Wearable drainage device used after breast surgery and using method of wearable drainage device

Abstract

The invention relates to a mammary gland postoperative wearable drainage apparatus and a use method thereof, and belongs to the technical field of medical instruments, the mammary gland postoperative wearable drainage apparatus comprises a vest and a waist magic tape bandage, an equipment placement belt is fixedly mounted at the top of the inner wall of the vest, and miniature negative pressure drainage apparatuses are fixedly mounted at the bottom of the vest close to the edges of four corners. According to the light infiltration detection device, the light infiltration technology can facilitate feeding and discharging of the waist hook-and-loop fastener bandage, the stability of the feeding and discharging process can be improved through feeding and discharging operation conducted through the motor, feeding and discharging are conducted only at the through hole, and therefore the light infiltration detection technology can be rapidly conducted on the waist hook-and-loop fastener bandage; in addition, the oxygen-free environment can be prevented from being rapidly damaged in the process of taking and placing the waist hook-and-loop fastener bandage, energy consumption and material waste are reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a wearable drainage device for breast surgery and a method for using the same. Background Art

[0002] Breast surgery will partially or completely remove breast glandular, adipose tissue and axillary lymphatic adipose tissue. There will be bleeding and exudation in these surgical wound areas. If not drained out of the body in time, it is easy to form fluid accumulation locally in the surgical area, affecting the healing of the tissue in the surgical area and inducing infections, etc. Therefore, a corresponding drainage device is needed to collect and process the subcutaneous bleeding and exudation in the surgical area. If drainage is required but not placed, it may lead to fluid accumulation or hematoma, causing pain or infection, prolonging the healing time, and increasing the possibility of late puncture and fluid aspiration.

[0003] The existing wearable drainage devices for breast surgery have the following problems in actual use: 1. Mainly rely on medical staff to manually measure the drainage volume and observe the properties of the drainage fluid (such as color, viscosity), which not only increases the work burden but also may cause delayed treatment or premature tube removal due to human error; 2. The traditional negative pressure drainage ball has a large volume, affecting the early postoperative activities of patients, especially for patients undergoing breast reconstruction who need to carry the drainage device for a long time. To facilitate wearing and use, and to facilitate real-time monitoring of the drainage volume and the properties of the fluid (such as bloody, chylous) and automatic warning, a wearable drainage device for breast surgery and a method for using the same are proposed. The drainage device can be worn on the body through a body vest for use, facilitating early activities and use by patients. An optical sensor is provided to analyze the color and turbidity of the fluid and identify bloody fluid, and a liquid level sensor is provided to detect the drainage volume, so as to reduce human error and help doctors more accurately judge the timing of tube removal. Summary of the Invention

[0004] The present invention provides a wearable drainage device for breast surgery and a method for using the same, which solves the problems raised in the above-mentioned background art, is convenient for fitting and wearing on the patient's body, and can identify the color and turbidity of the drainage fluid and detect the drainage volume, thus facilitating doctors to more accurately judge the timing of tube removal and replace the drainage fluid storage box.

[0005] The solution of the present invention to the above technical problems is as follows: A wearable drainage device after breast surgery, comprising a vest, a device placement belt, a micro negative pressure drainage device, an auxiliary detection box, a drainage fluid storage box, a first drainage tube, a second drainage tube, a third drainage tube, a liquid level sensor, and an optical sensor. The vest is provided with a waist magic tape strap, and the device placement belt is adhesively bonded to the waist magic tape strap through a magic tape. The micro negative pressure drainage device is provided with a micro negative pressure pump and a battery box, and the micro negative pressure pump and the battery box are electrically connected. The micro negative pressure pump is threadedly communicated with the auxiliary detection box through the first drainage tube. The auxiliary detection box is equipped with a negative pressure sensor. The auxiliary detection box is communicated with the drainage fluid storage box through the second drainage tube. The drainage fluid storage box is threadedly communicated with the third drainage tube. The third drainage tube is equipped with a flexible fitting base. The liquid level sensor and the optical sensor are threadedly connected to the drainage fluid storage box. An internal partition plate is installed in the drainage fluid storage box. The device placement belt is provided with placement bags corresponding to the micro negative pressure drainage device, the auxiliary detection box, and the drainage fluid storage box. The device placement belt is provided with a magic tape positioning belt. The optical sensor includes a light source module and a photodetector;

