Intense pulsed light therapeutic instrument and energy output method

Abstract

The application discloses a kind of intense pulsed light therapeutic instrument and energy output method, it is related to medical instrument field, therapeutic instrument includes host computer and handle, handle includes: light emitting module, for emitting light;Speed measurement module is used to perceive and calculate the lateral movement speed and longitudinal movement speed of handle;Host computer includes: charge and discharge module, for emitting intense pulsed light by charging and discharging light emitting module;Switch module is used to send opening or closing signal to control module;Control module is used to receive setting parameter, according to setting parameter control charge and discharge module charges and discharges;It is also used to calculate the moving distance of handle in moving direction according to the moving speed of speed measurement module, when moving distance meets the preset condition of light emitting module in this moving direction, and receive the opening signal of switch module, control charge and discharge module discharges, makes light emitting module emit the light of preset energy.The application adjusts the speed of light energy output according to the habit of operator, and the light energy received per unit area is relatively uniform.

Description

Technical Field

[0001] This application relates to the field of medical devices, specifically to an intense pulsed light therapy device and an energy output method. Background Technology

[0002] Intense pulsed light (IPL) therapy devices are medical devices that treat skin diseases or improve facial skin conditions by periodically emitting intense light of various wavelengths. Their basic operation involves setting the pulse width and energy parameters through an interface, triggering a foot switch, and finally releasing light energy through a xenon lamp on the handle. Common light output methods include pulse train output and repetitive pulse output (i.e., fixed frequency output). The handle can be used in two modes: stamping mode and sliding mode.

[0003] Stamping mode: Closing the foot switch once outputs light energy to the target area once. Each output contains multiple light pulses, such as... Figure 1 As shown. The advantage is that it outputs a large amount of energy per pulse; the disadvantage is that the treatment speed is slow and it is not suitable for treating large areas of skin because the irradiation position needs to be determined by the naked eye before each pulse to avoid overlapping with areas that have been previously irradiated.

[0004] Sliding mode: The foot switch is continuously closed, the treatment handle moves continuously over the target area, and outputs light energy at a fixed frequency. Each output over the target area consists of only one pulse. Figure 2 As shown. The sliding mode achieves rapid treatment of large areas of skin by repeatedly sliding the output across the target area, thus solving the problems of the stamping mode. However, the sliding mode still has the following drawbacks:

[0005] 1. The operator needs to adapt to the light output frequency of the instrument and adjust the speed of the moving handle accordingly. However, the light output frequency is high and the speed is far beyond human reaction speed, making it impossible to accurately control the output of the specified light energy to the designated area.

[0006] 2. Because the energy output per cycle is low, the cumulative irradiation time is increased and the patient's clinical response is observed to determine whether the required treatment energy has been achieved. Although the total light energy received by the target area meets the standard, the local distribution is uneven. Moreover, the light output frequency is fixed, while the speed at which the operator moves the handle is inevitably non-linear. Therefore, there may still be insufficient or excessive light energy received per unit area, resulting in areas without therapeutic effect or local burns caused by repeated output, leading to poor skin treatment results. Summary of the Invention

[0007] This application provides an intense pulsed light therapy device and energy output method, which can solve the technical problems in the prior art that cannot effectively control the output of specified light energy in a specified area and that the light energy is unevenly distributed locally.

[0008] In a first aspect, embodiments of this application provide an intense pulsed light therapy device, including a main unit and a handpiece, characterized in that the handpiece includes:

[0009] A light-emitting module, which is used to emit light;

[0010] The speed measurement module is used to sense and calculate the lateral and longitudinal movement speeds of the handle;

[0011] The host includes:

[0012] A charging and discharging module, used to enable the light-emitting module to emit strong pulsed light through charging and discharging;

[0013] A switch module, which is used to send an on or off signal to the control module;

[0014] The control module is used to receive setting parameters and control the charging and discharging module to charge and discharge according to the setting parameters; it is also used to calculate the moving distance of the handle in the moving direction according to the moving speed of the speed measuring module, and when the moving distance meets the preset condition of the light-emitting module in the moving direction, and after receiving the opening signal from the switch module, it controls the charging and discharging module to discharge, so that the light-emitting module emits light of preset energy.

[0015] In conjunction with the first aspect, in one embodiment, the light-emitting module includes:

[0016] A light-emitting element, which is located inside the handle, is used to emit light;

[0017] A light-guiding crystal, which is disposed in the light-emitting window of the handle, is used to uniformly guide the light emitted by the light-emitting body;

[0018] A cooling element, which is mounted on the light guide crystal, is used to dissipate heat from the light guide crystal.

