CN-122005072-A - Output energy control method and system for intense pulse light therapeutic instrument

CN122005072ACN 122005072 ACN122005072 ACN 122005072ACN-122005072-A

Abstract

The invention discloses a method and a system for controlling the output energy of a strong pulse light therapeutic instrument, in particular to the technical field of medical beauty equipment, wherein the method comprises the steps of establishing a tissue optical characteristic baseline through multi-wavelength detection light and setting initial parameters in a personalized way; the method comprises the steps of monitoring the dynamic change of tissue optical characteristics in real time in treatment, adaptively adjusting thermal relaxation time based on preamble pulse energy and temperature change rate, calculating energy adjustment factors according to optical parameter changes, intelligently optimizing pulse energy density, interval and waveform parameters, establishing a pulse sequence cooperative control model, and realizing multiple safety protection through thermal injury probability integration and spectral characteristic monitoring. The invention solves the technical problems of unstable energy output, dependence on manual experience and lack of real-time dynamic adjustment capability of the traditional equipment, realizes accurate and personalized energy control, and remarkably improves the safety and effectiveness of treatment.

Inventors

ZHOU XIANGJIE
LUO HONGBO
LIU LINGBIN
ZHAO XIONG
WU TIANHONG

Assignees

深圳市美莱雅智能科技有限公司

Dates

Publication Date: 20260512
Application Date: 20260409

Claims (9)

1. The method for controlling the output energy of the intense pulse light therapeutic apparatus is characterized by comprising the following steps: Measuring optical characteristics of tissues before treatment, establishing a baseline configuration file, and setting personalized initial treatment parameters by combining patient information; Step two, dynamic monitoring and modeling, namely monitoring optical characteristics and temperature changes of tissues in real time in the treatment process, dynamically adjusting thermal relaxation time and updating an optical parameter matrix; Step three, intelligent energy optimization, namely calculating an energy adjustment factor based on optical parameter change, dynamically optimizing pulse energy parameters and customizing pulse waveforms; and fourthly, cooperative control and safety monitoring, namely establishing a pulse sequence cooperative control model, monitoring the risk of thermal injury in real time and stopping treatment when the safety threshold is reached.
2. The method for controlling output energy of a high-pulse light therapeutic apparatus according to claim 1, the method is characterized in that in the first step: Tissue reflection spectrum data are acquired through the multi-wavelength detection light source, and the absorption coefficient, the scattering coefficient and the effective penetration depth of the tissue are calculated based on a diffusion approximation theory to form a baseline configuration file.
3. The method for controlling output energy of a high-pulse light therapeutic apparatus according to claim 1, the method is characterized in that in the first step: the initial energy density and pulse width are adjusted by preset rules according to the skin type of the patient and the treatment site, wherein the skin type sets adjustment coefficients based on Fitzpatrick grading, and the treatment site sets sensitivity coefficients based on sensitivity.
4. The method for controlling output energy of a high pulse light therapeutic apparatus according to claim 1, wherein in the second step: the thermal relaxation time is dynamically calculated based on the actual output energy of the previous pulse and the real-time tissue temperature rate of change, ensuring an automatic extension of the waiting time at high energy output or rapid temperature rise.
5. The method for controlling output energy of a high-pulse light therapeutic apparatus according to claim 1, the method is characterized in that in the third step: The energy adjustment factor is calculated based on a weighted sum of the absorption coefficient variation, the scattering coefficient variation, and the effective penetration depth, and automatically adjusts the energy density, the pulse interval, and the pulse width of the subsequent pulses according to the numerical interval of the factor.
6. The method for controlling output energy of a high-pulse light therapeutic apparatus according to claim 5, the method is characterized in that in the third step: The pulse shape is dynamically selected according to tissue optical characteristics, square wave pulses are used when tissue moisture content is significantly increased, decreasing pulses are used when hemoglobin absorption is dominant, and pulse width and attenuation factors are tailored based on effective penetration depth and hemoglobin absorption coefficient, respectively.
7. The method for controlling output energy of a high pulse light therapeutic apparatus according to claim 1, wherein in the fourth step: And establishing a transfer function of the pulse sequence by a recursive least square method, and predicting and outputting the optimal energy value of the next pulse by taking the actual energy, the tissue response parameter, the energy adjustment factor and the tissue temperature of the precursor pulse as inputs.
8. The method for controlling output energy of a high-pulse light therapeutic apparatus according to claim 7, the method is characterized in that in the fourth step: and calculating the thermal injury probability of the tissue in real time, monitoring carbonization characteristics of the reflection spectrum and the saturation degree of the treatment effect, and automatically stopping treatment when the thermal injury probability exceeds a threshold value, the carbonization characteristics appear or the treatment response is saturated.
9. A system for applying the method for controlling output energy of the intense pulse light therapeutic apparatus according to any one of claims 1 to 8, comprising the following modules: The multispectral detection and baseline establishment module is used for tissue optical characteristic measurement and personalized parameter initialization before treatment; The real-time optical characteristic dynamic monitoring module is used for monitoring optical characteristics and temperature changes of tissues in the treatment process in real time; the intelligent energy optimization control module is used for dynamically optimizing pulse energy parameters and customizing pulse waveforms; the multi-pulse cooperative and safety monitoring module is used for cooperative control of pulse sequences and treatment safety monitoring; and the data management and report generation module is used for storing, analyzing and generating treatment data.

