A method for detecting skin scar condition and evaluating repair effect

Abstract

This invention discloses a method for detecting the state of skin scars and an evaluation method for their repair effects. The method for detecting skin scars combines medical skin tissue with electrical properties, utilizing the impedance characteristics of human skin and the advantages of a precision LCR (Liquid Crystal Resonance) instrument. By reading the resistance and capacitance values ​​of scarred and normal skin using LCR, it achieves high-precision measurement of skin resistance and capacitance. By comparing the average impedance values ​​of scarred and normal skin, the state of the scarred skin is obtained, thus assisting doctors in judging the scar's growth status and developing the optimal treatment plan. The method for evaluating the repair effect of skin scars uses LCR to read the resistance and capacitance values ​​of scarred and normal skin before and after repair. By comparing the average impedance values ​​of scarred and normal skin before and after repair, the repair effect of the scarred skin is obtained, thus assessing the degree of recovery of the scarred skin after cosmetic repair, thereby assisting doctors in timely adjusting and improving scar repair methods.

Description

Technical Field

[0001] This invention belongs to the field of biomedical and electrical measurement, and more specifically, relates to a method for detecting the state of skin scars and a method for evaluating the repair effect. Background Technology

[0002] Scars are a general term for the changes in appearance and histopathology of skin tissue after trauma, and are a product of wound repair. Skin scars can be classified into conventional scars, hypertrophic scars, keloids, and atrophic scars. Conventional scars are the result of normal skin repair after trauma, generally without functional impairment, and gradually fade into normal skin tissue over time. Hypertrophic scars and keloids are products of excessive tissue repair, histologically termed fibroblast proliferation and excessive collagen production, often appearing significantly higher than the surrounding normal skin tissue, and the lesion area usually exceeds the original wound area. Atrophic scars, on the other hand, are the result of insufficient tissue repair, appearing as scars lower than the surrounding normal skin tissue. Apart from conventional scars, the other three types of scars are all called abnormal scars. Abnormal scars not only affect appearance but also carry the risk of cancerous transformation; therefore, timely and effective detection and treatment of scars are necessary. Currently, clinical detection of scars can be divided into two categories: physicochemical analysis of biopsies and visual examination of the wound by clinicians. Biopsy is invasive and can cause further harm to patients, while visual examination of the wound cannot determine the internal tissue growth, which may delay the best treatment time. Summary of the Invention

[0003] In view of the above-mentioned defects or improvement needs of the existing technology, the present invention provides a method for detecting the state of skin scars and a method for evaluating the repair effect, thereby solving the technical problem that existing scar skin detection methods cannot simultaneously achieve non-invasiveness and high precision in obtaining the internal tissue growth of scars.

[0004] To achieve the above objectives, according to a first aspect of the present invention, a method for detecting scarred skin condition based on electrical properties is provided, comprising:

[0005] S1, read the resistance and capacitance of the patient's normal skin and scarred skin K times using an LCR meter, and then apply the formula... Calculate the mean impedance values ​​of the normal skin and the scarred skin respectively;

[0006] The LCR meter is connected to electrode plates I and II via wires. Electrode plates I and II are spaced at a preset distance and are respectively attached to the surface of normal skin or scarred skin. R is resistance, C is capacitance, ω is the angular frequency of the LCR meter, and j is the imaginary part.

[0007] S2, the state of the scarred skin is obtained based on the absolute value of the difference between the average impedance of the normal skin and the average impedance of the scarred skin.

[0008] Preferably, multiple numerical ranges are preset to correspond to different state levels of scarred skin. The state level of the scarred skin is determined based on the numerical range in which the absolute value of the difference between the average impedance of normal skin and the average impedance of scarred skin lies.

[0009] Preferably, the electrode pads I and II have the same shape and area; and the area of ​​the scarred area of ​​the scarred skin is larger than the area of ​​the electrode pads.

[0010] Preferably, before step S1, the method further includes: applying a conductive interface material to the skin to be measured to increase the skin's conductivity;

[0011] After attaching the electrode pads I and II to the surface of the skin to be measured, fix the electrode pads I and II in place using medical tape.