[0019] In conjunction with the first aspect, in one embodiment, the preset condition for the light-emitting module in this direction of movement is S. n =D n ×(1-N), where S n D is the distance the handle moves in that direction. n N represents the dimension of the light guide crystal in the direction of movement, and N is the overlap density, which is the percentage of the overlapping area in two adjacent light outputs of the light guide crystal relative to the area of ​​a single light output.

[0020] In conjunction with the first aspect, in one embodiment, the handle further includes a skin-sensing circuit for determining whether the light-guiding crystal is in contact with the skin, and sending a trigger signal to the speed measurement module when in contact with the skin.

[0021] In conjunction with the first aspect, in one embodiment, the skin sensing circuit includes a sensing capacitor at the sensing pad and a capacitive trigger chip. When the skin sensing circuit approaches the skin to a preset distance, it is considered that the light guide crystal is in contact with the skin, and the sensing capacitance value at the sensing pad changes. A trigger signal is then sent to the speed measurement module through the capacitive trigger chip.

[0022] In conjunction with the first aspect, in one embodiment, the charging and discharging module includes a capacitor, a charging circuit, and a discharging circuit. The charging circuit is used to start charging the capacitor after receiving a setting parameter and a charging signal from the control module, and is also used to return a charging completion signal to the control module after charging is completed. The discharging circuit is used to control the capacitor to discharge after receiving a discharging signal from the control module, and the light-emitting module emits light.

[0023] In conjunction with the first aspect, in one embodiment, the charging circuit is further configured to:

[0024] When charging is abnormal, an overload alarm signal is returned to the control module;

[0025] When the charging voltage is higher than the target voltage, an overvoltage alarm signal is returned to the control module;

[0026] When the temperature of the charging circuit is higher than the preset charging circuit temperature, an over-temperature alarm signal is returned to the control module.

[0027] When the charging current exceeds the preset charging current, an overload alarm signal is returned to the control module.

[0028] In conjunction with the first aspect, in one embodiment, the speed measurement module includes an accelerometer and a microprocessor. The accelerometer senses the acceleration changes of the handle in different directions in three-dimensional coordinates and transmits them to the microprocessor. The microprocessor periodically samples the data from the accelerometer and calculates the lateral and longitudinal movement speeds of the handle.

[0029] Secondly, embodiments of this application provide an energy output method for an intense pulsed light therapy device as described in any of the above embodiments, comprising the following steps:

[0030] S1. The control module receives the set parameters and controls the charging and discharging module to charge according to the set parameters; after charging is completed and the switch module receives the open signal, the charging and discharging module discharges, causing the light-emitting module to emit preset energy light.

[0031] S2. The speed measurement module senses and calculates the lateral and longitudinal movement speeds of the handle and transmits them to the control module. At the same time, the charging and discharging module charges.

[0032] S3. The control module calculates the moving distance of the handle in the moving direction. When the moving distance meets the preset condition of the light-emitting module in the moving direction and the switch module is given an open signal, the control module controls the charging and discharging module to discharge, so that the light-emitting module emits light of preset energy. The control module then resets the moving distance to zero.

[0033] Repeat steps S2 and S3 until the control module receives a shutdown signal from the switch module, or the switch module's on time reaches a preset time threshold, at which point the charging and discharging module stops charging and discharging.

[0034] In conjunction with the second aspect, in one implementation, step S3 above includes:

[0035] The control module calculates the lateral and longitudinal movement distances based on the lateral and longitudinal movement speeds of the handle, and then calculates the angle between the movement direction and the coordinate axis containing the lateral movement distance using inverse trigonometric functions to obtain the movement direction.

[0036] The light-emitting module includes a light-guiding crystal, and the control module adjusts the movement of the handle by a distance S in the direction of movement. n and the dimension D of the optical guide crystal in this direction of movement. n Perform calculations when S is satisfied. n =D n When the value is ×(1-N), the control module determines to trigger light emission, where N is the overlap density, i.e., the percentage of the overlapping area in two adjacent light emission events of the light guide crystal relative to the area of ​​a single light emission event. In conjunction with the first aspect, in one embodiment,

[0037] The beneficial effects of the technical solutions provided in this application include:

[0038] The speed measuring module calculates the lateral and longitudinal movement speeds of the handle, and the control module calculates the movement distance of the handle in the movement direction accordingly. When the movement distance meets the preset conditions of the light-emitting module in the movement direction, and the switch module receives the opening signal, the charging and discharging module discharges to make the light-emitting module emit light of preset energy.

