Portable emergency care stretcher

Abstract

The invention relates to the technical field of medical instruments, in particular to a portable emergency care stretcher which comprises a stretcher body, a heating sleeping bag is arranged at the upper end of the stretcher body and is formed by sequentially laying a graphene layer, a heating wire layer, a heat insulation layer and a waterproof layer from inside to outside, and a controller is fixedly mounted on the inner wall of a control box. A temperature sensing block is fixedly installed at the upper end of the inner wall of the heating sleeping bag, and a sphygmomanometer used for monitoring vital signs of a wounded person is worn on the wrist of the wounded person in the heating sleeping bag. The temperature in the sleeping bag is detected through the temperature sensor, when the temperature is lower than the preset temperature, the controller automatically adjusts the heating wire layer to maintain the body temperature of the wounded, blood pressure data can be monitored in real time through the wrist sphygmomanometer, and the functions of heat preservation transfer and vital sign monitoring are both considered.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically a portable emergency care stretcher. Background Technology

[0002] In extreme environments such as severe cold and natural disasters, injured people not only face the risk of their condition worsening due to low temperatures, but may also require real-time monitoring of vital signs such as blood pressure due to bleeding. However, traditional rescue stretchers lack active temperature control and vital sign monitoring functions. Existing flexible insulated stretchers and wrist blood pressure monitors have problems such as structural incompatibility, poor functional coordination, and insufficient portability when used independently, which cannot meet the needs of simultaneous temperature control and blood pressure monitoring during the transfer of injured people in extreme environments.

[0003] Existing emergency stretchers have problems with the inconvenience of disinfection and sterilization before use in the transport of wounded in extreme environments. This can lead to the spread of pathogens such as bacteria, viruses or fungi, which can become a medium for cross-infection. This is especially dangerous for wounded with low immunity. In addition, they cannot achieve constant temperature preservation and real-time blood pressure monitoring at the same time during transport. When used independently, the two have poor structural compatibility (such as inconvenient storage and fixation), insufficient functional coordination (mutual interference), and reduced portability (additional weight).

[0004] To address this, a portable emergency care stretcher was developed by integrating a flexible stretcher and a modified blood pressure monitor. This allows the stretcher to function independently yet collaboratively without compromising its original heating, insulation, and folding portability features. This approach meets the need to simultaneously maintain the patient's body temperature and monitor blood pressure in extreme environments, thereby improving the efficiency and safety of transport and treatment. Summary of the Invention

[0005] The purpose of this invention is to provide a portable emergency care stretcher to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a portable emergency care stretcher, comprising a stretcher body, with handles arrayed at both ends of the stretcher body, a heated sleeping bag disposed at the upper end of the stretcher body, a bag cap fixedly connected to the side end of the heated sleeping bag, the heated sleeping bag comprising a graphene layer, a heating wire layer, a heat insulation layer and a waterproof layer, and the waterproof layer fixedly connected to the stretcher body, a control box fixedly installed at the upper end of the stretcher body away from the heated sleeping bag, a controller fixedly installed on the inner wall of the control box, a control line fixedly connected to the output end of the controller, and the other end of the control line passing through the stretcher body and fixedly connected to the input end of the heating wire layer via the heated sleeping bag, a power cord fixedly connected to the power supply end of the controller, a power switch disposed on the side end of the power cord, a temperature sensing block fixedly installed at the upper end of the inner wall of the heated sleeping bag, a temperature sensor fixedly installed on the side end of the temperature sensing block, and a blood pressure monitor disposed at the wrist of the injured person in the heated sleeping bag.

[0007] Preferably, a cuff is fixedly installed at the lower end of the blood pressure monitor, and a temperature-sensing pad is fixedly installed at the lower end of the inner wall of the heated sleeping bag.

