A variable-configuration prosthetic receiving cavity with directional perspiration function

Abstract

The present invention discloses a variable configuration prosthetic receiving cavity with a directional perspiration function, comprising a receiving cavity body, a radial adjustment module, an up-down adjustment module and a control module; the radial adjustment module is arranged on the receiving cavity body through the up-down adjustment module; the receiving cavity body comprises an inner layer, an outer layer, a mesh fence and a temperature regulating ball. The present invention can adjust the wearer's prosthetic pressure inside the receiving cavity body through the radial adjustment module according to the wearer's needs, and the position of the pressure-bearing part can be adjusted through the up-down adjustment module, so that the wearer has more choices; at the same time, through the interface force film sensor and remote communication control, the wearer can adjust the prosthetic receiving cavity more conveniently and quickly, and the comfort of the prosthetic receiving cavity is well improved; the receiving cavity body adopts a three-layered design of an inner layer, a heat dissipation layer and an outer layer, which can drain the sweat of the inner layer of the receiving cavity in a directional manner, and can also adjust the temperature while draining the sweat, thereby improving the perspiration and heat dissipation effects of the receiving cavity.

Description

Technical Field

[0001] The invention relates to a prosthetic receiving cavity, in particular to a variable configuration prosthetic receiving cavity with a directional perspiration function. Background Art

[0002] Prosthesis is the main rehabilitation aid for patients with amputation or limb incompleteness to restore their mobility and appearance. Prosthesis is mainly composed of a socket, a connector and a foot plate. The socket is the interface between the residual limb and the prosthesis. It is the most important part of the prosthesis. It plays the role of containing the residual limb, bearing the body's gravity, controlling the movement of the prosthesis, suspending the prosthesis and transmitting force. The reasonable design of the prosthesis socket must meet the requirements of functional transfer and safety and comfort. However, the rigidity requirement of the residual limb / receptor interface for functional transfer and the flexibility requirement of the interface for safety and comfort are a fundamental contradiction. Long-term and high-load wearing of prostheses will cause the residual limb to be subjected to high normal force and high friction, leading to a series of problems such as redness, swelling, blisters, nodules, wear, local blood circulation obstruction, muscle fatigue damage, and even tissue necrosis. In addition, the common prosthetic socket is not breathable. After the prosthesis wearer wears it for a long time, the temperature in the cavity will rise, causing the prosthesis wearer to sweat more easily, and the sweat cannot be effectively discharged, which further reduces the comfort of the wearer. Therefore, designing a reasonable prosthetic socket structure can maximize the wearing comfort of the prosthesis while ensuring functional transferability, and solve the fundamental contradiction that the rigid and flexible properties of the prosthetic socket interface cannot be satisfied at the same time in current clinical applications. This has important social significance and market prospects. Summary of the invention

[0003] In response to the problems existing in the above-mentioned prior art, the present invention provides a variable-configuration prosthetic receiving cavity with a directional sweat drainage function, which can adjust the inner wall pressure of the prosthetic receiving cavity and the position of the pressure-bearing part, and can directionally drain the sweat of the inner layer of the receiving cavity. While draining sweat, it can also adjust the temperature, thereby improving the sweat drainage and heat dissipation effects of the receiving cavity.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a variable configuration prosthetic receiving cavity with directional perspiration function, comprising a receiving cavity body, a radial adjustment module, an up-and-down adjustment module and a control module;

[0005] The upper and lower adjustment modules are composed of two symmetrically arranged adjustment components, which include a fixed guide rail, a pulley, a fixed guide rod, a rotating handle, a pulley connection block and a lateral fixed plate; the fixed guide rail is an "L"-shaped plate and an adjustment groove is provided on one surface thereof, a pulley is respectively provided at the upper and lower ends of the pulley connection block through a fixed guide rod, the inner end of the fixed guide rod is connected to the lateral fixed plate after passing through the adjustment groove, a threaded rod is provided at the center of the pulley connection block, the inner end of the threaded rod is connected to the lateral fixed plate after passing through the adjustment groove, the outer end of the threaded rod is threadedly connected to the rotating handle, and the other surface of the fixed guide rail is connected to the outer wall of the receiving cavity body through a fixed boss;