[0006] The usage method includes the following steps:

[0007] S1: The micro negative pressure pump of the micro negative pressure drainage device can be communicated with the auxiliary detection box through the first drainage tube. The auxiliary detection box is communicated with the drainage fluid storage box through the second drainage tube. The hydrophobic filter and the liquid level sensor can be loaded at the drainage fluid storage box. The micro negative pressure drainage device, the auxiliary detection box, and the drainage fluid storage box are respectively loaded in the placement bags of the device placement belt and can be positioned through the magic tape positioning belt, so that the micro negative pressure drainage device, the auxiliary detection box, and the drainage fluid storage box can be placed at the device placement belt and worn on the body through the vest, thus facilitating use;

[0008] S2: The flexible fitting base fits the skin, and the third drainage tube is inserted into the wound for drainage. Starting the micro negative pressure drainage device can extract the air in the auxiliary detection box to form a negative pressure. The negative pressure sensor can monitor the negative pressure to prevent the pressure from being too large or too small, and thus adjust. The hydrophobic filter of the second drainage tube can prevent the drainage fluid from being pumped into the auxiliary detection box to cause pollution. The drainage fluid can be pumped into the drainage fluid storage box through the third drainage tube. An internal partition plate is provided in the drainage fluid storage box, and the internal partition plate can prevent the drainage fluid from accidentally touching the detection end of the liquid level sensor during slight initial activities to cause false alarms. The liquid level sensor alarms after detecting the liquid level for five seconds, prompting to replace the drainage fluid storage box;

[0009] S3: The optical sensor can monitor the drainage fluid stored in the drainage fluid storage box. First, color feature extraction is performed, which includes data acquisition and color space conversion. Then, supervised learning is carried out through a color classification model. Through the turbidity analysis algorithm, calibration, and verification, the detection of bloody fluid and the identification of chylous fluid can be achieved, enabling real-time early warning.

[0010] Based on the above technical solutions, the present invention can be further improved as follows.

[0011] Furthermore, a hydrophobic filter is provided on the second drainage tube, and the hydrophobic filter of the second drainage tube can prevent the drainage fluid from being pumped into the auxiliary detection box and causing contamination.

[0012] Furthermore, the flexible fitting base is made of medical-grade silicone material, with a silver ion antibacterial coating on its surface. It is designed to fit the curvature of the breast postoperative wound surface. The flexible fitting base can be attached to the wound surface through a gauze.

[0013] Furthermore, the built-in partition plate is set as a conical structure, and the built-in partition plate is provided with liquid leakage holes, which can prevent false alarms caused by the drainage fluid accidentally touching the detection end of the liquid level sensor during slight initial activities.

[0014] Furthermore, the light source module of the optical sensor adopts a multi-wavelength LED array, such as red / green / blue / infrared, covering the visible light to near-infrared band of 450 - 950 nm, supporting time-division driving, and sequentially lighting different wavelength light sources to reduce crosstalk.

[0015] Furthermore, the photodetector is configured with a dual-receiving mode: the transmitted light detector is directly opposite to the light source to measure the light intensity attenuation for turbidity analysis, and the scattered light detector is arranged laterally at 90° or 135° to measure the scattered light intensity.

[0016] Furthermore, a one-way valve is provided on the third drainage tube, thereby preventing the backflow of the drainage fluid.

[0017] The beneficial effects of the present invention are as follows: The present invention provides a breast postoperative wearable drainage device and its usage method, having the following advantages:

[0018] 1. The micro negative pressure drainage device, the auxiliary detection box, and the drainage fluid storage box are respectively loaded in the placement bags of the device placement belt and can be positioned through the magic tape positioning belt, so that the micro negative pressure drainage device, the auxiliary detection box, and the drainage fluid storage box can be placed at the device placement belt and worn on the body through a vest, thus facilitating use;

[0019] 2. The negative pressure sensor can monitor the negative pressure to prevent excessive or insufficient pressure, and thus adjust. The hydrophobic filter of the second drainage tube can prevent the drainage fluid from being drawn into the auxiliary detection box to cause contamination. The drainage fluid can be drawn into the drainage fluid storage box through the third drainage tube. An internal partition is provided in the drainage fluid storage box, and the internal partition can prevent false alarms caused by the drainage fluid accidentally touching the detection end of the liquid level sensor during slight initial activities. After the liquid level sensor detects the liquid level for five seconds, a liquid level alarm is given to prompt to replace the drainage fluid storage box;