[0008] Preferably, the input terminal of the blood pressure monitor is fixedly connected to a data cable, the other end of the data cable is fixedly connected to a thermistor, the sensing end of the thermistor is fixedly connected to a temperature sensing pad, the input terminal of the thermistor is fixedly connected to a connecting wire, and the connecting wire passes through the temperature sensing block and connects to a control line.

[0009] Preferably, the stretcher body has a connecting part at the end away from the heated sleeping bag, and zipper heads are symmetrically installed at the ends of the connecting parts. Shoulder straps are symmetrically installed between the connecting parts, and handles are fixedly installed between the shoulder straps. The heated sleeping bag is divided into three areas along its length: a chest area, an abdominal area, and a lower limb area. An abdominal connector connects the chest area and the abdominal area, and a lower limb connector connects the abdominal area and the lower limb area.

[0010] Preferably, the input terminal of the controller is fixedly connected to a transmission line, the other end of the transmission line is fixedly connected to a wireless module, the power supply terminal of the wireless module is fixedly connected to a power line, and the other end of the power line is connected to a power bank.

[0011] Preferably, a fixed rod is fixedly installed at the upper end of the control box away from the power supply, a movable rod is slidably installed on the inner wall of the fixed rod, a telescopic spring is fixedly installed on the outer wall of the movable rod, a fixed ring is fixedly installed at the end of the movable rod away from the fixed rod, and a connecting rod is fixedly installed at the end of the fixed ring close to the power supply.

[0012] Preferably, a slide rail is provided at the end of the shoulder strap away from the stretcher body, a control switch is slidably provided on the inner wall of the slide rail, a switch wire is fixedly connected to the upper end of the control switch, a rubber tube is fixedly installed on the outer wall of the switch wire, and the switch wire passes through the stretcher body and connects to the side end of the movable rod near the fixed rod, and the rubber tube passes through the stretcher body and connects to the lower end of the fixed rod.

[0013] Preferably, an indicator light is fixedly installed at the upper end of the slide rail, and an indicator line is fixedly connected to the input end of the indicator light, and the indicator line passes through the stretcher body and is connected to a mobile power source.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. This invention places the wounded person inside a heated sleeping bag and uses a portable power source to supply heat to the heating wire layer of the sleeping bag. When heating is first activated, the controller automatically adjusts the heating wire layer to ensure that the heat generated by the heating wire layer reaches 46-50°C and distributes the heat to the inner wall of the heated sleeping bag, keeping the inner wall of the heated sleeping bag dry and effectively inactivating viruses and bacteria, avoiding cross-infection of the wounded person, and maintaining a constant temperature environment inside the heated sleeping bag. The temperature sensor detects the temperature inside the sleeping bag, and when the temperature is lower than the preset temperature, the controller automatically adjusts the heating wire layer to maintain the wounded person's body temperature. It can also monitor blood pressure data in real time through a wrist blood pressure monitor, thus combining the functions of heat preservation and transportation with vital sign monitoring.

[0016] 2. This invention divides the heated sleeping bag into three areas along its length. The abdominal connector and the lower limb connector allow for easier exposure of the corresponding areas without affecting the warmth and coverage of other areas, thus improving the efficiency of nursing operations. Pulling the zipper head allows the stretcher body to be stored as a carrying bag through the connecting part. The carrying bag can be carried on the back or in the hand via the shoulder strap, making it convenient for medical staff to carry with them.

[0017] 3. This invention, by pushing the control switch, causes the switch wire to move the movable rod and connecting rod, causing the connecting rod to strike the power switch, activating the mobile power supply to power all equipment. This allows rescuers to activate the heating function of the heated sleeping bag in advance while carrying the folded stretcher to the rescue site, ensuring that the stretcher is already in a sterilized state upon arrival. This effectively solves the problem of inconvenience in sterilizing stretchers in extreme environments and ensures that the injured are in a constant temperature environment from the very beginning, avoiding secondary injuries caused by temperature fluctuations. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the storage state structure of the present invention;

