Lymphedema reflux path determination method, treatment method and treatment device

Abstract

The invention provides a lymphedema reflux path determination method, a lymphedema reflux path processing method and a lymphedema reflux path processing device. The lymphedema reflux path determination method comprises the following steps: measuring lymph velocity, pressure and flow direction information in a lymphatic system by an ultrasonic sensor; determining geometric shape, diameter and curvature information of a lymphatic channel in a non-congestion area; according to the collected data, establishing a Navier-Stokes equation to describe the flow of lymph: establishing an objective function and a constraint relation, and determining an optimal lymphatic reflux path. According to the lymph speed, pressure and flow direction information in a lymphatic system, a Navier-Stokes equation is established to describe the flow of the lymph, an objective function is established according to the total resistance loss and the flow resistance, an optimal lymphatic reflux path is determined, massage is performed according to the optimal lymphatic reflux path, and the lymphatic reflux effect is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of medical auxiliary equipment, and particularly relates to a lymphedema backflow path determination method, a processing method and a processing device. BACKGROUND

[0002] Lymphedema usually occurs when the lymphatic system is damaged or blocked. It refers to the subcutaneous fibrous connective tissue hyperplasia and fat sclerosis caused by the obstruction of lymphatic fluid return in certain parts of the body after repeated infection on the body surface. If it is a limb, it will become thicker. In the later stage, the skin thickens, roughens and becomes tough like elephant skin. For the treatment of lymphedema patients, physical therapy methods such as acupoint massage and pressure therapy are usually used according to the edema site of the patient to guide the flow of lymphatic fluid and promote the return of lymphatic fluid, thereby achieving the effect of auxiliary treatment.

[0003] CN202021902884.7 discloses a lymphedema massager. By setting a controller, a sliding rail, a connecting line, a sliding block, a mounting plate, a rotating plate, a mounting ring, a walking bead, a connecting plate, a fixed plate, a connecting block, a fixed block and an electric push rod, the rotating plate is rotated to a suitable position by the electric push rod to wrap the affected limb, and the walking bead on the mounting ring works to wrap and massage. The foregoing disclosed patent massages the patient's body with the walking bead, determines the massage position by the naked eye of the operator, determines the lymphedema backflow path, and cannot determine the optimal lymphatic backflow path. The effect of lymphatic fluid return is limited. Moreover, a single massage method is used, and pressure therapy is not combined, so the effect of promoting lymphatic fluid return is poor. SUMMARY

[0004] To solve the technical problems existing in the prior art, the first aspect of the present application is to provide a lymphedema backflow path determination method. The second aspect, based on the same inventive concept, the present application also provides a lymphedema processing method based on the foregoing lymphedema backflow path determination method. The third aspect, based on the same inventive concept, the present application also provides a lymphedema processing device for the foregoing lymphedema processing method.

[0005] In the present application, the lymphedema backflow path determination method comprises the following steps:

[0006] The ultrasonic sensor measures the velocity, pressure and flow direction information of the lymphatic fluid in the lymphatic system;

[0007] The geometric shape, diameter and curvature information of the lymphatic channel in the non-congestion area are determined;

[0008] According to the collected data, the Navier-Stokes equation is established to describe the flow of lymphatic fluid:

[0009] Wherein, υ is lymph flow rate, P is pressure, ρ is fluid density, ν is dynamic viscosity, g is gravity acceleration;

[0010] Establishing a target function and a constraint relationship, and determining an optimal lymphatic backflow path;

[0011] Wherein, J is total resistance loss, R k is flow resistance of the kth path, L k is length of the kth path;

[0012] Constraint relationship Q≥Q min : lymph flow is greater than minimum flow Q min , R k Approximate value is Wherein, μ is dynamic viscosity of lymph, r k is radius of the kth path.

[0013] The processing method of the embodiment of the application comprises the following steps:

[0014] S1, determining a blockage position, a blockage range and a blockage intensity according to detection information of an ultrasonic sensor and an infrared sensor;

[0015] S2, determining a lymphatic backflow path of the blockage position, a proximal end and a distal end in combination with the blockage range;

[0016] If the blockage range is lower than a threshold value, the lymphatic backflow path is pushed according to the original lymphatic backflow path;

[0017] If the blockage range is higher than the threshold value, a new lymphatic backflow path is determined based on the aforementioned lymphedema backflow path determination method and is pushed.