[0020] 3. The optical sensor can monitor the drainage fluid stored in the drainage fluid storage box. First, color feature extraction is performed, and color feature extraction includes data acquisition and color space conversion. Then, supervised learning is carried out through a color classification model, and blood-like fluid detection and chyle identification can be realized through a turbidity analysis algorithm, calibration and verification, so as to perform real-time early warning;

[0021] 4. Such a post-mastectomy wearable drainage device can be worn on the body through a body-hugging vest for use, which is convenient for patients to carry and use during early activities. It is provided with an optical sensor that can be used to analyze the color and turbidity of the liquid, identify blood-like fluid, and is provided with a liquid level sensor for detecting the drainage volume, so as to reduce human error and help doctors more accurately judge the timing of tube removal.

[0022] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly and implement it in accordance with the content of the specification, the following takes the preferred embodiments of the present invention and combines with the drawings to describe in detail as follows. The specific implementation manners of the present invention are given in detail by the following embodiments and their drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present invention, form a part of this application, and the schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0024] Figure 1 is a front view of a post-mastectomy wearable drainage device and its usage method provided by an embodiment of the present invention;

[0025] Figure 2 is a schematic structural diagram of an equipment placement belt in a post-mastectomy wearable drainage device and its usage method provided by an embodiment of the present invention.

[0026] In the drawings, the list of components represented by each reference numeral is as follows:

[0027] 1. Vest; 2. Waist Velcro strap; 3. Equipment placement strap; 4. Miniature negative pressure drainer; 5. Auxiliary detection box; 6. Drainage fluid storage box; 7. Miniature negative pressure pump; 8. Battery box; 9. First drainage tube; 10. Negative pressure sensor; 11. Second drainage tube; 12. Hydrophobic filter; 13. Third drainage tube; 14. Flexible fitting base; 15. Liquid level sensor; 16. Optical sensor; 17. Built-in partition; 18. Leakage hole; 19. Check valve; 20. Placement bag; 21. Velcro positioning strap. Detailed implementation mode

[0028] The following combines the attached Figure 1-2 The principles and features of the present invention will be described. The examples given are only used to explain the present invention and are not intended to limit the scope of the present invention. The present invention will be described more specifically by way of example in the following paragraphs with reference to the accompanying drawings. The advantages and features of the present invention will be clearer according to the following description and claims. It should be noted that the drawings are all in a very simplified form and use non-precise scales, only for the purpose of conveniently and clearly assisting in explaining the purpose of the embodiments of the present invention.

[0029] It should be noted that when a component is referred to as "fixed to" another component, it can be directly on the other component or there can also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "set on" another component, it can be directly set on the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0031] Such as Figure 1-2As shown in the figure, the present invention provides a wearable drainage device for after breast surgery, including a vest 1, a device placement belt 3, a micro negative pressure drainage device 4, an auxiliary detection box 5, a drainage fluid storage box 6, a first drainage tube 9, a second drainage tube 11, a third drainage tube 13, a liquid level sensor 15, and an optical sensor 16. It is characterized in that: the vest 1 is provided with a waist magic tape strap 2, the device placement belt 3 is adhesively bonded to the waist magic tape strap 2 through a magic tape, the micro negative pressure drainage device 4 is provided with a micro negative pressure pump 7 and a battery box 8, the micro negative pressure pump 7 and the battery box 8 are electrically connected, the micro negative pressure pump 7 is threadedly communicated with the auxiliary detection box 5 through the first drainage tube 9, the auxiliary detection box 5 is equipped with a negative pressure sensor 10, the auxiliary detection box 5 is communicated with the drainage fluid storage box 6 through the second drainage tube 11, the drainage fluid storage box 6 is threadedly communicated with the third drainage tube 13, the third drainage tube 13 is equipped with a flexible fitting base 14, the liquid level sensor 15 and the optical sensor 16 are threadedly connected to the drainage fluid storage box 6, an internal partition plate 17 is installed in the drainage fluid storage box 6, the device placement belt 3 is provided with placement bags 20 corresponding to the micro negative pressure drainage device 4, the auxiliary detection box 5, and the drainage fluid storage box 6, the device placement belt 3 is provided with a magic tape positioning belt 21, and the optical sensor 16 includes a light source module and a photodetector.