[0006] The radial adjustment module includes a motor connector, a module bracket, a short connecting rod, a partition, a push rod motor and a pressure plate; two partitions are arranged in the longitudinal direction inside the module bracket to divide the module bracket into three space parts, the push rod motor is arranged in the middle part of the module bracket, and the push rod of the push rod motor is connected to the motor connector. A longitudinal slide groove and a transverse slide groove are respectively arranged on the left and right side walls of the module bracket, and the longitudinal slide groove is located above the outer side of the transverse slide groove. Longitudinal guide rails and transverse guide rails are respectively arranged at the positions of the longitudinal slide groove and the transverse slide groove on the outer side wall of the partition plate. The upper , and the lower two ends are respectively provided with pins, the two ends of the upper pin are respectively embedded in the longitudinal slide groove and the longitudinal guide rail, the two ends of the lower pin are respectively embedded in the transverse slide groove and the transverse guide rail, and the two side ends of the motor connector are respectively hinged with the upper pin; the outer sides of the two side walls of the module bracket are provided with module lateral fixing plates, the two module lateral fixing plates are respectively connected with the lateral fixing plates in the two adjustment assemblies, and one side of the pressure plate is hinged with the lower pin through a connecting rod; the interface force film sensor is arranged on the other side of the pressure plate; one side of the pressure plate of the radial adjustment module faces the inside of the receiving cavity body;

[0007] The push rod motor and the interface force film sensor are both connected to the control module.

[0008] Furthermore, a friction plate is provided on the inner side surface of the pulley connecting block, and a disc spring is provided on the fixed guide rod, and the disc spring is located between the pulley and the fixed guide rail.

[0009] Furthermore, a short connecting rod is hingedly connected to the bottom of the short connecting rod through a long connecting rod, and the side walls of the module bracket corresponding to the upper and lower ends of the short connecting rod below are respectively provided with longitudinal sliding grooves and transverse sliding grooves; the outer side walls of the partition corresponding to the upper and lower ends of the short connecting rod below are respectively provided with longitudinal guide rails and transverse guide rails; the upper and lower ends of the short connecting rod below are respectively provided with pin shafts, and the two ends of the upper pin shaft are respectively embedded in the longitudinal sliding groove and the longitudinal guide rail, and the two ends of the lower pin shaft are respectively embedded in the transverse sliding groove and the transverse guide rail.

[0010] Furthermore, the interface force thin film sensor includes, from bottom to top, a lower PET board, a conductive composite material layer, a dielectric layer and a top raised layer; a plurality of lower electrodes are arranged between the lower PET board and the conductive composite material layer and the lower electrodes are connected to the conductive composite material layer; a plurality of upper electrodes are arranged between the dielectric layer and the top raised layer and the upper electrodes are connected to the top raised layer; the lower electrodes and the upper electrodes are arranged in one-to-one correspondence, and the lower PET board is connected to the pressure plate.

[0011] Furthermore, the upper surface of the dielectric layer is covered with micro-protrusions, which are pyramid-shaped, with a base length of 100 um and a height of 120 um for each micro-protrusion, and a distance between each micro-protrusion is 170 um.

[0012] Furthermore, the control module includes a wireless communication module and a microprocessor module. The wireless communication module adopts a model of MS50SFB1, and the microprocessor module adopts a model of stm32.

[0013] Furthermore, the receiving cavity body includes an inner layer and an outer layer, and also includes a mesh fence and a temperature regulating ball;

[0014] A mesh fence is arranged between the inner layer and the outer layer, a plurality of sweat gland holes are arranged on the inner layer, a sweat outlet is arranged on the outer layer corresponding to the positions where the sweat gland holes are arranged, a microfluidic pipeline is arranged in the grid of the mesh fence corresponding to the positions where the sweat gland holes are arranged, the microfluidic pipeline connects the sweat gland holes and the sweat outlet, and a temperature regulating ball is arranged in the remaining grids of the mesh fence;

[0015] A bionic texture layer is arranged on the outer surface of the inner layer, a hydrophilic material is sprayed on the bionic texture layer around the sweat gland pores, and a hydrophobic material is sprayed on the rest of the bionic texture layer in an alternating manner.

[0016] Furthermore, the hydrophilic material sprayed on the bionic texture layer around the sweat gland pores is in a star shape.

[0017] Furthermore, the hydrophilic material is polyvinyl alcohol, the hydrophobic material is polytetrafluoroethylene, and the temperature regulating ball adopts PCM phase change material.

[0018] Furthermore, the microfluidic pipeline is made of oxidized polyethylene, and the inner wall of the microfluidic pipeline is a multiple duckbill-shaped microcavity structure channel.

