Self-constriction type limb lymphedema compression oversleeve based on subcutaneous hydrops monitoring

Abstract

The invention is applied to the technical field of medical apparatus and instruments, and particularly discloses a self-constriction type limb lymphedema compression oversleeve based on subcutaneous effusion monitoring, which comprises a first fabric layer, a second fabric layer arranged in the first fabric layer, a third fabric layer arranged in the second fabric layer, and a third fabric layer arranged in the third fabric layer. The first fabric layer, the second fabric layer and the third fabric layer form a main body part of the oversleeve. According to the self-constriction type limb lymphedema compression oversleeve based on subcutaneous effusion monitoring, the first air bag, the second air bag and the third air bag are arranged in the interlayer of each of the three sections of oversleeves, the air bags are inflated at different time periods through a miniature air pump, so that the effect of changing the pressure of the oversleeves is achieved, the miniature air pump inflates air of the same volume into the three air bags, and the pressure of the oversleeves is changed. Different pressures are formed in the air bags with different diameters, so that the pressure gradient of the limb surface of a patient is realized, extrusion from the far end to the near end of the limb is simulated through the oversleeve by utilizing the time difference and the pressure difference, and lymphatic reflux is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to a self-contracting limb lymphedema compression sleeve based on subcutaneous effusion monitoring. Background Art

[0002] Lymph plays an important role in the balance of tissue fluid production and reabsorption. It brings nutrients and takes away damaged cells, cancer cells, and microorganisms through lymphatic flow. Lymphedema can occur when lymphatic vessels develop abnormally or lymphatic flow is blocked. The causes of lymphedema usually include congenital and acquired causes. The latter is mainly surgical factors, such as the removal of axillary lymph nodes in female patients undergoing breast cancer surgery, radiotherapy, and severe injuries to the hands or legs. Long-term lymphedema can cause hyperplasia of subcutaneous fibrous connective tissue, fat sclerosis, increase the risk of skin infection and sepsis, and may cause skin changes and damage, resulting in changes in the morphology of the patient's limbs and affecting the mobility of the limbs. At present, the more effective treatment for lymphedema is mainly physical therapy. Usually, a pressure bandage is used on the swollen arm or leg to provide pressure so that the edematous lymph fluid in the arm or leg can flow back. However, the operation process of the pressure bandage is cumbersome, so sleeves have gradually been developed to achieve the pressure process on the limbs.

[0003] The sleeves are worn on the patient's limbs to tighten the arms or legs, but current sleeves are made of elastic fabric. During use, the pressure on the limbs farthest from the heart is the same as that on the limbs close to the heart, which is not conducive to the return of lymph to the heart. Summary of the invention

[0004] The purpose of the present invention is to provide a self-contracting limb lymphedema compression sleeve based on subcutaneous effusion monitoring, so as to solve the problem in the above-mentioned background technology that during use of the elastic fabric sleeve, the pressure at the end far from the heart and the end close to the heart is the same, and there is no time gradient difference, which is not conducive to lymphatic return.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a self-contracting limb lymphedema compression sleeve based on subcutaneous effusion monitoring, comprising a first fabric layer, the first fabric layer is a cylindrical structure with two ends through, and the first fabric layer is made of elastic fabric, a second fabric layer is arranged inside the first fabric layer, the second fabric layer has the same structure as the first fabric layer, and the first fabric layer and the second fabric layer are sewn at both ends to form a hollow sandwich structure, the second fabric layer is made of elastic fabric, a third fabric layer is arranged inside the second fabric layer, the third fabric layer and the second fabric layer are sewn at both ends to form a hollow sandwich structure, and the third fabric layer is made of elastic fabric, the first fabric layer, the second fabric layer and the third fabric layer constitute the main body of the sleeve, the two ends of the first fabric layer are respectively provided with connecting structures, the connecting structure is respectively provided with adjustable connecting part 1 and connecting part 2 at both ends of the sleeve body to realize the fixing and disassembly of the sleeve on the surface of the limb, the sleeve body is divided into three sections, and the sleeve body is marked as section 1, section 2 and section 3 from the side of connecting part 1 to the side of connecting part 2 in sequence;