Description

Output energy control method and system for intense pulse light therapeutic instrument Technical Field The invention relates to the technical field of medical beauty equipment, in particular to a method and a system for controlling output energy of a strong pulse light therapeutic instrument. Background The strong pulse light (IPL) therapeutic apparatus is used as a non-invasive medical and cosmetic device, and is widely applied to the fields of skin dehairing, vasculopathy treatment, acne diminishing inflammation, skin rejuvenation and the like. The therapeutic principle is based on selective photothermal effect, and the therapeutic purpose is achieved by absorbing light energy of specific wave band by target chromophore (such as melanin and hemoglobin) in tissue to generate thermal effect. Most intense pulse light devices on the current market adopt an open loop energy control mode, namely energy parameters are preset before treatment according to physician experience or basic information of patients, and the real-time response capability to the dynamic change of tissues is lacking in the treatment process. The existing energy control technology mainly has the following limitations that firstly, setting of treatment parameters is seriously dependent on experience of operators, and accurate individuation treatment is difficult to realize. The skin types, treatment positions and tissue states of different patients have obvious differences, and the fixed parameter setting cannot adapt to the differences, so that burn caused by too high energy or insufficient energy can easily influence the curative effect. Second, conventional devices lack an effective real-time monitoring mechanism that is unable to sense dynamic changes in tissue optical properties (e.g., absorption coefficient, scattering coefficient) during treatment. With the accumulation of photo-thermal effects, the scattering and absorption properties of the tissue change significantly, and the existing devices cannot dynamically adjust the output energy accordingly, resulting in a mismatch between the subsequent pulse energy and the actual requirements. In addition, the existing safety control mechanism is mostly based on a simple temperature threshold value or fixed time sequence control, an energy coupling model between pulses cannot be established, and heat accumulation damage is difficult to effectively prevent. Although improvements have emerged in recent years, such as temperature feedback-based control or impedance measurement-based adjustment, these approaches have significant drawbacks. Temperature feedback control generally responds with hysteresis, which makes it difficult to prevent transient overheating, while impedance measurements reflect tissue electrical properties, which are insensitive to changes in optical parameters. Therefore, the field needs a strong pulse light therapeutic apparatus output energy control method capable of sensing tissue optical characteristic change in real time, dynamically optimizing energy output and realizing accurate safety monitoring, so as to solve the technical problems of unstable energy output, insufficient therapeutic safety, poor individual adaptability and the like in the prior art. Disclosure of Invention In order to overcome the above-mentioned drawbacks of the prior art, embodiments of the present invention provide a method and system for controlling output energy of a high-pulse light therapeutic apparatus. In order to achieve the above purpose, the present invention provides the following technical solutions: the method for controlling the output energy of the intense pulse light therapeutic instrument comprises the following steps: Measuring optical characteristics of tissues before treatment, establishing a baseline configuration file, and setting personalized initial treatment parameters by combining patient information; Step two, dynamic monitoring and modeling, namely monitoring optical characteristics and temperature changes of tissues in real time in the treatment process, dynamically adjusting thermal relaxation time and updating an optical parameter matrix; Step three, intelligent energy optimization, namely calculating an energy adjustment factor based on optical parameter change, dynamically optimizing pulse energy parameters and customizing pulse waveforms; and fourthly, cooperative control and safety monitoring, namely establishing a pulse sequence cooperative control model, monitoring the risk of thermal injury in real time and stopping treatment when the safety threshold is reached. Specifically, in the first step, tissue reflection spectrum data is collected through a multi-wavelength detection light source, and the absorption coefficient, the scattering coefficient and the effective penetration depth of the tissue are calculated based on a diffusion approximation theory to form a baseline configuration file. Specifically, in the first step, the initial energy density and the