Rewarming system for treating and curing human body hypothermia

Abstract

According to the rewarming system for treating and curing the human body hypothermia, a ventilation rewarming circulation channel is designed and comprises an air inlet communicated with a heat preservation sleeping bag, an air inlet channel, an air power device, an air outlet connecting sleeve, an air heating unit, an air guide switching assembly and an air outlet communicated with the heat preservation sleeping bag. And the ventilation and rewarming functions of the wounded with the hypothermia can be better realized. A breathing rewarming channel is designed, a heating channel comprises an oxygen supply inlet, a breathing ventilation module, an inner breathing heating module, a switching assembly, a breathing heating interface, an outer breathing heating module and a breathing mask, and a humidifying channel comprises a breathing atomization module, a switching assembly, a breathing heating interface, an outer breathing heating module and a breathing mask. And the breathing rewarming function of the wounded with the hypothermia can be better realized. An infusion rewarming channel is designed, the infusion rewarming channel comprises an infusion pump door, an infusion unit and a heating unit, and the infusion rewarming function of the wounded with the hypothermia can be better achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of rewarming, and in particular to a rewarming system for treating human hypothermia. Background Art

[0002] The inventor of the present invention previously designed a patented invention technology with application number CN2022101052667, entitled "A Ventilation and Rewarming Device," for rewarming patients with hypothermia. The inventor of the present invention previously designed a patented invention technology with application number CN2022101051556, entitled "An Assisted Respiratory Rewarming Device," for rewarming patients with hypothermia. The inventor of the present invention also previously designed a patented invention technology with application number CN 2022101051541, entitled "An Infusion Warming Device," for rewarming infusions of patients with hypothermia. The inventor of the present invention optimized the design of the previously designed ventilation and rewarming device, the assisted respiratory rewarming device, and the infusion warming device, forming a new rewarming system that can better achieve the ventilation and rewarming functions, the respiratory and rewarming functions, and the infusion rewarming functions. Summary of the Invention

[0003] The present invention aims to solve the problems existing in the prior art and provides a rewarming system for treating human hypothermia.

[0004] The present invention solves the above technical problems through the following technical solutions:

[0005] The present invention provides a rewarming system for treating human hypothermia, which is characterized by comprising:

[0006] A thermal insulation sleeping bag, comprising a sleeping bag body, an air supply pipe and an air return pipe inserted into the sleeping bag body, and a first temperature sensor disposed inside the sleeping bag body;

[0007] A ventilation and rewarming host comprises a first shell, on which an air inlet connected to the return air duct and an air outlet connected to the supply air duct are provided, a first main control unit, an air dynamic device and a gas heating unit are fixed in the first shell, the air inlet is connected to the air dynamic device through an air inlet duct, the air dynamic device is connected to the inlet of the gas heating unit through an air outlet connecting sleeve, and the outlet of the gas heating unit is connected to the air outlet through an air guide adapter assembly, the first main control unit is used to control the air dynamic device to extract air from the heat-insulating sleeping bag through the return air duct, the air inlet and the air inlet duct, and send the air into the gas heating unit through the air outlet connecting sleeve for heating, the heated air is sent to the heat-insulating sleeping bag through the air guide adapter assembly, the air outlet and the supply air duct in turn for ventilation and reheating, the temperature inside the heat-insulating sleeping bag detected by the first temperature sensor is received, and if the temperature does not reach the first set temperature, the gas heating unit is controlled to heat until the temperature reaches the first set temperature;

[0008] A respiratory rewarming host comprises a second shell, an oxygen supply inlet and a respiratory heating interface are arranged on the second shell, a second main control unit, a respiratory ventilation module, an internal respiratory heating module, a heating and humidification adapter component and a respiratory atomization module are fixed in the second shell, an external respiratory heating module and a respiratory mask are arranged outside the second shell, a second temperature sensor is arranged at the end of the external respiratory heating module, the oxygen supply inlet, the respiratory ventilation module and the internal respiratory heating module are connected in sequence, the outlet of the internal respiratory heating module and the outlet of the respiratory atomization module are connected to the first inlet and the second inlet of the heating and humidification adapter component respectively, and the outlet of the heating and humidification adapter component is connected to the respiratory heating interface and the external The breathing heating module is connected to the breathing mask, and the second main control unit is used to control the breathing ventilation module to extract breathing gas through the oxygen supply inlet and send it to the internal breathing heating module for heating. The heated breathing gas enters the heating and humidification adapter assembly, and at the same time controls the breathing atomization module to generate atomized liquid and enter the heating and humidification adapter assembly. The atomized liquid humidifies the heated breathing gas in the heating and humidification adapter assembly, controls the external breathing heating module to reheat and keep the heated and humidified breathing gas warm and send it to the breathing mask, receives the temperature detected by the second temperature sensor, and controls the internal and external breathing heating modules to heat until the temperature reaches the second set temperature if the temperature does not reach the second set temperature;

[0009] An infusion rewarming host includes a third shell, on which an infusion bracket and a heating unit for hanging an infusion bag are provided, a third main control unit and an infusion unit are fixed in the third shell, an infusion tube of the infusion bag is clamped in the infusion unit and passed through the heating unit before being connected to a human body in a thermal sleeping bag, a third temperature sensor is provided at the end of the heating unit, the third main control unit is used to control the infusion unit to deliver liquid, and control the heating unit to heat the liquid, receive the temperature detected by the third temperature sensor, and control the heating unit to heat until the temperature reaches the third set temperature if the temperature does not reach the third set temperature.