[0006] Preferably, the connecting structure includes a connecting part one, which is a cylindrical structure with two ends passed through, and the connecting part one is an elastic fabric, one end of the connecting part one is sewn and connected to the first fabric layer, and a symmetrical triangular notch is arranged on the surface of the other end of the connecting part one, and the notch on the surface of the connecting part one is located at one-third of the connecting part one, a push buckle one is fixedly installed on the surface of the connecting part one, and the push buckle one is located on one side of the notch, and a push buckle two is arranged on the other side surface of the connecting part one, and the push buckle two is fixedly connected to the surface of the connecting part one through a connecting rope, and the connection point of the push buckle two is located on one side of the notch of the connecting part one, and the push buckle two is engaged and matched with the push buckle one.

[0007] By adopting the above technical solution, the state of the connecting part 1 can be switched by engaging the push buckle 1 and the push buckle 2, thereby realizing the connection process between the sleeve and the arm or leg.

[0008] Preferably, the other end of the first fabric layer is sewn and connected to a second connection part, the second connection part is an elastic fabric, the second connection part is a semicircular structure, and a fixing strip is fixedly connected to the surface of one side of the second connection part, and a snap ring is symmetrically arranged on the surface of the other side of the second connection part, and Velcro is arranged on the surface of the fixing strip to be connected to the surface of the second connection part, and two fixing strips are arranged on the surface of the second connection part, and the two fixing strips are arranged in opposite directions.

[0009] By adopting the above technical solution, the sleeve and the surface of the limb can be fixed by using the fixing strips on the second surface of the connecting part.

[0010] Preferably, a pressure sensing structure is arranged in the interlayer formed by the second fabric layer and the third fabric layer, and the pressure sensing structure is provided with a plurality of micro pressure sensors to realize pressure monitoring between the sleeve and the surface of the limb, and the pressure contraction of the sleeve is controlled by utilizing the pressure data difference between the micro pressure sensors.

[0011] By adopting the above technical solution, a micro pressure sensor is used to monitor the pressure data of the cuff and the surface of the limb, and the micro air pump is controlled through the time difference and pressure change.

[0012] Preferably, the pressure sensing structure includes a micro pressure sensor, which is a patch-type circular sensor, fixedly connected to the outer surface of the third fabric layer, and located in the interlayer between the second fabric layer and the third fabric layer, a plurality of the micro pressure sensors are arranged in a ring as a group, and three groups of the micro pressure sensors are arranged in parallel on the outer surface of the third fabric layer, the three groups of micro pressure sensors are respectively located in segment 1, segment 2 and segment 3 of the cuff body, and the micro pressure sensor is connected to an external processing terminal.

[0013] By adopting the above technical solution, the processing terminal can identify and process the data of the micro pressure sensor, and use the data difference between the micro pressure sensors to determine whether lymphedema occurs in the limbs, thereby starting the micro air pump for inflation.

[0014] Preferably, an inflatable structure is provided in the interlayer between the first fabric layer and the second fabric layer, and the inflatable structure is provided with a plurality of groups of inflatable air bags to achieve pressure regulation of the cuff.

[0015] By adopting the above technical solution, the inflation structure can be used to expand the airbag, thereby changing the pressure of the sleeve on the limb.

[0016] Preferably, the inflatable structure includes an airbag No. 1, which is a cylindrical structure and is connected to the outer surface of the second fabric layer. A plurality of the airbags No. 1 are distributed in a ring shape in the No. 1 section of the sleeve, and the plurality of airbags No. 1 are connected and communicated with each other through a connecting tube. A micro air pump is provided on one side of the airbag No. 1, and the surface of the micro air pump is connected to the surfaces of two adjacent No. 1 airbags. The air outlet pipe of the micro air pump is communicated with the connecting tube, and an air delivery pipe is provided at the air inlet pipe of the micro air pump to pass through the surface of the first fabric layer.

[0017] By adopting the above technical solution, the No. 1 airbag can be inflated using a micro air pump.

[0018] Preferably, the No. 2 segment of the sleeve is annularly distributed with multiple No. 2 airbags, and the structure at the No. 2 airbag is the same as that at the No. 1 airbag. The No. 3 segment of the sleeve is annularly distributed with multiple No. 3 airbags, and the structure at the No. 3 airbag is the same as that at the No. 1 airbag. The diameters of the No. 1 airbag, No. 2 airbag and No. 3 airbag increase sequentially.

