Terahertz irradiation system for skin scar repair

Abstract

The invention relates to the technical field of terahertz irradiation systems, in particular to a terahertz irradiation system for skin scar repair. According to the technical scheme, the device comprises a terahertz wave generation module, a transmitting antenna, a control module and a power supply module, wherein the terahertz wave generation module is used for generating continuous terahertz waves with the frequency within the range of 60-200GHz and the output power smaller than 1W; the transmitting antenna is connected with the terahertz wave generating module and used for guiding and irradiating the terahertz waves to a skin scar area. According to the terahertz irradiation system provided by the invention, low-energy terahertz waves are used for skin corium layers in an uncreated manner, and the dual advantages of being painless, safe and accurate in repair are achieved; the built-in intelligent control system can adjust the power and the distance in real time, so that scalding is effectively prevented, and the operation safety is guaranteed; meanwhile, the system has the advantages of being portable, easy to use and controllable in cost, the daily nursing requirements of families can be met, and efficient and comfortable non-invasive scar repair is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of terahertz irradiation systems, and particularly relates to a terahertz irradiation system for skin scar repair. BACKGROUND

[0002] Skin scar is a natural product in the repair process after the damage of the dermis layer of the human body, and its essence is the abnormal deposition and disordered arrangement of extracellular matrix such as collagen. Current scar treatment methods are diverse, mainly including drug treatment (such as silicone preparations), laser treatment (such as pulsed dye laser and fractional laser), microneedle therapy and filling operation, etc. These methods have certain effects, but generally have problems such as dependence on external substances, possible pain, need for professional operation or side effects.

[0003] In the field of physical therapy, using electromagnetic waves of specific wavebands to act on human tissues is an important technical direction. Terahertz waves (frequency range of 0.1-10 THz) show potential in the fields of biomedical sensing and imaging due to their low photon energy and sensitivity to biological molecules. In recent years, researchers have begun to explore the possibility of their application in treatment. In theory, terahertz waves can penetrate the epidermis layer to reach the dermis layer, and may have a regulatory effect on collagen metabolism and microcirculation in scar tissue.

[0004] However, there are many technical challenges in converting terahertz technology from theoretical research and laboratory devices into a safe, effective and clinically or home applicable scar repair device. First, existing terahertz radiation sources or experimental systems are usually bulky, complex in structure and high in cost, mainly serving scientific research and industrial detection, and cannot meet the requirements of medical and cosmetic devices for portability, ease of use and economy. Secondly, these systems lack special design for human skin scar treatment scenarios. For example, the selection of output frequency and power is not optimized to balance the penetration depth and the safety of biological effects. Too high power may cause the risk of burns, while too low power may not achieve the expected effect. Thirdly, existing systems lack intelligent control and safety guarantee mechanisms. Operators have difficulty in accurately controlling the irradiation dose, time and distance between the device and the skin, which may lead to unstable treatment effect or poor user experience. Manual control of irradiation parameters also increases the risk of thermal burns due to improper operation.

[0005] Therefore, there is an urgent need in the field for an integrated terahertz irradiation system specifically designed for skin scar repair. This system should provide optimized, safe, and effective terahertz wave output, and integrate intelligent control and user interaction functions to address the practicality, safety, and effectiveness challenges encountered by existing terahertz devices in their transformation for medical aesthetic applications. This would provide a novel, non-invasive, and painless physical therapy tool for scar repair. Therefore, this application proposes a terahertz irradiation system for skin scar repair. Summary of the Invention

[0006] The purpose of this invention is to address the problem in the prior art of needing to develop a scar repair method that can achieve painless and non-contact treatment without relying on external intervention materials, and to propose a terahertz irradiation system for skin scar repair.

[0007] The technical solution of the present invention: a terahertz irradiation system for skin scar repair, comprising:

[0008] Terahertz wave generation module, used to generate continuous terahertz waves with a frequency range of 60-200GHz and an output power of less than 1 watt;

[0009] A transmitting antenna, connected to the terahertz wave generating module, is used to guide the terahertz wave and irradiate the skin scar area;

[0010] The control module, electrically connected to the terahertz wave generation module, is used to control the output parameters of the terahertz wave; and

[0011] A power module is used to supply power to the system.

[0012] Optionally, the control module includes a timing unit, which is used to set the duration of a single irradiation, and the maximum duration of a single irradiation does not exceed 30 minutes.