[0018] The lymphedema treatment device of the embodiment of the application comprises a main body made of flexible elastic material, an air bag array composed of a plurality of air bags capable of independent operation installed on the inner surface of the main body, and a massage device capable of stretching and retracting installed on each air bag. The bottom of the air bag is provided with a horn nozzle communicating with the inside of the air bag, and the massage device is located in the corresponding horn nozzle. The horn nozzle is attached to the skin, the air bag is inflated, the corresponding horn nozzle of the inflated air bag can form positive pressure, the air bag is deflated, the corresponding horn nozzle of the deflated air bag can form negative pressure. The air bag corresponding to the position needing massage is deflated to form negative pressure in the corresponding horn nozzle, and the air bag outside the position needing massage and outside the lymphatic backflow channel is inflated to form positive pressure in the corresponding horn nozzle to extrude lymph. All massage devices are stretched out to contact the skin and push towards the proximal end.

[0019] Compared with the prior art, the beneficial effects of the preferred technical solutions of the application include:

[0020] 1. The present application establishes Navier-Stokes equation to describe the flow of lymph fluid according to the speed, pressure and flow direction information of lymph fluid in the lymphatic system, establishes an objective function according to the total resistance loss and flow resistance, determines the optimal lymphatic reflux path, and massages according to the optimal lymphatic reflux path to improve the lymphatic reflux effect.

[0021] 2. The present application performs pressure relief operation on the corresponding air bag of the lymphatic targeted area, forms a negative pressure environment in the massage chamber surrounded by the horn nozzle, promotes the directional flow of lymph fluid through the fluid mechanics effect; the air bag of the non-targeted area is inflated to form a positive pressure, accelerates the interstitial fluid migration through the biomechanical extrusion effect, and at the same time, all massage heads are pushed to the proximal end at a certain pushing rate, realizing the fluid driving effect of bionic massage. The present application carries out pressure partition regulation and control according to the lymphatic reflux path, forms an annular positive pressure barrier outside the lymphatic reflux channel, reduces the dispersion of lateral fluid flow, and cooperates with the massage device to improve the lymphatic reflux effect.

[0022] 3. The present application sets the air bag and the horn nozzle as a whole, when regulating the air pressure of the massage area in the horn nozzle, the change of the air pressure can be adapted through the contraction of the air bag, having the effect of buffering; at the same time, the main body is made of flexible elastic material, which can bend with the ups and downs of the top of the air bag when the air bag contracts, ensuring that the horn nozzle is always in close contact with the skin. Compared with only setting the horn nozzle, the present application adds the air bag to avoid the pressure concentration caused by the horn nozzle, and improves the wearing comfort and treatment effectiveness of the lymphedema treatment equipment.

[0023] 4. The present application realizes the leapfrog development of lymphedema treatment from empirical operation to quantitative regulation and control by deeply combining biosensors, intelligent control and fluid mechanics, and provides an innovative solution for chronic lymphedema management. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is the front structure schematic diagram of the lymphedema treatment device of example three.

[0025] Figure 2 is Figure 1 A-A partial cross-sectional view in Figure 1 At this time, the lymphedema treatment device is fixed on the skin of the patient and has not yet worked.

[0026] Figure 3 is Figure 1 A-A partial cross-sectional view in Figure 2 At this time, the lymphedema treatment device is in working condition.

