaping lens then optically shapes the laser spot to produce a high-energy-density, uniform light spot with the same therapeutic effect as a single-tube laser with an optical power greater than 15W. The heat dissipation module includes a heat sink, a phase-change heat storage box, and a fan. It controls the temperature of the laser module through a combination of heat dissipation and heat storage. The housing also includes a working portion, which incorporates a laser window for outputting laser light shaped by the optical shaping module. The laser light emitted through the laser window has a full divergence angle of 10°-30°. The grip is sequentially embedded with indicator lights and switches from top to bottom. The indicator lights, from left to right, include a power indicator, a laser operation indicator, and an alarm light. The switches, from left to right, include a power switch, a child lock, and an emergency stop switch. The power switch uses a delayed on / off switch to prevent false triggering. The safety module includes an emergency stop switch, a child lock, a buzzer, and a timer. The circuit board includes a laser driver circuit and a control circuit. These circuits control and drive the entire therapeutic device, thereby coordinating the high-energy laser module with the fan, buzzer, timer, indicator light, and switch. The circuit board controls the high-energy laser module by simultaneously turning on the power switch, child lock, and emergency stop switch, thereby preventing accidental activation of the device. The circuit board can also deactivate the high-energy laser module by turning off any of the three switches, ensuring safe use of the device. The control module coordinates the power switch and power indicator light, as well as the high-energy laser module and laser operation indicator light. The alarm module coordinates the circuit board and the alarm light. An automatic shutdown device shuts down the device within a specified timer to ensure safe use. The entire device is compact and easy to hold, offering deep tissue penetration, a wide range of action, and excellent therapeutic effects. Multiple safety measures ensure portability and safety for home use.

[0024] Compared with the prior art, the beneficial results of the present disclosure are:

[0025] 1. A handheld facial nerve paralysis laser treatment device suitable for home use has been proposed. The laser's emission power is greater than 15W, the wavelength range is 800nm-1000nm, the optical power is greater than 15W, and the laser's divergence angle through the laser window is 10°-30°, which is eye-friendly and the handheld structure is more convenient.

[0026] 2. A direct irradiation method of laser chip is proposed, which does not require a fiber coupling structure and realizes the miniaturization of high-energy laser modules;

[0027] 3. A heat dissipation method combining heat dissipation and phase change heat storage is proposed to achieve temperature control of the high-energy laser module. A heat sink, heat conduction column, phase change heat storage box, and fan are used. The heat sink transfers heat from the bottom of the laser. The heat conduction column facilitates air convection and exhausts heat from the treatment device through the fan. The phase change heat storage box stores the remaining heat. When the laser is working, the phase change heat storage box stores heat. When the laser is not working, the heat from the phase change heat storage box is discharged through natural heat dissipation.

[0028] 4. Multiple safety measures are proposed to ensure the safety of home use, including: (1) using visible light indicator light; (2) the main laser adopts a 10°-30° divergence angle to ensure that the laser beam diffuses immediately after exiting the laser window and will not burn the skin or ignite objects; (3) using a delay switch to prevent the device from being triggered by mistake; (4) using an emergency stop switch as a protection to achieve rapid shutdown of the laser light; (5) controlling the operation of the high-energy laser module by turning on the power switch, child lock and emergency stop switch at the same time, thereby preventing the device from being started by mistake; (6) using two independent timers to automatically shut down the laser to ensure that the high-energy laser module and buzzer work according to the operating program; (7) using a buzzer to indicate the working status of the laser. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are included to provide a further understanding of the embodiments and are incorporated into and constitute a part of this specification. The accompanying drawings illustrate the embodiments and, together with the description, serve to explain the principles of the present disclosure. Other embodiments and many of the expected advantages of the embodiments will be readily apparent as they become better understood by reference to the following detailed description. The elements of the drawings are not necessarily to scale with respect to each other. Like reference numerals designate corresponding similar parts.