[0013] Optionally, the control module includes a power control unit for setting the output power of the terahertz wave generating module to the level of hundreds of milliwatts.

[0014] Optionally, the transmitting antenna is a horn antenna, and its radiating opening is circular or square in shape.

[0015] Optionally, the system further includes a distance sensing module for detecting the real-time distance between the transmitting antenna and the skin surface, and for communicating with the control module.

[0016] Optionally, the control module is used to issue a prompt signal or interrupt the terahertz wave output when the distance sensing module detects that the real-time distance exceeds a preset threshold, wherein the preset threshold is no greater than 10 centimeters.

[0017] Optionally, the system further includes a temperature sensing module located near the radiation opening of the transmitting antenna for detecting the skin temperature of the irradiated area.

[0018] Optionally, the control module is connected to the temperature sensing module and the terahertz wave generating module, and dynamically adjusts the output power of the terahertz wave generating module according to the temperature data fed back by the temperature sensing module, so as to maintain the skin temperature within a preset range.

[0019] Optionally, the control module pre-stores at least one irradiation program corresponding to the scar type; wherein the total treatment time of the irradiation program for new scars is shorter than the total treatment time of the irradiation program for old scars.

[0020] Compared with the prior art, this application includes at least one of the following beneficial technical effects:

[0021] This invention utilizes low-energy (milliwatt-level) terahertz waves as the treatment source, with photon energies far below the threshold that would break biomolecular bonds, only one millionth the energy of X-rays. The system operates in a non-contact or near-field irradiation manner, completely avoiding the skin trauma, bleeding, and infection risks caused by lasers, microneedles, and other technologies. It achieves truly non-invasive and painless treatment with extremely high safety and good user compliance.

[0022] The 60-200GHz low-frequency terahertz waves used in the system possess both excellent skin penetration and specific action on biomolecules. They can penetrate the epidermis and reach scar tissue in the dermis, promoting the orderly arrangement and remodeling of molecules such as collagen through resonant coupling. Simultaneously, they improve local microcirculation, providing an effective physical intervention for scar repair at its root.

[0023] The integrated control module, distance sensing module, and temperature sensing module constitute an intelligent closed-loop control system. This system automatically prevents the risk of localized overheating caused by excessively close proximity to the device or excessively long single irradiation time. Through real-time feedback and power output adjustment, it ensures that the treatment process remains within a safe and comfortable parameter range, greatly improving the safety and ease of operation for home use.

[0024] With pre-set irradiation programs tailored to different scar types, the system can automatically execute optimized treatment plans. Users can operate it without specialized knowledge, lowering the barrier to entry. Its compact, handheld design makes treatment flexible and convenient, suitable for widespread use in homes and medical aesthetic clinics, achieving a balance between efficient repair and a superior user experience.

[0025] By optimizing and controlling the output power of the terahertz wave to within 1 watt and selecting a relatively mature technical solution within this frequency band, the therapeutic effect and system cost are effectively balanced.

[0026] The terahertz irradiation system provided by this invention uses low-energy terahertz waves to non-invasively treat the dermis layer of the skin, offering the dual advantages of painlessness, safety, and precise repair. Its built-in intelligent control system can adjust the power and distance in real time, effectively preventing burns and ensuring operational safety. At the same time, the system is portable, easy to use, and cost-effective, meeting the needs of daily family care and achieving efficient and comfortable non-invasive scar repair. Attached Figure Description

[0027] Figure 1 This is a block diagram illustrating the principle of a terahertz irradiation system for skin scar repair.

[0028] Figure 2 This is a picture of the scar before repair.

[0029] Figure 3 Images of actual products used in scar repair.

[0030] Figure 4 This is a picture of the actual product after scar repair. Detailed Implementation

[0031] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.

[0032] Example

[0033] like Figure 1 This invention provides a terahertz irradiation system for skin scar repair, the core components of which include: a terahertz wave generation module, a transmitting antenna, a control module, a power supply module, a distance sensing module, and a temperature sensing module. All these components are integrated into an ergonomically designed handheld housing, and each part is described in detail below.

[0034] Terahertz wave generation module 1 employs a continuous-wave terahertz source based on solid-state frequency doubling technology, with its core components being either a Gunn diode or an IMPATT diode. This module is configured to generate a continuous terahertz wave at a frequency of 100 GHz, with a rated output power of 500 milliwatts (mW), strictly controlled to within 1 watt. This selection of frequency and power parameters ensures that the terahertz wave can effectively penetrate to the dermis layer of the skin without producing damaging thermal effects on the tissue.