[0012] According to a second aspect of the present invention, a method for evaluating the skin scar repair effect based on electrical properties is provided, comprising:

[0013] S1, read the resistance and capacitance of the skin to be measured K times using an LCR meter, and then apply the formula... Calculate the mean impedance of the skin to be measured;

[0014] The skin to be measured includes: the patient's normal skin, scarred skin before repair, and scarred skin after repair; the LCR meter is connected to electrode pads I and II respectively via wires, the electrode pads I and II are spaced at a preset distance, and are respectively attached to the surface of normal skin, scarred skin before repair, or scarred skin after repair; R is resistance, C is capacitance, ω is the angular frequency of the LCR meter, and j is the imaginary part;

[0015] S2, calculate the difference A between the mean impedance of the repaired scarred skin and the normal skin, and the difference B between the mean impedance of the repaired scarred skin and the normal skin, respectively.

[0016] S3, determine whether A is less than B. If yes, the repair effect is good; otherwise, the repair effect is poor.

[0017] Preferably, the repair is a natural repair or a therapeutic repair.

[0018] Preferably, the electrode pads I and II have the same shape and area; and the area of ​​the scarred area of ​​the scarred skin is larger than the area of ​​the electrode pads.

[0019] Preferably, before step S1, the method further includes: applying a conductive interface material to the skin to be measured to increase the skin's conductivity;

[0020] After attaching the electrode pads I and II to the surface of the skin to be measured, fix the electrode pads I and II in place using medical tape.

[0021] According to a third aspect of the present invention, a skin scar condition detection device based on electrical properties is provided, comprising:

[0022] The first processing module is used to read the resistance and capacitance of normal skin and scarred skin of the patient K times respectively using an LCR meter, and then calculate the resistance and capacitance according to the formula. Calculate the mean impedance values ​​of the normal skin and the scarred skin respectively;

[0023] The LCR meter is connected to electrode plates I and II via wires. Electrode plates I and II are spaced at a preset distance and are respectively attached to the surface of normal skin or scarred skin. R is resistance, C is capacitance, ω is the angular frequency of the LCR meter, and j is the imaginary part.

[0024] The second processing module is used to obtain the state of the scarred skin based on the absolute value of the difference between the average impedance of the normal skin and the average impedance of the scarred skin.

[0025] According to a fourth aspect of the present invention, a skin scar repair effect evaluation device based on electrical properties is provided, comprising:

[0026] The first processing module is used to read the resistance and capacitance of the skin to be measured K times using an LCR meter, and then process the data according to the formula... Calculate the mean impedance of the skin to be measured;

[0027] The skin to be measured includes: the patient's normal skin, scarred skin before repair, and scarred skin after repair; the LCR meter is connected to electrode pads I and II respectively via wires, the electrode pads I and II are spaced at a preset distance, and are respectively attached to the surface of normal skin, scarred skin before repair, or scarred skin after repair; R is resistance, C is capacitance, ω is the angular frequency of the LCR meter, and j is an imaginary number;

[0028] The second processing module is used to calculate the difference A between the average impedance of the repaired scarred skin and the normal skin, and the difference B between the average impedance of the repaired scarred skin and the normal skin, respectively.

[0029] The third processing module is used to determine whether A is less than B. If so, the repair effect is good; otherwise, the repair effect is poor.

[0030] In summary, compared with the prior art, the above-described technical solutions conceived by this invention can achieve the following beneficial effects:

[0031] 1. The skin scar condition detection method based on electrical properties provided by this invention combines medical skin tissue with electrical properties. It utilizes the impedance characteristics of human skin and the advantages of precision LCR electrical instruments to read the resistance and capacitance values ​​of scarred skin and normal skin through LCR, thereby achieving high-precision measurement of skin resistance and capacitance. By comparing the average impedance values ​​of scarred skin and normal skin, the condition of scarred skin can be obtained, thereby assisting doctors in judging the scar growth status and developing the best treatment plan.

[0032] 2. The method for evaluating the effect of skin scar repair based on electrical properties provided by this invention combines medical skin tissue with electrical properties. It utilizes the impedance characteristics of human skin and the advantages of precision LCR electrical instruments to read the resistance and capacitance values ​​of scarred skin and normal skin before and after repair using LCR, thereby achieving high-precision measurement of skin resistance and capacitance. By comparing the average impedance values ​​of scarred skin and normal skin before and after repair, the repair effect of scarred skin can be obtained, thus obtaining the degree of recovery of scarred skin after cosmetic repair, and assisting doctors to adjust and improve scar repair methods in a timely manner.