[0030] FIG1 is a schematic structural diagram of a handheld facial nerve paralysis laser therapeutic apparatus according to one embodiment of the present disclosure;

[0031] FIG2 is a schematic diagram of a partial structure of a handheld facial nerve paralysis laser therapeutic apparatus according to an embodiment of the present disclosure;

[0032] FIG3 is a schematic diagram of a partial structure of a heat dissipation module according to a specific embodiment of the present disclosure;

[0033] FIG4 is a working state diagram of a repetitive pulse working mode according to a specific embodiment of the present disclosure;

[0034] FIG5 is a schematic structural diagram of a housing according to a specific embodiment of the present disclosure;

[0035] FIG6 is a schematic diagram of a partial structure of a housing according to an embodiment of the present disclosure.

[0036] The meaning of the numbers in the figure: 1-high-energy laser module, 11-laser chip, 2-optical shaping module, 21-shaping lens, 3-heat dissipation module, 31-heat dissipation plate, 32-heat dissipation copper column, 33-phase change heat storage box, 34-fan, 35-sealing ring, 36-cover, 4-housing, 41-working part, 411-laser window, 42-grip part, 421-power indicator light, 422-laser operation indicator light, 423-alarm light, 424-power switch, 425-child lock, 426-emergency stop switch, 43-upper cover, 44-bottom cover, 5-circuit board. DETAILED DESCRIPTION

[0037] In the following detailed description, reference is made to the accompanying drawings, which form a part of the detailed description and are shown by way of illustrative specific embodiments in which the present disclosure may be practiced. In this regard, directional terms, such as "top," "bottom," "left," "right," "up," "down," etc., are used with reference to the orientation of the figures being described. Because components of the embodiments may be positioned in several different orientations, directional terms are used for illustrative purposes and are in no way limiting. It should be understood that other embodiments may be utilized or logical changes may be made without departing from the scope of the present disclosure. The following detailed description should therefore not be taken in a limiting sense, and the scope of the present disclosure is defined by the appended claims.

[0038] One aspect of the present disclosure proposes a handheld facial nerve paralysis laser therapeutic device. Figure 1 shows a structural schematic diagram of a handheld facial nerve paralysis laser therapeutic device of an embodiment of the present disclosure. As shown in Figure 1, the handheld facial nerve paralysis laser therapeutic device includes a high-energy laser module 1, an optical shaping module 2, a heat dissipation module 3 and a shell 4. The high-energy laser module 1 is arranged at one end of the shell 4, and the optical power of the high-energy laser module 1 is greater than 15W. The optical shaping module 2 is arranged in front of the high-energy laser module 1 and is used to directly irradiate the affected area after optical shaping of the high-energy laser. The heat dissipation module 3 is arranged in the gripping portion 42 at the other end of the shell 4, and is used to cool the high-energy laser module 1 so that the high-energy laser module 1 is in the normal temperature range of 25 degrees to 60 degrees within the predetermined working time.

[0039] In this embodiment, the optical shaping module 2 performs optical shaping on the high-energy laser and then directly irradiates the affected area, thereby treating facial paralysis. This direct high-energy laser irradiation method eliminates the need for a fiber-optic coupling structure, saving space and miniaturizing the overall structure of the therapeutic device. The optical power of the high-energy laser module 1 exceeds 15W, enabling the therapeutic device to achieve a large irradiation area, deep penetration depth, and short treatment time. The heat dissipation module 3 ensures that the high-energy laser module 1 is maintained at 25-60 degrees during operation, thereby protecting it from damage and reducing maintenance costs. The grip portion 42 of the housing 4 facilitates a handheld structure. The entire therapeutic device is small in size, compact in structure, and easy to hold. It penetrates biological tissue deeply, has a wide range of action, and has excellent therapeutic effects.

[0040] Figure 2 shows a partial structural schematic diagram of a handheld facial nerve paralysis laser therapeutic device according to an embodiment of the present disclosure, and Figure 3 shows a partial structural schematic diagram of a heat dissipation module 3 according to a specific embodiment of the present disclosure. Please refer to Figures 1 to 3 for details. The heat dissipation module 3 is composed of a heat dissipation plate 31, a heat conduction column 32, a phase change heat storage box 33, a sealing ring 35, a cover plate 36 and a fan 34. The high-energy laser module 1 is fixedly mounted on the heat dissipation plate 31. The heat dissipation plate 31 is provided with a heat conduction column 32. The phase change heat storage box 33 is arranged at the rear end of the heat dissipation plate 31. The sealing ring 35 and the cover plate 36 are used to seal solid-liquid phase change materials, such as phase change wax, etc. The fan 34 is arranged at the lower end of the heat dissipation plate 31, and the phase change heat storage box 33 and the shell 4 are both completely sealed to protect the safety of the equipment.