[0035] The transmitting antenna is a standard gain pyramidal horn antenna with a rectangular opening. It is directly connected to the terahertz wave generation module 1 via a rectangular waveguide to efficiently and directionally radiate terahertz wave energy. The antenna opening is covered with a protective window made of high-density polyethylene (HDPE) for dust protection and to prevent skin contact.

[0036] The control module is based on an embedded microcontroller (such as an ARM Cortex-M series), which integrates a timing unit, a power control unit, and a data storage unit. The timing unit is preset with a single irradiation limit of 25 minutes. The power control unit precisely adjusts the bias voltage applied to the terahertz wave generation module through a digital-to-analog converter (DAC), thereby stabilizing its output power at 500mW. The data storage unit pre-stores two irradiation programs: Program A is for new scars, with a total treatment course set at 10 days, once a day; Program B is for old scars, with a total treatment course set at 25 days, twice a day.

[0037] The distance sensing module employs a miniaturized infrared (IR) ranging sensor, mounted on one side of the horn antenna opening, with a measurement range of 0.5 cm to 15 cm. This module detects the distance between the antenna opening and the skin surface in real time and transmits the data to the control module. The control module has a set distance threshold of 10 cm. When the detected distance exceeds this threshold, a flashing yellow LED indicator on the casing will prompt the user to adjust the distance, but will not interrupt the illumination.

[0038] The temperature sensing module employs a non-contact infrared thermopile sensor, also installed near the antenna opening, to monitor the skin surface temperature of the irradiated central area in real time. The measured data is fed back to the control module. The control module has a set upper temperature limit of 41℃. When the feedback temperature approaches or reaches this upper limit, the power control unit automatically and linearly reduces the output power of the terahertz wave generation module 1, forming a closed-loop temperature control system to ensure safe and comfortable use.

[0039] The power module is a rechargeable lithium polymer battery that is charged via a USB-C interface. It powers all electronic components in the system.

[0040] Usage procedure: Users select the pre-stored irradiation program (program A or B) by using the buttons on the casing.

[0041] Hold the device close to the scar area, aligning the antenna opening with a distance of approximately 1-2 centimeters, and press the start button. The system will begin operation. The distance sensing module and temperature sensing module will simultaneously activate for monitoring. The timing unit of the control module will begin a countdown. Throughout the process, if the skin feels too hot, the temperature control system will automatically reduce the power; if the device is accidentally moved away, an LED will emit a warning. When the preset irradiation time for a single session reaches 25 minutes, the system will automatically stop operating and emit an audible alert.

[0042] Application examples

[0043] A terahertz-based method for skin scar repair involves selecting a terahertz wave source with appropriate frequency and power, and equipping it with a corresponding transmitting antenna. The antenna is then aimed at the scar area for irradiation for a certain period of time. After multiple irradiations, the scar can be removed and the skin repaired. The specific implementation is as follows:

[0044] 1. Selection of Terahertz Sources

[0045] The selection of a terahertz source mainly involves choosing the frequency and power. The terahertz frequency is related to the area of ​​the scar affected and the frequency range. Near the lower end of the band, terahertz waves have penetrating power similar to millimeter waves, while near the higher end, they have high resolution similar to optics. Considering the penetrating power of terahertz waves for scar repair, a lower frequency range should be selected. Balancing the relationship between frequency and the area of ​​the scar affected, lower frequencies and longer wavelengths result in a larger area of ​​the scar affected. Therefore, the selected frequency is the lower end of the terahertz band, generally within the range of 60-200 GHz.

[0046] For power selection in the low-end range of the terahertz frequency band, considering the technical level of the terahertz source and the energy density of scar repair, a continuous wave terahertz source is generally chosen, with an output power in the hundreds of milliwatts range, controlled within 1 watt. Output power exceeding 1 watt places higher demands on the cost and industrial requirements of the terahertz source, and also generates a certain thermal effect during scar repair, causing pain to the skin during the procedure.

[0047] 2. Preparation before scar repair

[0048] Connect the terahertz source to a transmitting power antenna, which is a device that transmits terahertz signals. Choose a horn-shaped antenna with a circular or square opening. Point the antenna opening at the scar area on the skin, such as... Figure 2 As shown in the dotted box, turn on the terahertz wave source and irradiate the scar with terahertz waves. The heat perceived by the skin demonstrates the effectiveness of terahertz waves on dermal collagen. Adjust the distance between the antenna and the scar according to each person's skin sensitivity; generally, the antenna opening should be close to the scar. Because winter and summer temperatures differ, the human body's perception of terahertz temperature varies. If the sensation of heat is too strong, move away slightly; a distance of no more than 10 centimeters is recommended.