[0033] 3. The method provided by this invention has the advantages of being non-destructive, rapid, and highly accurate compared to existing scar detection methods. It can avoid physical damage to patients and help doctors adjust and improve scar repair methods in a timely manner, and has broad application prospects. Attached Figure Description

[0034] Figure 1 This is one of the flowcharts of the skin scar condition detection method based on electrical properties provided in the embodiments of the present invention;

[0035] Figure 2 This is the second flowchart of the skin scar condition detection method based on electrical properties provided in the embodiments of the present invention;

[0036] Figure 3 This is a schematic diagram illustrating the connection method between the electrode pad and normal skin, scarred skin, and LCR meter provided in an embodiment of the present invention;

[0037] Figure 4 In the figures (a) and (b), respectively, the resistance measurement data of scarred skin and normal skin obtained by the skin scar state detection method based on electrical characteristics provided in the embodiments of the present invention are scatter plots of the resistance measurement data of scarred skin and normal skin.

[0038] In all the accompanying drawings, the same reference numerals are used to denote the same elements or structures, wherein:

[0039] 1-Human skin, 2-Skin scar area, 3-Medical tape, 4-Electrode pad, 5-Wire, 6-LCR meter. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0041] Since Luigi Galvani's discovery of bioelectricity in 1780 through his electrostatic experiments on dead frogs, the concept of bioelectricity has become increasingly rich, opening up entirely new avenues for medical diagnosis. With the development of electronic information science and technology, more and more medical diagnostics have achieved rapid progress thanks to electronic technology. Bioelectrical impedance is one of the indicators reflecting the electrical characteristics of a living organism. By measuring the bioelectrical impedance of a tissue, it can be used to assist doctors in quickly determining the physiological and pathological state of an organism. The formation of skin scars involves a change in the amount of collagen and collagen fibers, a process that causes their condition to differ from normal skin.

[0042] Studies have shown that collagen in scars is primarily negatively charged, and changes in its quantity alter the distribution of charge on the skin surface, leading to changes in the skin's capacitance. Excessive synthesis of collagen fibers can intertwine into large, interconnected bundles, facilitating the passage of external current and potentially causing changes in the resistance of scarred skin, thus altering its electrical properties. However, currently, effective electrical measurement methods are lacking for the diagnosis of skin scars. Therefore, this invention achieves non-destructive detection of scar growth status by measuring changes in resistance and capacitance within scar tissue.

[0043] This invention provides a method for detecting the state of skin scars based on electrical properties, such as... Figure 1 As shown, it includes:

[0044] S1, read the resistance and capacitance of the patient's normal skin and scarred skin K times using an LCR meter, and then apply the formula... Calculate the mean impedance values ​​of the normal skin and the scarred skin respectively;

[0045] The LCR meter is connected to electrode plates I and II via wires. Electrode plates I and II are spaced at a preset distance and are respectively attached to the surface of normal skin or scarred skin. R is resistance, C is capacitance, ω is the angular frequency of the LCR meter, and j is the imaginary part.

[0046] Furthermore, the electrode pads I and II have the same shape and area; and the area of ​​the scarred region of the scarred skin is larger than the area of ​​the electrode pads.

[0047] Furthermore, prior to step S1, the method further includes: applying a conductive interface material to the skin to be measured to increase the skin's conductivity.

[0048] After attaching the electrode pads I and II to the surface of the skin to be measured, fix the electrode pads I and II in place using medical tape.

[0049] Specifically, S1 includes:

[0050] S11, the skin of the scar to be tested is fixed to the electrode pad with medical tape;

[0051] S12, connect the electrode plate to a high-precision LCR electrical instrument via a wire;

[0052] S13, Set the LCR table working mode;

[0053] S14, taking K=50 as an example, read the skin resistance R of the scar 50 times. s With capacitor C s The measured value;

[0054] S15, Secure the intact skin around the scarred skin to the electrode pads using medical tape, and read the skin resistance R of normal skin 50 times. norm With capacitor C norm The measured value;

[0055] S15, calculate the mean value Z of the skin impedance of the scar tissue. s and the mean skin impedance Z norm .

[0056] Furthermore, in step S11, fixing the scarred skin to be tested and the surrounding intact skin to the electrode pad using medical tape includes the following steps:

[0057] S111 First, a conductive interface material is applied to the scarred skin and the surrounding intact skin to increase the conductivity between the electrode pads and the skin;

[0058] S112. Apply the electrode pads of uniform specifications to the scarred skin and the surrounding intact skin, respectively. The scar area should be larger than the electrode pad area.

[0059] The electrode sheet used in S113 is two coplanar circular copper metal sheets with a spacing of 10 mm and a diameter of 2 mm.