[0041] In this embodiment, the heat dissipation module 3 transfers the heat generated by the high-energy laser module 1 during operation to a heat sink 31. The heat is then transferred to a phase-change heat storage box 33 via heat transfer columns 32 on the heat sink 31. The phase-change heat storage box 33 is used to store heat, and a fan 34 facilitates air convection, dissipating heat from the heat sink 31 and heat transfer columns 32 out of the therapeutic device. This ensures that the temperature of the high-energy laser module 1 remains within a range of 25 to 60 degrees Celsius within 5 minutes, i.e., during operation. The coordinated heat dissipation of the heat sink 31, phase-change heat storage box 33, and fan 34 achieves a simple heat dissipation structure for the therapeutic device. Furthermore, this combined heat dissipation and storage method allows for temperature control of the laser module.

[0042] In this embodiment, the phase-change heat storage box 33 is filled with a solid-liquid phase-change material, such as phase-change wax. The phase-change enthalpy of phase-change wax is generally 200 J / g, and the phase-change temperature is 50-60°C. This not only meets the heat dissipation temperature requirements of the laser, but also meets the requirements of small size and high heat storage capacity. When the laser is operating, the phase-change heat storage box 33 stores heat; when the laser is not operating, the heat in the phase-change heat storage box 33 is dissipated through natural heat dissipation.

[0043] In this embodiment, since the high-energy laser module 1 uses a laser diode, the laser diode has a very high electro-optical conversion efficiency of up to 70%. When the optical power of the laser is 15W, the electro-optical conversion efficiency is 50%, that is, 15W of electrical power is converted into heat for the device. If the heat is not dissipated in time, the temperature of the laser diode will rise sharply until the device is damaged. When the optical power of the laser is 15W and the working time is 5 minutes, the electro-optical conversion efficiency is 50%, and the device will generate 4500J of heat. The phase change heat storage box 33 of the therapeutic device can store 1cm*2cm*11cm of phase change paraffin, a total of 19.8g. At the same time, considering the heat capacity of paraffin, it can store 4950J of heat, thereby significantly reducing the heat dissipation pressure of the laser.

[0044] In a specific embodiment, the high-energy laser module 1 is a main laser module and an indicator light module. The high-energy laser module 1 uses multiple laser chips 11, and the main laser module uses a laser diode. The power of the laser output by the laser diode is greater than 15W. In this embodiment, the wavelength is 810±10nm, 830±10nm, 850±10nm, 880±10nm, 905nm±10nm, 940nm±10nm or 980±10nm, as well as the above wavelength combination. The wavelength combination can be selected according to specific needs, as long as the wavelength range is 800nm-1000nm. Specifically, on the one hand, these wavelengths are concentrated in the near-infrared band, have a higher biological tissue penetration depth than other laser bands, and can act on the facial paralysis nerve site. On the other hand, the semiconductor laser chip 11 of these wavelengths has high power and low cost.

[0045] In this embodiment, the power of the laser output by a single laser chip 11 is greater than 4W, the main laser module uses 4-5 laser chips 11, the indicator light module uses a light-emitting diode, and the light-emitting power of the indicator light module is less than 5mW. More specifically, the wavelength of the indicator light can be a visible light wavelength of 520nm or 632nm to achieve the indication effect.

[0046] In other embodiments, the number of laser chips 11 in the main laser module can be set according to specific production requirements, as long as the optical power of the high-energy laser module 1 is greater than 15W, thereby ensuring high-power laser treatment. Furthermore, the indicator light module has an luminous power of less than 5mW and a wavelength of 100 nm. Other visible light wavelengths can also be used as required, as long as the indicator light wavelength falls within the visible light wavelength range of 400 nm to 760 nm and satisfies the indication function. Therefore, the number can be set according to specific requirements.

