Cold compress device based on traditional chinese medicine decoction

Abstract

The utility model relates to a cold compress device based on traditional Chinese medicine decoction belongs to the medical equipment technical field of external treatment of traditional Chinese medicine, aiming at the problem that traditional cold compress method has poor medicinal effect stability, inconvenient temperature control and uneven liquid permeation, the technical scheme main points of the device are: the flexible cold compress pad body contains silica gel layer, flow guide layer and waterproof isolation film, the flow guide layer has serpentine flow guide groove and guide hole, and the silica gel layer has micropore, the flexible heat preservation structure contains heat preservation layer, semiconductor refrigeration piece group and aluminium foil heat conducting film, is equipped with PID controller, and temperature sensor detects temperature. The device is mainly used for cold compress treatment by traditional Chinese medicine decoction, and is used for cold compress treatment of acute soft tissue injury, inflammatory dermatosis and other diseases in clinical external treatment of traditional Chinese medicine, has the dual effects of antibacterial and anti-inflammatory, cooling and detumescence, can make liquid release uniformly, and accurately control temperature.

Description

Technical Field

[0001] This utility model relates to the field of medical devices for external treatment in traditional Chinese medicine. More specifically, this utility model relates to a cold compress device based on a traditional Chinese medicine decoction. Background Technology

[0002] Traditional Chinese medicine (TCM) cold compress technique involves applying a cold compress of TCM decoction to the affected area. Through transdermal absorption of the medicine and the application of low temperature, it achieves effects such as pain relief, hemostasis, swelling reduction, temperature reduction, and reduction of inflammatory exudation. TCM cold compress technique is simple to operate, safe, reliable, and has significant therapeutic effects, making it suitable for treating various diseases, especially skin diseases, joint pain, and phlebitis. The theoretical basis of TCM cold compress technique originates from TCM, which believes that imbalances in the body's Qi and blood are the main cause of disease. Through TCM cold compress treatment, Qi and blood can be regulated, and Yin and Yang can be balanced, thereby achieving the purpose of treating diseases. Modern medical theory believes that medicine acts directly on the lesion through the skin pores, or enters the internal organs through the skin, thereby achieving the effects of unblocking Qi and blood, clearing meridians, promoting blood circulation, softening and dispersing masses, clearing heat and detoxifying, removing dampness and removing blood stasis, relieving spasms, and alleviating pain.

[0003] Traditional Chinese medicine (TCM) ingredients with blood-activating, stasis-removing, heat-clearing, and detoxifying effects can better penetrate the affected area under the influence of cold compresses, promoting vascular repair and tissue regeneration. Cold compresses can constrict local blood vessels, reduce vascular permeability, and decrease inflammatory exudation, thereby alleviating the inflammatory response and relieving redness, swelling, and pain. TCM considers phlebitis to fall under the categories of malignant veins, vein obstruction, blood vessels, and tendons, resulting from venous trauma, external invasion of heat and toxins damaging the blood vessels, leading to poor local blood circulation and pain. Prolonged poor blood circulation can generate heat, causing local fever, and blood overflowing onto the skin or internal accumulation of heat can cause local redness and congestion. Therefore, TCM herbs with heat-clearing, detoxifying, blood-activating, and pain-relieving effects are selected for treatment. Indications for TCM cold compress techniques include: phlebitis (grades 1-3) caused by central and peripheral venous infusions, radiation dermatitis (grades I-II), early swelling and pain from limb fractures, and early postoperative swelling and pain from hand injuries. Contraindications for traditional Chinese medicine cold compress techniques include: cold syndrome, circulatory disorders, deep purulent lesions in the late stage of acute inflammation, systemic lupus erythematosus (cold allergy), patients with cold limbs and decreased skin sensation.

[0004] The procedure for applying traditional Chinese medicine (TCM) cold compress includes: first, an assessment, including the ward environment, temperature, current main symptoms, medical history, drug allergy history, whether the patient's constitution is suitable for TCM cold compress, and the condition of the skin at the application site (whether there are blisters, scars, ulcers, bleeding, etc.); then, preparing the necessary items, including the TCM decoction, treatment towel, container, tweezers, gauze, treatment tray, syringe, water temperaturer, and plastic wrap; then, applying the cold compress, including cleaning the affected skin with warm water to remove dirt and secretions, ensuring the skin is clean for better absorption of the medicine, testing the temperature of the medicine solution (13~15℃), applying the moistened medicated cloth to the affected area (closely adhering to the skin), and covering and securing it with a plastic wrap; informing the patient of precautions, including the application time, informing the nurse immediately if any discomfort occurs, and that the TCM may cause skin discoloration, which will fade on its own after several days.

[0005] In the field of medical care, cold compresses are a common treatment method, especially when using traditional Chinese medicine decoctions for cold compress therapy. This allows the pharmacological effects of the herbs to be combined with the physical effects of cold compresses, resulting in good effects in relieving pain, reducing swelling, and alleviating bruising. However, existing cold compress devices based on traditional Chinese medicine decoctions have many problems.

[0006] Firstly, regarding the distribution of traditional Chinese medicine decoctions, traditional devices struggle to ensure the even application of the medicinal solution to the skin surface. This is because their structural design is inadequate, lacking effective diversion and diffusion mechanisms. For example, some devices simply soak the decoction in ordinary dressings, causing the solution to accumulate locally, preventing other areas of skin from fully contacting the solution and thus affecting the therapeutic effect. Furthermore, the lack of a proper diversion structure can lead to leakage during use, resulting in waste and environmental pollution.

[0007] Secondly, temperature control is another shortcoming of existing devices. The temperature of the cold compress has a significant impact on the therapeutic effect. If the temperature is too high, the physical effect of the cold compress cannot be achieved; if the temperature is too low, it may cause frostbite to the skin. Most existing devices lack precise temperature control functions, making it difficult to flexibly adjust according to different treatment needs and patient tolerance. The technology of using a PID controller to control the start and stop operation of the semiconductor cooling module based on the temperature detected by the temperature sensor is already very mature. Therefore, this technology can be applied to the cold compress device to control the temperature of the medication and stabilize the cold compress temperature.

[0008] Furthermore, traditional devices also have shortcomings in terms of comfort and convenience. Some devices are not securely fixed and are prone to shifting or falling off during use, affecting the continuity of treatment. In addition, some devices are made of materials with poor breathability, which can cause the skin to feel stuffy and uncomfortable after prolonged wear, and may even lead to skin allergies and other problems.

[0009] Solving these problems presents numerous challenges. Structural design requires comprehensive consideration of multiple factors, including drug delivery, temperature control, and wearing comfort, demanding high levels of design rationality and innovation. Material selection is challenging, as finding materials that meet both medical safety standards and the device's functional requirements is no easy task. Technically, achieving precise temperature control and effective heat dissipation necessitates advanced electronic and refrigeration technologies, placing high demands on research and development costs and technical expertise. Utility Model Content

[0010] One object of this invention is to solve at least the problems described above and to provide at least the advantages that will be explained later.

[0011] To achieve these objectives and other advantages according to the present invention, a cold compress device based on a traditional Chinese medicine decoction is provided, comprising:

[0012] A flexible cooling pad includes a silicone layer in contact with the skin, a flow-guiding layer applied to the silicone layer, and a waterproof isolation membrane covering the flow-guiding layer and circumferentially sealed to the silicone layer. The flow-guiding layer has serpentine faceted flow-guiding grooves, and multiple guide holes are formed at the bottom of the flow-guiding grooves. The silicone layer has micropores for releasing medication. The waterproof isolation membrane has an injection port, and a puncture diaphragm is embedded in the injection port. The lower part of the puncture diaphragm is connected to the flow-guiding groove.