[0019] By adopting the above technical solution, a pressure gradient on the cuff surface can be achieved by using a No. 1 airbag, a No. 2 airbag and a No. 3 airbag with different diameters.

[0020] Preferably, the three micro air pumps are respectively connected to a power interface, and the power interface is embedded on the surface of the first fabric layer. The micro air pump is connected to a processing terminal of a micro pressure sensor through an electrical signal, and the three micro air pumps are started in sequence according to segment one, segment two, and segment three.

[0021] By adopting the above technical solution, the time difference between the expansion of airbag No. 1, airbag No. 2 and airbag No. 3 can be achieved by using micro air pumps that are started in sequence, first the distal end, then the middle end and finally the proximal end, to achieve a pressure gradient and return the blocked and retained lymph fluid from the distal end to the proximal end.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: the self-contracting limb lymphedema compression sleeve based on subcutaneous effusion monitoring:

[0023] 1. In the present invention, the sleeve body is divided into three sections from the connection part 1 to the connection part 2, which are marked as section 1, section 2 and section 3 in sequence, and the sleeve body is provided with a sandwich structure, and a first airbag, a second airbag and a third airbag are arranged in the sandwich of section 1, section 2 and section 3. The airbags are filled with gas to expand, and the airbags are used to form pressure on the surface of the limb to perform compression treatment on lymphedema;

[0024] 2. The diameters of the No. 1, No. 2 and No. 3 airbags increase in sequence. The airbags are inflated by a micro air pump to achieve the effect of changing the cuff pressure. The micro air pump fills air into the three groups of airbags to form different pressures in airbags of different diameters, thereby achieving a pressure gradient on the surface of the patient's limbs and facilitating lymphatic return;

[0025] Furthermore, a micro air pump is used to inflate airbag No. 1 at the segment far from the heart, airbag No. 2 at the middle segment, and airbag No. 3 at the segment close to the heart in sequence, thereby utilizing the time difference in inflation to simulate the flow of lymph from the distal hands and feet to the proximal heart through squeezing.

[0026] 3. In the present invention, a connection part 1 and a connection part 2 are respectively provided at both ends of the sleeve body, and a fixing strip on the surface of the connection part 2 can be used to fix one side of the sleeve to the limb. After the limb passes through the sleeve body, the sleeve body can be quickly put on the surface of the limb by connecting the fixing strip provided on the surface of the connection part 2 with the connection part 2, which is convenient for operation and can also prevent the sleeve body from falling off the surface of the limb due to the movement of the joints during the activity of the limb;

[0027] 4. A triangular notch is provided at one third of the surface of the connection part 1 of the sleeve body, and the notch can be connected by means of the push buckle 1 and the push buckle 2 on the upper and lower sides. After the notch is connected, the connection part 1 will form a glove structure, which is convenient for connecting the sleeve and the arm. When the notch is open, one side of the connection part 1 is open, which is convenient for connecting the sleeve and the leg, so that the sleeve of the same specification can be used for the arm and the leg, achieving the possibility of large-scale production. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a front view structural schematic diagram of the present invention;

[0029] Figure 2 It is a bottom view structural schematic diagram of the present invention;

[0030] Figure 3 This is a schematic diagram of the front cross-sectional structure of the first fabric layer of the present invention;

[0031] Figure 4 This is a schematic diagram of the structure of the second fabric layer of the present invention;

[0032] Figure 5 This is a schematic diagram of the front cross-sectional structure of the second fabric layer of the present invention;

[0033] Figure 6 It is a schematic diagram of the connection structure between the micro pressure sensor and the third fabric layer of the present invention;

[0034] Figure 7 It is a schematic diagram of the airbag structure of the present invention.

