Portable intelligent temperature-control low-body-temperature first-aid rewarming cap

Abstract

The utility model provides a portable intelligent temperature-control low-body-temperature emergency rewarming cap which is suitable for emergency rewarming treatment of low-body-temperature wounded persons in an outdoor extremely low-temperature environment. The rewarming cap comprises a cap body, a carotid artery rewarming device and an intelligent control system, the carotid artery rewarming device is internally provided with a graphene heating piece and a heat conduction silica gel pad, and the carotid artery is accurately heated to achieve the in-vivo rewarming effect; the intelligent control system integrates a temperature sensor and a heart rate sensor, monitors the heating temperature and the heart rate in real time, and dynamically adjusts the heating power and feeds back the vital signs of the wounded through a microprocessor; a heating patch storage box is arranged on the lower portion of the intelligent control system, a folding front chest heating patch capable of being unfolded on the chest is arranged in the heating patch storage box, the core body temperature is increased by rewarming the front chest cardiopulmonary area through the body surface, and the problems that an existing low-body-temperature rewarming device is low in efficiency of the body surface rewarming mode and inconvenient to carry are solved.

Description

Technical Field

[0001] This utility model relates to the field of medical emergency equipment technology, specifically a portable intelligent temperature-controlled hypothermia emergency rewarming cap. Background Technology

[0002] When working in extreme low-temperature environments such as military operations, polar expeditions, and mountain climbing, personnel are highly susceptible to the threat of hypothermia, which becomes a major life-threatening risk. Hypothermia can severely affect human physiological functions, such as slowing down metabolism, causing abnormal nervous system function, increasing the burden on the cardiovascular system, and even triggering cardiac arrest, posing a direct threat to life safety.

[0003] In the field of outdoor hypothermia treatment, reducing heat loss and rewarming are the two core principles. Among these, heat loss prevention is particularly important, especially the protection of the head and face. In low-temperature environments, most of the human body is effectively protected by clothing, but the head and face are often exposed. Related studies have shown that in low-temperature environments, the human body can lose up to 30% of its total heat loss through the head and face. Therefore, effectively protecting the head and face outdoors in low temperatures can significantly reduce heat loss and create favorable conditions for subsequent rewarming treatment.

[0004] Rewarming, a crucial step in the treatment of hypothermia, is mainly divided into passive and active rewarming. Passive rewarming relies on the patient's own heat production, achieved through measures such as covering them with blankets, and is only suitable for patients with mild hypothermia. For patients with severe hypothermia, active rewarming is more necessary. Active rewarming is further subdivided into surface rewarming and internal rewarming. In outdoor environments, internal rewarming methods such as respiratory rewarming, hemodialysis, and peritoneal dialysis are difficult to implement due to their extremely high requirements for equipment and operation, as well as the need for specific locations and professional personnel. Surface rewarming has become the main rewarming method outdoors, using heat sources such as hot water baths, electric blankets, and radiant heat to raise the body surface temperature. However, simple surface rewarming has the problems of low efficiency and weak effect, and it is also prone to the "post-cooling effect," causing the patient's deep body temperature to continue to drop, posing a significant risk.

[0005] The carotid artery in the neck is crucial for blood circulation, being the artery with the largest blood flow among the body's surface arteries, accounting for 10% to 15% of the heart's blood volume. Heating the carotid artery allows for rapid heat transfer throughout the body via blood circulation, effectively raising core body temperature. Although carotid artery heating acts on the body surface, it achieves a rewarming effect within the body, exhibiting highly efficient rewarming characteristics. Furthermore, the chest region also plays a vital role in rapidly raising core body temperature, especially in areas containing important organs such as the heart and lungs. The heart and lungs have high heat conduction efficiency; heating the chest surface can quickly raise their temperature, which is then transferred to the entire body via blood circulation, resulting in rapid warming.

[0006] However, current hypothermia treatment equipment on the market has many shortcomings. Regarding heat loss reduction, most products do not adequately consider heat dissipation protection for the head and face. In terms of rewarming capabilities, firstly, these devices are mostly designed to meet the need for heating the torso or whole body, resulting in large size or heavy weight. In urgent emergency scenarios where time is of the essence, such as sudden low temperatures encountered during outdoor adventures or soldiers experiencing hypothermia in military field operations, they are difficult to transport quickly to the scene and deploy rapidly, significantly impacting the timeliness of treatment. Secondly, existing outdoor hypothermia treatment equipment uses surface rewarming, which is not as fast and efficient as internal rewarming. This results in relatively poor rewarming effects and low efficiency, making it impossible to meet the stringent time requirements within the golden treatment window when urgently treating severely hypothermic patients.