[0039] This application links the emission of light to the movement speed of the handle. Under the condition of equal distance light emission, the slower the handle moves, the longer the light emission interval, and the faster the handle moves, the shorter the light emission interval. The operator does not need to adapt to the light emission frequency of the instrument and thus adjust the speed of the handle. Instead, the speed of light energy output can be adjusted according to the operator's habit of using the handle. The light energy received per unit area is relatively uniform, avoiding the occurrence of areas without therapeutic effect or local burns caused by repeated output.

[0040] In the direction of movement, the percentage of the overlapping area in two adjacent light outputs of the light guide crystal to the single light output area increases sequentially from 50%, 66%, 75%, to 80%, allowing the specified light energy to be output to the designated area without relying on the operator's clinical experience.

[0041] When the handle stops moving due to subjective or objective reasons, the moving distance no longer changes. Even if the switch module is in the on state, the charging and discharging module will not discharge, and the light-emitting module will stop emitting light, thus avoiding thermal damage caused by improper operation. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the stamping mode output light pulse in the background technology;

[0043] Figure 2 This is a schematic diagram of the traditional sliding mode output optical pulse in the background technology;

[0044] Figure 3 This is a schematic block diagram of an intense pulsed light therapy device according to an embodiment of this application;

[0045] Figure 4 This is a schematic block diagram of another embodiment of the intense pulsed light therapy device of this application;

[0046] Figure 5 This is a schematic cross-sectional view of the handle in an embodiment of this application;

[0047] Figure 6 This is a schematic diagram of the coordinate system where the handle is located in an embodiment of this application;

[0048] Figure 7 This is a schematic diagram of the handle movement path in an embodiment of this application;

[0049] Figure 8 This is a schematic diagram of the uniformly overlapping irradiation area in an embodiment of this application;

[0050] Figure 9 This is a schematic diagram illustrating the relationship between the optical pulse waveform and velocity and distance in an embodiment of this application;

[0051] Figure 10 This is a schematic diagram of the irradiated area when the overlap is 0 in the embodiments of this application.

[0052] In the picture:

[0053] 1. Handle; 11. Light-emitting module; 111. Light-emitting body; 112. Light guide crystal; 113. Cooling element; 12. Speed ​​measuring module; 13. Skin sensing circuit; 14. Bluetooth module; 15. Light emission window;

[0054] 2. Main unit; 21. Charging and discharging module; 211. Charging circuit; 212. Capacitor; 213. Discharging circuit; 22. Switching module; 23. Control module; 24. Touch screen. Detailed Implementation

[0055] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0056] First, some of the technical terms used in this application will be explained to help those skilled in the art understand this application.

[0057] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0058] In one aspect, embodiments of this application provide an intense pulsed light therapy device.

[0059] In one embodiment, reference is made to Figure 3 , Figure 3 This is a schematic diagram of the first embodiment of the intense pulsed light therapy device of this application. Figure 1 As shown, the intense pulsed light therapy device includes a main unit 2 and a handpiece 1. After the operator turns on the main unit 2, they hold the handpiece 1 to operate it.

[0060] Specifically, the handle 1 includes a light-emitting module 11 and a speed-measuring module 12. The light-emitting module 11 is used to emit light; the speed-measuring module 12 is used to sense and calculate the lateral and longitudinal movement speeds of the handle 1.

[0061] The host 2 includes a control module 23, a charging / discharging module 21 and a switching module 22, which are respectively connected to the control module 23.

[0062] The charging and discharging module 21 is used to enable the light-emitting module 11 to emit strong pulse light through charging and discharging.

[0063] The switch module 22 is used to send an on or off signal to the control module 23.

[0064] The control module 23 is used to receive setting parameters from the operator and control the charging and discharging module 21 to charge and discharge according to the setting parameters; it is also used to calculate the moving distance of the handle 1 in the moving direction according to the moving speed of the speed measuring module 12. When the moving distance meets the preset condition of the light-emitting module 11 in the moving direction and the switch module 22 is received as the opening signal, the control module 23 controls the charging and discharging module 21 to discharge, so that the light-emitting module 11 emits light of preset energy.