[0035] In the figure: 1. first fabric layer; 2. second fabric layer; 3. third fabric layer; 4. connection part one; 5. connection part two; 6. fixing strip; 7. push buckle one; 8. push buckle two; 9. miniature pressure sensor; 10. airbag number one; 11. airbag number two; 12. airbag number three; 13. connecting tube; 14. miniature air pump; 15. air supply pipe; 16. power interface. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figure 1-7 The present invention provides a technical solution: a self-contracting limb lymphedema compression sleeve based on subcutaneous effusion monitoring, comprising a first fabric layer 1, a second fabric layer 2, a third fabric layer 3, a connecting part 1 4, a connecting part 2 5, a fixing strip 6, a pressing buckle 1 7, a pressing buckle 2 8, a micro pressure sensor 9, a No. 1 airbag 10, a No. 2 airbag 11, a No. 3 airbag 12, a connecting tube 13, a micro air pump 14, an air supply tube 15, and a power interface 16.

[0038] The first fabric layer 1 is a cylindrical structure with two ends penetrated, and the first fabric layer 1 is made of elastic fabric, a second fabric layer 2 is arranged inside the first fabric layer 1, the second fabric layer 2 has the same structure as the first fabric layer 1, and the first fabric layer 1 and the second fabric layer 2 are sewn at both ends to form a hollow sandwich structure, the second fabric layer 2 is made of elastic fabric, a third fabric layer 3 is arranged inside the second fabric layer 2, the third fabric layer 3 and the second fabric layer 2 are sewn at both ends to form a hollow sandwich structure, and the third fabric layer 3 is made of elastic fabric, and the first fabric layer 1, the second fabric layer 2 and the third fabric layer 3 constitute the main body of the sleeve;

[0039] like Figure 1 and Figure 3 As shown, when the device is used for compression treatment of lymphedema, the patient's limb with lymphedema is inserted from one side of the sleeve and pulled out from the other end of the sleeve. At this time, the third fabric layer 3 of the elastic fabric is in contact with the surface of the limb, and the first fabric layer 1 is located at the outermost layer. The elastic first fabric layer 1, the second fabric layer 2 and the third fabric layer 3 can form initial pressure on the surface of the patient's limb to compress the patient's limb.

[0040] A connecting structure is respectively arranged at both ends of the first fabric layer 1, and an adjustable connecting part 14 and a connecting part 25 are respectively arranged at both ends of the sleeve body to realize the fixing and removal of the sleeve on the surface of the limb. The sleeve body is divided into three sections, and the sleeve body is marked as section 1, section 2 and section 3 from the side of the connecting part 14 to the side of the connecting part 25. The connecting structure includes a connecting part 4, which is a cylindrical structure with two ends penetrated, and the connecting part 4 is an elastic fabric. One end of the connecting part 4 is sewn and connected to the first fabric layer 1, and a symmetrical triangular notch is arranged on the surface of the other end of the connecting part 4, and the notch on the surface of the connecting part 4 is located at one-third of the connecting part 4, and a press buckle 7 is fixedly installed on the surface of the connecting part 4. , and the push buckle 1 7 is located on one side of the notch, and the other side surface of the connecting part 1 4 is provided with a push buckle 2 8, and the push buckle 2 8 is fixedly connected to the surface of the connecting part 1 4 through a connecting rope, and the connection point of the push buckle 2 8 is located on one side of the notch of the connecting part 1 4, and the push buckle 2 8 is engaged and matched with the push buckle 1 7, and the other end of the first fabric layer 1 is sewn and connected with the connecting part 2 5, the connecting part 2 5 is an elastic fabric, the connecting part 2 5 is a semicircular structure, and a fixing strip 6 is fixedly connected to the surface of the connecting part 2 5, and a clamping ring is symmetrically provided on the other side surface of the connecting part 2 5, and the surface of the fixing strip 6 is provided with Velcro to be connected with the surface of the connecting part 2 5, and two fixing strips 6 are provided on the surface of the connecting part 2 5, and the two fixing strips 6 are arranged in opposite positions;

[0041] like Figure 1 , Figure 2 and Figure 3 As shown, in the process of connecting the sleeve to the limb, when connecting the hand part, the push buckle 2 8 is passed through the notch on the surface of the connecting part 4 and engaged with the push buckle 7, so that the connecting rope on the surface of the push buckle 2 8 connects the upper and lower notches on the surface of the connecting part 4, so that the connecting part 4 forms a glove structure, the thumb is passed through the glove structure formed by the connecting part 4, and the sleeve body is attached to the surface of the arm, the fixing strip 6 is held, and the fixing strip 6 is passed through the clamping ring on the other side surface of the connecting part 2 5, and the Velcro on the surface of the fixing strip 6 is connected to the surface of the connecting part 2 5. Similarly, the fixing strip 6 on the other side is connected. The two staggered fixing strips 6 can prevent the sleeve body from falling off. When connecting the leg, the push buckle 2 8 and the push buckle 7 are separated. At this time, one side of the connecting part 4 is open, and the foot can be passed through.