[0013] A flexible thermal insulation structure is detachably installed on the outside of the waterproof isolation membrane. The flexible thermal insulation structure includes an outer thermal insulation layer, a middle semiconductor cooling chip assembly, an inner aluminum foil thermal conductive film, and a waterproof cloth wrapped around the outer surface of the thermal insulation layer and the aluminum foil thermal conductive film. A PID controller, a temperature display screen, and operation buttons are integrated on the thermal insulation layer. The PID controller is connected to the semiconductor cooling chip assembly through a bendable circuit embedded in the thermal insulation layer.

[0014] At least one temperature sensor, the sensing end of which is sealed through the aluminum foil thermal conductive film and the waterproof cloth and contacts the surface of the waterproof isolation film, the temperature sensor being connected to the PID controller via a bendable circuit.

[0015] Preferably, elastic straps are provided on both sides of the insulation layer, and the ends of the elastic straps are provided with matching nylon Velcro. A breathable mesh with a width of 20-35mm is embedded in the middle of the elastic straps.

[0016] Preferably, the thickness of the silicone layer is 1-2 mm, the micropores of the silicone layer are arranged in an alternating hexagonal honeycomb structure, the diameter of a single micropore is 0.5-1 mm, and the center-to-center distance between adjacent micropores is 0.3-0.5 mm.

[0017] Preferably, the material of the flow guiding layer is medical non-woven fabric, the spacing of the flow guiding grooves is 3~5mm, the diameter of the guide hole is 0.5~1mm, and the distribution rate of the guide hole is greater than the distribution rate of the micropore.

[0018] Preferably, the cold end face of the semiconductor cooling chip assembly is bonded to the aluminum foil thermal conductive film via a thermally conductive silicone grease layer, and the hot end face of the semiconductor cooling chip assembly is connected to an aluminum heat sink fin assembly.

[0019] Preferably, a heat dissipation duct is provided at the bottom of the insulation layer, the heat dissipation duct is connected to the aluminum heat dissipation fin assembly, a miniature fan is installed in the heat dissipation duct, and the air inlet of the miniature fan is provided with a stainless steel dustproof mesh with a certain aperture.

[0020] Preferably, an adhesive tape with a width of 3-6 mm is provided between the edge of the waterproof isolation membrane and the edge of the silicone layer.

[0021] Preferably, the detection end of the temperature sensor is surrounded by an annular thermally conductive silicone sealing ring, the annular thermally conductive silicone sealing ring having an outer diameter of 5~8mm and an inner diameter of 3~4mm, and the contact surface between the annular thermally conductive silicone sealing ring and the waterproof isolation membrane is provided with an anti-slip grid pattern with a depth of 0.1~0.3mm.

[0022] Preferably, an over-temperature protection circuit module is provided between the PID controller and the semiconductor cooling chip assembly, which triggers a power cut-off mechanism when the detected temperature is below 3°C.

[0023] Preferably, the waterproof barrier membrane is made of polyethylene film.

[0024] This utility model has at least the following beneficial effects:

[0025] First, the technical solution of the cold compress device proposed in this application has significant advantages in terms of drug flow, temperature control, wearing experience, structural design, safety protection and cost-effectiveness, which can effectively improve the effect of cold compress treatment and bring a better experience to patients.

[0026] Secondly, the flexible cooling pad's guiding layer features serpentine guiding grooves and guide holes, while the silicone layer has staggered hexagonal honeycomb micropores, with the guide hole distribution rate exceeding the micropore distribution rate. This design allows the traditional Chinese medicine decoction to be evenly released onto the skin surface. The medical non-woven fabric of the guiding layer absorbs and slowly releases the medicine, ensuring uniform drug distribution, improving drug utilization and therapeutic effect. For example, it can stabilize the drug diffusion rate within a certain range, significantly increasing the effective drug penetration area.

[0027] Third, the flexible insulation structure is equipped with a PID controller, temperature sensor, and semiconductor cooling chip assembly to achieve precise closed-loop temperature control with an accuracy of ±0.5℃. The semiconductor cooling chip assembly, in conjunction with aluminum foil thermal conductive film, aluminum heat dissipation fins, heat dissipation ducts, and a micro fan, enables efficient cooling and heat dissipation, ensuring stable cold compress temperature and maintaining a low-temperature environment (temperature ranges can be set as needed, such as 4~15℃, 10~15℃, 13~15℃), meeting the needs of traditional Chinese medicine cold compress therapy.

[0028] Fourth, the elastic straps and nylon Velcro on both sides of the insulation layer facilitate the fixation of the device and prevent displacement; the breathable mesh embedded in the middle of the elastic straps increases breathability and reduces the feeling of stuffiness on the skin. The elastic straps have a high tensile recovery rate, the staggered bonding of the Velcro ensures even distribution of binding pressure, and the breathable mesh undergoes a double-reinforcement process, resulting in a long service life and improving patient comfort and convenience.

[0029] Fifth, the waterproof isolation membrane and silicone layer are circumferentially sealed, with adhesive tape at the edges. A puncture diaphragm is embedded in the injection port to prevent drug leakage. The annular thermally conductive silicone sealing ring and anti-slip mesh design at the temperature sensor detection end ensure accurate temperature detection, thereby guaranteeing precise temperature control. All components are made from appropriate materials; for example, the waterproof isolation membrane uses polyethylene film, which meets medical safety standards and satisfies the functional requirements of waterproofing and leak-proofing.

[0030] Sixth, an over-temperature protection circuit module is installed between the PID controller and the semiconductor cooling chip assembly. When the detected temperature drops below 3°C, a power-off mechanism is triggered to prevent frostbite to the patient's skin and improve safety. Multiple tests have verified that the protection system responds quickly, has high detection accuracy, and a low false alarm rate.

[0031] Seventh, the flexible cold compress pad is a disposable product, using low-cost materials such as non-woven fabric for the diversion layer and polyethylene film for the waterproof isolation membrane to reduce costs; the flexible insulation structure is a reusable device, using waterproof fabric and other designs to extend its service life, and from a long-term use perspective, it has good cost-effectiveness.

[0032] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0033] Figure 1 This is a top view of the cold compress device according to one of the technical solutions of this utility model;

[0034] Figure 2 This is a detailed view of the flexible thermal insulation structure according to one of the technical solutions of this utility model;

[0035] Figure 3This is a top view of the flexible cooling pad body according to one of the technical solutions of this utility model;

[0036] Figure 4 This is a side view of the flexible cooling pad body according to one of the technical solutions of this utility model.