[0065] In this embodiment, the speed measuring module 12 calculates the lateral and longitudinal movement speeds of the handle 1. Based on this, the control module 23 calculates the movement distance of the handle 1 in the movement direction (actual movement direction). When the movement distance meets the preset conditions of the light-emitting module 11 in that movement direction, and an activation signal is received, the charging / discharging module 21 discharges, causing the light-emitting module 11 to emit light of a preset energy. By linking the light emission with the movement speed of the handle 1, the operator does not need to adapt to the instrument's light emission frequency and adjust the speed of the handle 1. The light energy received per unit area is relatively uniform, and the system can output a specified light energy irradiation area within a designated region without relying on the operator's clinical experience. This solves the technical problems in related technologies, such as the inability to accurately control the output of a specified light energy in a designated area and the uneven local distribution of light energy.

[0066] Furthermore, in one embodiment, the speed measurement module 12 is typically implemented as a circuit, including an accelerometer and a microprocessor. The accelerometer senses the acceleration changes of the handle 1 in different directions in three-dimensional coordinates and transmits this information to the microprocessor. The microprocessor periodically samples the data from the accelerometer and calculates the lateral and longitudinal movement speeds of the handle 1. In this embodiment, the sampling period is 1 ms. Figure 6 As shown, in this embodiment, the three-dimensional coordinates are set with the handle 1 in use. When the handle 1 is in use, the speed measuring module 12 takes its position as the origin of the three-dimensional coordinate system, the horizontal movement direction of the handle 1 is the X-axis, the vertical movement direction is the Y-axis, and the vertical movement direction is the Z-axis.

[0067] The aforementioned switch module 22 is implemented in the form of a foot switch. When the foot switch is closed, the switch module 22 sends an open signal to the control module 23; when the foot switch is open, the switch module 22 sends an close signal to the control module 23.

[0068] Furthermore, in one embodiment, such as Figure 5 As shown, the light-emitting module 11 includes a light-emitting element 111, a light-guiding crystal 112, and a cooling element 113. The light-emitting element 111 is disposed inside the handle 1 and is used for emitting light; preferably, the light-emitting element 111 is a xenon lamp. The light-guiding crystal 112 is disposed inside the handle 1, and its bottom surface is located at the light-emitting window 15 of the handle 1 (e.g., Figure 6 As shown, Figure 5(Not shown in the image) The bottom surface of the light guide crystal 112 is located in the same plane as the light emission window 15, and the side surface of the light guide crystal 112 is covered within the light emission window 15. The light guide crystal 112 is used to uniformly guide the light emitted by the light emitter 111 out of the handle 1. A cooling pad 113 is installed on the light guide crystal 112 to dissipate heat from the light guide crystal 112 and prevent the light guide crystal 112 from overheating and burning the skin during the light emission process. In this embodiment, the cooling pad 113 is attached to the side surface of the light guide crystal 112, the length of the light guide crystal 112 is greater than the length of the cooling pad 113, and the lower part of the side surface of the light guide crystal 112 is located outside the cooling pad 113.

[0069] Furthermore, in one embodiment, such as Figure 4 and Figure 5 The diagram shows a second embodiment of an intense pulsed light (IPL) therapy device. Based on the previous embodiment, the handle 1 further includes a skin sensing circuit 13, which is connected to the speed measurement module 12. The skin sensing circuit 13 determines whether the light guide crystal 112 is in contact with the skin and sends a trigger signal to the speed measurement module 12 when it is in contact. Since the size of the light guide crystal 112 is known, and the position of the skin sensing circuit 13 is also known, the contact between the light guide crystal 112 and the skin can be calculated and estimated based on the distance between the skin sensing circuit 13 and the skin.

[0070] Furthermore, the skin sensing circuit 13 may include a sensing capacitor at the sensing pad and a capacitive trigger chip (not shown). When the skin sensing circuit 13 approaches the skin to a preset distance, it can be considered that the light guide crystal 112 is in contact with the skin. The sensing capacitance value at the sensing pad will change, and a trigger signal will be sent to the speed measurement module 12 through the capacitive trigger chip. In this embodiment, the trigger signal is high level. When the skin sensing circuit 13 and the skin do not reach the preset distance, the capacitive trigger chip sends a low level signal to the speed measurement module 12, and the speed measurement module 12 does not process it. The skin sensing circuit 13 can prevent light energy from leaking out from the gap between the skin and the light guide crystal 112 during operation, affecting the treatment effect, and can also avoid light leakage from adversely affecting the surrounding environment. Therefore, when calculating the moving direction and moving distance of the handle 1, the up and down movement of the handle 1 does not need to be considered, because when the skin sensing circuit 13 and the skin do not reach the preset distance, the control module 23 controls the charging and discharging module 21 to stop the light emission module 11 from emitting light.