[0060] S114 uses medical tape to fix the electrode pads in place;

[0061] Furthermore, in step S13, setting the LCR table working mode includes the following steps:

[0062] S131 sets the LCR table working mode to Cs-Rs function mode;

[0063] S132 sets the LCR meter operating frequency to 100Hz;

[0064] S133 sets the LCR meter excitation voltage amplitude to 1V;

[0065] Furthermore, in step S15, the mean value Z of the skin impedance of the scar is calculated respectively. s and the mean skin impedance Z norm Includes the following steps:

[0066] S151 calculates the mean impedance of normal skin.

[0067]

[0068] S152 Calculates the mean skin impedance of scarred skin.

[0069]

[0070] Furthermore, the derivation of the above formula for calculating the average skin impedance is as follows: Considering that the resistance and capacitance in the skin are in parallel, according to Kirchhoff's current law, the current relationship at the node can be listed as I = I R +I c And because U = U R =U C According to Ohm's law, the following can be listed: After sorting, we can obtain Where z R =R, Z is the equivalent impedance. Substituting into the equation and rearranging, we get...

[0071] S2, the state of the scarred skin is obtained based on the absolute value of the difference between the average impedance of the normal skin and the average impedance of the scarred skin.

[0072] Specifically, comparing the mean Z-skin impedance of scarred skin s Compared with the mean Z of normal skin impedance norm The differences can be used to assess the recovery status of scarred skin.

[0073] Furthermore, multiple numerical ranges are pre-defined to correspond to different state levels of scarred skin. The state level of the scarred skin is determined based on the numerical range in which the absolute value of the difference between the mean impedance of the normal skin and the mean impedance of the scarred skin lies.

[0074] It is understandable that the average impedance Z of scarred skin s and the average impedance Z of normal skin norm The smaller the difference between them is, the closer the state of the scarred skin is to that of the normal skin, that is, the better the state of the scarred skin.

[0075] For example, three numerical ranges are preset in advance, namely the first, second, and third numerical ranges [A, B], [C, D], [E, F], where A < B < C < D < F < E; if the absolute value of the difference between the average impedance of the normal skin and the average impedance of the scarred skin falls within the first numerical range, the state of the scarred skin is good; if the absolute value of the difference between the average impedance of the normal skin and the average impedance of the scarred skin falls within the second numerical range, the state of the scarred skin is average; if the absolute value of the difference between the average impedance of the normal skin and the average impedance of the scarred skin falls within the third numerical range, the state of the scarred skin is poor.

[0076] The larger the absolute value of the difference between the average impedances of the scarred skin and the normal skin is, the greater the difference between the scarred skin and the normal skin; the smaller the absolute value of the difference between the average impedances of the scarred skin and the normal skin is, the smaller the difference between the scarred skin and the normal skin. Therefore, by presetting multiple numerical ranges, the difference between the scarred skin and the normal skin can be classified into grades. Correspondingly, the doctor can obtain the state of the scarred skin according to the above measurement results, so as to formulate a corresponding treatment plan. <​​​​​​​​​​​​​​​​​​​​​​​​​​

[0080] The specific processing procedure is as follows:

[0081] Step 1. Take the scarred skin to be tested and the surrounding intact skin as samples, and fix them to the electrode pads with medical tape.

[0082] For this embodiment, the fixing method steps are as follows:

[0083] ① First, apply a conductive interface material to the scarred skin and the surrounding intact skin to increase the conductivity between the electrode pads and the skin;

[0084] ② Apply the electrode pads of uniform size to the scarred skin and the surrounding intact skin respectively, with the scarred area being larger than the electrode pad area;

[0085] ③ Select an appropriate size electrode sheet. The electrode sheet used is two coplanar circular copper metal sheets with a spacing of 10 mm and a diameter of 2 mm.

[0086] ④ Use medical tape to fix the electrode pads in place.

[0087] Step 2. Connect the electrode plates to a high-precision LCR electrical instrument via wires.

[0088] Step 3. Set the LCR table working mode

[0089] For this embodiment, the steps for setting the working mode are as follows:

[0090] ① Set the LCR table working mode to Cs-Rs function mode;

[0091] ② Set the LCR meter's operating frequency to 100Hz;

[0092] ③ Set the excitation voltage amplitude of the LCR meter to 1V.