[0019] Compared with the prior art, the present invention can adjust the pressure of the wearer's prosthesis inside the receiving cavity body through the radial adjustment module according to the actual needs of the wearer, and the position of the pressure-bearing part can be adjusted through the up and down adjustment modules, so that the wearer has more choices and can better meet the daily life needs of the prosthesis wearer; at the same time, through the interface force film sensor and remote communication control, the wearer can adjust the prosthesis receiving cavity more conveniently and quickly, and the comfort of the prosthesis receiving cavity is greatly improved; the receiving cavity body adopts a three-layered design of an inner layer, a heat dissipation layer and an outer layer, and the inner layer is based on the back of a desert beetle. The structural design is to construct a hydrophilic-hydrophobic interface structure on the bionic texture layer to directionally drain sweat to the sweat gland pores and flow to the sweat outlet through the microfluidic channel. The inner wall of the microfluidic channel inside the heat dissipation layer is designed as a duckbill-shaped microcavity structure channel based on the structure of the mouth edge area of ​​the pitcher plant, and a hydrophilic channel is constructed to enhance the capillary action. The sweat is driven unidirectionally through the duckbill-shaped microcavity structure channel, which meets the requirement that the sweat flows in the set direction and moves toward the sweat outlet. The temperature regulating ball inside the heat dissipation layer plays a role in temperature self-regulation. It absorbs heat when the temperature exceeds the comfortable temperature range and releases heat when the temperature is below the comfortable temperature range, thereby achieving self-regulation of temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a three-dimensional diagram of the radial adjustment module of the present invention;

[0022] Figure 3 This is a schematic diagram of a half-section structure of a radial adjustment module of the present invention;

[0023] Figure 4 It is a side view of the radial adjustment module of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the up and down adjustment module of the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of the interfacial force thin film sensor of the present invention;

[0026] Figure 7 This is a schematic diagram of the internal structure of the receiving cavity body of the present invention;

[0027] Figure 8 It is a schematic longitudinal section diagram of the receiving cavity body of the present invention;

[0028] Fig. 9 It is a schematic diagram of the enlarged structure of the wall surface of the microfluidic pipeline of the present invention;

[0029] In the figure: 1-receptacle body, 101-hydrophobic material, 102-hydrophilic material, 103-sweat gland pores, 104-bionic texture layer, 105-temperature regulating ball, 106-grid fence, 107-microfluid pipeline, 108-sweat outlet, 109-inner layer, 1010-heat dissipation layer, 1011-outer layer, 2-interface force film sensor, 201-lower PET board, 202-lower electrode, 203-conductive composite material layer, 204-dielectric layer, 205-upper electrode, 206-top raised layer, 3-fixed boss, 4-control mold Block, 5-radial adjustment module, 501-motor connector, 502-module bracket, 503-lateral connecting plate, 504-short connecting rod, 505-partition, 506-push rod motor, 507-long connecting rod, 508-rolling bearing, 509-pin, 510-longitudinal guide rail, 511-transverse guide rail, 512-pressure plate, 6-up and down adjustment module, 601-fixed guide rail, 602-pulley, 603-fixed guide rod, 604-rotating handle, 605-disc spring, 606-pulley connecting block, 607-friction plate, 608-lateral fixing plate. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings.

[0031] 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.

[0032] like Figure 1 As shown, the present invention provides a technical solution: including a receiving cavity body 1, a radial adjustment module 5, an up and down adjustment module 6 and a control module 4.

[0033] like Figure 5As shown, the upper and lower adjustment module 6 is composed of two symmetrically arranged adjustment components, which include a fixed guide rail 601, a pulley 602, a fixed guide rod 603, a rotating handle 604, a pulley connecting block 606 and a lateral fixed plate 608; the fixed guide rail 601 is an "L"-shaped plate and an adjustment groove is provided on one surface thereof, and a pulley 602 is provided at the upper and lower ends of the pulley connecting block 606 through the fixed guide rod 603 respectively, and the inner end of the fixed guide rod 603 passes through the adjustment groove and is connected to the lateral fixed plate 608, and a threaded rod is provided at the center of the pulley connecting block 606, and the inner end of the threaded rod passes through The rear end of the adjustment groove is connected to the lateral fixing plate 608, the outer end of the threaded rod is threadedly connected to the rotating handle 604, the inner side surface of the pulley connecting block 606 is provided with a friction plate 607, and the fixed guide rod 603 is provided with a disc spring 605. The disc spring 605 is located between the pulley 602 and the fixed guide rail 601. The other surface of the fixed guide rail 601 is connected to the outer wall of the receiving cavity body 1 through the fixed boss 3; the tightness of the pulley connecting block 606 and the fixed guide rail 601 can be adjusted by rotating the handle 604 to achieve the purpose of adjusting the height of the lateral fixing plate 608 up and down in the adjustment groove. In order to increase the fastening friction and prevent the lateral fixing plate 608 from sliding down, a friction plate 607 is provided on the inner side of the pulley connecting block 606, and the friction plate 607 replaces the pulley connecting block 606 to contact the fixed guide rail 601; a disc spring 605 is provided on the fixed guide rod 603, and the disc spring 605 is located between the pulley 602 and the fixed guide rail 601. When the position of the pulley connecting block 606 needs to be adjusted and the rotating handle 604 is loosened, the pulley 602 and the pulley connecting block 606 will be bounced outward by the elastic force, thereby separating the pulley connecting block 606 and the fixed guide rail 601, making it convenient to adjust the position of the pulley connecting block 606.