[0071] Furthermore, in one embodiment, the handle 1 also includes a Bluetooth module 14, which is used to realize data transmission between the control module 23 and the speed measurement module 12.

[0072] Furthermore, in one embodiment, the charging and discharging module 21 of the host 2 includes a charging circuit 211, a capacitor 212, and a discharging circuit 213. The charging circuit 211 is used to start charging the capacitor 212 after receiving the set parameters and the charging signal from the control module 23, and is also used to return a charging completion signal to the control module 23 after the charging is completed. The discharging circuit 213 is used to control the capacitor 212 to discharge after receiving the discharging signal from the control module 23, so that the light-emitting element 111 of the light-emitting module 11 emits light.

[0073] Furthermore, in one embodiment, the host 2 also includes a touch screen 24 for human-computer interaction. The host 2 receives the setting parameters input by the operator through the touch screen 24, and can also display the data of the control module 23 through the touch screen 24.

[0074] In the above embodiments, the set parameters include: single optical pulse energy E, maximum continuous working time T, and overlap density N, wherein the overlap density N is the percentage of the overlapping area in two adjacent light outputs of the light guide crystal to the area of ​​a single light output.

[0075] The preset condition for the light-emitting module 11 in this moving direction is: S n =D n ×(1-N), where S n D is the distance D moves in this direction of movement. n denoted as the dimension of the light guide crystal 112 in the direction of movement, and N represents the overlap density.

[0076] Secondly, this application also provides an energy output method based on the above-mentioned intense pulsed light therapy device, comprising the following steps:

[0077] S1. The control module 23 receives the set parameters and controls the charging and discharging module 21 to charge according to the set parameters. After charging is completed and the switch module 22 is received as the start signal, the control module 23 controls the charging and discharging module 21 to discharge, so that the light-emitting module 11 emits preset energy light.

[0078] S2, the speed measurement module 12 senses and calculates the lateral and longitudinal movement speeds of the handle 1 and transmits them to the control module 23, while the charging and discharging module 21 charges.

[0079] S3. The control module 23 calculates the moving distance of the handle 1 in the moving direction based on the horizontal and vertical moving speeds. When the moving distance meets the preset conditions of the light-emitting module 11 in the moving direction and receives the opening signal from the switch module 22, it controls the charging and discharging module 21 to discharge, so that the light-emitting module 11 emits light of preset energy. The control module 23 then resets the moving distance to zero.

[0080] Repeat steps S2 and S3 until the control module 23 receives a shutdown signal from the switch module 22, or the opening time T of the switch module 22 reaches a preset time threshold, at which point the charging and discharging module 21 stops charging.

[0081] In this embodiment, when the handle 1 stops moving due to subjective or objective reasons, the moving distance no longer changes. Even if the foot switch is closed, the light energy output is no longer triggered. This application can prevent thermal damage caused by improper operation. In addition, when the start time T of the internal timer of the control module 23 has elapsed, it means that the current round of light energy output has ended. If the switch module 22 does not turn on again after a preset time (e.g., 1 minute) in the preparation state, the charging and discharging will stop and the preparation state will be exited. Compared with the traditional stamping mode and sliding mode, which can only stop the light output and manually exit the preparation state by releasing the foot switch, this embodiment can play a protective role.

[0082] In the above method, the charge / discharge module 21 charges through the charging circuit 211 and discharges through the discharging circuit 213. After receiving the charging enable signal and target voltage signal from the control module 23, the charging circuit 211 begins charging the capacitor 212. Once the target voltage is reached, it returns a charging completion signal to the control module 23. The target voltage is calculated by the control module 23 based on the operating parameters selected by the operator.

[0083] Furthermore, when a charging abnormality occurs, such as a short circuit in capacitor 212, the charging circuit 211 will return an overload alarm signal to the control module 23; when the charging voltage is higher than the target voltage, the charging circuit 211 will return an overvoltage alarm signal to the control module 23; when the temperature of the charging circuit 211 is higher than the preset charging circuit temperature, the charging circuit 211 will return an overtemperature alarm signal to the control module 23; when the charging current is greater than the preset charging current, the charging circuit 211 will return an overload alarm signal to the control module 23.