[0037] The following are the reference numerals in the instruction manual's attached drawings: Flexible cooling pad 100, silicone layer 11, flow guiding layer 12, waterproof isolation membrane 13, flow guiding channel 14, flexible thermal insulation structure 200, thermal insulation layer 21, semiconductor cooling chip assembly 22, aluminum foil thermal conductive film 23, waterproof cloth 24, PID controller 25, temperature display screen 26, operation buttons 27, temperature sensor 28, elastic strap 29, heat dissipation duct 1, aluminum heat dissipation fin assembly 2, miniature fan 3, dustproof net 4. Detailed Implementation

[0038] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0039] It should be noted that, unless otherwise specified, the experimental methods described in the following embodiments are all conventional methods, and the reagents and materials described are all commercially available unless otherwise specified. In the description of this utility model, the orientation or positional relationship indicated by the terms is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0040] like Figures 1-4 As shown, this utility model provides a cold compress device based on traditional Chinese medicine decoction, comprising:

[0041] The flexible cooling pad 100 includes a silicone layer 11 that contacts the skin, a flow-guiding layer 12 applied to the silicone layer 11, and a waterproof isolation membrane 13 covering the outside of the flow-guiding layer 12 and circumferentially sealed to the silicone layer 11. The flow-guiding layer 12 has serpentine faceted flow-guiding channels 14, with multiple guide holes at the bottom of the channels 14. The silicone layer 11 has micropores for releasing medication. An injection port is located at the top of the flow-guiding layer 12 on the waterproof isolation membrane 13. A puncture diaphragm is embedded in the injection port, and the lower part of the puncture diaphragm is connected to the inlet of the flow-guiding channel 14. Furthermore, the outer edge of the waterproof isolation membrane 13 can extend appropriately beyond the silicone layer 11 to further reduce medication leakage during application. Since the flexible cooling pad 100 is a disposable item, it is preferably made of low-cost materials, such as non-woven fabric for the flow-guiding layer 12 and polyethylene film for the waterproof isolation membrane 13.

[0042] The flexible insulation structure 200 includes a detachable installation on the outside of the waterproof isolation membrane 13. The flexible insulation structure 200 includes an outer insulation layer 21, a middle semiconductor cooling chip assembly 22, an inner aluminum foil thermal conductive film 23, and a waterproof cloth 24 covering the outer surfaces of the insulation layer 21 and the aluminum foil thermal conductive film 23. The insulation layer 21 integrates a PID controller 25, a temperature display screen 26, and operation buttons 27. The PID controller 25 is connected to the semiconductor cooling chip assembly 22 through a bendable circuit embedded in the insulation layer 21. The flexible insulation structure 200 is a reusable device; therefore, the use of the waterproof cloth 24 facilitates cleaning and waterproofing, extending the service life of the flexible insulation structure 200.

[0043] At least one temperature sensor 28, the sensing end of which is sealed through the aluminum foil thermal conductive film 23 and the waterproof cloth 24 and in contact with the surface of the waterproof isolation membrane 13, the temperature sensor 28 being connected to the PID controller 25 via a bendable circuit.

[0044] In the above technical solution, the design of the flexible cooling pad 100 and the flexible heat-insulating structure 200 effectively combines traditional Chinese medicine decoction for cold compress therapy. The structural design of the flexible cooling pad 100 allows the traditional Chinese medicine decoction to be evenly released onto the skin surface, fully maximizing its medicinal effects. The flexible heat-insulating structure 200, in conjunction with the temperature sensor 28 and the PID controller 25, can precisely control the cooling temperature, ensuring the therapeutic effect. Simultaneously, the flexible design allows for better conformation to human skin, improving patient comfort.

[0045] Specifically, the spacing of the flow channels 14 in the flow guiding layer 12 (referring to the width of the flow channels 14) can be selected from three implementation schemes: 3mm, 4mm, or 5mm. The diameter of the guide hole can be selected from three specifications: 0.5mm, 0.8mm, or 1mm. The material of the flow guiding layer 12 can be medical non-woven fabric. The inner diameter of the injection interface can be designed to be 6mm, 8mm, or 10mm. The interface body can be made of medical-grade polycarbonate injection molding, and the material conforms to USP Class VI standards. The assembly position of the interface and the flow guiding layer 12 is as follows: the bottom extension of the interface is inserted into the top surface of the flow guiding layer 12 to a depth of 1-2mm. The flow channel 14 can be formed by opening grooves in the silicone layer 11, and the flow guiding layer 12 (non-woven fabric) is laid in the grooves to form the flow channel 14. The puncture diaphragm can be the FM259 type bromobutyl rubber septum from Westlife Pharmaceuticals Packaging. The assembly position of the flow guiding layer 12 and the silicone layer 11 is as follows: the lower surface of the flow guiding layer 12 and the upper surface of the silicone layer 11 are bonded together using medical-grade silicone adhesive. Microhole processing can be performed using laser drilling technology with a Trumpf TruMark3330 laser machine, and the hole diameter error is controlled within ±0.02mm.

[0046] The thermoelectric cooler assembly 22 can be a TES1-007015 8×8mm miniature thermoelectric cooler with a rated voltage of 0.82V and a rated current of 1.5A. The aluminum foil thermal conductive film 23 can be selected in three thicknesses: 0.08mm, 0.1mm, or 0.12mm. The PID controller 25 can be an Omron E5CC-QX2D digital controller, and the temperature display 26 is an OLED display with three sizes: 0.96 inches, 1.3 inches, or 1.54 inches. The cold end of the thermoelectric cooler is bonded to the aluminum foil thermal conductive film 23 with thermal grease, and the hot end is connected to the heat sink fins with 3M 8810 thermal conductive tape. The heat sink fins can be aluminum heat sinks with dimensions of 9mm×9mm×3mm. During assembly, the thermoelectric cooler assembly 22 is arranged in an array with a center-to-center spacing of 50mm, and the wiring to the PID controller 25 uses AWG22 silicone insulated wires.

[0047] Temperature sensor 28 can be a Texas Instruments TMP117 digital sensor with a detection accuracy of ±0.1℃. The outer diameter of the annular thermally conductive silicone sealing ring can be selected from three specifications: 5mm, 6mm, or 7mm. The installation position of temperature sensor 28 is set at 20mm from the end of the guide groove 14, and the insertion depth of the temperature sensor 28 detection head is 0.5mm. Signal transmission uses a four-core shielded cable (model BELDEN 8770) with an outer diameter of 2.8mm and a bending radius ≥15mm.

[0048] Specifically, the PID controller 25, temperature sensor 28, temperature display screen 26, and thermoelectric cooling chip assembly 22 can be powered in the following ways:

[0049] DC Power Supply: A DC power adapter converts AC mains power (usually 220V) to a suitable DC voltage to power various devices. This method provides stable power with minimal voltage fluctuations. Choose the appropriate DC power adapter based on the voltage and current requirements of the device. For example, if the device requires 12V DC power, select a power adapter with a 12V output and sufficient current to meet the device's overall needs. Common specifications include 10W and 20W output power, which can be selected based on the actual load power. Linear Regulator or Switching Regulator: For a more stable voltage output, a linear regulator or switching regulator can be added after the power adapter. Linear regulators such as the LM7805 can stabilize the input voltage at a 5V output, suitable for sensors or chips with high voltage accuracy requirements. Switching regulators such as the LM2596 are highly efficient and can convert the input voltage to different stable output voltages, suitable for systems with various voltage requirements.

[0050] Battery Powered: This system uses batteries for power, offering portability and suitability for situations requiring mobile use or where mains power is unavailable. Lithium-ion battery packs offer advantages such as high energy density and low self-discharge rate. For example, a battery pack composed of multiple 18650 lithium-ion batteries can be connected in series or parallel to meet different voltage and capacity requirements. Common voltage levels include 12V and 24V, with capacities ranging from several thousand mAh to tens of thousands of mAh. A battery charger is used to charge the lithium-ion battery pack; a suitable charger must be selected based on the battery pack's specifications. For example, for a 12V lithium-ion battery pack, a charger with an output voltage of approximately 14.4V and a suitable charging current can be selected to ensure safe and rapid charging. A power management chip is used to monitor battery level, control the charging process, and protect the battery from damage caused by overcharging, over-discharging, and overcurrent. For example, Texas Instruments' BQ24195 chip enables precise charging management of lithium-ion batteries.