[0032] Preferably, the second drainage tube 11 is provided with a hydrophobic filter 12, and the hydrophobic filter 12 of the second drainage tube 11 can prevent the drainage fluid from being pumped into the auxiliary detection box 5 and causing contamination.

[0033] Preferably, the flexible fitting base 14 is made of medical-grade silicone material, with a silver ion antibacterial coating on the surface, designed to fit the curvature of the breast postoperative wound surface, and the flexible fitting base 14 can be attached to the wound surface through a gauze.

[0034] Preferably, the internal partition plate 17 is set as a conical structure, and the internal partition plate 17 is provided with liquid leakage holes 18, which can prevent the drainage fluid from accidentally touching the detection end of the liquid level sensor 15 during slight initial activities and causing false alarms.

[0035] Preferably, the light source module of the optical sensor 16 adopts a multi-wavelength LED array, such as red / green / blue / infrared, covering the visible light to near-infrared band of 450 - 950 nm, supporting time-division driving, and sequentially lighting different wavelength light sources to reduce crosstalk.

[0036] Preferably, the photodetector is configured with a dual-receiving mode: the transmitted light detector is directly opposite the light source to measure the light intensity attenuation for turbidity analysis, and the scattered light detector is arranged laterally at 90° or 135° to measure the scattered light intensity.

[0037] Preferably, the third drainage tube 13 is provided with a one-way valve 19, thereby preventing the drainage fluid from flowing back.

[0038] The specific working principle and usage method of the present invention are as follows:

[0039] S1: The micro negative pressure pump 7 of the micro negative pressure drainage device 4 can be connected to the auxiliary detection box 5 through the first drainage tube 9. The auxiliary detection box 5 is connected to the drainage fluid storage box 6 through the second drainage tube 11. The hydrophobic filter 12 and the liquid level sensor 15 can be installed at the drainage fluid storage box 6. The micro negative pressure drainage device 4, the auxiliary detection box 5, and the drainage fluid storage box 6 are respectively installed in the placement bag 20 of the device placement belt 3 and can be positioned through the magic tape positioning belt 21, so that the micro negative pressure drainage device 4, the auxiliary detection box 5, and the drainage fluid storage box 6 can be placed at the device placement belt 3 and worn on the body through the vest 1, thus facilitating use;

[0040] S2: The flexible fitting base 14 fits the skin and the third drainage tube 13 is inserted into the wound for drainage. Starting the micro negative pressure drainage device 4 can extract the air in the auxiliary detection box 5 to form a negative pressure. The negative pressure sensor 10 can monitor the negative pressure to prevent the pressure from being too large or too small and thus adjust. The hydrophobic filter 12 of the second drainage tube 11 can prevent the drainage fluid from being pumped into the auxiliary detection box 5 to cause pollution. The drainage fluid can be pumped into the drainage fluid storage box 6 through the third drainage tube 13. An internal partition plate 17 is provided in the drainage fluid storage box 6. The internal partition plate 17 can prevent the drainage fluid from accidentally touching the detection end of the liquid level sensor 15 during slight initial activities and causing false alarms. After the liquid level sensor 15 detects the liquid level for five seconds, a liquid level alarm is given to prompt to replace the drainage fluid storage box 6;

[0041] S3: The optical sensor 16 can monitor the drainage fluid stored in the drainage fluid storage box 6. First, color feature extraction is performed. Color feature extraction includes data acquisition and color space conversion. Then, supervised learning is carried out through a color classification model. Through a turbidity analysis algorithm, calibration, and verification, the detection of bloody fluid and the identification of chylous fluid can be achieved, so as to perform real-time early warning.

[0042] Drainage fluid color detection

[0043] 1. Color feature extraction

[0044] Data acquisition: The red R, 630nm, green G, 530nm, and blue B, 450nm LEDs are sequentially lit, and the transmitted light intensity I R 、I G 、I B ;

[0045]

[0046] where I reference is the reference light intensity of pure water or air, and I dark is the dark current when the light source is turned off;

[0047] Color space conversion:

[0048] Convert RGB values to HSL hue H, saturation S, lightness L, or the Lab color space to enhance color discrimination.

[0049] 2. Color classification model

[0050] Supervised learning classification:

[0051] Training dataset: Collect RGB spectral data of known liquids such as blood, serum, chyle, and pus.