[0084] After the discharge circuit 213 of the charging / discharging module 21 receives the discharge pulse signal from the control module 23, it begins to control the capacitor 212 to discharge. Furthermore, when a discharge pulse width greater than the set pulse width is detected, an overcurrent alarm signal is returned. The discharge energy is mainly determined by the discharge voltage U of the light emitter 111 (a xenon lamp in this embodiment), the capacitance C of the capacitor 212, and the xenon lamp's light emission pulse width Wd. The light emission energy E and the voltage have the following relationship:

[0085] E = 0.5 × C × (U1) 2 -U2 2 )×η, where U1 is the light emission start voltage, U2 is the light emission end voltage after Wd, and η is the photoelectric conversion efficiency.

[0086] like Figure 6As shown, when handle 1 is in use, the speed measuring module 12 uses its current position as the origin of a three-dimensional coordinate system. The horizontal movement direction of handle 1 is the X-axis, the vertical movement direction is the Y-axis, and the vertical movement direction is the Z-axis, thus sensing changes in acceleration in different directions. Since the negative acceleration in the Y-axis direction is usually the gravitational acceleration g, the module mainly processes changes in acceleration in the X-axis and Z-axis directions during operation. When switch module 22 is closed, speed measuring module 12 detects 10 consecutive positive or negative acceleration changes on the X-axis or Z-axis, and the microprocessor of speed measuring module 12 begins to calculate the speed. Since speed is the integral of acceleration over time, i.e., v(t)=∫a(t)dt, where v is speed and a is acceleration, the speed V after the first 10 samples on the X-axis is calculated. x1 It can be transformed into the following formula:

[0087] V x1 = a1×t + a2×t + ... + a 10 ×t;

[0088] Average acceleration a 平1 =V x1 / 10t, where t is the sampling period. And so on, after the second 10 samples, 10 acceleration data points yield the velocity V. x2 The formula is: V x2 =V x1 +a 11 ×t+a 12 ×t+.....+a 20 ×t.

[0089] The control module 23 of host 2 moves according to the speed V x1 Calculate the distance moved in one velocity sampling period, since distance is the integral of velocity over time s(t) = ∫v(t)dt, where s is the distance. Therefore, the distance moved in the first 10 sampling periods is S. x1 =V x1 ×10t / 2; Second return speed V x2 The distance S moved afterward x2 for:

[0090] S x2 =S x1 +V x1 ×10t+a 平2 ×100t 2 / 2;

[0091] And so on, the distance S moved after the third speed return x3 =S x2 +V x2 ×10t+a 平3 ×100t 2 / 2.

[0092] like Figure 7 The image shows the movement path of handle 1. Similarly, the movement speed V along the Z-axis can be calculated. zn and the distance S zn Control module 23 according to S xn and S zn Using the inverse trigonometric function θ = arctan(S zn / S xn Calculate the angle θ between the direction of movement and the X-axis. In this direction, the handle 1 moves a distance S. n =S xn / cosθ, and then calculate the dimension D of the light guide crystal 112 in the moving direction based on the dimension D of the light guide crystal 112 in the X-axis direction. n =D / cosθ, when the moving distance satisfies the requirement that the light-emitting module 11 moves in the direction of S n =D n When the value is ×(1-N), the control module 23 determines that light is emitted.

[0093] Furthermore, in step S1 of the energy output method of the above-mentioned intense pulsed light therapy device, the operator can set parameters through the touch screen 24.

[0094] After the aforementioned intense pulsed light therapy device is powered on, in standby mode, the control module 23 periodically receives speed data transmitted by the speed measurement module 12 via the Bluetooth module 14. When the intense pulsed light therapy device enters the preparation state, the control module 23 controls the charging circuit 211 to charge the capacitor 212, and the touch screen 24 displays the charging status. When the capacitor 212 is charged to the rated voltage, the touch screen 24 displays that charging is complete. At the same time, after the skin sensing circuit 13 detects that the skin has come into contact with the light guide crystal 112, the control module 23 checks whether it has received an on signal from the switch module 22. If so, the control module 23 sends a corresponding electrical signal to the discharge circuit 213, and then discharges the xenon lamp through the capacitor 212, releasing the first light pulse with a microsecond-level pulse width Wd. At the same time, the control module 23 starts the timing.