[0042] A pressure sensing structure is arranged in the interlayer formed by the second fabric layer 2 and the third fabric layer 3. The pressure sensing structure is provided with a plurality of micro pressure sensors 9 to realize pressure monitoring between the sleeve and the surface of the limb, and the pressure contraction of the sleeve is controlled by using the pressure data difference between the micro pressure sensors 9. The pressure sensing structure includes the micro pressure sensor 9, which is a patch-type circular sensor. The micro pressure sensor 9 is fixedly connected to the outer surface of the third fabric layer 3, and the micro pressure sensor 9 is located in the interlayer between the second fabric layer 2 and the third fabric layer 3. The plurality of micro pressure sensors 9 are arranged in a ring shape as a group. Three groups of micro pressure sensors 9 are arranged in parallel on the outer surface of the third fabric layer 3. The three groups of micro pressure sensors 9 are respectively located in the first segment, the second segment and the third segment of the sleeve body, and the micro pressure sensor 9 is connected to the external processing terminal;

[0043] like Figure 1 , Figure 5 and Figure 6 As shown, when the third fabric layer 3 is in contact with the limb, the micro pressure sensor 9 is in contact with the limb. At this time, the pressure data of multiple micro pressure sensors 9 are the same. When lymphedema appears somewhere on the surface of the patient's limb, the data of a certain micro pressure sensor 9 increases. The data of the micro pressure sensor 9 is transmitted to the processing terminal for analysis and judgment. When the processing terminal determines that there is a numerical difference in the data between the multiple micro pressure sensors 9, the processing terminal starts the inflation structure to perform the pressurization process.

[0044] An inflatable structure is arranged in the interlayer between the first fabric layer 1 and the second fabric layer 2. The inflatable structure is provided with multiple groups of inflatable airbags to realize pressure regulation of the cuff. The inflatable structure includes a No. 1 airbag 10. The No. 1 airbag 10 is a cylindrical structure, and the No. 1 airbag 10 is connected to the outer surface of the second fabric layer 2. Multiple No. 1 airbags 10 are distributed in a ring shape in the No. 1 section of the cuff. The multiple No. 1 airbags 10 are connected through a connecting pipe 13. A micro air pump 14 is arranged on one side of the No. 1 airbag 10. The surface of the micro air pump 14 is connected to the surfaces of two adjacent No. 1 airbags 10. The air outlet pipe of the micro air pump 14 is connected with the connecting pipe 13. An air supply pipe 15 is arranged at the air inlet pipe of the micro air pump 14 to pass through the connecting pipe 13. Wear the surface of the first fabric layer 1, the second segment of the sleeve is annularly distributed with multiple No. 2 airbags 11, the structure of the No. 2 airbag 11 is the same as that of the No. 1 airbag 10, the third segment of the sleeve is annularly distributed with multiple No. 3 airbags 12, the structure of the No. 3 airbag 12 is the same as that of the No. 1 airbag 10, the diameters of the No. 1 airbag 10, the No. 2 airbag 11 and the No. 3 airbag 12 increase in sequence, three micro air pumps 14 are respectively connected to the power interface 16, the power interface 16 is embedded in the surface of the first fabric layer 1, the micro air pump 14 is connected to the processing terminal of the micro pressure sensor 9 through an electrical signal, and the three micro air pumps 14 are started in sequence according to the sequence of the No. 1 segment, the No. 2 segment and the No. 3 segment;