[0007] For the reasons mentioned above, there is an urgent need to develop a hypothermia emergency rewarming device that precisely heats key parts of the human body and rapidly raises the core body temperature through blood circulation. Summary of the Invention

[0008] To address the shortcomings of existing technologies, this utility model provides a portable intelligent temperature-controlled hypothermia emergency rewarming cap, which solves the problems of low efficiency and inconvenience of carrying existing hypothermia rewarming devices.

[0009] To achieve the above objectives, the present invention adopts the following technical solution:

[0010] A portable intelligent temperature-controlled hypothermia emergency rewarming cap includes a cap body, a carotid artery rewarming device, and an intelligent control system;

[0011] The hat is a flexible hat that covers the head, neck, and chin while exposing the face, and is flexibly connected to the intelligent control system at the bottom.

[0012] The intelligent control system is equipped with a display screen, an internal control circuit, a carotid artery rewarming device hinged on both sides, and a heating patch storage box at the bottom. The heating patch storage box contains a foldable chest heating patch that can be unfolded onto the chest.

[0013] The carotid artery rewarming device includes an arc-shaped box-shaped outer shell and an elastic heating liner. The arc-shaped box-shaped outer shell is equipped with a power source, and an adjustable elastic band connects the two carotid artery rewarming devices on both sides.

[0014] The elastic heating liner is equipped with a temperature sensor and a heart rate sensor. Both the elastic heating liner and the folded front chest heating patch are equipped with electric heating elements. The electric heating elements, temperature sensor and heart rate sensor are all connected to the control circuit wires and form a control loop.

[0015] Preferably, the cap body has a three-layer composite structure, namely an outer waterproof layer, a middle heat insulation layer and an inner layer, and the inner layer is provided with adjustable heat dissipation holes that are connected to the outside of the cap body.

[0016] Preferably, the elastic heating liner includes an elastic liner, on which a thermally conductive silicone pad conforms to the carotid artery is provided, and a graphene heating element is provided inside the thermally conductive silicone pad.

[0017] Preferably, the foldable chest heating patch has a three-layer composite structure, with an outer heat insulation film, a middle foldable carbon fiber heating wire, and an inner silicone thermal conductive layer.

[0018] Preferably, the control circuit of the intelligent control system includes a microprocessor, a digital-to-analog converter module, and a power drive module. Electric heating elements, temperature sensors, and heart rate sensors are connected to each other via wires, forming a complete control loop. The outputs of the temperature sensor and heart rate sensor are connected to the analog input of the digital-to-analog converter module, the digital output of the digital-to-analog converter module is connected to the input of the microprocessor, and the output of the microprocessor is connected to the power drive module. The electric heating elements within the elastic heating liner and the folded chest heating patch are connected to a power source through the power drive module.

[0019] Preferably, the intelligent control system further includes a buzzer alarm module, which is connected to the output of the microprocessor.

[0020] Preferably, the intelligent control system further includes a wireless communication module that can connect to external devices, and the wireless communication module is communicatively connected to the microprocessor.

[0021] Preferably, the power source is a lithium battery, and the lithium battery is connected to a rechargeable external power interface, which is located on an arc-shaped box-like outer shell on one side. Beneficial effects

[0022] 1. High rewarming efficiency: This invention achieves synergistic effects of internal and external rewarming: By precisely heating the carotid artery, heat is rapidly transported throughout the body via blood circulation, achieving highly efficient internal rewarming; simultaneously, the folded chest heating patch heats core organs such as the heart and lungs, rapidly raising core body temperature and further promoting heat transfer throughout the body via blood circulation, achieving rapid external rewarming; the synergistic effect of active external and internal rewarming, combined with head and face protection to reduce heat loss, achieves highly efficient rewarming.