[0034] like Figure 2-Figure 4As shown, the radial adjustment module 5 includes a motor connector 501, a module bracket 502, a short connecting rod 504, a partition 505, a push rod motor 506 and a pressure plate 512; two partitions 505 are arranged in the longitudinal direction inside the module bracket 502 to divide the module bracket 502 into three space parts, the push rod motor 506 is arranged in the middle part of the module bracket 502, and the push rod of the push rod motor 506 is connected to the horizontal middle part of the motor connector 501, and a longitudinal slide groove and a transverse slide groove are respectively provided on the left and right side walls of the module bracket 502, and the longitudinal slide groove is located above the outer side of the transverse slide groove, and a longitudinal guide rail 510 and a transverse guide rail 511 are respectively arranged at the positions of the longitudinal slide groove and the transverse slide groove on the outer side wall of the partition 505, and a pin shaft 509 is respectively provided at the upper and lower ends of the short connecting rod 504. The two ends of the upper pin shaft 509 are respectively embedded in the longitudinal slide groove and the longitudinal guide rail 510, and the two ends of the lower pin shaft 509 are respectively embedded in the transverse slide groove and the transverse guide rail 511. The two side ends of the motor connecting piece 501 are respectively hinged with the upper pin shaft 509; the outer sides of the two side walls of the module bracket 502 are provided with module lateral fixing plates 503, and the two module lateral fixing plates 503 are respectively connected to the lateral fixing plates 608 in the two adjustment components, and one side of the pressure plate 512 is hinged with the lower pin shaft 509 through a connecting rod; the interface force film sensor 2 is arranged on the other side of the pressure plate 512; one side of the pressure plate 512 of the radial adjustment module 5 faces the receiving cavity body 1, and the receiving cavity body 1 corresponding to the position of the pressure plate 512 is hollowed out so that the pressure plate 512 can pass through the receiving cavity body 1 to press the wearer's residual limb when moving. The two module lateral fixing plates 503 are respectively connected to the lateral fixing plates 608 in the two adjustment components, that is, the radial adjustment module 5 is connected to the up-down adjustment module 6 , and the radial adjustment module 5 can adjust the height up and down through the up-down adjustment module 6 .

[0035] The push rod motor 506 works to drive the push rod to extend, and the push rod drives the motor connecting member 501 to move upward, and the motor connecting member 501 drives the pin 509 at the upper end of the short connecting rod 504 to move upward along the longitudinal guide rail 510. The pin 509 at the lower end of the short connecting rod 504 moves outward along the transverse guide rail 511, and one side of the pressure plate 512 is hinged to the lower pin 509 through the connecting rod, so the pressure plate 512 also moves outward away from the wearer's residual limb, that is, the pressure of the pressure plate 512 on the wearer's residual limb is reduced, and this step is a relaxation procedure; on the contrary, the push rod motor 506 works to drive the push rod to retract, and the push rod drives the motor connecting member 501 to move downward, and the motor connecting member 501 drives the pin 509 at the upper end of the short connecting rod 504 to move downward along the longitudinal guide rail 510, and the pin 509 at the lower end of the short connecting rod 504 moves inward along the transverse guide rail 511 to get close to the wearer's residual limb, that is, the pressure of the pressure plate 512 on the wearer's residual limb is increased, and this step is a clamping procedure; in order to ensure the symmetry of pressure, two groups of radial adjustment modules 5 are arranged, which are distributed 180° along the outside of the receiving cavity body 1; In order to maintain the stability of the force applied by the pressure plate 512, another short connecting rod 504 is hingedly connected below the short connecting rod 504 through the long connecting rod 507, and the upper and lower ends of the long connecting rod 507 are respectively hinged to the upper pins 509 of the upper and lower short connecting rods 504, and the side walls of the module bracket 502 corresponding to the upper and lower ends of the short connecting rod 504 below are respectively provided with longitudinal slide grooves and transverse slide grooves; the outer side walls of the partition 505 corresponding to the upper and lower ends of the short connecting rod 504 below are respectively provided with longitudinal guide rails 510 and transverse guide rails 511; the upper and lower ends of the short connecting rod 504 below are respectively provided with pins 509, and the two ends of the upper pin 509 are respectively embedded in the longitudinal slide groove and the longitudinal guide rail 510, and the two ends of the lower pin 509 are respectively embedded in the transverse slide groove and the transverse guide rail 511; in this way, the upper and lower parts of the pressure plate 512 apply force at the same time, thereby ensuring the stability of its force application. In order to improve the smoothness of the movement of the pin shaft 509 , a rolling bearing 508 is provided at the end of the pin shaft 509 , and the rolling bearing 508 is rollingly connected with the guide rail and the slide groove.