[0051] In practical applications, the appropriate power supply method and components can be selected by comprehensively considering factors such as the specific usage scenario, equipment power requirements, and cost.

[0052] Specifically, the insulation layer 21 uses rubber-plastic sponge as its main material. Rubber-plastic sponge has an excellent closed-cell structure, resulting in extremely low thermal conductivity, effectively preventing heat transfer and ensuring stable internal temperature of the cooling device, greatly reducing the impact of the external environment on the cooling temperature. Simultaneously, it possesses excellent flexibility, allowing it to closely conform to various irregular body parts, significantly enhancing the user experience. Furthermore, rubber-plastic sponge has good flame-retardant properties, making it less prone to combustion and reducing safety risks during use. In the design of the insulation layer, multiple fine wire grooves are built-in through a precise molding process. These grooves accommodate the bendable circuitry connecting the PID controller 25, temperature display screen 26, operation buttons 27, and semiconductor cooling chip assembly 22. This design not only avoids the risk of damage caused by exposed circuitry but also makes the overall layout more compact and rational, further optimizing the device's performance and appearance.

[0053] The cold compress device of this application enables uniform low-temperature penetration of traditional Chinese medicine decoctions. The combined design of the flow channel 14 and micropores controls the diffusion rate of the medicine within the range of 0.1~0.3ml / min. The temperature control accuracy of the flexible heat-insulating structure 200 can reach ±0.5℃, and closed-loop control is achieved in conjunction with the temperature sensor 28. The medical non-woven fabric flow layer 12 can absorb and slowly release the medicine, and the honeycomb microporous structure increases the skin contact area by more than 40%. The entire device can maintain a low-temperature environment of 4~10℃, meeting the needs of traditional Chinese medicine cold compress therapy.

[0054] Furthermore, in another technical solution, elastic bands 29 are provided on both sides of the insulation layer 21, and the ends of the elastic bands 29 are provided with matching nylon Velcro. A breathable mesh with a width of 20-35mm is embedded in the middle of the elastic bands 29. Multiple sets of elastic bands 29 can be set according to the area to be covered by the medication.

[0055] In the above technical solution, the elastic straps 29 and nylon Velcro design on both sides of the insulation layer 21 facilitate the secure fixation of the cooling device to the human body, preventing displacement during use. The breathable mesh fabric in the middle of the elastic straps 29 increases breathability, reduces skin stuffiness, and improves patient comfort.

[0056] Specifically, the elastic bandage 29 can be selected in three widths: 50mm, 60mm, or 70mm, with an elongation rate controlled within the range of 150%~200%. The bandage material can be medical-grade spandex composite fabric with a tensile strength ≥45N / cm. The bandage is assembled with the insulation layer 21 as follows: the base of the bandage is fixed to the side of the insulation layer 21 within a 15mm width range using double-row overlock stitching (2.5mm thread spacing), with polyester thread used for the stitching. The end of the bandage is heat-pressed and bound with a width of 3mm, using a heat-sealing machine to press for 2 seconds at 180℃.

[0057] The hook side of the hook and loop fastener can be made of 25mm wide 3M SJ3550, while the loop side uses the same series SJ3551. The adhesive strength should be ≥1.2N / cm². The hook and loop fastener should be sewn onto the back of the end of the strap in a 30mm length, and the loop side should be placed on the front of the middle section of the strap in a 50mm length. Use a Z-shaped stitch pattern with a stitch density of 8 stitches / inch and adjust the thread tension to 4N. The adhesion test should be performed according to ASTM D5169 standard, maintaining over 90% adhesion after 100 opening and closing cycles under a 5kg load.

[0058] The breathable mesh fabric can be designed in three widths: 20mm, 30mm, or 35mm, with a mesh density of 25-30 holes / cm². The material can be Coolmax functional polyester mesh fabric with a breathability ≥8000g / m² / 24h. The breathable mesh fabric is embedded in the center of the strap, with a 5mm seam allowance on both sides, and is connected to the strap body using a double-needle overlock stitch (3mm stitch spacing). The breathable mesh fabric area undergoes tear-resistant treatment by soaking in a tear-resistant agent, significantly improving tear strength after treatment.

[0059] The elastic strap 29 of this application enables ventilation and heat dissipation at the contact area, and the breathability of the breathable mesh area is 3 to 5 times higher than that of ordinary straps. The tensile recovery rate of the elastic strap 29 remains above 85% after 100 tensile cycles, and the staggered bonding design of the Velcro ensures that the binding pressure is evenly distributed within the range of 15 to 25 mmHg. The double reinforcement process of the breathable mesh extends the service life to more than 200 washing cycles while maintaining the integrity of the mesh structure.

[0060] Furthermore, in another technical solution, the thickness of the silicone layer 11 is 1~2mm, the micropores of the silicone layer 11 are arranged in an interlaced hexagonal honeycomb structure, the diameter of a single micropore is 0.5~1mm, and the center-to-center distance between adjacent micropores is 0.3~0.5mm.

[0061] In the above technical solution, the micropores of the silicone layer 11 are arranged in an interlaced hexagonal honeycomb structure, and the reasonable setting of the diameter of a single micropore and the center-to-center distance between adjacent micropores can ensure that the traditional Chinese medicine decoction is evenly released onto the skin surface, thereby improving the utilization rate of the drug and the therapeutic effect.

[0062] Specifically, the processing mold for the hexagonal honeycomb structure can be machined using a CNC engraving machine with a 0.1mm diameter tungsten carbide end mill. The distribution density of the honeycomb structure on the silicone layer 11 can be set to 12-15 hexagonal units per square centimeter.

[0063] Micropore diameters are available in 0.5mm, 0.8mm, or 1mm, with processing tolerances controlled within ±0.05mm. Laser drilling can be used. Hole diameter is measured using a Keyence VHX-7000 digital microscope at 50x magnification, measuring the pore size in three different directions. Dow Corning MDX4-4210 medical-grade liquid silicone can be used as the raw material, with a Shore A hardness of 35±2 and tensile strength ≥8MPa after curing.

[0064] The center-to-center spacing between adjacent micropores can be set to three options: 0.35mm, 0.40mm, or 0.45mm, with spacing deviation controlled within ±0.02mm. The cell array layout is generated using AutoCAD 2024 software, and the resulting DXF file is exported for laser processing. Spacing verification is performed using a 2D image measuring instrument, with a sampling inspection rate of no less than 5%. The thickness of the silicone layer 11 can be set to 1.2mm, 1.5mm, or 1.8mm, with a micropore depth ratio of 3:1 to 5:1, ensuring structural strength while maintaining drug permeability.

[0065] The microporous structure of this application allows the drug diffusion rate to be stabilized within the range of 0.08~0.15 ml / cm² / min, and the hexagonal arrangement increases the effective drug penetration area to over 75%. The 0.4 mm spacing ensures that the pore structure remains intact while controlling the tensile deformation rate to within 5%. The honeycomb layout improves the uniformity of surface contact pressure distribution by 40%. According to GB / T 42062 testing, this structure maintains a micropore diameter change rate of <3% after 200 bending cycles.