[0027] The reference signs in the drawings of the specification include: main body 1, air bag 2, negative pressure air bag 2a, atmospheric pressure air bag 2b, positive pressure air bag 2c, massage device 3, mounting seat 4, horn nozzle 5, air port 6. DETAILED DESCRIPTION

[0028] Embodiments of the present application are described below in detail, examples of which are shown in the accompanying drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0029] Embodiment one

[0030] The embodiment provides a lymphedema backflow path determination method, comprising the following steps:

[0031] The ultrasound sensor measures the lymph fluid speed, pressure and flow direction information in the lymphatic system. The geometric shape, diameter, curvature information of the lymphatic channel in the non-congestion area is determined;

[0032] In this embodiment, the ultrasonic sensor adopts the principle of Doppler effect, by sending high-frequency sound waves and receiving the reflected waves, to measure the speed and direction of lymphatic flow. By analyzing the change of sound wave frequency (Doppler shift), the dynamic information such as flow rate and flow direction of lymphatic fluid is obtained. In addition, the ultrasonic sensor applies a certain pressure to measure the change of echo, and obtains the pressure distribution of the lymphatic system. A pressure sensor can also be provided on the ultrasonic device to directly measure the pressure inside the lymphatic vessel. Through ultrasonic scanning, two-dimensional or three-dimensional images of the lymphatic duct are obtained. After the ultrasonic waves are emitted, they are reflected back at different positions of the lymphatic duct to generate real-time images, so that the geometric characteristics of the lymphatic duct such as shape, diameter, and tortuosity can be understood. It helps to understand whether there are factors affecting flow such as stenosis and excessive bending in the channel. (Section points can be determined according to diameter, tortuosity, etc. For example, a change threshold is set, and where the diameter or tortuosity changes beyond the corresponding change threshold is a section point, or where the flow rate changes beyond the flow rate change threshold is a section point) Figure 1 Figure 1

[0033] Figure 3 Figure 1 Figure 2

[0034] According to the collected data, the Navier-Stokes equation is established to describe the flow of lymph fluid:

[0035] Wherein, υ is the flow rate of lymph fluid, P is the pressure, ρ is the fluid density, ν is the dynamic viscosity, and g is the acceleration of gravity.

[0036] The objective function and constraint relationship are established to determine the optimal lymph backflow path;

[0037] Wherein, J is the total resistance loss, R k is the flow resistance of the kth path, L k is the length of the kth path Figure 2 Figure 3 ​ .

[0038] The constraint relationship Q≥Q min : The lymph fluid flow is greater than the minimum flow Q min , R k is approximately Wherein, μ is the dynamic viscosity of lymph fluid, r k is the radius of the kth path.

[0039] Embodiment two

[0040] The embodiment provides a lymphedema treatment method, comprising the following steps:

[0041] S1, determine the location, extent, and intensity of the blockage based on the detection information from the ultrasonic and infrared sensors;

[0042] S2, determine the lymphatic return path at the location of the blockage, as well as the proximal and distal ends;

[0043] If the blockage area is below the threshold, proceed along the original lymphatic return path;

[0044] If the blockage area exceeds the threshold, a new lymphatic return path is determined and promoted based on the lymphedema return path determination method provided in Example 1.

[0045] For example, if the original lymphatic return path is A, and the blockage area is small (few areas blocked), the lymph fluid can return along the original path. However, if the blockage area is large (many areas blocked), pushing along the original path may not be effective. In this case, a new lymphatic return path is determined and pushed, allowing the lymph fluid to return through other open paths. This invention improves the lymphatic return effect by constructing a lymphatic network topology diagram and determining the optimal pushing path based on the size of the blockage area.

[0046] In step S1 of this invention, the method for determining the location, extent, and intensity of the blockage is as follows:

[0047] Using n ultrasonic sensors (the echo changes when the ultrasonic wave encounters the blockage location), the distances d1, d2, ..., dn from the boundary of the blockage location are measured (if it is within the blockage range, the distance is 0).

[0048] Temperature changes ΔT1, ΔT2, ..., ΔT are measured using m infrared sensors. m ;

[0049] The location of the blockage center is

[0050] Where i is the serial number of the ultrasonic sensor, n is the number of ultrasonic sensors, and d i Let be the index of the i-th ultrasonic sensor relative to the blockage location, and di be the distance measured by the i-th ultrasonic sensor from the boundary of the blockage location. i y i , z i ) represents the coordinates of the i-th ultrasonic sensor.