[0023] Meanwhile, this invention achieves multi-point heating and optimized heat conduction. The carotid artery rewarming device uses a graphene heating pad, and the foldable chest heating patch uses a foldable carbon fiber heating wire, which has high-efficiency heat conduction performance to ensure that heat is quickly transferred to the target area. The thermally conductive silicone pad fits tightly to the skin, further optimizing heat conduction efficiency, reducing heat loss, and further improving rewarming efficiency.

[0024] 2. This utility model can realize real-time heart rate monitoring: The heart rate sensor is integrated into the elastic heating liner of the carotid artery rewarming device to monitor the patient's heart rate in real time and transmit the data to the intelligent control system; the core body temperature and heart rate data are transmitted to the display device (such as mobile phone, watch, etc.) through the display screen or wireless module, so as to realize real-time dynamic monitoring of the patient's vital signs and facilitate medical staff to keep track of the patient's physical condition at any time.

[0025] 3. This utility model features enhanced portability through optimized structural design. The cap body adopts a three-layer composite structure (outer waterproof layer, middle heat insulation layer, and inner layer), making it lightweight and highly functional. The flexible cap body is foldable for easy storage and carrying. Both the carotid artery rewarming device and the foldable chest heating patch feature lightweight design, resulting in a lightweight and compact overall device, particularly suitable for outdoor emergency rescue scenarios. The foldable chest heating patch uses foldable carbon fiber heating wire as the electric heating element, which can be folded and stored in a storage box, and can be quickly unfolded for rapid deployment. The overall compact design of the device facilitates rapid transportation and use in scenarios such as military operations, polar expeditions, and high-altitude climbing.

[0026] 4. This utility model dynamically adjusts the heating power through an intelligent control system, which can realize intelligent control. The intelligent control system receives temperature and heart rate data fed back by the sensor in real time through a microprocessor, and dynamically adjusts the heating power according to the preset temperature range to ensure that the rewarming process is safe and effective; when the heart rate is abnormal, the microprocessor controls the buzzer to sound an alarm. Attached Figure Description

[0027] Figure 1 This is a front view of the overall structure of this utility model;

[0028] Figure 2 This is a side view of the overall structure of this utility model;

[0029] Figure 3 This is a schematic diagram of the layered structure of the cap.

[0030] Figure 4 This is a schematic diagram of a carotid artery rewarming device on one side, where a is a side view, b is a schematic diagram of the elastic heating liner structure, and c is a top view.

[0031] Figure 5 This is a schematic diagram showing the connections of each module in the intelligent control system circuit.

[0032] Figure 6 This is a diagram showing the unfolded folded chest heating patch inside the heating patch storage box.

[0033] The components include: 1. Cap body; 101. Outer waterproof layer; 102. Middle heat insulation layer; 103. Inner layer; 104. Adjustable heat dissipation holes; 105. Adjustable elastic band; 2. Carotid artery rewarming device; 201. Arc-shaped box-shaped outer shell; 202. Elastic heating liner; 203. Elastic liner; 204. Thermally conductive silicone pad; 205. Graphene heating element; 206. Power supply; 3. Intelligent control system; 301. Microprocessor; 302. Temperature sensor; 303. Heart rate sensor; 304. Display screen; 305. Power drive module; 306. Buzzer alarm module; 307. Wireless communication module; 308. Digital-to-analog conversion module; 4. Heating patch storage box; 401. Foldable chest heating patch; 402. Foldable carbon fiber heating wire. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] like Figure 1 , 2 As shown, this utility model provides a portable intelligent temperature-controlled hypothermia emergency rewarming cap, including a cap body 1, a carotid artery rewarming device 2, and an intelligent control system 3;

[0036] The hat body 1 is a flexible hat that covers the head, neck, and chin while exposing the face. The bottom of the hat body 1 is flexibly connected to the intelligent control system 3.

[0037] The intelligent control system 3 is equipped with a display screen 304, which is a high-definition LED display screen used to monitor the patient's vital signs such as body temperature and heart rate. A control button panel is located on one side of the display screen 304 for setting heating parameters. Alternatively, a touch screen can be selected, eliminating the need for the control button panel. The intelligent control system 3 contains a control circuit, and carotid artery rewarming devices 2 are hinged to both sides. A heating patch storage box 4 is located at the bottom. (Reference) Figure 6 As shown, the heating patch storage box 4 has a foldable front chest heating patch 401 that can be unfolded on the chest.