[0020] Figure 3This is a schematic diagram of the overall structure of the back side of the present invention;

[0021] Figure 4 This is a schematic diagram of the layered structure of the heated sleeping bag of the present invention;

[0022] Figure 5 This is a schematic diagram of the inner wall structure of the heated sleeping bag of the present invention;

[0023] Figure 6 This is a schematic diagram of the control box structure of the present invention;

[0024] Figure 7 This is a schematic diagram of the power supply structure of the present invention;

[0025] Figure 8 This is a schematic diagram of the blood pressure monitoring structure of the present invention;

[0026] Figure 9 This is a schematic diagram of the blood pressure monitor structure of the present invention;

[0027] Figure 10 This is a schematic diagram of the power switch structure of the present invention.

[0028] The attached diagram lists the components represented by each number as follows: 1. Carrying bag; 2. Connector; 3. Shoulder straps; 4. Stretcher body; 5. Handle; 6. Heated sleeping bag; 7. Controller; 8. Power bank; 9. Graphene layer; 10. Heating wire layer; 11. Insulation layer; 12. Waterproof layer; 13. Chest area; 14. Abdominal area; 15. Lower limb area; 16. Abdominal connector; 17. Lower limb connector; 18. Bag hood; 19. Handle; 20. Control box; 21. Zipper pull; 22. Blood pressure monitor; 23. None. 24. Wire module; 25. Transmission line; 26. Control line; 27. Power line; 28. Fixed rod; 29. ​​Indicator line; 30. Movable rod; 31. Switch line; 32. Rubber tube; 33. Telescopic spring; 34. Fixed ring; 35. Temperature sensing pad; 36. Thermistor; 37. Data line; 38. Connecting line; 39. Temperature sensing block; 40. Temperature sensor; 41. Cuff; 42. Velcro; 43. Indicator light; 44. Slide rail; 45. Control switch; 46. Linkage rod; 47. Power switch. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] This invention provides a technical solution: such as Figure 1 - Figure 10 As shown, a portable emergency care stretcher includes a stretcher body 4 made of a flexible material, as is common in the prior art. Handles 5 are arrayed at both ends of the stretcher body 4. A heated sleeping bag 6 for monitoring and maintaining the patient's body temperature is located at the upper end of the stretcher body 4. The heated sleeping bag 6 includes a graphene layer 9, a heating wire layer 10, a heat insulation layer 11, and a waterproof layer 12. The heated sleeping bag 6 is formed by sequentially laying the graphene layer 9, heating wire layer 10, heat insulation layer 11, and waterproof layer 12 from the inside out, and the waterproof layer 12 is fixedly connected to the stretcher body 4. The heating wire layer 10 is common in the prior art and will not be described in detail here. The heated sleeping bag 6 has a fixed side end... A control box 20 is fixedly installed on the upper part of the stretcher body 4 away from the heated sleeping bag 6, with a cap 18 connected to it. A controller 7 for adjusting the working state of the heating wire layer 10 is fixedly installed on the inner wall of the control box 20. A control line 25 is fixedly connected to the output end of the controller 7, and the other end of the control line 25 is fixedly connected to the input end of the heating wire layer 10. The control line 25 passes through the stretcher body 4 and the heated sleeping bag 6. A power cord 26 is fixedly connected to the power supply end of the controller 7, and a portable power supply 8 for powering the entire system is fixedly connected to the other end of the power cord 26. A power switch 47 is provided on the side of the portable power supply 8. The upper part of the inner wall of the heated sleeping bag 6... A temperature sensing block 39 is fixedly installed, and a temperature sensor 40 for real-time monitoring of the temperature inside the heated sleeping bag 6 is fixedly installed on the side of the temperature sensing block 39. A blood pressure monitor 22 for monitoring the vital signs of the injured person is installed at the wrist of the injured person in the heated sleeping bag 6. The controller 7, temperature sensor 40, power bank 8 and blood pressure monitor 22 are all existing technologies and will not be described in detail here. Specifically, when rescuing the injured person, the blood pressure monitor 22 is worn at the wrist of the injured person to monitor the blood pressure in real time. The temperature sensor 40 is preset to transmit data to the controller 7 when it detects that the temperature inside the heated sleeping bag 6 is lower than 5°C. The initial temperature range is set to 46-50℃, maintained for 15 minutes, and then reduced to 32-37℃. The controller 7 will automatically adjust the working state of the heating wire layer 10. When the heat generated by the heating wire layer 10 reaches 46-50℃, it is conducted and diffused through the graphene layer 9, evenly distributing the heat to the inner wall of the heated sleeping bag 6. This keeps the inner wall of the heated sleeping bag dry and effectively inactivates viruses and bacteria, preventing cross-infection of the wounded. After 15 minutes, the temperature will automatically decrease to 32-37℃ to maintain a constant temperature environment inside the heated sleeping bag 6. This prevents secondary injuries to the wounded due to temperature fluctuations in extreme environments and ensures the safety of the wounded during the transfer process.