[0049] 3. Scar Repair Process

[0050] A terahertz source antenna is used to irradiate the scar area for a certain period of time. After irradiation, the skin will turn red at the irradiated site, as shown in the image. Figure 3As shown in the dashed box. The reason is that terahertz energy stimulates the capillaries under the dermis, causing them to become congested and turn red. This proves that the terahertz energy has penetrated the collagen in the dermis and reached the capillaries beneath. With increasing irradiation sessions, the area around the scar will begin to turn red, eventually leading to a gradual reddening of the scar itself. After multiple irradiations, the scar will turn red, indicating that the capillaries at the scar site have been repaired at the collagen level, allowing for scar removal and skin repair. Generally, the irradiation time should not exceed 30 minutes, and no more than twice a day. The reddening will fade over time. After multiple irradiations, scar removal and skin repair can be achieved, such as... Figure 4 As shown in the dashed box. Generally, new scars require 10 consecutive days of irradiation to heal, while old scars require 25 consecutive days of irradiation to heal.

[0051] This invention relates to a terahertz irradiation system for skin scar repair, solving the problem of effectively repairing skin scars without external objects or pain. It involves selecting a terahertz wave source with appropriate frequency and power, and equipping it with a corresponding transmitting antenna. The antenna is aimed at the scar area, and irradiation is performed for a certain period of time. After multiple irradiations, the scar can be removed and the skin repaired. This invention requires no external objects, is painless, and effectively repairs scars, featuring safety, painlessness, and no side effects. With long-term use, it can effectively repair skin scars, with better results for new scars, and even old scars can be effectively treated after multiple uses. The instrument developed based on this method can be used at home or in medical aesthetic institutions.

[0052] The above specific embodiments are merely several optional embodiments of the present invention. Based on the technical solutions of the present invention and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. A terahertz irradiation system for skin scar repair, characterized in that, include: Terahertz wave generation module, used to generate continuous terahertz waves with a frequency range of 60-200GHz and an output power of less than 1 watt; A transmitting antenna, connected to the terahertz wave generating module, is used to guide the terahertz wave and irradiate the skin scar area; The control module, electrically connected to the terahertz wave generation module, is used to control the output parameters of the terahertz wave; and A power module is used to supply power to the system.

2. The terahertz irradiation system for skin scar repair according to claim 1, characterized in that, The control module includes a timing unit, which is used to set the duration of a single irradiation, and the maximum duration of a single irradiation does not exceed 30 minutes.

3. The terahertz irradiation system for skin scar repair according to claim 1, characterized in that, The control module includes a power control unit, used to set the output power of the terahertz wave generating module to the level of hundreds of milliwatts.

4. A terahertz irradiation system for skin scar repair according to claim 1, characterized in that, The transmitting antenna is a horn antenna, and its radiating opening is circular or square in shape.

5. A terahertz irradiation system for skin scar repair according to claim 1, characterized in that, The system also includes a distance sensing module, which is used to detect the real-time distance between the transmitting antenna and the skin surface, and is communicatively connected to the control module.

6. A terahertz irradiation system for skin scar repair according to claim 5, characterized in that, The control module is used to issue a prompt signal or interrupt the terahertz wave output when the distance sensing module detects that the real-time distance exceeds a preset threshold. The preset threshold is no greater than 10 centimeters.

7. A terahertz irradiation system for skin scar repair according to claim 1, characterized in that, The system also includes a temperature sensing module, located near the radiation opening of the transmitting antenna, for detecting the skin temperature of the irradiated area.

8. A terahertz irradiation system for skin scar repair according to claim 1, characterized in that, The control module is connected to the temperature sensing module and the terahertz wave generating module. Based on the temperature data fed back by the temperature sensing module, the control module dynamically adjusts the output power of the terahertz wave generating module to maintain the skin temperature within a preset range.

9. A terahertz irradiation system for skin scar repair according to claim 1, characterized in that, The control module has at least one irradiation program pre-stored for each type of scar; wherein the total treatment time for the irradiation program for new scars is shorter than the total treatment time for the irradiation program for old scars.

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