[0038] The heating patch storage box 4 is made of lightweight rigid material. The foldable chest heating patch 401 has a three-layer composite structure. The inner silicone thermal conductive layer is made of high thermal conductivity silicone material. The middle layer uses foldable carbon fiber heating wire 402 as an electric heating element. The foldable carbon fiber heating wire 402 is made of flexible carbon fiber material. The outer heat insulation film is made of high efficiency heat insulation material.

[0039] like Figure 4 As shown, the carotid artery rewarming device 2 includes an arc-shaped box-shaped outer shell 201 and an elastic heating inner liner 202. A power supply 206 is provided inside the arc-shaped box-shaped outer shell 201. An adjustable elastic band 105 is connected between the two carotid artery rewarming devices 2. In this embodiment, the adjustable elastic band 105 is in the form of an elastic band with Velcro or an adjustable buckle.

[0040] The arc-shaped box-like outer shell 201 is made of lightweight rigid heat-insulating material and designed to conform to the curved shape of the neck. The elastic heating liner 202 includes an elastic liner 203, on which a thermally conductive silicone pad 204 conforms to the carotid artery. A graphene heating element 205 is disposed within the thermally conductive silicone pad 204. In this embodiment, the outer edge of the elastic liner 203 is flexibly and sealed to the inner layer of the neck of the cap 1, allowing the thermally conductive silicone pad 204 to extend into the cap 1 and directly contact the carotid artery.

[0041] Among them, the elastic liner 203 is made of soft elastic material, the graphene heating plate 205 is made of flexible graphene material, and the thermally conductive silicone pad 204 is made of highly thermally conductive silicone material.

[0042] The elastic heating liner 202 is equipped with a temperature sensor 302 and a heart rate sensor 303. The heart rate sensor 303 is located on the inner side of the elastic heating liner 202, directly contacting the carotid artery to ensure accurate measurement. The elastic heating liner 202 contains a graphene heating element 205, and the foldable chest heating patch 401 contains a foldable carbon fiber heating wire 402; both are electric heating elements. A power supply 206 provides power to the electric heating elements, and the control circuit of the intelligent control system 3 adjusts the heating power of the electric heating elements based on the patient's vital signs detected by the temperature sensor 302 and the heart rate sensor 303.

[0043] In this embodiment, as Figure 5As shown, the control circuit of the intelligent control system 3 includes a microprocessor 301, a digital-to-analog converter module 308, and a power drive module 305. The outputs of the temperature sensor 302 and the heart rate sensor 303 are connected to the analog input of the digital-to-analog converter module 308. The digital output of the digital-to-analog converter module 308 is connected to the input of the microprocessor 301. The output of the microprocessor 301 is connected to the power drive module 305. The electric heating elements in the elastic heating liner 202 and the folded chest heating patch 401 are connected to the power supply 206 through the power drive module 305.

[0044] The power supply 206 uses a lithium battery with high energy density and good charge and discharge performance. The battery capacity must be sufficient to operate continuously for at least 3 hours in low-temperature environments. At the same time, it is equipped with corresponding overcharge protection, over-discharge protection and short-circuit protection measures to prevent battery damage or safety accidents. The arc-shaped box-shaped shell 201 is equipped with an external power interface, such as a USB or DC interface. Its functions are to charge the lithium battery and to connect to an external emergency power source, such as a solar charging panel or a hand-cranked generator, to ensure that the temperature cap can continue to work when there is no regular power supply.

[0045] The microprocessor 301 uses the 8051 microcontroller, and the temperature sensor 302 uses the 503ET series thermistor body temperature probe. It is connected to the 8051 microcontroller through the XPT2046 digital-to-analog converter chip. The 8051 microcontroller controls the heating power and heating time of the graphene heating element 205 and the foldable carbon fiber heating wire 402 through the PWM power drive module.