[0045] like Figure 3 , Figure 4 , Figure 6 and Figure 7 As shown, the processing terminal starts the micro air pump 14, and the micro air pump 14 inputs the outside air into the connecting tube 13 through the air supply pipe 15, and inputs the air into the No. 1 airbag 10, the No. 2 airbag 11 and the No. 3 airbag 12 respectively, and controls the No. 1 airbag 10 far from the heart segment, the No. 2 airbag 11 in the middle segment and the No. 3 airbag 12 close to the heart segment to expand in turn to compress the limbs. The volume of air injected into the No. 1 airbag 10, the No. 2 airbag 11 and the No. 3 airbag 12 is the same. Since the diameters of the No. 1 airbag 10, the No. 2 airbag 11 and the No. 3 airbag 12 increase in turn, the pressure at the No. 1 airbag 10 is the largest, and the pressure at the No. 3 airbag 12 is the smallest. A decreasing pressure gradient is formed on the surface of the cuff body from the end far from the heart to the end close to the heart, which is beneficial to the reflux of lymph fluid, and cooperates with the asynchronous expansion of the No. 1 airbag 10, the No. 2 airbag 11 and the No. 3 airbag 12 to simulate the flow of lymph from the hands and feet at the distal end of the limb to the proximal heart through squeezing.

[0046] Working principle: Push button 2 8 is passed through the notch on the surface of connecting part 1 4 and engaged with push button 1 7, so that connecting part 1 4 can form a glove structure, which is convenient for fixing the device on the palm. The palm passes through connecting part 1 4, so that the sleeve body fits on the surface of the arm. The sleeve body can be fixed on the surface of the limb by fixing the fixing strip 6 and connecting part 2 5. The micro pressure sensor 9 is in contact with the limb. The micro pressure sensor 9 monitors the surface pressure of the limb to start the micro air pump 14. The micro air pump 14 inflates the No. 1 airbag 10, No. 2 airbag 11 and No. 3 airbag 12. Since the diameters of No. 1 airbag 10, No. 2 airbag 11 and No. 3 airbag 12 are different, the inflated No. 1 airbag 10, No. 2 airbag 11 and No. 3 airbag 12 form a pressure gradient on the surface of the limb, which is beneficial to the return of lymph fluid.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-contracting limb lymphedema compression sleeve based on subcutaneous effusion monitoring, comprising a first fabric layer (1), the first fabric layer (1) being a cylindrical structure with two ends connected, and the first fabric layer (1) being made of elastic fabric, a second fabric layer (2) being arranged inside the first fabric layer (1), the second fabric layer (2) having the same structure as the first fabric layer (1), and the first fabric layer (1) and the second fabric layer (2) being sewn at both ends to form a hollow sandwich structure, the second fabric layer (2) being made of elastic fabric, a third fabric layer (3) being arranged inside the second fabric layer (2), the third fabric layer (3) and the second fabric layer (2) being sewn at both ends to form a hollow sandwich structure, and the third fabric layer (3) being made of elastic fabric, the first fabric layer (1), the second fabric layer (2) and the third fabric layer (3) forming the main body of the sleeve, characterized in that: The two ends of the first fabric layer (1) are respectively provided with connection structures, and the connection structures are respectively provided with adjustable connection part 1 (4) and connection part 2 (5) at the two ends of the sleeve body to realize the fixing and removal of the sleeve on the surface of the limb, and the sleeve body is divided into three sections, and the sleeve body is marked as section 1, section 2 and section 3 in sequence from the side of the connection part 1 (4) to the side of the connection part 2 (5).

2. The self-contracting limb lymphedema compression sleeve based on subcutaneous effusion monitoring according to claim 1, characterized in that: The connection structure comprises a connection part (4), the connection part (4) is a cylindrical structure with two ends through, and the connection part (4) is an elastic fabric, one end of the connection part (4) is sewn and connected to the first fabric layer (1), the other end surface of the connection part (4) is provided with a symmetrical triangular notch, and the notch on the surface of the connection part (4) is located at one third of the connection part (4), the surface of the connection part (4) is fixedly installed with a press buckle (7), and the press buckle (7) is located on one side of the notch, and the other side surface of the connection part (4) is provided with a press buckle (8), the press buckle (8) is fixedly connected to the surface of the connection part (4) through a connecting rope, the connection point of the press buckle (8) is located on one side of the notch of the connection part (4), and the press buckle (8) is engaged and matched with the press buckle (7).