[0093] Step 4. Read the skin electrical resistance R of the scar 50 times. s With capacitor C s and normal skin resistance R norm With capacitor C norm Measured values

[0094] Step 5. Process the measurement values ​​of scarred skin and normal skin read in Step 4 separately, and calculate the mean impedance Z of the scarred skin separately. s and the mean skin impedance Z norm

[0095] For this embodiment, the calculation method steps are as follows:

[0096] ① Calculate the mean normal skin impedance

[0097]

[0098] ② Calculate the mean value of skin impedance of scar tissue

[0099]

[0100] Step 6 compares the mean normal skin impedance value calculated in Step 5 with the mean scar skin impedance value, and compares the mean scar skin impedance value Z. s Compared with the mean Z of normal skin impedance norm The differences can be used to assess the recovery status of scarred skin.

[0101] Figure 4 (a) and (b) in the figure are scatter plots of electrical resistance measurement data and reactance measurement data of scarred skin and normal skin, respectively, obtained by the skin scar state detection method based on electrical characteristics provided in the embodiments of the present invention; Z s and Z norm These are the mean impedance values ​​for scarred skin and normal skin, respectively. It can be seen that there are significant differences in the measured resistance and reactance values ​​between scarred skin and normal skin. Furthermore, the mean impedance Z of scarred skin was calculated. s Compared with the mean Z of normal skin impedance norm The values ​​differ significantly. This difference can ideally reflect the differences between scarred skin and normal skin, as well as the current condition of scarred skin.

[0102] Impedance calculation values ​​for normal skin and scarred skin:

[0103] Z norm =169319-30.73869824843783i

[0104] Z s =526899-611.4895980546225i

[0105] This invention provides a method for evaluating the skin scar repair effect based on electrical properties, comprising:

[0106] S1, read the resistance and capacitance of the skin to be measured K times using an LCR meter, and then apply the formula... Calculate the mean impedance of the skin to be measured;

[0107] The skin to be measured includes: the patient's normal skin, scarred skin before repair, and scarred skin after repair; the LCR meter is connected to electrode pads I and II respectively via wires, electrode pad I is attached to the surface of normal skin, and electrode pad II is connected to the scarred skin before repair or the scarred skin after repair; R is resistance, C is capacitance, ω is angular frequency, and j is the imaginary part;

[0108] S2, calculate the difference A between the mean impedance of the repaired scarred skin and the normal skin, and the difference B between the mean impedance of the repaired scarred skin and the normal skin, respectively.

[0109] S3, determine whether A is less than B. If yes, the repair effect is good; otherwise, the repair effect is poor.

[0110] Furthermore, the repair is either natural repair or therapeutic repair.

[0111] Furthermore, the electrode pads I and II have the same shape and area; and the area of ​​the scarred region of the scarred skin is larger than the area of ​​the electrode pads.

[0112] Furthermore, prior to step S1, the method further includes: applying a conductive interface material to the skin to be measured to increase the skin's conductivity.

[0113] After attaching the electrode pads I and II to the surface of the skin to be measured, fix the electrode pads I and II in place using medical tape.

[0114] Specifically, the method for evaluating the effect of skin scar repair based on electrical properties provided in this embodiment of the invention is similar to the above-mentioned method for detecting the state of skin scars based on electrical properties. The only difference is that this evaluation method measures the scar skin before and after repair. By comparing the difference A between the average impedance of the repaired scar skin and normal skin and the difference B between the average impedance of the repaired scar skin and normal skin, the quality of the repair results of the scar skin during the repair process can be evaluated, which facilitates doctors to formulate or adjust the scar repair plan in a timely manner.

[0115] In summary, the method provided by this invention applies an electrical impedance model to the precise detection of scarred skin, rather than relying on visual assessment. It extracts skin impedance as a discriminative feature by utilizing the differences in collagen fibers and their quantity between normal skin and scar tissue. Compared with other electrical characteristic analyses, the electrical property analysis method for scars provided by this invention has a higher recognition rate and diagnostic capability, providing a theoretical basis and implementation method for rapid diagnosis of skin scars. This helps doctors quickly assess the condition of scarred skin and thus adopt appropriate treatment methods, assisting doctors in carrying out scar repair work. Furthermore, it allows for non-destructive testing and evaluation by comparing the impedance of scarred skin with that of normal skin after cosmetic repair, which has significant implications and broad application prospects.