[0036] The push rod motor 506 and the interface force film sensor 2 are both connected to the control module 4; the control module 4 includes a communication module and a microprocessor module, the wireless communication module adopts the model MS50SFB1, and the microprocessor module adopts the model stm32; the push rod motor 506 and the interface force film sensor 2 are connected to the microprocessor module, and the communication module is wirelessly connected to the application terminal, and the application terminal is preferably a mobile phone. Through the application terminal, instructions can be sent to the control module 4 to control the operation of the push rod motor 506, so as to achieve the purpose of adjusting the pressure of the pressure plate 512 on the wearer's residual limb.

[0037] like Figure 6As shown, the interface force film sensor 2 includes, from bottom to top, a lower PET plate 201, a conductive composite material layer 203, a dielectric layer 204 and a top protruding layer 206, a plurality of lower electrodes 202 are arranged between the lower PET plate 201 and the conductive composite material layer 203, and the lower electrodes 202 are connected to the conductive composite material layer 203, a plurality of upper electrodes 205 are arranged between the dielectric layer 204 and the top protruding layer 206, and the upper electrodes 205 are connected to the top protruding layer 206; the lower electrodes 201 are arranged between the dielectric layer 204 and the top protruding layer 206, and the upper electrodes 205 are connected to the top protruding layer 206; The positions of the electrodes 202 and the upper electrodes 205 are arranged in a one-to-one correspondence, the lower PET plate 201 is connected to the pressure plate 512, and the magnitude of the interface force of the wearer's prosthesis is measured by the change in capacitance between the lower electrode 202 and the upper electrode 205, and the data is transmitted to the control module 4; the upper surface of the dielectric layer 204 is covered with micro-convex bodies, and the micro-convex bodies are pyramid-shaped. The bottom side length of a single micro-convex body is 100um and the height is 120um. The distance between each micro-convex body is 170um. The micro-convex bodies can improve the measurement sensitivity of the sensor.

[0038] There are two control modes of the control module 4. The first is active control. In the active control mode, the control module 4 sends the collected interface force data detected by the interface force film sensor 2 to the application on the wearer's mobile phone or computer or other application terminal through the wireless communication module. The wearer adjusts the size of the interface force according to his own needs based on the interface force data on the application. When the interface force needs to be reduced, the wearer sends a relaxation instruction to the control module 4 through the application, and the instruction is transmitted to the microprocessor module through the wireless communication module, and the microprocessor module runs the relaxation program; when the interface force needs to be increased, the wearer sends a compression instruction to the control module 4 through the application, and the instruction is transmitted to the microprocessor module through the wireless communication module, and the microprocessor module runs the compression program. The second control method is automatic control. In the automatic control mode, the wearer will determine the size of the interface force according to his or her own needs, and then send it to the microprocessing module through the wireless communication module. The microprocessing module compares the size of the interface force with the actual interface force value fed back by the interface force film sensor 2: if the interface force fed back by the interface force film sensor 2 is larger than the set value, the control module 4 controls the pressure block 512 to move away from the wearer's residual limb to reduce the interface force; if the actual interface force fed back by the interface force film sensor 2 is equal to the set value, the control module 4 is in standby mode; if the actual interface force fed back by the interface force film sensor 2 is smaller than the set value, the control module 4 controls the pressure block 512 to press the wearer's residual limb to increase the interface force.