[0031] like Figure 8 , Figure 9As shown, a cuff 41 is fixedly installed at the lower end of the blood pressure monitor 22. Velcro 42 is provided on both the inner and outer walls of the cuff 41. A temperature sensing pad 35 for detecting the temperature of the cuff 41 area is fixedly installed at the lower end of the inner wall of the heated sleeping bag 6. The upper end of the temperature sensing pad 35 has symmetrically connected holes. Specifically, the blood pressure monitor 22 is worn on the wrist of the injured person and the cuff 41 is connected by the Velcro 42. Then, the cuff 41 is passed through the holes of the temperature sensing pad 35 to make the blood pressure monitor 22 wear securely.

[0032] like Figure 8 , Figure 9 As shown, the input terminal of the blood pressure monitor 22 is fixedly connected to a data cable 37, and the other end of the data cable 37 is fixedly connected to a thermistor 36. Thermistor 36 is existing technology and will not be described in detail here. The resistance value of the thermistor 36 changes with temperature. It is preset to automatically cut off the circuit when the temperature is too low and automatically turn on the power when the temperature reaches the preset value. The sensing terminal of the thermistor 36 is fixedly connected to a temperature sensing pad 35. The temperature sensing pad 35 is provided with nitrogen gas to transmit temperature and pressure. The input terminal of the thermistor 36 is fixedly connected to a connecting wire 38, and the connecting wire 38 passes through the temperature sensing block 39. Connected to control line 25, specifically, the power bank 8 transmits power to connection line 38 via control line 25, and connection line 38 transmits power to thermistor 36. Thermistor 36 is preset to block the current to blood pressure monitor 22 when the temperature of the temperature sensing pad 35 is detected to be below 32°C, so that blood pressure monitor 22 stops working and prevents measurement data errors caused by vasoconstriction of the injured person in low temperature. When the temperature of the temperature sensing pad 35 reaches 32-37°C, thermistor 36 turns on the power to blood pressure monitor 22, so that blood pressure monitor 22 starts monitoring the injured person's blood pressure.