[0066] Furthermore, in another technical solution, the material of the flow guiding layer 12 is medical non-woven fabric, the spacing of the flow guiding grooves 14 is 3~5mm, the diameter of the guide hole is 0.5~1mm, and the distribution rate of the guide hole is greater than the distribution rate of the micropore.

[0067] In the above technical solution, the guide layer 12 is made of medical non-woven fabric, and the reasonable setting of the spacing, diameter and density of the guide holes of the guide grooves 14 enables the traditional Chinese medicine decoction to flow evenly in the guide layer 12, ensuring that the medicine is evenly distributed on the cold compress pad and improving the treatment effect.

[0068] Specifically, the flow-guiding layer 12 medical nonwoven fabric is formed through a hot air penetration process, with fiber diameters distributed in the range of 15~25μm. The liquid absorption performance of the flow-guiding layer 12 material can be tested according to the YY / T 0471.3 standard, with a liquid absorption capacity of ≥8g / 100cm² in 10 seconds.

[0069] The spacing of the guide channels 14 can be set to three implementation schemes: 3.2mm, 4.0mm, or 4.8mm, with the channel depth controlled within the range of 0.5~0.7mm. The direction of the guide channels 14 forms a 45° angle with the mechanical direction of the nonwoven fabric, and the parallelism error between adjacent channels is ≤0.1mm / m. The channel cross-section has a U-shaped structure, with a bottom corner radius R0.2mm and a sidewall inclination angle of 85±2°. The channel layout density is verified using a grid analysis method, sampling and testing 5 points within a 10×10cm area.

[0070] The guide hole diameter can be selected from three specifications: 0.6mm, 0.8mm, or 0.9mm, with the holes arranged in a 6×6 pattern. A laser drilling machine is used during processing, with a pulse frequency set to 5kHz and a single pulse energy of 3mJ. Hole density is controlled to three schemes: 5, 6, or 7 holes per square centimeter, with an actual distribution deviation ≤±5%. Hole diameter is measured using a Keyence VHX-7000 digital microscope at 50x magnification in three orthogonal directions.

[0071] The flow-guiding layer 12 structure of this application can stabilize the drug diffusion rate within the range of 0.5~1.2 ml / min, and the 4 mm spacing of the flow-guiding channels 14 improves the uniformity of surface tension distribution by 30%. The density setting of 6 holes per square centimeter ensures that the effective flow-guiding area accounts for more than 45%, while maintaining a tensile strength of ≥15 N / cm. The fiber porosity formed by the hot air penetration process is 62±3%, and the liquid absorption rate is 50% higher than that of ordinary non-woven fabrics. After 200 bending tests, the deformation of the flow-guiding channel 14 is <0.15 mm, and the diameter retention rate of the guide holes is >95%.

[0072] Furthermore, in another technical solution, the cold end face of the semiconductor cooling chip assembly 22 is bonded to the aluminum foil thermally conductive film 23 through a thermally conductive silicone grease layer with a thickness of 1~1.5mm, and the hot end face of the semiconductor cooling chip assembly 22 is connected to the aluminum heat dissipation fin assembly 2, with a fin spacing of 1.5~2mm. Furthermore, the aluminum heat dissipation fin assemblies 2 can be connected by springs to enhance the stability of the aluminum heat dissipation fin assemblies 2.

[0073] In the above technical solution, the semiconductor cooling chip assembly 22 is bonded to the aluminum foil thermal conductive film 23 through a thermally conductive silicone grease layer and connected to the aluminum heat sink fin assembly 2, which can improve the cooling effect and heat dissipation efficiency, ensure the stability of the cooling temperature, and extend the service life of the semiconductor cooling chip assembly 22.

[0074] Specifically, Shin-Etsu Chemical's X-23-7762 thermal grease can be used on the cold end face, with a thermal conductivity of 6.0 W / m·K and a viscosity of 2800 Pa·s. The grease layer thickness can be set to 1.0 mm, 1.2 mm, or 1.5 mm, with the coating uniformity deviation controlled within ±0.05 mm. The bonding process uses an automatic dispensing machine, with a dispensing pressure set to 0.25 MPa, and the curing conditions are 30 minutes at 25°C. The contact area coverage between the cold end face and the aluminum foil thermal conductive film 23 must be ≥98%, and the interface thermal resistance test can be performed according to ASTM D5470 standard, with a measured value ≤0.08℃·cm² / W.

[0075] The hot end face can be bonded to the aluminum heat sink fin assembly 2 using 3M 8810 thermally conductive tape, with a tape thickness of 0.25mm and a peel strength ≥2.0N / cm. The heat sink fin material can be 6030 aluminum alloy, and the positional deviation between the heat sink fin assembly and the hot end face of the semiconductor cooling chip should be controlled within ±0.2mm.

[0076] The heat dissipation fin spacing can be set to three implementation schemes: 1.5mm, 1.8mm, or 2.0mm. The fin surface is anodized with a film thickness of 15~20μm and a surface roughness Ra of 0.8~1.2μm. Spacing is measured using a Nikon NEXIV VMZ-S4540 2D image measuring instrument, with a sampling rate of 5 points per square meter. The airflow design adopts a staggered arrangement, with the misalignment of adjacent fins controlled within 30%~40% of the fin width. Airflow resistance tests show a pressure drop ≤12Pa / m. A 0.3mm radius rounded corner is provided at the fin root, reducing the stress concentration factor to below 1.2.

[0077] Furthermore, in the semiconductor cooling system, the aluminum heat sink fin assembly 2 plays a crucial role in heat dissipation. To effectively enhance the stability of the aluminum heat sink fin assembly 2, an effective method is to use spring connections between the heat sink fins.

[0078] Each aluminum heat sink fin has a pre-drilled connection hole of a specific size. A specially designed spring has hooks at both ends that match the connection holes. During installation, the hooks at both ends of the spring are firmly hooked into the connection holes of adjacent heat sink fins. Due to the elastic tension of the spring itself, adjacent heat sink fins are tightly pulled together. During system operation, even under external vibration, the spring can effectively buffer the vibration energy through its own expansion and contraction, preventing misalignment or loosening between the heat sink fins. The semiconductor cooling assembly 22 is typically installed at a specific position on the aluminum heat sink fin assembly 2. With the stability of the aluminum heat sink fin assembly 2 significantly improved, the risk of the semiconductor cooling assembly 22 shifting due to vibration or other external forces is also significantly reduced. A stable semiconductor cooling assembly 22 ensures sufficient contact between the cooling surface and the heat source, thereby guaranteeing the efficient and stable operation of the semiconductor cooling system.

[0079] This technical solution can improve the heat transfer efficiency of the cold end face to over 92%, and control the interface temperature difference within 0.5℃. The 1.2mm silicone grease layer remains intact and bonded after 50 thermal cycles, without delamination. The 2.0mm fin spacing design achieves a heat dissipation efficiency of 35W / m·K, with a hot end temperature rise of ≤8℃ when combined with forced convection. Anodizing treatment increases the surface emissivity of the fins to 0.85, and increases the natural convection heat dissipation capacity by 20%. After 200 hours of continuous operation testing, the hot end temperature fluctuation range of the cooler is ±1.5℃, and there is no visible deformation of the fin structure.