[0047] In a specific embodiment, the optical shaping module 2 includes a light homogenizer and a shaping lens. The light homogenizer forms a coaxial light spot from the high-energy laser module 1, while the shaping lens ensures that the light source emitted by the high-energy laser module 1 has a consistent angle and uniform power density. The light homogenizer homogenizes the laser beams generated by multiple laser chips 11 with a power greater than 4W into a single spot. The light homogenizer then undergoes optical shaping through the shaping lens to produce a high-energy-density, uniform spot. The therapeutic effect of this spot is comparable to that of a single-tube laser with an optical power greater than 15W.

[0048] FIG4 illustrates an operating state diagram of a repetitive pulse operating mode according to a specific embodiment of the present disclosure. As shown in FIG4 , the main laser module utilizes a repetitive pulse operating mode, adjusting the irradiation dose per unit time by using a duty cycle to control the thermal sensation. The duty cycle is the ratio of the luminous duration in a single repetitive pulse. The repetitive pulse operating mode can be divided into three adjustment modes, and the repetitive pulse operating frequency range is 0.1 kHz to 50 kHz. Because the main laser module utilizes a repetitive pulse operating mode, the peak optical power remains unchanged in this mode, i.e., the penetration depth remains unchanged. The duty cycle adjusts the irradiation dose per unit time. The user adjusts the duty cycle based on the thermal sensation of the laser irradiation. A higher duty cycle results in a higher irradiation dose per unit time and a higher thermal sensation; a lower duty cycle results in a lower irradiation dose per unit time and a lower thermal sensation.

[0049] In other embodiments, because the transmission of light in biological tissue decays exponentially, the higher the laser power, the more conducive it is to increasing the penetration depth of the laser and reaching the lesion tissue; in addition, increased light power helps to reduce treatment time and improve user experience. To achieve this goal, the main laser module adopts a repetitive pulse working mode. In the repetitive pulse working mode, the peak light power remains unchanged, that is, the penetration depth remains unchanged. The irradiation dose per unit time is adjusted by the duty cycle, and the repetitive pulse working frequency can adopt other high-frequency modulation frequencies. The repetitive pulse working mode can adopt other adjustment methods and can be set according to specific needs.

[0050] Continuing to refer to Figure 5, Figure 5 shows a structural schematic diagram of a shell 4 of a specific embodiment of the present disclosure. As shown in Figure 5, the shell 4 also includes a working part 41, and the working part 41 is embedded with a laser window 411 for outputting the laser shaped by the optical shaping module 2. The laser window 411 has a size of 30mm-40mm, and the full divergence angle of the laser output through the laser window 411 is 10°-30°. The gripping part 42 is embedded with indicator lights and switches from top to bottom. The indicator lights are provided with a power indicator light 421, a laser operation indicator light 422, and an alarm light 423 from left to right. The switches are provided with a power switch 424, a child lock 425, and an emergency stop switch 426 from left to right. The power switch 424 adopts a delayed switch, which requires a delay of 3s or more to open.

[0051] In this embodiment, the lasers generated by the main laser module and the indicator light module are output from the same window, and the full angle of laser divergence is 10°-30°. The laser divergence irradiation can ensure maximum safety. The power indicator light 421, the laser operation indicator light 422, and the alarm light 423 are used to facilitate confirmation of the operating status of the therapeutic device. When the three indicators start to light up, the power indicator light 421 prompts that the power switch 424 is turned on, the laser operation indicator light 422 prompts that the high-energy laser module 1 starts to run, and the alarm light 423 prompts that the therapeutic device is working abnormally. The power switch 424 is used to turn the power on or off, the child lock 425 can ensure that the device will not be turned on by children, and the emergency stop switch 426 can realize the rapid shutdown of the therapeutic device. The power switch 424 adopts a delayed switch method to prevent false triggering. When the power switch 424, the child lock 425, and the emergency stop switch 426 are turned on at the same time, the main laser and the indicator light can work. If any of the switches is disconnected, the main laser module and the indicator light module cannot work; the power switch 424, the child lock 425, and the emergency stop switch 426 can ensure the safety of the use of the therapeutic device.