[0033] like Figure 1 - Figure 3As shown, the stretcher body 4 has a connecting part 2 for storing the stretcher at the end away from the heated sleeping bag 6. Zipper heads 21 are symmetrically installed at the ends of the connecting parts 2. Shoulder straps 3 are symmetrically installed between the connecting parts 2, and handles 19 are fixedly installed between the shoulder straps 3. The heated sleeping bag 6 is divided into three areas along its length: a chest area 13, an abdominal area 14, and a lower limb area 15. An abdominal connector 16 connects the chest area 13 and the abdominal area 14, and a lower limb connector 17 connects the abdominal area 14 and the lower limb area 15. Specifically, the chest area 13 can be detached from or connected to the abdominal area 14 by pulling the abdominal connector 16, and the abdominal area 14 can be detached from or connected to the lower limb area 15 by pulling the lower limb connector 17. The lower limb area 15 can be disassembled or connected. When the stretcher is not needed, the heated sleeping bag 6 and the stretcher body 4 can be folded together. Pulling the zipper heads 21 at both ends allows the stretcher body 4 to be stored as a carrying bag 1 through the connecting part 2. The carrying bag 1 can be carried on the back through the shoulder strap 3 and carried in the hand through the handle 19, making it convenient for medical staff to carry. When using the stretcher to lift the injured, pull the waterproof layer 12 at both ends to unfold the folded carrying bag 1 into a stretcher through the connecting part 2. When performing examinations, treatments and nursing procedures on the patient's chest, abdomen or lower limbs, the area-specific design makes it easier to expose the corresponding parts without affecting the warmth and coverage of other parts, thus improving the efficiency of nursing procedures.

[0034] like Figure 6 , Figure 7 As shown, the input end of the controller 7 is fixedly connected to a transmission line 24, and the transmission line 24 is connected to the temperature sensor 40 via Bluetooth. The other end of the transmission line 24 is fixedly connected to a wireless module 23. The wireless module 23 is existing technology and will not be described in detail here. The power supply end of the wireless module 23 is fixedly connected to a power line 27, and the other end of the power line 27 is connected to a power bank 8. Specifically, the power bank 8 transmits power to the wireless module 23 through the power line 27. When the temperature sensor 40 detects that the temperature inside the heated sleeping bag 6 is lower than 5°C, the temperature sensor 40 transmits the data to the wireless module 23. The wireless module 23 transmits the information to the controller 7 through the transmission line 24. The controller 7 transmits the command to the heating wire layer 10 through the control line 25. According to the temperature range preset by the controller 7, the working state of the heating wire layer 10 is automatically adjusted.

[0035] like Figure 6 , Figure 7As shown, a fixed rod 28 is fixedly installed on the upper end of the control box 20 away from the mobile power supply 8. A movable rod 30 is slidably installed on the inner wall of the fixed rod 28. A telescopic spring 33 is fixedly installed on the outer wall of the movable rod 30. A fixed ring 34 is fixedly installed on the end of the movable rod 30 away from the fixed rod 28. A connecting rod 46 is fixedly installed on the end of the fixed ring 34 close to the mobile power supply 8. Specifically, when the movable rod 30 is pushed to move towards the end close to the fixed rod 28, the movable rod 30 drives the fixed ring 34 and the connecting rod 46 to move, causing the connecting rod 46 to hit the power switch 47, starting the mobile power supply 8 to supply power to all devices. The fixed ring 34 compresses the telescopic spring 33, causing the telescopic spring 33 to shorten. When the pushing force disappears, the telescopic spring 33 releases its elasticity and extends, pushing the fixed ring 34 and the movable rod 30 to move towards the end away from the fixed rod 28.

[0036] like Figure 7 , Figure 10 As shown, a slide rail 44 is provided at the end of the shoulder strap 3 away from the stretcher body 4, and a guide rail is provided on the inner wall of the slide rail 44. A control switch 45 is slidably mounted on the inner wall of the slide rail 44. A switch wire 31 is fixedly connected to the upper end of the control switch 45, and a rubber tube 32 is fixedly installed on the outer wall of the switch wire 31. The switch wire 31 passes through the stretcher body 4 and connects to the side end of the movable rod 30 near the fixed rod 28. The rubber tube 32 passes through the stretcher body 4 and connects to the lower end of the fixed rod 28. Specifically, when the control switch 45 is pushed downward, the control switch 45 causes the switch wire 31 to extend. The switch wire 31 drives the movable rod 30 to move towards the end near the control box 20, causing the connecting rod to... 46 hits the power switch 47, activating the mobile power supply 8 to power all equipment. When the control switch 45 is released, the telescopic spring 33 releases its elasticity, pushing the movable rod 30 to move away from the fixed rod 28. The movable rod 30 shortens the switch wire 31 and drives the control switch 45 back to its original position. When the fixed ring 34 is pushed down again, the mobile power supply 8 can be turned off, cutting off power to all equipment. The rubber tube 32 allows the switch wire 31 to still be pulled when the stretcher is in the retracted state, allowing rescuers to turn on the heating function of the heated sleeping bag 6 in advance while carrying the retracted stretcher to the rescue, ensuring that the injured are in a constant temperature environment as soon as they arrive at the rescue site.