[0051] The extent of the blockage has been determined:

[0052] Acquire an image detected by any ultrasonic sensor;

[0053] The Canny edge detection algorithm is used to separate the congested area from the healthy area;

[0054] The `findcontours` function from the OpenCV image processing library is used to extract contours and determine the boundaries of the clogging area.

[0055] Calculate the area A of the blockage; A = N × A p ,

[0056] Where N is the number of pixels in the clogged area, A p The actual area of ​​each pixel.

[0057] The clogging intensity Q is:

[0058] Where j is the serial number of the infrared sensor, m is the number of infrared sensors, and ω j Let ΔT be the weight of the j-th infrared sensor. j The change in temperature measured by the j-th infrared sensor (the difference between the detected value and normal body temperature).

[0059] The above technical solution obtains the center position P of the blockage based on the coordinates of the ultrasonic sensor and the distance measured by the ultrasonic sensor from the boundary of the blockage location. This is achieved using an ultrasonic array coordinate positioning algorithm, resulting in high positioning accuracy of the blockage location. Furthermore, the boundary of the blockage area is determined based on the image detected by the ultrasonic sensor and using the Canny algorithm and the findcontours function, achieving high boundary recognition accuracy. Finally, a temperature-blockage intensity model is established, and the blockage intensity is determined based on the temperature changes measured by each infrared sensor and their respective weights, resulting in high accuracy.

[0060] In this invention, the specific method for promoting the lymphatic return pathway in step S2 is as follows:

[0061] Massage the patient's body using a lymphedema treatment device to promote lymphatic fluid return, such as... ​ As shown, the lymphedema treatment device includes a main body 1 made of a flexible elastic material, an array of airbags 2 consisting of several independently operable airbags 2 mounted on the inner surface of the main body 1, and a retractable massage device 3 mounted on each airbag 2, with each massage device 3 corresponding to one airbag 2. The bottom of each airbag 2 has a flared nozzle 5 communicating with its interior, and the massage device 3 is located within the corresponding flared nozzle 5; the area inside the flared nozzle is a massage chamber. For example, the bottom of each airbag 2 has an air inlet 6 located within the flared nozzle 5, and the interior of the flared nozzle 5 communicates with the interior of the airbag 2 through the air inlet 6.

[0062] S21, let the number of airbag 2 be t=1.

[0063] S22, the tth air bag 2 on the lymphatic return path from the distal end is adjusted to negative pressure, the rest of the air bags 2 on the lymphatic return path are adjusted to atmospheric pressure, and the rest of the air bags 2 outside the lymphatic return path are adjusted to positive pressure. For example ​ and ​ As shown in the four air bags 2 arranged in a row, at a certain moment, the middle two air bags 2 in the same row are located on the lymphatic return path and are adjusted to negative pressure (negative pressure air bag 2a), the rest of the air bags 2 on the lymphatic return path are adjusted to atmospheric pressure (atmospheric pressure air bag 2b), and the air bags on the left and right sides are located outside the lymphatic return path and are adjusted to positive pressure (positive pressure air bag 2c).

[0064] In practice, a three-level pressure adjustment mechanism can be provided, 1) basic mode: 0.02MPa negative pressure / 0.08MPa positive pressure; 2) enhanced mode: 0.05MPa negative pressure / 0.12MPa positive pressure; 3) dynamic compensation mode: ±10% of the reference pressure closed loop adjustment.

[0065] S23, turn on the massage device 3 corresponding to all air bags 2, the massage device 3 is extended to contact the skin, the massage device 3 pushes the massage to the proximal end, and the massage intensity is determined according to the obstruction intensity. In practice, contact force feedback control can be realized by using a piezoresistive film sensor (sensitivity ±0.005MPa) to facilitate adjustment of the massage intensity.

[0066] S24, after the massage reaches the threshold time (the threshold time can be preset, such as 1min), t=t+1, if t is greater than the total number of air bags 2 on the lymphatic return path, then exit, otherwise return to step S22.

[0067] In the present application, the method for determining the massage intensity according to the obstruction intensity Q is to classify the obstruction intensity Q according to a preset threshold. If it is moderate obstruction, the massage intensity is F (such as 10N), and the massage time is T; if it is mild obstruction, the massage intensity is 0.8F, and the massage time is 0.8T; if it is severe obstruction, the massage intensity is 0.6F, and the massage time is 1.2T.