3. The self-contracting limb lymphedema compression sleeve based on subcutaneous effusion monitoring according to claim 1, characterized in that: The other end of the first fabric layer (1) is sewn and connected to a second connecting part (5), the second connecting part (5) is an elastic fabric, the second connecting part (5) is a semicircular structure, and a fixing strip (6) is fixedly connected to the surface of one side of the second connecting part (5), and a snap ring is symmetrically arranged on the surface of the other side of the second connecting part (5), and a Velcro is arranged on the surface of the fixing strip (6) to be connected to the surface of the second connecting part (5), and two fixing strips (6) are arranged on the surface of the second connecting part (5), and the two fixing strips (6) are arranged in opposite directions.

4. The self-contracting limb lymphedema compression sleeve based on subcutaneous effusion monitoring according to claim 1, characterized in that: A pressure sensing structure is arranged in the interlayer formed by the second fabric layer (2) and the third fabric layer (3), and a plurality of micro pressure sensors (9) are arranged in the pressure sensing structure to monitor the pressure between the sleeve and the surface of the limb, and the pressure contraction of the sleeve is controlled by using the pressure data difference between the micro pressure sensors (9).

5. The self-contracting limb lymphedema compression sleeve based on subcutaneous effusion monitoring according to claim 4, characterized in that: The pressure sensing structure comprises a micro pressure sensor (9), which is a patch-type circular sensor. The micro pressure sensor (9) is fixedly connected to the outer surface of the third fabric layer (3), and the micro pressure sensor (9) is located in the interlayer between the second fabric layer (2) and the third fabric layer (3). A plurality of the micro pressure sensors (9) are arranged in a ring to form a group. Three groups of the micro pressure sensors (9) are arranged in parallel on the outer surface of the third fabric layer (3). The three groups of the micro pressure sensors (9) are respectively located in the first segment, the second segment and the third segment of the sleeve body. The micro pressure sensor (9) is connected to an external processing terminal.

6. The self-contracting limb lymphedema compression sleeve based on subcutaneous effusion monitoring according to claim 1, characterized in that: An inflatable structure is provided in the interlayer between the first fabric layer (1) and the second fabric layer (2), and the inflatable structure is provided with a plurality of groups of inflatable air bags to achieve pressure regulation of the cuff.

7. The self-contracting limb lymphedema compression sleeve based on subcutaneous effusion monitoring according to claim 6, characterized in that: The inflation structure comprises a No. 1 airbag (10), which is a cylindrical structure and is connected to the outer surface of the second fabric layer (2). A plurality of the No. 1 airbags (10) are distributed in a ring shape in the No. 1 section of the sleeve, and the plurality of the No. 1 airbags (10) are connected and penetrated by a connecting tube (13). A micro air pump (14) is arranged on one side of the No. 1 airbag (10), and the surface of the micro air pump (14) is connected to the surfaces of two adjacent No. 1 airbags (10). The air outlet pipe of the micro air pump (14) is penetrated by the connecting tube (13), and an air delivery pipe (15) is arranged at the air inlet pipe of the micro air pump (14) to penetrate the surface of the first fabric layer (1).

8. The self-contracting limb lymphedema compression sleeve based on subcutaneous effusion monitoring according to claim 7, characterized in that: The second segment of the sleeve is provided with a plurality of second airbags (11) distributed in an annular pattern, and the structure of the second airbags (11) is the same as that of the first airbag (10). The third segment of the sleeve is provided with a plurality of third airbags (12) distributed in an annular pattern, and the structure of the third airbag (12) is the same as that of the first airbag (10). The diameters of the first airbag (10), the second airbag (11) and the third airbag (12) increase sequentially.

9. The self-contracting limb lymphedema compression sleeve based on subcutaneous effusion monitoring according to claim 7, characterized in that: The three micro air pumps (14) are respectively connected to a power interface (16), and the power interface (16) is embedded on the surface of the first fabric layer (1). The micro air pump (14) is connected to a processing terminal of a micro pressure sensor (9) via an electrical signal, and the three micro air pumps (14) are started in sequence according to the order of segment 1, segment 2, and segment 3.

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