[0037] like Figure 7 , Figure 10 As shown, an indicator light 43 is fixedly installed on the upper end of the slide rail 44. An indicator line 29 is fixedly connected to the input end of the indicator light 43, and the indicator line 29 passes through the stretcher body 4 and connects to the output end of the mobile power supply 8. Specifically, when the mobile power supply 8 is turned on, the mobile power supply 8 transmits power to the indicator light 43 through the indicator line 29, so that the indicator light 43 is powered on and illuminates. This makes it more convenient for rescuers to check whether the power supply is on when carrying the stretcher in its stored state, and avoids wasting power.

[0038] It should be noted that the stretcher body 4 is made of flexible Cordura nylon, which allows the stretcher to be folded and stored. The insulation layer 11 is made of aerospace-grade aerogel, which can block the high temperature from spreading outward, reduce heat loss, and reduce the weight of the heated sleeping bag 6. The waterproof layer 12 is made of Cordura nylon, which ensures that the heating wire layer 10 and the circuit have waterproof performance and can work normally in humid or rainy environments.

[0039] It should be noted that the control board uses low-temperature resistant FR-4 board material, which can maintain stable electrical performance at -40℃ to +125℃. The PI substrate is suitable for flexible circuits, is not easily brittle at low temperatures, and is suitable for compact space layout. Core chips, capacitors and other components must meet military-grade standards of -55℃ to +125℃ to avoid failure of ordinary consumer-grade components at low temperatures. The motherboard surface is coated with an organic silicone coating to isolate it from cold-region moisture and corrosive gases. The ribbon cables and connectors use rubber sealing rings and metal shields to prevent condensation from seeping in and causing short circuits at low temperatures.

[0040] It should be noted that the controller 7 is preset to a temperature range of 46-50℃ upon initial startup, which is maintained for 15 minutes before decreasing to a temperature range of 32-37℃. This can inactivate more than 95% of coronaviruses and bacteria, keeping the inner wall of the heated sleeping bag 6 dry and preventing microbial residue.

[0041] It should be noted that the outer layer of the blood pressure monitor cuff 41 is made of Cordura nylon, which has advantages such as high wear resistance, resistance to severe cold, and waterproofing. The middle insulation layer is filled with aerogel material, which has a low thermal conductivity and can effectively block the low temperature outside. At the same time, it is lightweight, so as to avoid the cuff 41 being too thick and affecting the wearing and measurement accuracy. The skin contact layer is made of wool blend fabric, which utilizes the warmth and moisture absorption of natural wool to reduce the interference of low temperature on the measurement. Kevlar fiber is used in the edges of the cuff 41 and the Velcro 42 adhesive area, which are prone to wear, to further improve wear resistance and durability.

[0042] It should be noted that components such as temperature sensing block 39 and temperature sensor 40 are all located inside and will not come into direct contact with the human body.