[0068] The above technical solution classifies the obstruction intensity Q according to a preset threshold, and adjusts the massage intensity and massage time for mild, moderate and severe obstruction respectively, thereby improving the accuracy and safety of lymphedema massage treatment.

[0069] Example Three

[0070] The present embodiment provides a lymphedema treatment device for the lymphedema treatment method of example two, as shown in ​As shown in the figure, in a preferred embodiment, the treatment device comprises a main body 1 made of flexible elastic material, an air bag 2 array installed on the inner surface of the main body 1, which is composed of several independently operating air bags 2, and a massage device 3 installed on each air bag 2, which is arranged one-to-one with the air bag 2. The bottom of the air bag 2 is provided with a horn nozzle 5 communicating with the inside of the air bag 2, and the massage device 3 is located in the corresponding horn nozzle 5, and the area inside the horn nozzle is a massage chamber. For example, the bottom of the air bag 2 has an air port 6 located in the horn nozzle 5, and the inside of the horn nozzle 5 communicates with the inside of the air bag 2 through the air port 6; the structure and material of the horn nozzle 5 are the same as those of the negative pressure suction cup, and the horn nozzle 5 is fixed on the bottom of the air bag 2 by hot melting or adhesive bonding.

[0071] In the present application, the main body 1 is made of soft silica gel or soft rubber, and the main body 1 has a strip structure and can bend with the ups and downs of the air bag 2. The way the main body 1 is fixed on the limb can adopt the prior art, such as the inner surface of the main body 1 has two adhesive layers extending along the length direction outside the air bag 2 matrix on both sides, and the main body 1 is fixed on the skin through the two adhesive layers; or the inner surface of the main body 1 is provided with two rows of suction cups arranged at intervals along the length direction outside the air bag 2 matrix on both sides, and the main body 1 is fixed on the skin through the two rows of suction cups; or the main body 1 is fixed on the limb by a fixing belt.

[0072] In the present application, the air bag 2 can adopt the material of the inflatable balloon in the prior art, and the shape of the air bag 2 is preferably rectangular. ​ As shown in the figure, in normal state, the air bag 2 has air, the air bag 2 is puffy, and the inside of the air bag 2 maintains normal pressure. The air bag 2 is connected to a gas charging and discharging device (not shown in the figure) through a gas pipe provided with a gas valve arranged in parallel, and the gas charging and discharging device charges and discharges air to the air bag 2 through the gas pipe.

[0073] In the present application, the massage device 3 can adopt the prior art, and the massage head of the massage device 3 can roll on the skin surface and push towards the proximal end.

[0074] As shown in the figures, ​ and ​ In use, the main body 1 is fixed on the limb (including limbs, chest wall, abdomen and neck, etc.) where lymphedema occurs, and the horn nozzle 5 at the bottom of all air bags 2 is in close contact with the skin to form a closed cavity inside the air bag 2 and the horn nozzle 5. After the horn nozzle 5 is in close contact with the skin, air is filled into the air bag 2 to make the volume of the air bag 2 slightly expand upward, and since the horn nozzle 5 communicates with the inside of the air bag 2 through the air port 6, positive pressure can be formed in the corresponding horn nozzle 5 of the air bag 2 after being inflated. By discharging air from the air bag 2, the top of the air bag 2 contracts downward, and negative pressure can be formed in the corresponding horn nozzle 5 of the air bag 2 after being discharged, so that the skin is sucked into the horn nozzle 5 to make the horn nozzle 5 tightly suck on the skin.

[0075] Initially, all massage devices 3 are in the retracted state, there is a gap between the massage devices 3 and the skin, and the inside of each air bag 2 is maintained at atmospheric pressure (atmospheric pressure air bag 2b).