[0039] like Figure 7 and Figure 8 As shown, the receiving cavity body 1 includes an inner layer 109, an outer layer 1011, a mesh fence 106 and a temperature regulating ball 105; a mesh fence 106 is arranged between the inner layer 109 and the outer layer 1011, and a plurality of sweat gland holes 103 are provided on the inner layer 109, and the distribution density of the sweat gland holes 103 is 200mm2 A sweat outlet 108 is provided on the outer layer 1011 corresponding to the position where the sweat gland pore 103 is provided, and a microfluidic channel 107 is provided in the grid of the mesh fence 106 corresponding to the position where the sweat gland pore 103 is provided, and the microfluidic channel 107 connects the sweat gland pore 103 and the sweat outlet 108, such as Fig. 9 As shown, the material of the microfluidic pipeline 107 is oxidized polyethylene, and the inner wall of the microfluidic pipeline 107 is a duckbill-shaped microcavity structure; the temperature regulating ball 105 is arranged in the remaining grids of the mesh fence 106; the outer surface of the inner layer 109 is provided with a bionic texture layer 104 made of medical silicone printed with a skin texture stamp, the bionic texture layer 104 around the sweat gland pores 103 is sprayed with a hydrophilic material 102, and the rest of the bionic texture layer 104 is staggeredly sprayed with a hydrophobic material 101, the sprayed hydrophilic material 102 is star-shaped, the diameter of the sweat gland pores 103 is 5 mm, the diameter of the circumscribed circle of the hydrophilic material 102 is about 10 mm, and the inscribed circle is about 7 mm; the hydrophilic material 102 is preferably polyvinyl alcohol, and the hydrophobic material 101 is preferably polytetrafluoroethylene.

[0040] The receiving cavity body 1 includes two basic parts: one is the sweat guiding and distributing mechanism part composed of the inner layer 109 , and the other is the temperature self-regulating and sweat releasing integrated unit part composed of the heat dissipation layer 1010 and the outer layer 1011 .

[0041] Sweat guidance and distribution mechanism: This part is composed of the hydrophobic material 101, the hydrophilic material 102 and the sweat gland pores 103 on the surface of the inner layer 109. Through the interlaced layout of the three, supplemented by the bionic texture layer 104, the sweat is effectively guided along the predetermined path to the sweat gland pores 103. The hydrophobic material 101 and the hydrophilic material 102 are specially designed to be arranged in a staggered star shape, and the hydrophilic material 102 is inside the star shape and the hydrophobic material 101 is outside, so as to work together to guide the sweat generated by the interface friction and extrusion to the sweat gland pores 103 at the preset position.

[0042] Temperature self-regulation and perspiration integrated unit part: This part consists of a heat dissipation layer 1010 and an outer layer 1011, wherein the heat dissipation layer 1010 includes a mesh fence 106 and a temperature regulating ball 105 made of PCM phase change material embedded in its grid to achieve heat absorption and dissipation. The microfluidic channel 107 is arranged in the grid of the mesh fence 106, passes through the mesh fence 106 and connects the sweat gland pores 103 and the sweat outlet 108. The microfluidic channel 107 has a hydrophilic inner wall, and uses surface tension to drive sweat to flow to the sweat outlet 108. At the same time, the inner wall of the channel imitates the structure of the rim of the pitcher plant, that is, the inner wall of the channel is a multiple duckbill-shaped microcavity structure. The duckbill-shaped microcavity structure can effectively absorb liquid. The microcavity can have an asymmetric structure, so that liquid can easily enter in one direction, but it is difficult to exit in the other direction due to the blocking effect of the structure; this design can achieve unidirectional fluid control, ensuring that the fluid can only be discharged in one direction. By cleverly using surface tension and capillary phenomena, the duckbill-shaped microcavity structure can detect and absorb extremely small volumes of liquid, as well as discharge it in a directional manner.

[0043] Sweat passes through the inner layer 109 and is discharged from the outer layer 1011 via the heat dissipation layer 1010 to realize a complete sweating process, which requires the sweat guiding and distribution mechanism part and the temperature self-regulation and sweating integrated unit part to complement each other, and the temperature regulating ball 105 in the heat dissipation layer 1010 plays the role of temperature self-regulation, absorbing heat when the temperature exceeds the comfortable temperature range and releasing heat when the temperature is below the comfortable temperature range, thereby realizing self-regulation of temperature.

[0044] Sweat production and initial guidance: When the wearer starts to sweat, the sweat first contacts the inner layer 109. The surface of the inner layer 109 adopts a bionic texture and a hydrophilic-hydrophobic layout design, so that the hydrophilic material 102 and the hydrophobic material 101 are intertwined to form a microscopic sweat distribution pattern. The sweat is attracted by the hydrophilic area and, under the guidance of the hydrophobic material 101, moves along a preset path toward the sweat gland pores 103; the bionic texture layer 104 will produce tiny gaps when in contact with the skin, which will enhance air circulation to a certain extent and facilitate heat dissipation.

[0045] Capillary action guides sweat: The inner wall of the microfluidic channel 107 constructs a hydrophilic channel by imitating the mouth edge structure of the pitcher plant to enhance the capillary action. The sweat is driven directionally through the inner wall of the microfluidic channel 107, meeting the requirement that the sweat flows in a set direction and moves toward the sweat outlet 108.