[0043] Working principle: When using a stretcher to carry the wounded, pull the waterproof layer 12 at both ends to unfold the folded carrying bag 1 into a stretcher via the connecting part 2. Place the wounded person inside the heated sleeping bag 6, press the power switch 47 to start the power bank 8 to power all devices. The temperature sensor 40 is preset to transmit information to the wireless module 23 via Bluetooth when it detects that the temperature inside the heated sleeping bag 6 is below 5℃. The wireless module 23 transmits the information to the controller 7 via the transmission line 24. The controller 7 transmits the command to the heating wire layer 10 via the control line 25. The controller 7 is preset to start with a temperature range of 46-50℃, maintain it for 15 minutes, and then reduce it to a temperature range of 32-37℃. The controller 7 will automatically adjust the working state of the heating wire layer 10. When the heat generated by the heating wire layer 10 reaches 46-50℃, it is transmitted through the graphene layer. 9. The heat is conducted and diffused evenly to the inner wall of the heated sleeping bag 6, keeping the inner wall of the heated sleeping bag dry and effectively inactivating viruses and bacteria, avoiding cross-infection of the wounded. After 15 minutes, the temperature automatically drops to 32-37℃ to maintain a constant temperature environment inside the heated sleeping bag 6. After the blood pressure monitor 22 is worn on the wounded's wrist, the cuff 41 is connected by Velcro 42, and then the cuff 41 is passed through the hole in the temperature sensing pad 35 to secure the blood pressure monitor 22. The thermistor 36 is preset to block the power to the blood pressure monitor 22 when the temperature of the temperature sensing pad 35 is detected to be below 32℃, so that the blood pressure monitor 22 stops working and prevents the blood vessels of the wounded from contracting due to low temperature, which may cause measurement data errors. When the temperature of the temperature sensing pad 35 reaches 32-37℃, the thermistor 36 turns on the power to the blood pressure monitor 22, so that the blood pressure monitor 22 begins to monitor the wounded's blood pressure.

[0044] When the stretcher is not needed, the heated sleeping bag 6 and the stretcher body 4 can be folded together. Pulling the zipper pulls 21 at both ends allows the stretcher body 4 to be stored as a carrying bag 1 through the connecting part 2. The carrying bag 1 can be carried on the back via the shoulder strap 3 or in the hand via the handle 19, making it convenient for medical personnel to carry. When the control switch 45 is pushed downwards, the control switch 45 extends the switch wire 31, which drives the movable rod 30 to move towards the end closer to the control box 20. The rubber tube 32 allows the switch wire 31 to still be pulled when the stretcher is in the stored state. The movable rod 30 drives the fixed ring 34 and the connecting rod 46 to move. The fixed ring 34 compresses the telescopic spring 33, which shortens, causing the connecting rod 46 to strike the power switch 47, activating the portable power supply 8 to power all equipment, allowing rescue personnel to carry the stored equipment. The heating function of the heated sleeping bag 6 can be turned on in advance while the stretcher is en route to the rescue, ensuring that the injured person is in a constant temperature environment as soon as they arrive at the rescue site. When the portable power supply 8 is turned on, it transmits power to the indicator light 43 through the indicator line 29, causing the indicator light 43 to light up, indicating that all equipment is powered on. This makes it easier for rescuers to check whether the power is on when carrying the stretcher in its stored state, avoiding power waste. When the control switch 45 is released, the telescopic spring 33 releases its elasticity and extends, pushing the fixed ring 34 and the movable rod 30 to move away from the fixed rod 28. The movable rod 30 shortens the switch line 31 and drives the control switch 45 back to its original position. When the fixed ring 34 is pushed down again, the portable power supply 8 can be turned off, and the indicator light 43 goes out, indicating that all equipment is powered off.