[0052] In a specific embodiment, a safety module is also included. The safety module includes an emergency stop switch 426, a child lock 425, a buzzer, and a timer. The emergency stop switch 426 controls the rapid shutdown of the high-energy laser module 1. The buzzer is used to prompt the high-energy laser module 1 to be turned on and emit light. When the switch is turned on, the buzzer emits a "beep" to prompt the system to be turned on. During the operation of the laser, the buzzer emits a "beep" every minute to prompt that the laser is emitting light. The child lock 425 uses a small toggle switch. The buzzer and timer are both set in the housing 4. The timer uses two independent timers to ensure that the high-energy laser module 1 automatically stops after running for 5 minutes. One timer counts for 5 minutes and the other counts for 5 minutes and 5 seconds.

[0053] In this embodiment, the emergency stop switch 426 quickly turns off the high-energy laser module 1 to ensure the safety of the therapeutic device during use. The buzzer prompts that the laser is emitting light during the operation of the laser. The child lock 425 uses a small toggle switch that requires greater force to protect the device from being opened by children. The toggle force should be greater than 10 Newtons. Two independent timers can accurately control the operating time of the high-energy laser module 1 and the buzzer, thereby ensuring that the high-energy laser module 1 operates within the predetermined working time. The coordination of multiple safety measures such as the emergency stop switch 426, the child lock 425, the buzzer, and the timer can ensure the portability and safety of the therapeutic device when used in a home environment.

[0054] In a specific embodiment, a control module is further included. The control module is used to control the laser drive circuit and control circuit to start or stop operation. The control module issues a first control instruction based on the operating voltage and current parameters of the power switch 424, and issues a second control instruction based on the data information indicating the high-energy laser module 1 is turned on. When the first control instruction contains information that the power switch 424 is continuously turned on, the control module controls the power indicator light 421 to illuminate and display green. When the second control instruction contains information that the high-energy laser module 1 is turned on and operating, the control module controls the laser operation indicator light 422 to illuminate and display yellow. In other embodiments, the power indicator light 421 and the laser operation indicator light 422 can be illuminated in other colors, and the colors of the power indicator light 421 and the laser operation indicator light 422 can be different, or the same color but with different brightness, as long as they serve as indicators.

[0055] In a specific embodiment, the control module also includes an alarm module, which is used to obtain temperature and current information of the circuit board 5. When the collected temperature and current exceed the set alarm temperature and current, the alarm light 423 is controlled to illuminate and display red, thereby ensuring that the circuit board 5 is operating when the high-energy laser module 1 is in operation. In other embodiments, the color of the alarm light 423 when illuminated can be other colors, and the color of the alarm light 423 can be different from that of the power indicator light 421 and the laser operation indicator light 422, or the same color but with different brightness, as long as it serves the purpose of indicating.

[0056] Furthermore, in a specific embodiment, the control module further includes an automatic shutdown device, which controls the high-energy laser module 1 to automatically stop operating within a predetermined working time according to two independent timers.

[0057] In this embodiment, the automatic shutdown device strictly limits the laser's operating time using two independent timers. When either timer reaches its limit, the device stops the laser therapy device. The laser therapy device's operating time is set to five minutes, ensuring safety while also facilitating heat dissipation.

[0058] In other examples, the working time setting of the laser therapy device can be 5 minutes and 5 seconds or other time, as long as other similar time periods before and after the 5-minute time period are met.

[0059] Figure 6 shows a partial schematic structural diagram of a housing 4 according to one embodiment of the present disclosure. Further referring to Figures 1-2 and 5-6, the housing 4 also includes an upper cover 43 and a bottom cover 44. In this embodiment, the upper cover 43 is 5.6 cm square, the bottom cover 44 is 3.6 cm square, and the back of the housing 4, i.e., the working portion 41 adjacent to the directly illuminated side, measures 6 cm x 5.6 cm, while the grip portion 42 measures 10 cm x 3.6 cm. In other embodiments, the other dimensions of the upper cover 43, the bottom cover 44, and the housing 4 can be customized based on production parameters and actual application scenarios.