[0046] Furthermore, such as Figure 3 As shown, the cap body 1 has a three-layer composite structure, consisting of an outer waterproof layer 101, a middle heat-insulating layer 102, and an inner layer 103. The outer waterproof layer 101 uses a high-strength waterproof and breathable fabric, such as GORE-TEX fabric or specially treated nylon fabric, to resist wind, rain, and snow, ensuring breathability. The middle heat-insulating layer 102 uses aerogel felt or high-quality EPE pearl cotton, etc., low-density, high-heat-insulating materials to reduce heat loss. The inner layer 103 uses skin-friendly cotton material to reduce friction and irritation, improving wearing comfort. Adjustable heat dissipation holes 104 are provided on the inner layer 103, communicating with the outside. In this embodiment, conventional manually adjustable heat dissipation holes are used, which are manually adjusted according to body temperature to maintain a suitable head temperature environment, effectively avoiding secondary harm to the patient from excessively high or low temperatures. The adjustable heat dissipation holes 104 can also be selected as automatically adjustable heat dissipation holes and connected to the intelligent control system 3, automatically adjusting according to the body temperature detected by the temperature sensor 302.

[0047] Furthermore, the intelligent control system 3 also includes a buzzer alarm module 306, which is connected to the output of the microprocessor 301. When the patient's heart rate or heating temperature is abnormal, the microprocessor 301 controls the buzzer alarm.

[0048] Furthermore, the intelligent control system 3 also includes a wireless communication module 307 that can connect to external devices. The wireless communication module 307 is communicatively connected to the microprocessor 301, and the monitoring data is transmitted to external devices in real time, such as mobile phones, tablets, or medical monitoring systems. In this embodiment, the wireless communication module 307 is a Bluetooth module.

[0049] Finally, as an extension of this invention, zero-heat-flux thermometry is employed. By measuring the heat flux and temperature changes on the skin surface and combining this with a specific algorithm, core body temperature is calculated. This enables non-invasive, continuous, accurate, and real-time monitoring of core body temperature.

[0050] The usage process of this embodiment is as follows:

[0051] (a) Equipment assembly and wearing

[0052] Place the rewarming cap on the wounded person's head, ensuring that the cap fits snugly against the head, covering the chin at the front and the neck at the back.

[0053] Adjust the adjustable elastic connecting strap 105 to ensure that the elastic heating liner 202 fits tightly against the carotid artery on both sides of the injured person, and ensure that the heat-conducting silicone pad 204 is in close contact with the carotid artery.

[0054] Take out the folded chest heating patch 401 from the heating patch storage box 4, let it hang down naturally and cover the appropriate position on the injured person's chest, and ensure that the silicone heat-conducting layer is in close contact with the chest skin.

[0055] (II) Equipment Start-up and Warm-up Process

[0056] When the power is turned on, the intelligent control system 3 starts. Based on the initial temperature feedback from the temperature sensor 302, the microprocessor 301 adjusts the electric heating element via the power drive module 305 to begin heating: the graphene heating element 205 in the elastic heating liner 202 of the carotid artery rewarming device 2 begins operation, transferring heat to the carotid artery. With the help of blood circulation, the heat is rapidly delivered to the whole body, raising the core body temperature.

[0057] At the same time, the foldable carbon fiber heating wire 402 in the foldable chest heating patch 401 starts to work, conducting heat to the chest area and quickly transmitting it to core organs such as the heart and lungs, further raising the core body temperature.

[0058] (III) Real-time heart rate monitoring and intelligent temperature control

[0059] The heart rate sensor 303 is integrated into the elastic heated liner 202 to monitor the heart rate of the injured person in real time and transmit the data to the microprocessor 301. The microprocessor 301 then transmits the heart rate data to the display screen 304.

[0060] The microprocessor 301 dynamically adjusts the heating power based on the temperature data fed back by the temperature sensor 302. When the heating temperature is close to the preset temperature range (default 42℃), the microprocessor 301 automatically reduces the heating power to prevent burns; when the heating temperature is lower than the preset temperature range (default 38℃), the microprocessor 301 automatically increases the heating power to ensure a safe and effective rewarming process.

[0061] (iv) Equipment operation and adjustment

[0062] Depending on the actual situation, the heat loss inside the cap can be controlled by adjusting the adjustable heat dissipation holes 104 in the inner layer of the cap, ensuring the comfort of the injured person's head.

[0063] When the power supply 206 is low on power, an external power supply can be connected through the external interface to ensure continuous operation of the device.

[0064] When a patient's heart rate becomes abnormal, the microprocessor 301 controls a buzzer to sound an alarm, alerting medical staff to take timely action.

[0065] (v) Equipment storage

[0066] After using the reheating cap, fold the front chest heating patch 401 back into the heating patch storage box 4, and fold the cap body for easy carrying and storage.