[0095] In step S2, the speed measurement module 12 senses and calculates the moving speed V along the X-axis. xn and the Z-axis moving speed V zn It is transmitted to the control module 23 via Bluetooth module 14.

[0096] In step S3, the control module 23 determines the value of the received V. xn and V zn The distance S moved along the X-axis was calculated respectively. xn The distance S moved along the Z-axis zn Using the inverse trigonometric function θ = arctan(S zn / Sxn Calculate the angle θ between the handle 1 and the X-axis in the direction of movement, and the distance S moved in the direction of angle θ. n =S xn / cosθ, and then calculate the dimension D of the light guide crystal 112 in the moving direction based on the dimension D of the light guide crystal 112 in the X-axis direction. n = D / cosθ. Once S is reached n =D n When the value is ×(1-N), the control module 23 controls the charging and discharging module 21 to discharge, causing the xenon lamp to emit light with a preset energy E, where N is the overlap density, i.e., the percentage of the overlapping area in two adjacent light emission events of the light guide crystal 112 to the area of ​​a single light emission event. Then, the control module 23 resets the moving distance S to zero. n Recalculate the movement distance in the direction of movement and wait for the next trigger. Repeat steps S2 and S3 to achieve the effect of uniformly outputting light energy at equal distances.

[0097] like Figure 8 As shown, when the included angle θ = 0, the relationship between the moving distance S and the overlap density N can be derived: S = D × (1-N), where D is the width of the light-emitting window 15 (which is also the dimension of the bottom surface of the light guide crystal 112 in the X-axis direction). Compared with the traditional sliding mode, when N = 50%, 66%, 75%, and 80%, the overlap area of ​​adjacent light-emitting times of the light guide crystal 112 increases sequentially. This eliminates the need to rely on the operator's clinical experience, allowing the output of a specified light energy irradiation area within a designated region, thus avoiding situations where the light energy received per unit area is insufficient or excessive.

[0098] During the time interval between two consecutive light energy outputs, the charging circuit 211 continuously charges the capacitor 212 to its rated voltage until the control module 23 detects the shutdown signal of the switch module 22, at which point distance detection also stops. If the handle 1 stops moving due to subjective or objective reasons, no light energy will be output to prevent thermal damage from improper operation. Alternatively, when the on-time T of the switch module 22 reaches a preset time threshold, the current round of light energy output ends, serving a protective function. If the switch module 22 does not reopen within one minute, charging and discharging stops and the system exits the preparation state. If the switch module 22 reopens within one minute, the next round of light energy output begins. The relationship between the light pulse waveform and speed and distance during the output process is as follows: Figure 9 As shown.

[0099] like Figure 9 As shown, under the condition of equidistant light emission, the slower the movement speed of handle 1, the longer the light emission time interval; conversely, the faster the movement speed of handle 1, the shorter the light emission time interval. Therefore, the operator does not need to adapt to the instrument's light emission frequency by adjusting the speed of moving handle 1, but can adjust the light output speed according to the operator's habits in using handle 1.

[0100] Furthermore, the intense pulsed light therapy device in this application is also compatible with the stamping mode. When N=0, the light energy overlap area is 0. At this time, the output mode is equivalent to a seamless and uniform stamping output. However, it omits the step of judging the position of each light output with the naked eye and then moving the handle to output light energy in the traditional mode. Therefore, the treatment speed is faster than the traditional stamping mode, which greatly improves the treatment efficiency.

[0101] like Figure 10 As shown, taking D=2cm as an example, for an area with an irradiation length L=8cm and a width A, the stamping-style output requires pressing the handle onto the skin, stepping on the foot switch, outputting light energy, and then moving the handle 2cm, repeating the above actions four times to complete the process, which takes at least 15-20 seconds. However, using the sliding mode operation in this application, it is only necessary to step on the foot switch and then move the handle 1 horizontally 8cm, which takes only 1-2 seconds.

[0102] Since the energy output per unit area is controllable, the upper limit of the single light output energy in this embodiment can be set to be relatively high. Compared with the traditional sliding mode, which requires repeated sliding to accumulate energy, the number of light outputs for treating the same area is less and the time is shorter.

[0103] It should be noted that the sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0104] The terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus. The terms "first," "second," and "third," etc., are used to distinguish different objects, etc., and do not indicate a sequence, nor do they limit "first," "second," and "third" to different types.