[0060] This disclosure proposes a handheld facial nerve paralysis laser therapeutic device, the working principle of which is:

[0061] The handheld facial nerve paralysis laser therapeutic device of the present application includes a high-energy laser module, an optical shaping module, a heat sink, a phase change heat storage box, a fan, a circuit board, a safety module and a housing. The present disclosure proposes that the high-energy laser module adopts a laser chip direct irradiation method, including a main laser module and an indicator light module. The main laser adopts a laser diode with a wavelength of 810±10nm, 830±10nm, 850±10nm, 880±10nm, 905nm±10nm, 940nm±10nm, 980±10nm, or a combination of the above wavelengths, with an optical power greater than 15W, and the power of the laser output by a single laser chip is greater than 4W; the indicator light adopts a light-emitting diode with a wavelength range of 400nm-760nm visible light wavelength and a power of less than 5mW. It is output from the same window as the main laser, and the full angle of divergence of the laser output through the laser window is 10°-30°. The control module drives the main laser module and the indicator light module. The optical shaping module includes a homogenizer and a shaping lens. The laser beams generated by multiple laser chips with a power greater than 4W are coaxially homogenized into a light spot through the homogenizer, and then optically shaped by the shaping lens to produce a high-energy-density, uniform light spot. The therapeutic effect of the light spot is the same as that of a single-tube laser with an optical power greater than 15W. The safety module includes an emergency stop switch, child lock, buzzer, and timer. The emergency stop switch quickly shuts off the laser beam by pressing it. When the power switch is on, a buzzer sounds a "beep" to indicate system startup. During operation, the high-energy laser module beeps every minute to indicate laser emission. The child lock uses a small toggle switch to prevent children from opening the device. Indicators include a power indicator, a laser operation indicator, and an alarm light. When the power switch is on, the power indicator turns green. The main laser and indicator light operate only when the power switch, child lock, and emergency stop switch are simultaneously on. If any of these switches are off, the main laser module and indicator light module will not operate. Two independent timers ensure the high-energy laser module automatically stops after five minutes of operation. One timer is set for five minutes, and the other for five minutes and five seconds. These two independent timers ensure that the laser module and buzzer operate according to program. The housing integrates the laser window, power indicator, laser operation indicator, alarm light, power switch, child lock, and emergency stop switch. When the power switch is on and remains on for 3 seconds or longer, the power indicator lights up green. When the power switch, child lock, and emergency stop switch are all on simultaneously, the high-energy laser module begins operating, and the laser operation indicator lights up yellow. When the circuit board temperature is too high or the current is too high, the alarm light lights up red. Based on the operating characteristics of the handheld facial nerve paralysis laser therapy device, the heat dissipation module uses heat dissipation and heat storage to achieve temperature control of the high-energy laser module. It consists of a heat dissipation copper plate, a heat conduction copper column, a phase change heat storage box, and a fan, which can ensure that the laser module temperature is maintained within 5 minutes.The high-energy laser module transfers heat to the heat dissipation copper plate, which then transfers the heat to the phase change heat storage box through the heat conduction copper column. The fan realizes air convection and carries the heat from the heat dissipation copper plate and the heat conduction copper column out of the equipment.

[0062] In this disclosure, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components, unless otherwise expressly limited. Those skilled in the art will understand the specific meanings of the above terms in this disclosure based on specific circumstances.

[0063] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification and features of different embodiments or examples, unless they are mutually inconsistent.

[0064] It is obvious that those skilled in the art can make various modifications and changes to the embodiments of the present disclosure without departing from the spirit and scope of the present disclosure. In this way, if these modifications and changes are within the scope of the claims of the present disclosure and their equivalents, the present disclosure is also intended to cover these modifications and changes. The word "comprising" does not exclude the presence of other elements or steps not listed in the claims. The simple fact that certain measures are recited in mutually different dependent claims does not indicate that a combination of these measures cannot be used to advantage. Any reference signs in the claims should not be considered as limiting the scope.

Claims

1. A handheld laser therapeutic device for facial nerve paralysis, characterized in that: The invention comprises a high-energy laser module, an optical shaping module, a heat dissipation module and a shell. The high-energy laser module is arranged at one end of the shell, and the optical power of the high-energy laser module is greater than 15W. The optical shaping module is arranged in front of the high-energy laser module and is used to directly irradiate the affected area after optical shaping of the high-energy laser. The heat dissipation module is arranged in the gripping part at the other end of the shell and is used to cool the high-energy laser module so that the high-energy laser module is in a normal temperature range within a predetermined working time.