[0080] Furthermore, in another technical solution, a heat dissipation duct 1 is provided at the bottom of the insulation layer 21, the heat dissipation duct 1 is connected to the aluminum heat dissipation fin assembly 2, a miniature fan 3 with a diameter of 30mm is installed in the heat dissipation duct 1, the air inlet of the miniature fan 3 is provided with a stainless steel dustproof mesh 4 with a hole diameter of 0.5~0.8mm, the channel height of the heat dissipation duct 1 is 5~8mm, and the thickness of the insulation layer 21 is 5~15mm.

[0081] In the above technical solution, the design of the heat dissipation duct 1 and the micro fan 3 at the bottom of the insulation layer 21 can effectively dissipate the heat generated by the semiconductor cooling chip assembly 22, avoiding overheating that could affect cooling efficiency and service life. The stainless steel dust filter 4 at the air inlet of the micro fan 3 can prevent dust from entering and ensure the unobstructed flow of the heat dissipation duct 1.

[0082] Specifically, the heat dissipation duct 1 can be located at the center of the bottom of the insulation layer 21, and the duct height can be set to 5.5mm, 6.5mm, or 7.5mm. The inner wall of the heat dissipation duct 1 can be injection molded from ABS engineering plastic with a surface roughness Ra≤3.2μm. A gradually expanding structure is set at the connection between the heat dissipation duct 1 and the aluminum heat dissipation fin assembly 2, with an inlet width of 20mm and an outlet width extending to 35mm (gradually changing from parallel to the insulation layer 21 to perpendicular to the insulation layer 21 to accommodate the thickness of the insulation layer 21), with an expansion angle of 12°. Guide ribs are set inside the heat dissipation duct 1, with a rib height of 2mm, a spacing of 15mm, and an angle of 30° with the airflow direction. Pressure loss testing is conducted using a wind tunnel experimental setup, and the pressure drop is measured to be ≤8Pa under a wind speed of 3m / s.

[0083] The fan can be a Delta AFB03024HA axial fan, 30mm in diameter, rated voltage 12VDC, with a maximum airflow of 4.8CFM. During installation, it is fixed to the air duct inlet with four M2 stainless steel screws, spaced in a 12mm x 12mm square array. The deviation between the fan axis and the air duct centerline should be controlled within ±0.5mm, and the distance between the impeller end face and the air duct inlet plane should be set to 3mm. Electrical connections use AWG24 silicone wire, with a 50mm allowance in wire length and a bending radius ≥15mm. The miniature fan speed can be adjusted via PWM signal, with an adjustment range of 1500~4500RPM.

[0084] The dustproof mesh 4 can be made of 304 stainless steel woven mesh, with aperture sizes of 0.55mm, 0.65mm, or 0.75mm. The dustproof mesh 4 is fixed by a ring-shaped pressure frame, 3mm wide and 0.8mm thick, and connected to the duct inlet face using laser welding. The mesh tension is controlled within the range of 15~20N / cm², and is measured at the four corner points using a tension meter. A 0.2mm thick silicone sealing strip is installed at the edge of the dustproof mesh 4, with a compression set at 30% and a Shore hardness of 50±5HA. Dustproof efficiency testing is conducted according to ISO16890 standard, with an interception efficiency of ≥85% for PM2.5 particles.

[0085] This technical solution ensures a stable airflow velocity within the range of 2.5~3.2 m / s, and the 6.5mm airflow height design reduces flow resistance by 18%. The axial fan generates an effective airflow of 4.2 CFM at 3000 RPM, with a noise level ≤28 dB(A). The 0.65mm dust filter with 4 pores maintains 85% airflow permeability while blocking over 98% of particles larger than 100μm. The airflow guide fins improve airflow uniformity to over 90%, and the temperature difference of the heatsink fins is controlled within ±1.2℃. After 72 hours of continuous operation testing, the temperature rise rate of the cooling system is ≤0.5℃ / h, and the dust accumulation on the dust filter is <0.15g / m²·h.

[0086] Furthermore, in another technical solution, an adhesive strip with a width of 3-6 mm is provided between the edge of the waterproof isolation membrane 13 and the edge of the silicone layer 11 to prevent the traditional Chinese medicine liquid from leaking out.

[0087] Furthermore, in another technical solution, the detection end of the temperature sensor 28 is surrounded by an annular thermally conductive silicone sealing ring. The annular thermally conductive silicone sealing ring has an outer diameter of 5~8mm and an inner diameter of 3~4mm. The contact surface between the annular thermally conductive silicone sealing ring and the waterproof isolation membrane 13 is provided with an anti-slip grid pattern with a depth of 0.1~0.3mm.

[0088] In the above technical solution, the design of the annular thermally conductive silicone sealing ring and the anti-slip mesh pattern around the detection end of the temperature sensor 28 can ensure good contact between the temperature sensor 28 and the waterproof isolation membrane 13, improve the accuracy of temperature detection, and thus ensure the precise temperature control of the PID controller 25.

[0089] Specifically, the outer diameter of the sealing ring can be selected from three specifications: 5.0mm, 6.5mm, or 7.5mm, and the inner diameter is set to 3.0mm, 3.5mm, or 4.0mm accordingly. The cross-sectional shape adopts a rectangular structure, and the thickness can be set to 1.0mm, 1.2mm, or 1.5mm. The sealing ring material can be Shin-Etsu KE-951U type thermally conductive silicone, with a thermal conductivity of 1.2W / m·K and a tensile strength ≥3.5MPa. During assembly, the inner hole of the sealing ring is interference-fitted with the detection end of the temperature sensor 28, and the interference is controlled within the range of 0.05~0.08mm. The sealing ring compression is set to 0.3mm, and it is fixed by circumferential dispensing of instant adhesive with a dispensing interval of 3mm.

[0090] The Shore hardness of the thermally conductive silicone can be set to 30±5HA, and the volume resistivity ≥1×10⁻⁶. 14 Ω·cm. Material mixing was performed using a Baohua BH-10 internal mixer for 15 minutes, with vulcanization at 120℃ for 10 minutes. The sealing ring surface underwent plasma treatment at 300W for 90 seconds to achieve a surface tension of over 38 mN / m. Biocompatibility testing was conducted according to ISO 10993 standards, with a cytotoxicity level of 0. The contact pressure between the sealing ring and the waterproof isolation membrane 13 was tested using pressure-sensitive paper and controlled within the range of 8–12 kPa.

[0091] The anti-slip mesh pattern can be designed as a regular hexagonal array with a side length of 0.2mm, and the texture depth can be selected from three options: 0.15mm, 0.2mm, or 0.25mm. The processing mold is machined using precision machine tools, with a sidewall inclination angle of 85±2° and a bottom corner radius of R0.05mm. The mesh distribution density is 4-6 units per square millimeter, and the texture area is controlled between 18% and 22%. Anti-slip performance is tested using the inclined plane sliding method, with a sliding resistance ≥1.8N / cm² measured at a 30° inclination angle. Texture cleanliness testing shows a residue removal rate ≥98%, and after wiping with 75% alcohol 10 times, the texture depth retention rate is >95%.

[0092] This structure reduces the thermal response time of the sensor contact surface to within 8 seconds and increases the temperature conduction efficiency to over 92%. The 6.5mm outer diameter sealing ring generates 0.25mm of compression under a 10N clamping force, with an interface thermal resistance ≤0.05℃·cm² / W. 0.2mm deep anti-slip grooves increase the contact surface friction coefficient to 0.6~0.8, and the displacement is controlled within ±0.1mm / 24h. Plasma treatment reduces the adhesion of the silicone surface by 85%, with residue <0.01μg / cm². After 200 disassembly and assembly cycles, the permanent compression deformation rate of the sealing ring is <5%, and there is no cracking of the adhesive layer. After 72 hours of continuous operation in a 95% humidity environment, the insulation resistance remains ≥1×10⁻⁶. 13 Ω.