[0046] Phase change heat absorption of sweat: When sweat flowing through the microfluidic channel 107 moves, the heat of sweat is transferred to the temperature regulating ball 105 through the microfluidic channel 107. The temperature regulating ball 105 is made of PCM phase change material. The PCM phase change material can absorb heat according to the temperature difference between its own phase change temperature and the local environment, thereby reducing the heat accumulation of the residual limb. At the same time, it also utilizes the latent heat evaporation of sweat, which helps to form a more balanced temperature environment in the heat dissipation layer 1010. The phase change temperature of the PCM phase change material used is preferably around 25°C. In order to obtain better heat dissipation and temperature regulation functions, a plurality of temperature regulating balls 105 are arranged in the grid of the mesh fence 106. The filling ratio of the temperature regulating ball 105 and a single grid is determined according to the designed regulation effect. Thus, the temperature regulating ball 105 with a suitable diameter can be selected, and the reserved space is made more uniform under the premise of satisfying the filling ratio. In this way, the heat conduction of the temperature regulating ball 105 during the phase change process of heat dissipation and heat absorption is more uniform, and stress is reduced.

[0047] Temperature control, heat dissipation and transfer: The temperature regulating ball 105 is responsible for managing both body heat from the residual limb and external environmental heat. When the temperature inside the receiving cavity rises, the temperature regulating ball 105 absorbs excess heat and stores it during the phase change process, reducing the wearer's thermal discomfort. As the ambient temperature drops or the temperature of the residual limb decreases, the heat stored in the temperature regulating ball 105 can be released to help maintain a constant temperature.

[0048] Final discharge of sweat: After temperature-controlled heat dissipation and transfer, the sweat is finally discharged to the sweat outlet 108 on the outer layer 1011. After the sweat is gathered here, it is directed to the external environment, completing the entire directional sweat discharge process.

[0049] The receiving cavity body 1 of the present invention can achieve effective perspiration and heat dissipation, which can significantly improve the wearing experience, prevent skin lesions caused by sweat accumulation, enhance the stability and control of the prosthesis, reduce the frequency of cleaning and maintenance, thereby promoting the skin health of the residual limb as a whole and improving the quality of life of the user, which has important social significance and market prospects.

[0050] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any slight modification, equivalent substitution and improvement made to the above embodiment based on the technical essence of the present invention should be included in the protection scope of the technical solution of the present invention.

Claims

1. A variable-configuration prosthetic receiving cavity with directional perspiration function, comprising a receiving cavity body (1); characterized in that: It also includes a radial adjustment module (5), an up and down adjustment module (6) and a control module (4); The upper and lower adjustment modules (6) are composed of two symmetrically arranged adjustment components, which include a fixed guide rail (601), a pulley (602), a fixed guide rod (603), a rotating handle (604), a pulley connection block (606) and a lateral fixed plate (608); the fixed guide rail (601) is an "L"-shaped plate and has an adjustment groove on one surface thereof; a pulley (602) is provided at the upper and lower ends of the pulley connection block (606) through a fixed guide rod (603); the inner end of the fixed guide rod (603) passes through the adjustment groove and is connected to the lateral fixed plate (608); a threaded rod is provided at the center of the pulley connection block (606); the inner end of the threaded rod passes through the adjustment groove and is connected to the lateral fixed plate (608); the outer end of the threaded rod is threadedly connected to the rotating handle (604); the other surface of the fixed guide rail (601) is connected to the outer wall of the receiving cavity body (1) through a fixed boss (3); The radial adjustment module (5) comprises a motor connector (501), a module bracket (502), a short connecting rod (504), a partition (505), a push rod motor (506) and a pressure plate (512); two partitions (505) are arranged in the longitudinal direction inside the module bracket (502) to divide the module bracket (502) into three space parts, the push rod motor (506) is arranged in the middle part of the module bracket (502), and the push rod of the push rod motor (506) is connected to the motor connector (501); a longitudinal slide groove and a transverse slide groove are respectively provided on the left and right side walls of the module bracket (502), and the longitudinal slide groove is located above the outer side of the transverse slide groove; a longitudinal guide rail (510) and a transverse guide rail (511) are respectively provided at the positions of the longitudinal slide groove and the transverse slide groove on the outer side wall of the partition (505), and the short connecting rod (505) is provided. 04) are provided with pins (509) at the upper and lower ends respectively, the two ends of the upper pin (509) are respectively embedded in the longitudinal slide groove and the longitudinal guide rail (510), the two ends of the lower pin (509) are respectively embedded in the transverse slide groove and the transverse guide rail (511), and the two side ends of the motor connecting member (501) are respectively hinged to the upper pin (509); the outer sides of the two side walls of the module bracket (502) are provided with module lateral fixing plates (503), the two module lateral fixing plates (503) are respectively connected to the lateral fixing plates (608) in the two adjustment components, and one side of the pressure plate (512) is hinged to the lower pin (509) through a connecting rod; the interface force film sensor (2) is arranged on the other side of the pressure plate (512); one side of the pressure plate (512) of the radial adjustment module (5) faces the inside of the receiving cavity body (1); The push rod motor (506) and the interface force film sensor (2) are both connected to the control module (4); The receiving cavity body (1) comprises an inner layer (109) and an outer layer (1011), and also comprises a mesh fence (106) and a temperature regulating ball (105); A mesh fence (106) is arranged between the inner layer (109) and the outer layer (1011); a plurality of sweat gland pores (103) are arranged on the inner layer (109); a sweat outlet (108) is arranged on the outer layer (1011) at the positions where the sweat gland pores (103) are arranged; a microfluidic pipeline (107) is arranged in the grid of the mesh fence (106) at the positions where the sweat gland pores (103) are arranged; the microfluidic pipeline (107) connects the sweat gland pores (103) and the sweat outlet (108); and a temperature regulating ball (105) is arranged in the remaining grids of the mesh fence (106); A bionic texture layer (104) is provided on the outer surface of the inner layer (109); a hydrophilic material (102) is sprayed on the bionic texture layer (104) around the sweat gland pores (103); and a hydrophobic material (101) is sprayed on the rest of the bionic texture layer (104) in an alternating manner.