[0067] Through the above embodiments, the portable intelligent temperature-controlled hypothermia emergency rewarming cap of this utility model can efficiently and safely rewarm hypothermic patients, while simultaneously monitoring the patient's vital signs in real time, providing strong support for outdoor emergency care. Obviously, those skilled in the art can make various modifications and variations to the embodiments of this utility model without departing from the spirit and scope of the embodiments of this utility model. Therefore, if these modifications and variations of the embodiments of this utility model fall within the scope of the claims of this utility model and their equivalents, then this utility model also intends to include these modifications and variations.

Claims

1. A portable, smart temperature-controlled, mild hypothermia first aid rewarming cap, characterized in that, It comprises a cap body (1), a carotid artery rewarming device (2), and an intelligent control system (3); The cap body (1) is a flexible cap that covers the head, neck, and lower jaw and exposes the face, and the cap body (1) is flexibly connected to the intelligent control system (3) below. The intelligent control system (3) is provided with a display screen (304) on the top, a control circuit inside, and carotid artery rewarming devices (2) hinged on both sides, and a heating patch storage box (4) at the bottom, and the heating patch storage box (4) is provided with a foldable front chest heating patch (401) that can be unfolded on the chest. The carotid artery rewarming device (2) comprises an arc-shaped box-shaped shell (201) and an elastic heating lining (202), and the arc-shaped box-shaped shell (201) is provided with a power supply (206) inside, and the carotid artery rewarming devices (2) on both sides are connected by an adjustable elastic belt (105). The elastic heating lining (202) is provided with a temperature sensor (302) and a heart rate sensor (303), and the elastic heating lining (202) and the foldable front chest heating patch (401) are both provided with an electric heating element, and the electric heating element, the temperature sensor (302), and the heart rate sensor (303) are all connected to the control circuit through wires to form a control loop.

2. The portable, smart temperature-controlled, hypothermia first aid rewarming cap of claim 1, wherein, The cap body (1) has a three-layer composite structure, which comprises an outer waterproof layer (101), an intermediate thermal insulation layer (102), and an inner layer (103), and the inner layer (103) is provided with adjustable heat dissipation holes (104) that are in communication with the outside of the cap body (1).

3. The portable, smart temperature-controlled, hypothermia first aid rewarming cap of claim 1, wherein, The elastic heating lining (202) comprises an elastic lining (203), and the elastic lining (203) is provided with a heat-conducting silica gel pad (204) that fits the carotid artery, and the heat-conducting silica gel pad (204) is provided with a graphene heating sheet (205) inside.

4. The portable, smart, temperature-controlled, mild hypothermia first-aid, rewarming cap of claim 1, wherein, The foldable front chest heating patch (401) has a three-layer composite structure, which comprises a heat insulation film as the outer layer, a foldable carbon fiber heating wire (402) as the middle layer, and a silica gel heat-conducting layer as the inner layer.

5. The portable, smart, temperature-controlled, mild hypothermia first-aid, rewarming cap of claim 1, wherein, The control circuit of the intelligent control system (3) comprises a microprocessor (301), a digital-to-analog conversion module (308), and a power drive module (305), the temperature sensor (302) and the heart rate sensor (303) are connected to the analog input of the digital-to-analog conversion module (308), the digital output of the digital-to-analog conversion module (308) is connected to the input of the microprocessor (301), the output of the microprocessor (301) is connected to the power drive module (305), and the electric heating elements in the elastic heating lining (202) and the foldable front chest heating patch (401) are connected to the power supply (206) through the power drive module (305).

6. The portable, smart temperature-controlled, hypothermia first aid rewarming cap of claim 5, wherein, The intelligent control system (3) further comprises a buzzer alarm module (306) connected to the output of the microprocessor (301).

7. The portable, smart temperature-controlled, hypothermia first aid rewarming cap of claim 5, wherein, The intelligent control system (3) further comprises a wireless communication module (307) that can be connected to external devices, and the wireless communication module (307) is in communication with the microprocessor (301).

8. The portable, smart, temperature-controlled, mild hypothermia first-aid, rewarming cap of claim 1, wherein, The power supply (206) is a lithium battery, and a chargeable external power supply interface is connected to the lithium battery and arranged on the arc-shaped box-shaped shell (201) on one side.

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