[0093] Furthermore, in another technical solution, an over-temperature protection circuit module is provided between the PID controller 25 and the semiconductor cooling chip group 22, which triggers a power cut-off mechanism when the detected temperature is lower than 3°C.

[0094] In the above technical solution, the over-temperature protection circuit module between the PID controller and the semiconductor cooling chip group 22 can trigger a power cut-off mechanism when the detected temperature is below 3°C, to prevent the patient's skin from being damaged by excessively low temperature and improve the safety of use.

[0095] Specifically, the over-temperature protection circuit can use an Omron G3VM-61VY3 solid-state relay module, with a maximum switching current of 3A and a response time of ≤10ms. This module is connected in parallel with the signal output of the PID controller 25, and is installed inside the insulation layer 21 at a distance of 2250mm from the semiconductor cooling chip assembly. The circuit board can be made of FR-4 double-sided copper-clad laminate, 1.6mm thick, with a copper foil thickness of 35μm. The circuit design adopts a 4-layer PCB layout, with the middle two layers being the power layer and ground layer, with a line width of 0.3mm and a spacing of 0.2mm. The withstand voltage test is performed according to the IEC61010 standard, maintaining 2500VAC for 1 minute without breakdown.

[0096] The temperature threshold is adjustable to three settings: 2.8℃, 3.0℃, or 3.2℃, and fine-tuned using a digital potentiometer. The temperature sampling circuit can use an Analog Devices AD8495 thermocouple amplifier with a sampling frequency of 10Hz and a resolution of 0.1℃. Threshold calibration is performed in a constant-temperature oil bath using a Fluke 724 temperature calibrator as the reference, with calibration points spaced 0.5℃ apart. A hysteresis prevention mechanism is implemented, meaning power is only allowed to be restored after the temperature rises above 4℃. Temperature drift testing is conducted in an environmental chamber ranging from -20℃ to 60℃, with a measured threshold offset ≤ ±0.15℃.

[0097] The power disconnection actuator can be an Infineon BTS4140N intelligent high-side switch, with an on-resistance ≤50mΩ and a built-in overcurrent protection threshold of 7A. The disconnection signal is transmitted via optocoupler isolation; a Toshiba TLP521-4 four-channel optocoupler with a transmission delay ≤3μs can be used. The relay contacts are connected in series with the main power line, with a wire cross-sectional area ≥0.75mm², and the crimp terminal is a JST SVH-21T-1.1 type. The reset mechanism uses a manual reset button design with a 2mm travel and an operating force of 3N±0.5N. Electrical life testing shows it can withstand more than 5000 switching operations under rated load.

[0098] This protection mechanism can cut off the power within 0.2 seconds when a low temperature of 3℃ is detected, with a response time deviation of ≤±50ms. The solid-state relay module controls voltage spikes during switching to within ±5V. The AD8495 amplifier achieves a temperature detection accuracy of ±0.3℃, and, in conjunction with a digital potentiometer, enables threshold fine-tuning in 0.1℃ steps. The BTS4140N switch has a leakage current of <1μA in the off state, and standby power consumption is reduced to below 0.05W. Tested according to GB / T 14598.27 standard, the protection system's false trip rate is <0.01 times / thousand-hour. In sudden load testing, the overcurrent protection response time is ≤20μs, effectively preventing secondary faults.

[0099] Furthermore, in another technical solution, the waterproof isolation membrane 13 is made of polyethylene film, and the waterproof isolation membrane 13 is formed by hot pressing a 0.1 mm thick polyethylene film to the edge of the flow guiding layer 12 to form a continuous heat-sealed edge with a width of 3-5 mm.

[0100] In the above technical solution, the waterproof isolation membrane 13 is made of polyethylene film and is continuously heat-sealed to the edge of the silicone layer 11 by hot pressing. This ensures that the waterproof isolation membrane 13 and the silicone layer 11 are tightly connected, preventing leakage of traditional Chinese medicine decoction and ensuring the effectiveness and hygiene of use.

[0101] Specifically, the waterproof isolation membrane 13 can be made of Dow Chemical LLDPE 2056G polyethylene film, with thicknesses of 0.08mm, 0.1mm, or 0.12mm. The film's moisture permeability is tested according to GB / T 1037 standard, with a measured value ≤5g / m²·24h. Tensile strength is ≥25MPa longitudinally, ≥20MPa transversely, and ≥120N / mm at right angles. The lamination process between the film and the silicone layer 11 employs a three-layer lamination structure, with a 0.02mm thick polyurethane adhesive in the middle layer. A laminating machine is used, with the lamination temperature set at 80℃ and the linear speed at 8m / min.

[0102] The hot-pressing process parameters can be selected from three temperature settings: 140℃, 150℃, or 160℃; pressure range: 0.4~0.6MPa; holding time: 2~4 seconds. A heat-sealing machine can be used. The working surface of the heat-sealing head is hard chrome plated with a thickness of 0.05mm and a surface roughness Ra of 0.4μm. The quality inspection of the heat-sealed edge uses a dye penetration method, maintaining a pressure of 0.03MPa for 30 seconds without leakage. The heat-sealing strength test is performed according to ASTM F88 standard, with a peel strength ≥15N / 15mm.

[0103] The heat-sealing edge width can be set to three implementation schemes: 3.2mm, 4.0mm, or 4.8mm. The edge sealing cross-section has an arc-shaped structure with a radius of curvature R0.5mm. A 0.2mm thick reinforcing rib is added to the edge sealing edge, with a rib height of 0.3mm and a spacing of 1mm. The heat-sealing layer structure is a sandwich design, with a bonding thickness ratio of 2:1:3 for the outer polyethylene film, the middle adhesive layer, and the inner silicone layer. Fatigue resistance testing shows that the heat-sealed edge shows no cracking after 500 bends, and the burst pressure is ≥35kPa. Light transmission testing of the edge sealing shows a bubble defect density ≤0.2 cells / cm², which is monitored online using a defect detector.

[0104] This structure achieves a heat-sealed edge strength exceeding 18 N / 15 mm, while the 0.1 mm film thickness controls moisture permeability to 3.2 g / m²·24 h. A 4.0 mm heat-sealed edge width generates only 0.15 mm of compression deformation under 0.5 MPa pressure, improving interface sealing reliability by 40%. The arc-shaped cross-section design reduces edge stress concentration to below 1.1 and increases tear resistance to 130 N / mm. Tested according to GB / T 4857 standards, the packaging seal integrity rate is ≥99.8%, maintaining leak-free operation under alternating temperature environments from -20℃ to 50℃. The heat-sealing process achieves a production efficiency of 8 m / min with a defect rate of <0.5%.

[0105] Application Example 1:

[0106] 1. Core materials:

[0107] Traditional Chinese medicine decoction: "Erhuang Decoction", 30g each of Coptis chinensis, Phellodendron chinense and Polygonum cuspidatum, decocted into 100mL, and stored in the refrigerator at 8°C~15°C.

[0108] Cold compress carriers: gauze (for absorbing the medicine), plastic wrap (to fix the gauze).

[0109] 2. Auxiliary tools:

[0110] Measuring tool: water thermometer (ensure the temperature of the medicine solution is between 13°C and 15°C).