[0105] In the description of the embodiments of this application, terms such as "exemplary," "for example," or "for instance" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplary," "for example," or "for instance" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary," "for example," or "for instance" is intended to present the relevant concepts in a specific manner. Furthermore, in the description of the embodiments of this application, "a plurality of" refers to two or more.

[0106] In some processes described in the embodiments of this application, multiple operations or steps are included in a specific order. However, it should be understood that these operations or steps may not be executed in the order they appear in the embodiments of this application, or they may be executed in parallel. The sequence number of the operation is only used to distinguish different operations, and the sequence number itself does not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed sequentially or in parallel, and these operations or steps may be combined.

[0107] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device to execute the methods described in the various embodiments of this application.

[0108] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A high-intensity pulsed light therapy device, comprising a main unit (2) and a handpiece (1), characterized in that, The handle (1) includes: Light-emitting module (11), which is used to emit light; Speed ​​measurement module (12), which is used to sense and calculate the lateral and longitudinal movement speeds of the handle (1); The host includes: A charge / discharge module (21) is used to enable the light-emitting module (11) to emit strong pulsed light through charging and discharging; Switch module (22) is used to send an on or off signal to control module (23); The control module (23) is used to receive setting parameters and control the charging and discharging module to charge and discharge according to the setting parameters; it is also used to calculate the moving distance of the handle (1) in the moving direction according to the moving speed of the speed measuring module (12), and when the moving distance meets the preset condition of the light-emitting module (11) in the moving direction, and after receiving the opening signal of the switch module (22), it controls the charging and discharging module to discharge, so that the light-emitting module (11) emits light of preset energy; The light-emitting module (11) includes: A light-emitting element (111) is disposed inside the handle (1) and is used to emit light; A light guide crystal (112) is disposed in the light-emitting window (15) of the handle (1) for uniformly guiding the light emitted by the light-emitting body (111); The preset condition for the light-emitting module (11) in this moving direction is S. n =D n ×(1-N), where S n D is the distance D moves in the direction of movement of the handle (1). n N is the dimension of the light guide crystal (112) in the moving direction, and N is the overlap density, which is the percentage of the overlapping area in two adjacent light outputs of the light guide crystal (112) to the area of ​​a single light output.

2. The intense pulsed light therapy device as described in claim 1, characterized in that, The light-emitting module (11) includes: A cooling chip (113) is mounted on the light guide crystal (112) for dissipating heat from the light guide crystal (112).

3. The intense pulsed light therapy device as described in claim 1, characterized in that: The handle (1) also includes a skin sensing circuit (13), which is used to determine whether the light guide crystal (112) is in contact with the skin and to send a trigger signal to the speed measuring module (12) when it is in contact with the skin.

4. The intense pulsed light therapy device as described in claim 3, characterized in that: The skin sensing circuit (13) includes a sensing capacitor at the sensing pad and a capacitive trigger chip. When the skin sensing circuit (13) approaches the skin to a preset distance, it is considered that the light guide crystal (112) is in contact with the skin. The sensing capacitance value at the sensing pad changes, and a trigger signal is sent to the speed measurement module (12) through the capacitive trigger chip.

5. The intense pulsed light therapy device as described in claim 1, characterized in that: The charging and discharging module includes a capacitor (212), a charging circuit (211), and a discharging circuit (213). The charging circuit (211) is used to start charging the capacitor (212) after receiving the set parameters and the charging signal from the control module (23), and is also used to return a charging completion signal to the control module (23) after the charging is completed. The discharging circuit (213) is used to control the capacitor (212) to discharge after receiving the discharge signal from the control module (23), and the light-emitting module (11) emits light.

6. The intense pulsed light therapy device as described in claim 5, characterized in that, The charging circuit (211) is also used for: When charging is abnormal, an overload alarm signal is returned to the control module (23); When the charging voltage is higher than the target voltage, an overvoltage alarm signal is returned to the control module (23); When the temperature of the charging circuit (211) is higher than the preset charging circuit temperature, an over-temperature alarm signal is returned to the control module (23); When the charging current exceeds the preset charging current, an overload alarm signal is returned to the control module (23).

7. The intense pulsed light therapy device as described in claim 1, characterized in that: The speed measurement module (12) includes an accelerometer and a microprocessor. The accelerometer senses the acceleration changes of the handle (1) in different directions in three-dimensional coordinates and transmits them to the microprocessor. The microprocessor periodically samples the data from the accelerometer and calculates the lateral and longitudinal movement speeds of the handle (1).

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