[0045] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A portable emergency care stretcher, comprising a stretcher body (4), characterized in that: Handles (5) are arrayed at both ends of the stretcher body (4). A heated sleeping bag (6) is provided at the upper end of the stretcher body (4). A bag cap (18) is fixedly connected to the side end of the heated sleeping bag (6). The heated sleeping bag (6) includes a graphene layer (9), a heating wire layer (10), a heat insulation layer (11), and a waterproof layer (12). The waterproof layer (12) is fixedly connected to the stretcher body (4). A control box (20) is fixedly installed at the upper end of the stretcher body (4) away from the heated sleeping bag (6). A controller (7) is fixedly installed on the inner wall of the control box (20). The output end of the controller (7) is fixedly connected to a control... The control line (25) is connected to the heating wire layer (10) by passing through the stretcher body (4) and the heating sleeping bag (6). The power supply end of the controller (7) is fixedly connected to the power cord (26). The other end of the power cord (26) is fixedly connected to the mobile power supply (8). The side end of the mobile power supply (8) is provided with a power switch (47). The upper end of the inner wall of the heating sleeping bag (6) is fixedly installed with a temperature sensing block (39). The side end of the temperature sensing block (39) is fixedly installed with a temperature sensor (40). A blood pressure monitor (22) is provided at the wrist of the injured person in the heating sleeping bag (6).

2. The portable emergency care stretcher according to claim 1, characterized in that: A cuff (41) is fixedly installed at the lower end of the blood pressure monitor (22), and a temperature-sensing pad (35) is fixedly installed at the lower end of the inner wall of the heated sleeping bag (6).

3. A portable emergency care stretcher according to claim 2, characterized in that: The input end of the blood pressure monitor (22) is fixedly connected to a data line (37), and the other end of the data line (37) is fixedly connected to a thermistor (36). The sensing end of the thermistor (36) is fixedly connected to a temperature sensing pad (35), and the input end of the thermistor (36) is fixedly connected to a connecting line (38), which passes through the temperature sensing block (39) and connects to the control line (25).

4. A portable emergency care stretcher according to claim 3, characterized in that: The stretcher body (4) has a connecting part (2) at the end away from the heated sleeping bag (6). Zipper heads (21) are symmetrically installed at the ends of the connecting parts (2). Shoulder straps (3) are symmetrically installed between the connecting parts (2). Handles (19) are fixedly installed between the shoulder straps (3). The heated sleeping bag (6) is divided into three areas along its length: chest area (13), abdominal area (14), and lower limb area (15). An abdominal connector (16) connects the chest area (13) and the abdominal area (14). A lower limb connector (17) connects the abdominal area (14) and the lower limb area (15).

5. A portable emergency care stretcher according to claim 4, characterized in that: The input end of the controller (7) is fixedly connected to a transmission line (24), the other end of the transmission line (24) is fixedly connected to a wireless module (23), the power supply end of the wireless module (23) is fixedly connected to a power line (27), and the other end of the power line (27) is connected to a mobile power supply (8).

6. A portable emergency care stretcher according to claim 1, characterized in that: A fixed rod (28) is fixedly installed on the upper end of the control box (20) away from the mobile power supply (8). A movable rod (30) is slidably installed on the inner wall of the fixed rod (28). A telescopic spring (33) is fixedly installed on the outer wall of the movable rod (30). A fixed ring (34) is fixedly installed on the end of the movable rod (30) away from the fixed rod (28). A connecting rod (46) is fixedly installed on the end of the fixed ring (34) close to the mobile power supply (8).

7. A portable emergency care stretcher according to claim 4, characterized in that: The shoulder strap (3) is provided with a slide rail (44) at one end away from the stretcher body (4). A control switch (45) is slidably provided on the inner wall of the slide rail (44). A switch wire (31) is fixedly connected to the upper end of the control switch (45). A rubber tube (32) is fixedly installed on the outer wall of the switch wire (31). The switch wire (31) passes through the stretcher body (4) and is connected to the side end of the movable rod (30) near the fixed rod (28). The rubber tube (32) passes through the stretcher body (4) and is connected to the lower end of the fixed rod (28).

8. A portable emergency care stretcher according to claim 7, characterized in that: An indicator light (43) is fixedly installed on the upper end of the slide rail (44). An indicator line (29) is fixedly connected to the input end of the indicator light (43), and the indicator line (29) passes through the stretcher body (4) and is connected to the mobile power supply (8).

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