[0116] This invention provides a skin scar condition detection device based on electrical properties, comprising:

[0117] The first processing module is used to read the resistance and capacitance of the skin to be measured K times using an LCR meter, and then process the data according to the formula... Calculate the mean impedance values ​​of the normal skin and the scarred skin respectively;

[0118] The skin to be measured includes the patient's normal skin and scarred skin; the LCR meter is connected to electrode pads I and II via wires, and electrode pads I and II are respectively attached to the surface of normal skin and scarred skin; R is resistance, C is capacitance, ω is angular frequency, and j is the imaginary part;

[0119] The second processing module is used to obtain the state of the scarred skin based on the absolute value of the difference between the average impedance of the normal skin and the average impedance of the scarred skin.

[0120] This invention provides a device for evaluating the skin scar repair effect based on electrical properties, comprising:

[0121] The first processing module is used to read the resistance and capacitance of the skin to be measured K times using an LCR meter, and then process the data according to the formula... Calculate the mean impedance of the skin to be measured;

[0122] The skin to be measured includes: the patient's normal skin, scarred skin before repair, and scarred skin after repair; the LCR meter is connected to electrode pads I and II respectively via wires, electrode pad I is attached to the surface of normal skin, and electrode pad II is connected to the scarred skin before repair or the scarred skin after repair; R is resistance, C is capacitance, ω is angular frequency, and j is the imaginary part;

[0123] The second processing module is used to calculate the difference A between the average impedance of the repaired scarred skin and the normal skin, and the difference B between the average impedance of the repaired scarred skin and the normal skin, respectively.

[0124] The third processing module is used to determine whether A is less than B. If so, the repair effect is good; otherwise, the repair effect is poor.

[0125] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A skin scar condition detection device based on electrical properties, characterized in that, include: The first processing module is used to read data from the LCR table. K The resistance and capacitance of the patient's normal and scarred skin were measured according to the formula. Calculate the mean impedance values ​​of the normal skin and the scarred skin respectively; The LCR meter is connected to electrode pads I and II via wires. Electrode pads I and II are spaced at a preset distance from each other and are respectively attached to the surface of normal skin or scarred skin. R For resistance, C For capacitors, The angular frequency of the LCR meter. j It is the imaginary part; The second processing module is used to obtain the state of the scarred skin based on the absolute value of the difference between the average impedance of the normal skin and the average impedance of the scarred skin.

2. The apparatus as claimed in claim 1, characterized in that, The second processing module pre-sets multiple numerical ranges corresponding to different state levels of scarred skin. Based on the numerical range of the absolute value of the difference between the average impedance of normal skin and the average impedance of scarred skin, the state level of the scarred skin is determined.

3. The apparatus as described in claim 1, characterized in that, The electrode pads I and II have the same shape and area; and the area of ​​the scarred area of ​​the scarred skin is larger than the area of ​​the electrode pads.

4. The apparatus as claimed in claim 1, characterized in that, Before the first processing module calculates the average impedance of the normal skin and the scarred skin, the method further includes: applying a conductive interface material to the skin to be measured to increase the skin's conductivity. After attaching the electrode pads I and II to the surface of the skin to be measured, fix the electrode pads I and II in place using medical tape.

5. A device for evaluating the effect of skin scar repair based on electrical properties, characterized in that, include: The first processing module is used to read data from the LCR table. K The resistance and capacitance of the skin to be measured are then determined according to the formula. Calculate the mean impedance of the skin to be measured; The skin to be measured includes: the patient's normal skin, scarred skin before repair, and scarred skin after repair; the LCR meter is connected to electrode pads I and II respectively via wires, the electrode pads I and II are spaced at a preset distance, and are respectively attached to the surface of normal skin, scarred skin before repair, or scarred skin after repair; R For resistance, C For capacitors, The angular frequency of the LCR meter. j It is an imaginary number; The second processing module is used to calculate the difference A between the average impedance of the repaired scarred skin and the normal skin, and the difference B between the average impedance of the repaired scarred skin and the normal skin, respectively. The third processing module is used to determine whether A is less than B. If so, the repair effect is good; otherwise, the repair effect is poor.

6. The apparatus as claimed in claim 5, characterized in that, The repair is either natural repair or therapeutic repair.

7. The apparatus as claimed in claim 5, characterized in that, The electrode pads I and II have the same shape and area; and the area of ​​the scarred area of ​​the scarred skin is larger than the area of ​​the electrode pads.

8. The apparatus as claimed in claim 5, characterized in that, Before the first processing module calculates the average impedance of the skin to be measured, the method further includes: applying a conductive interface material to the skin to be measured to increase the skin's conductivity. After attaching the electrode pads I and II to the surface of the skin to be measured, fix the electrode pads I and II in place using medical tape.

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