[0076] When the processing device enters the working mode, the air bags 2 corresponding to the positions requiring massage on the lymphatic return path are deflated (the air bags 2 are negative pressure air bags 2a), negative pressure is formed in the corresponding horn nozzles 5, the air bags 2 on the lymphatic return path perform gradient pressure relief operation, a certain pressure (such as 0.02-0.05 MPa) negative pressure environment is formed in the massage chamber enclosed by the horn nozzles 5, and the fluid mechanics effect promotes the directional flow of lymph. The air bags 2 outside the positions requiring massage and outside the lymphatic return path are inflated (the air bags 2 are positive pressure air bags 2c), positive pressure is formed in the corresponding horn nozzles 5, and the adjacent air bags 2 in the non-target area preferably implement controllable inflation (such as 0.08-0.12 MPa positive pressure), forming a dynamic pressure gradient zone, and the biomechanical extrusion effect accelerates the migration of interstitial fluid.

[0077] All massage devices 3 are extended to contact the skin and are pushed towards the proximal end, for example, all massage heads are pushed towards the proximal end at a certain pushing rate (such as 0.5-2 mm / s), the epidermal contact state can be monitored in real time by a contact piezoelectric sensor, and after effective contact is established, the proximal end is pushed to realize the fluid driving effect of bionic massage.

[0078] In another preferred embodiment of the present application, the processing device further comprises a congestion detection device (the congestion detection device can be arranged in the horn nozzles 5 or the space between the horn nozzles 5) for detecting the congestion position outside the patient's skin, the signal output end of the congestion detection device is connected to the congestion input end of the controller, and the controller determines the position requiring massage according to the information of the congestion detection device. Specifically, the congestion detection device comprises an ultrasonic sensor and an infrared sensor, which detect the congestion position and transmit it to the controller. It is prior art, for example, the high-frequency ultrasonic probe (5-10 MHz) of the ultrasonic sensor realizes the elastography of the 3-15 mm subcutaneous tissue structure; the infrared sensor uses a near-infrared spectrum sensor (850-950 nm) to obtain the microcirculation characteristic parameters of the 2-5 mm superficial layer.

[0079] Although embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A method for determining the lymphedema drainage path, characterized in that, Includes the following steps: Ultrasonic sensors measure the velocity, pressure, and flow direction of lymph in the lymphatic system; Determine the geometry, diameter, and tortuosity of lymphatic channels in non-congested areas; Based on the collected data, the Navier-Stokes equation was established to describe the flow of lymph: Where υ is the lymph flow velocity, P is the pressure, ρ is the fluid density, ν is the dynamic viscosity, and g is the gravitational acceleration. Establish the objective function and constraints to determine the optimal lymphatic return path; Where J is the total drag loss, R k Let L be the flow resistance of the k-th path segment. k Let k be the length of the k-th path segment; Constraint relationship Q≥Q min : Lymph flow rate is greater than minimum flow rate Q min , R k Approximate value Where μ is the dynamic viscosity of lymph, and r k Let be the radius of the k-th path segment.

2. A method for treating lymphedema, characterized in that, Includes the following steps: S1, determine the location, extent, and intensity of the blockage based on the detection information from the ultrasonic and infrared sensors; S2, combined with the scope of stagnation, determine the lymphatic return path at the location of the stagnation, as well as the proximal and distal ends; If the blockage area is below the threshold, proceed along the original lymphatic return path; If the blockage area exceeds the threshold, a new lymphatic return path is determined and promoted based on the lymphedema return path determination method described in claim 1.

3. The method for treating lymphedema according to claim 2, characterized in that, In step S1, the method for determining the location, extent, and intensity of the blockage is as follows: The distances d1, d2, ..., dn from the boundary of the blockage location are measured using n ultrasonic sensors; Temperature changes ΔT1, ΔT2, ..., ΔT are measured using m infrared sensors. m ; The location of the blockage center is Where i is the serial number of the ultrasonic sensor, n is the number of ultrasonic sensors, and d i Let be the index of the i-th ultrasonic sensor relative to the blockage location, and di be the distance measured by the i-th ultrasonic sensor from the boundary of the blockage location. i y i , z i Let be the coordinates of the i-th ultrasonic sensor; The extent of the blockage has been determined: Acquire an image detected by any ultrasonic sensor; The Canny edge detection algorithm is used to separate the congested area from the healthy area; The `findcontours` function from the OpenCV image processing library is used to extract contours and determine the boundaries of the clogging area. Calculate the area A of the blockage; A = N × A p , Where N is the number of pixels in the clogged area, A p The actual area of ​​each pixel; The clogging intensity Q is: Where j is the serial number of the infrared sensor, m is the number of infrared sensors, and ω j Let ΔT be the weight of the j-th infrared sensor. j The temperature change is measured by the j-th infrared sensor.