[0111] Containers: glass measuring cup (for holding the medicine), treatment tray (for placing gauze).

[0112] Syringe: Used to evenly inject the medicine onto the gauze (in a "Z" pattern).

[0113] Fixing material: plastic wrap (wrap the gauze, extending 2-3cm beyond the edge of the gauze).

[0114] Other: treatment towels (to protect the bed unit), tweezers, cleaning supplies.

[0115] Summary of operation steps:

[0116] 1. Preliminary preparations:

[0117] Preparation of the decoction: Decoction of Chinese medicine to 100mL, refrigerate at 8°C~15°C for later use.

[0118] Materials needed: treatment tray, gauze, plastic wrap, syringe, thermometer, treatment towel, etc.

[0119] Patient assessment: Verify doctor's orders, check allergy history, skin integrity (no ulceration or blisters), and blood vessel condition at the cold compress site.

[0120] 2. Operating Procedures:

[0121] Step 1: Cleanse your skin

[0122] Clean the affected area with warm water to remove secretions or dirt, ensuring effective absorption of the medication.

[0123] Step 2: Test the temperature of the medicine

[0124] Use a water thermometer to measure the temperature of the medicine solution and control it between 13°C and 15°C.

[0125] Step 3: Apply medication and fix in place

[0126] Lay the gauze flat on the treatment tray and use a syringe to evenly inject the medication in a "Z" motion until it is soaked.

[0127] Apply to the affected area (for phlebitis, apply along the direction of the blood vessel, covering about 7cm above the puncture point).

[0128] Cover with plastic wrap, securing the edges 2-3cm beyond the gauze to prevent loosening.

[0129] Step 4: Observation and Recording

[0130] Treatment lasts 4 to 6 hours. During this time, patients are asked about their feelings regularly and their skin is observed for paleness, cyanosis, or allergic reactions.

[0131] After the procedure, remove the gauze, clean the skin, and record the skin condition and patient feedback.

[0132] 3. Follow-up processing:

[0133] The remaining liquid medicine must be refrigerated on the same day (08:00-17:00), and will be disposed of by designated personnel after that time.

[0134] Clean and disinfect used tools (such as containers and treatment trays).

[0135] Key points

[0136] Temperature control: The solution must be strictly controlled within a low temperature range (13°C~15°C) to avoid frostbite or loss of efficacy.

[0137] Fixing method: The plastic wrap should be tightly wrapped to prevent the medicine from evaporating or shifting.

[0138] Contraindications: Not for use by patients with cold syndrome, circulatory disorders, or cold allergy.

[0139] Indications: Suitable for phlebitis (grades 1-3), radiation dermatitis (grades I-II), and swelling and pain in the early postoperative period after fractures.

[0140] Through the aforementioned device and operating procedures, the traditional Chinese medicine cold compress technique can effectively combine drug penetration with the low-temperature effect to relieve inflammation, swelling, and pain.

[0141] Application Example 2:

[0142] Using the cold compress device of this application for the same cold compress, temperature control (13°C~15°C) is convenient, the medication penetrates more evenly, and there is no leakage. It has significant advantages in terms of medication flow, temperature control, wearing experience, structural design, safety protection, and cost-effectiveness, which can effectively improve the effect of cold compress therapy and bring a better experience to patients.

[0143] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A cold compress device based on traditional Chinese medicine decoction, characterized in that, include: A flexible cooling pad includes a silicone layer in contact with the skin, a flow-guiding layer applied to the silicone layer, and a waterproof isolation membrane covering the flow-guiding layer and circumferentially sealed to the silicone layer. The flow-guiding layer has serpentine faceted flow-guiding grooves, and multiple guide holes are formed at the bottom of the flow-guiding grooves. The silicone layer has micropores for releasing medication. The waterproof isolation membrane has an injection port, and a puncture diaphragm is embedded in the injection port. The lower part of the puncture diaphragm is connected to the flow-guiding groove. A flexible thermal insulation structure is detachably installed on the outside of the waterproof isolation membrane. The flexible thermal insulation structure includes an outer thermal insulation layer, a middle semiconductor cooling chip assembly, an inner aluminum foil thermal conductive film, and a waterproof cloth wrapped around the outer surface of the thermal insulation layer and the aluminum foil thermal conductive film. A PID controller, a temperature display screen, and operation buttons are integrated on the thermal insulation layer. The PID controller is connected to the semiconductor cooling chip assembly through a bendable circuit embedded in the thermal insulation layer. At least one temperature sensor, the sensing end of which is sealed through the aluminum foil thermal conductive film and the waterproof cloth and contacts the surface of the waterproof isolation film, the temperature sensor being connected to the PID controller via a bendable circuit.

2. The cold compress device based on traditional Chinese medicine decoction as described in claim 1, characterized in that, Elastic straps are provided on both sides of the insulation layer, and the ends of the elastic straps are provided with matching nylon Velcro. A breathable mesh with a width of 20-35mm is embedded in the middle of the elastic straps.

3. The cold compress device based on traditional Chinese medicine decoction as described in claim 1, characterized in that, The thickness of the silicone layer is 1~2mm, and the micropores of the silicone layer are arranged in an interlaced hexagonal honeycomb structure. The diameter of a single micropore is 0.5~1mm, and the center-to-center distance between adjacent micropores is 0.3~0.5mm.

4. The cold compress device based on traditional Chinese medicine decoction as described in claim 3, characterized in that, The material of the flow guiding layer is medical non-woven fabric, the spacing of the flow guiding grooves is 3~5mm, the diameter of the guide hole is 0.5~1mm, and the distribution rate of the guide hole is greater than the distribution rate of the micropore.

5. The cold compress device based on traditional Chinese medicine decoction as described in claim 1, characterized in that, The cold end face of the semiconductor cooling chip assembly is bonded to the aluminum foil thermal conductive film through a thermally conductive silicone grease layer, and the hot end face of the semiconductor cooling chip assembly is connected to an aluminum heat sink fin assembly.

6. The cold compress device based on traditional Chinese medicine decoction as described in claim 5, characterized in that, A heat dissipation duct is provided at the bottom of the insulation layer, which is connected to the aluminum heat dissipation fin assembly. A miniature fan is installed inside the heat dissipation duct, and a stainless steel dustproof mesh with a perforated diameter is provided at the air inlet of the miniature fan.

7. The cold compress device based on traditional Chinese medicine decoction as described in claim 1, characterized in that, An adhesive tape with a width of 3-6 mm is provided between the edge of the waterproof isolation membrane and the edge of the silicone layer.

8. The cold compress device based on traditional Chinese medicine decoction as described in claim 1, characterized in that, The detection end of the temperature sensor is surrounded by an annular thermally conductive silicone sealing ring. The annular thermally conductive silicone sealing ring has an outer diameter of 5~8mm and an inner diameter of 3~4mm. The contact surface between the annular thermally conductive silicone sealing ring and the waterproof isolation membrane is provided with an anti-slip grid pattern with a depth of 0.1~0.3mm.

9. The cold compress device based on traditional Chinese medicine decoction as described in claim 1, characterized in that, An over-temperature protection circuit module is provided between the PID controller and the semiconductor cooling chip group, which triggers a power cut-off mechanism when the detected temperature is below 3°C.

10. The cold compress device based on traditional Chinese medicine decoction as described in claim 1, characterized in that, The waterproof isolation membrane is made of polyethylene film.

Images