[0052] Use a support vector machine (SVM) or random forest (RandomForest) for multi-classification, with the feature vector being [H, S, L] or the original RGB values.

[0053] Rule threshold method:

[0054] Blood: The intensity of the R channel is significantly higher as hemoglobin in blood absorbs green light;

[0055] Chyle: The transmittance of the B channel is low as lipid particles scatter short-wavelength light;

[0056] Purulent fluid: The G / B ratio is abnormal due to the influence of bacterial metabolites;

[0057] 3. Turbidity analysis algorithm based on light scattering and transmission

[0058] Turbidity calculation model

[0059] Modification of the Beer-Lambert law for the transmission light method:

[0060]

[0061] Where I T is the intensity of the transmitted light, I0 is the reference light intensity, applicable to low-turbidity liquids with NTU < 100;

[0062] Nephelometric principle for the scattered light method:

[0063]

[0064] Where I S is the intensity of the scattered light, I S0 is the intensity of the scattered light of pure water, and k is the calibration constant;

[0065] Multi-wavelength fusion algorithm

[0066] Turbidity compensation model:

[0067] Long wavelengths such as 850 nm infrared light are less affected by color and are preferred for high-precision turbidity calculation;

[0068] Short-wavelength blue light is sensitive to small particles and is used to detect the early formation of flocs.

[0069] Fusion formula:

[0070] Turbidity = α·Turbidity IR +β·Turbidity Blue

[0071] The coefficients α and β are calibrated through experiments;

[0072] 4. Algorithm implementation process

[0073] Signal preprocessing, denoising: Perform moving average filtering or wavelet denoising on the original light intensity signal; Temperature compensation: Correct the drift of LED luminous efficiency according to the temperature sensor data;

[0074] Real-time analysis process,

[0075] # Pseudo-code example def analyze_fluid():

[0076] # Data acquisition

[0077] raw_R = read_sensor('RED', samples = 10) # Average of 10 samples

[0078] raw_G = read_sensor('GREEN')

[0079] raw_B = read_sensor('BLUE')

[0080] raw_IR = read_sensor('INFRARED')

[0081] raw_scatter = read_scatter_sensor()

[0082] # Preprocessing

[0083] V_R = normalize(raw_R, reference_R, dark_current)

[0084] V_G = normalize(raw_G, reference_G, dark_current)

[0085] V_B = normalize(raw_B, reference_B, dark_current)

[0086] # Color classification

[0087] h, s, l = rgb_to_hsl(V_R, V_G, V_B)

[0088] color_class = svm_classifier.predict([[h, s, l]]) # Pre-trained SVM model

[0089] # Turbidity calculation

[0090] turbidity_IR = -np.log(V_IR)

[0091] turbidity_blue = (raw_scatter - scatter_baseline) / scatter_baseline

[0092] turbidity = 0.7 * turbidity_IR + 0.3 * turbidity_blue

[0093] # Anomaly detection

[0094] if color_class == 'BLOOD' and turbidity > threshold_blood:

[0095] trigger_alarm("High-risk bloody effusion")

[0096] return color_class, turbidity

[0097] 5. Detection of bloody fluid:

[0098] Features: Low absorption and high transmission in the R channel, H value biased towards 0° red, sudden increase in turbidity, response of the bloody fluid detection algorithm, marked as "active bleeding", trigger warning;

[0099] Differentiation of chylous fluid: Features: Significant decrease in transmittance in the B channel, lipid scattering, turbidity > 200NT Algorithm response: Prompt "Possible chyle leakage", recommend detecting triglyceride concentration;