2. The variable configuration prosthetic receiving cavity with directional perspiration function according to claim 1, characterized in that: A friction plate (607) is provided on the inner side surface of the pulley connecting block (606), and a disc spring (605) is provided on the fixed guide rod (603). The disc spring (605) is located between the pulley (602) and the fixed guide rail (601).

3. The variable configuration prosthetic receiving cavity with directional perspiration function according to claim 1, characterized in that: Another short connecting rod (504) is hingedly connected below the short connecting rod (504) through a long connecting rod (507); the side walls of the module bracket (502) corresponding to the upper and lower ends of the short connecting rod (504) below are respectively provided with longitudinal sliding grooves and transverse sliding grooves; the outer side walls of the partition (505) corresponding to the upper and lower ends of the short connecting rod (504) below are respectively provided with longitudinal guide rails (510) and transverse guide rails (511); the upper and lower ends of the short connecting rod (504) below are respectively provided with pins (509); the two ends of the upper pin (509) are respectively embedded in the longitudinal sliding groove and the longitudinal guide rail (510), and the two ends of the lower pin (509) are respectively embedded in the transverse sliding groove and the transverse guide rail (511).

4. The variable configuration prosthetic receiving cavity with directional perspiration function according to claim 1, characterized in that: The interface force film sensor (2) comprises, from bottom to top, a lower PET plate (201), a conductive composite material layer (203), a dielectric layer (204) and a top convex layer (206); a plurality of lower electrodes (202) are arranged between the lower PET plate (201) and the conductive composite material layer (203), and the lower electrodes (202) are connected to the conductive composite material layer (203); a plurality of upper electrodes (205) are arranged between the dielectric layer (204) and the top convex layer (206), and the upper electrodes (205) are connected to the top convex layer (206); the lower electrodes (202) and the upper electrodes (205) are arranged in one-to-one correspondence, and the lower PET plate (201) is connected to the pressing plate (512).

5. The variable configuration prosthetic receiving cavity with directional perspiration function according to claim 4, characterized in that: The upper surface of the dielectric layer (204) is covered with micro-convex bodies, which are pyramid-shaped, with a base length of 100 um and a height of 120 um for each micro-convex body, and a distance between each micro-convex body of 170 um.

6. The variable configuration prosthetic receiving cavity with directional perspiration function according to claim 1, characterized in that: The control module (4) comprises a wireless communication module and a microprocessor module, the wireless communication module adopts a model of MS50SFB1, and the microprocessor module adopts a model of stm32.

7. The variable configuration prosthetic receiving cavity with directional perspiration function according to claim 1, characterized in that: The hydrophilic material (102) sprayed on the bionic texture layer (104) around the sweat gland pore (103) is in a star shape.

8. The variable configuration prosthetic receiving cavity with directional perspiration function according to claim 1, characterized in that: The hydrophilic material (102) is polyvinyl alcohol, the hydrophobic material (101) is polytetrafluoroethylene, and the temperature regulating ball (105) is made of PCM phase change material.

9. The variable configuration prosthetic receiving cavity with directional perspiration function according to claim 1, characterized in that: The microfluidic pipeline (107) is made of oxidized polyethylene, and the inner wall of the microfluidic pipeline (107) is a multi-duckbill-shaped microcavity structure channel.

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