2. A handheld facial nerve paralysis laser therapeutic device according to claim 1, characterized in that: The heat dissipation module includes a heat dissipation plate, a phase change heat storage box, and a fan. The high-energy laser module is fixedly installed on the heat dissipation plate. The heat dissipation plate is provided with a heat conduction column. The phase change heat storage box is arranged at the rear end of the heat dissipation plate. The phase change heat storage box is sealed with a sealing ring and a cover plate. The fan is arranged at the lower end of the heat dissipation plate. The high-energy laser module, the optical shaping module, and the heat dissipation module are all arranged inside the shell.

3. A handheld facial nerve paralysis laser therapeutic device according to claim 1, characterized in that: The optical shaping module includes a light homogenizer and a shaping lens. The high-energy laser module forms coaxial light through the light homogenizer to form a light spot. The shaping lens is used to make the light source emitted by the high-energy laser module have a consistent light emitting angle and uniform power density.

4. A handheld facial nerve paralysis laser therapeutic device according to claim 1, characterized in that: The high-energy laser module includes a main laser module and an indicator light module. The high-energy laser module adopts multiple laser chips. The main laser module adopts a laser diode. The power of the laser diode output laser is greater than 15W, and the wavelength range is 800nm-1000nm. The power of the laser output by a single laser chip is greater than 4W. The indicator light module adopts a light-emitting diode. The light-emitting power of the indicator light module is less than 5mW, and the wavelength range is a visible light wavelength of 400nm-760nm.

5. According to the handheld facial nerve paralysis laser therapeutic instrument described in claim 4, the main laser module adopts a repeated pulse working mode, and the irradiation dose per unit time is adjusted by the duty cycle to control the thermal sensation. The duty cycle is the ratio of the luminous time in a single repeated pulse. The repeated pulse working mode can be divided into three adjustment modes, and the working frequency range of the repeated pulse is 0.1KHz-50KHz.

6. A handheld facial nerve paralysis laser therapeutic device according to claim 4, characterized in that: The shell also includes a working part, which is embedded with a laser window for outputting laser shaped by the optical shaping module, and the full divergence angle of the laser output through the laser window is 10°-30°. The holding part is embedded with indicator lights and switches from top to bottom. The indicator lights are provided with a power indicator light, a laser operation indicator light, and an alarm light from left to right. The switch is provided with a power switch, a child lock, and an emergency stop switch from left to right, and the power switch adopts a delay switch.

7. A handheld facial nerve paralysis laser therapeutic device according to claim 6, characterized in that: The device also includes a safety module, which includes the emergency stop switch, the child lock, a buzzer, an indicator light module, and a timer. The emergency stop switch controls the rapid shutdown of the high-energy laser module. The buzzer is used to prompt the high-energy laser module to be turned on and emit light. The child lock uses a small toggle switch. The timer controls the high-energy laser module and the buzzer to work according to the operating program. The indicator light module is used to indicate the emission position of the main laser. The buzzer and the timer are both arranged in the housing, and the timers are two independent ones.

8. The handheld facial nerve paralysis laser therapeutic device according to claim 7, characterized in that: It also includes a control module, which is used to control the laser driving circuit and the control circuit to start or stop working, issue a first control instruction according to the working voltage and current parameters of the power switch, and issue a second control instruction according to the data information of the high-energy laser module being turned on. When the first control instruction contains information that the power switch is continuously turned on, the control module controls the power indicator light to emit a first color of light, and when the second control instruction contains information that the high-energy laser module is turned on and running, the control module controls the laser operation indicator light to emit a second color of light.

9. The handheld facial nerve paralysis laser therapeutic device according to claim 8, characterized in that: The control module also includes an alarm module, which is used to obtain the temperature and current information of the circuit board. When the collected temperature and current are greater than the set alarm temperature and current, the alarm light is controlled to emit light of a third color.

10. The handheld facial nerve paralysis laser therapeutic device according to claim 8, characterized in that: The control module also includes an automatic shutdown device, which controls the high-energy laser module to automatically stop running within a predetermined working time according to two independent timers, and the working time is 5 minutes.

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