[0100] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0101] The above are only the preferred embodiments of the present invention and do not impose any form of limitation on the present invention. Any ordinary technician in the industry can smoothly implement the present invention as shown in the accompanying drawings of the specification and described above. However, any minor changes, modifications, and equivalent variations made by those skilled in the art within the scope of the technical solution of the present invention by using the technical content disclosed above are equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications, and variations made to the above embodiments based on the essential technology of the present invention still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A wearable drainage device for postoperative breast surgery, comprising a vest (1), a device placement belt (3), a micro negative pressure drainage device (4), an auxiliary detection box (5), a drainage liquid storage box (6), a No. 1 drainage tube (9), a No. 2 drainage tube (11), a No. 3 drainage tube (13), a liquid level sensor (15) and an optical sensor (16), characterized in that: The vest (1) is provided with a waist Velcro strap (2), the device placement belt (3) is bonded to the waist Velcro strap (2) by Velcro, the micro negative pressure drain (4) is provided with a micro negative pressure pump (7) and a battery box (8), the micro negative pressure pump (7) and the battery box (8) are electrically connected, the micro negative pressure pump (7) is threadedly connected to the auxiliary detection box (5) through a No. 1 drainage tube (9), the auxiliary detection box (5) is installed with a negative pressure sensor (10), the auxiliary detection box (5) is connected to the drainage fluid storage box (6) through a No. 2 drainage tube (11), the drainage fluid storage box (6) is threadedly connected to the No. 3 drainage tube (13), the No. 3 drainage tube (13) is installed with a flexible fitting base (14), the liquid level sensor (15) and the optical sensor (16) are threadedly connected to the drainage liquid storage box (6), the drainage liquid storage box (6) is installed with a built-in partition plate (17), the device placement belt (3) is provided with a placement bag (20) corresponding to the micro negative pressure drainage device (4), the auxiliary detection box (5), and the drainage liquid storage box (6), the device placement belt (3) is provided with a Velcro positioning belt (21), and the optical sensor (16) includes a light source module and a photoelectric detector; The method of use includes the following steps: S1: The micro negative pressure pump (7) of the micro negative pressure drainage device (4) can be connected to the auxiliary detection box (5) through the No. 1 drainage tube (9), and the auxiliary detection box (5) can be connected to the drainage liquid storage box (6) through the No. 2 drainage tube (11). The optical sensor (16) and the liquid level sensor (15) can be loaded at the drainage liquid storage box (6). The micro negative pressure drainage device (4), the auxiliary detection box (5), and the drainage liquid storage box (6) are respectively loaded in the placement bag (20) of the device placement belt (3), and can be positioned by the Velcro positioning belt (21), so that the micro negative pressure drainage device (4), the auxiliary detection box (5), and the drainage liquid storage box (6) can be placed at the device placement belt (3) and worn on the body through the vest (1), so as to be convenient to use; S2: The flexible fitting base (14) fits the skin and the No. 3 drainage tube (13) is inserted into the wound for drainage. The micro negative pressure drainage device (4) is started to extract the air in the auxiliary detection box (5) to form negative pressure. The negative pressure sensor (10) can monitor the negative pressure to prevent the pressure from being too high or too low, thereby adjusting the pressure. The drainage fluid can be drawn into the drainage fluid storage box (6) through the No. 3 drainage tube (13). The liquid level sensor (15) detects the liquid level and issues a liquid level alarm five seconds later, prompting the replacement of the drainage fluid storage box (6); S3: The optical sensor (16) can monitor the drainage fluid stored in the drainage fluid storage box (6), first perform color feature extraction, which includes data collection and color space conversion, and then perform supervised learning through a color classification model. Through turbidity analysis algorithm, calibration and verification, bloody fluid detection and chylous fluid identification can be achieved, thereby providing real-time warning.

2. A wearable drainage device after breast surgery according to claim 1, characterized in that: The No. 2 drainage pipe (11) is provided with a hydrophobic filter (12).

3. A wearable drainage device after breast surgery according to claim 1, characterized in that: The flexible fitting base (14) is made of medical-grade silicone material, the surface of which is covered with a silver ion antibacterial coating and is designed to fit the curvature of the wound surface after breast surgery.

4. A wearable drainage device after breast surgery according to claim 1, characterized in that: The built-in partition plate (17) is configured as a conical structure, and the built-in partition plate (17) is provided with a liquid leakage hole (18).

5. The wearable drainage device after breast surgery according to claim 1, characterized in that: The light source module of the optical sensor (16) adopts a multi-wavelength LED array, such as red / green / blue / infrared, covering the visible light to near infrared band 450-950nm, and supports time-sharing driving.

6. A wearable drainage device after breast surgery according to claim 1, characterized in that: The photoelectric detector is configured with a dual receiving mode: the transmitted light detector faces the light source, and the scattered light detector is arranged at a 90° or 135° lateral angle.

7. A wearable drainage device after breast surgery according to claim 1, characterized in that: The No. 3 drainage pipe (13) is provided with a one-way valve (19).

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