4. The method for treating lymphedema according to claim 2, characterized in that, In step S2, the specific method for promoting the lymphatic return pathway is as follows: The lymphedema treatment device massages the patient's body to promote lymphatic fluid return. The lymphedema treatment device includes a main body made of flexible elastic material, an array of airbags consisting of several independently working airbags mounted on the inner surface of the main body, and a retractable massage device mounted on each airbag. The bottom of the airbag is provided with a flared nozzle that communicates with its interior, and the massage device is located in the corresponding flared nozzle. Specifically, the steps include the following: S21, let the airbag number t = 1; S22, the t-th airbag starting from the distal end on the lymphatic drainage path is adjusted to negative pressure, the remaining airbags on the lymphatic drainage path are adjusted to atmospheric pressure, and the remaining airbags outside the lymphatic drainage path are adjusted to positive pressure. S23, activate the massage devices corresponding to all airbags, extend the massage devices to contact the skin, push the massage devices towards the proximal end, and determine the massage intensity according to the intensity of the blockage; S24. After the massage reaches the threshold time, let t = t + 1. If t is greater than the total number of air sacs on the lymphatic return path, then exit; otherwise, return to step S22.

5. The method for treating lymphedema according to claim 4, characterized in that, The method for determining the massage intensity based on the degree of blockage is as follows: The intensity of siltation is classified according to a preset threshold. For moderate blockage, the massage intensity is F and the massage time is T. For mild blockage, the massage intensity is 0.8F and the massage time is 0.8T. For severe blockage, the massage intensity is 0.6F and the massage time is 1.2T.

6. A lymphedema treatment apparatus for use in the lymphedema treatment method according to any one of claims 2-5, characterized in that, It includes a main body made of flexible elastic material, an airbag array consisting of several independently working airbags mounted on the inner surface of the main body, and a retractable massage device mounted on each airbag. The bottom of the airbag is provided with a flared nozzle that communicates with its interior, and the massage device is located in the corresponding flared nozzle. Make the nozzle fit against the skin. Inflate the airbag to create positive pressure in the nozzle corresponding to the inflated airbag. Deflating the airbag creates negative pressure in the nozzle corresponding to the deflated airbag. By deflating the airbag corresponding to the area requiring massage, negative pressure is created in the corresponding nozzle. By inflating the airbag outside the area requiring massage and outside the lymphatic drainage channel, positive pressure is created in the corresponding nozzle to squeeze lymph fluid. All massage devices extend to contact the skin and are pushed towards the proximal end.

7. The lymphedema treatment device according to claim 6, characterized in that, The main body is a strip-shaped structure that can bend with the rise and fall of the airbag.

8. The lymphedema treatment device according to claim 7, characterized in that, The inner surface of the main body has two adhesive layers extending along its length on both sides of the outer side of the airbag matrix, and the main body is fixed to the skin by the two adhesive layers. Alternatively, the inner surface of the main body is provided with two rows of suction cups spaced apart along its length on both sides of the outer side of the airbag matrix, and the main body is fixed to the skin by the two rows of suction cups; Alternatively, the main body may be fixed to the limb by a strap.

9. The lymphedema treatment device according to any one of claims 6-8, characterized in that, It also includes a blockage detection device that detects the location of blockages from outside the patient's skin. The signal output terminal of the blockage detection device is connected to the blockage input terminal of the controller, and the controller determines the location that needs to be massaged based on the information from the blockage detection device.

10. The lymphedema treatment device according to claim 9, characterized in that, The blockage detection device includes an ultrasonic sensor and an infrared sensor, which detect the location of the blockage and transmit the data to the controller.

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