[0010] The positive progress effect of the present invention is:

[0011] The present invention designs an optimized ventilation and rewarming circulation channel: an air inlet connected to a thermal insulation sleeping bag - an air inlet duct - an aerodynamic device - an air outlet connecting sleeve - a gas heating unit - an air guide adapter assembly - an air outlet connected to a thermal insulation sleeping bag. The design of the entire ventilation and rewarming circulation channel is more reasonable and more conducive to the circulation of air, thereby better realizing the ventilation and rewarming function of hypothermia patients.

[0012] The present invention designs an optimized respiratory rewarming channel, wherein the heating channel is: oxygen supply inlet - respiratory ventilation module - internal respiratory heating module - adapter component - respiratory heating interface - external respiratory heating module - respiratory mask, and the humidification channel is: respiratory atomization module - adapter component - respiratory heating interface - external respiratory heating module - respiratory mask. The design of the entire respiratory rewarming channel is more reasonable and more conducive to human breathing, thereby better realizing the respiratory rewarming function of hypothermia patients.

[0013] The present invention designs an optimized infusion rewarming channel, which is: infusion pump door-infusion unit-warming unit. The design of the entire infusion rewarming channel is more reasonable and more conducive to human infusion, thereby better realizing the infusion rewarming function of hypothermia patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic diagram of the structure of the rewarming system of a preferred embodiment of the present invention.

[0015] Figure 2 This is a schematic structural diagram of a thermal insulation sleeping bag according to a preferred embodiment of the present invention.

[0016] Figure 3 This is a control relationship diagram of the ventilation and rewarming host in a preferred embodiment of the present invention.

[0017] Figure 4-12 This is a structural diagram of a ventilation and rewarming host according to a preferred embodiment of the present invention.

[0018] Figure 13 This is a first AC / DC path management circuit diagram of a preferred embodiment of the present invention.

[0019] Figure 14 FIG. 4 is a diagram of a first voltage conversion circuit according to a preferred embodiment of the present invention.

[0020] Figure 15 This is a control relationship diagram of the respiratory rewarming host in a preferred embodiment of the present invention.

[0021] Figure 16-23 This is a structural diagram of a respiratory rewarming host according to a preferred embodiment of the present invention.

[0022] Figure 24 This is a first one-key switch circuit diagram of a preferred embodiment of the present invention.

[0023] Figure 25 FIG. 4 is a diagram of a second voltage conversion circuit according to a preferred embodiment of the present invention.

[0024] Figure 26 This is a fan drive circuit diagram of a preferred embodiment of the present invention.

[0025] Figure 27FIG. 1 is a diagram of an atomization drive circuit according to a preferred embodiment of the present invention.

[0026] Figure 28 This is a circuit diagram of external breathing heating according to a preferred embodiment of the present invention.

[0027] Figure 29 This is a control relationship diagram of the infusion rewarming host in a preferred embodiment of the present invention.

[0028] Figure 30-31 This is a structural diagram of the infusion rewarming host in a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0030] like Figure 1 As shown, an embodiment of the present invention provides a rewarming system for treating hypothermia, which includes a thermal insulation sleeping bag 100, a ventilation rewarming main unit 200, a respiratory rewarming main unit 300, and an infusion rewarming main unit 400. The ventilation rewarming main unit 200 implements ventilation and rewarming within the thermal insulation sleeping bag 100, thereby achieving the ventilation and rewarming function for the hypothermic patient in the thermal insulation sleeping bag 100; the respiratory rewarming main unit 300 implements the respiratory rewarming function for the hypothermic patient in the thermal insulation sleeping bag 100; and the infusion rewarming main unit 400 implements the infusion rewarming function for the hypothermic patient in the thermal insulation sleeping bag 100.

[0031] 1. Thermal Insulation Sleeping Bag 100

[0032] like Figure 2 As shown, the thermal insulation sleeping bag 100 includes a sleeping bag body 101, on which an air supply protective cover 102 and an air return protective cover 103 are inserted and fixed. An air supply pipe 104 is fixed on the air supply protective cover 102, and an air return pipe 105 is fixed on the air return protective cover 103.

[0033] The inner end of the air supply duct 104 connects to an air supply connecting duct 106, which is located within the sleeping bag bladder 101 and arranged along the central axis of the sleeping bag bladder's length. On either side of the air supply connecting duct 106, four air supply branch ducts 107 are connected. These four air supply branch ducts 107 are located within the sleeping bag bladder 101 and arranged along its width. The four air supply branch ducts 107 on one side are symmetrically arranged with the four air supply branch ducts 107 on the other side. Each of the four air supply branch ducts 107 is located above the chest, abdomen, thigh, and calf of the human body within the sleeping bag bladder 101, ensuring uniform air supply to the hypothermia victim. The outer end of the air supply duct 104 is funnel-shaped and connects to the ventilation and rewarming main unit 200. The inner end of the return air duct 105 is located within the sleeping bag bladder 101, and the outer end is connected to the ventilation and rewarming main unit 200.

[0034] In this embodiment, the thermal insulation sleeping bag is a sleeping bag sac structure. In order to achieve the purpose of uniform air supply, 8 relatively evenly arranged air supply ports are provided on the inner surface of the thermal insulation sleeping bag; the air supply pipe 104 and the return air pipe 105 of the thermal insulation sleeping bag are both connected to the ventilation and rewarming host 200 to form a ventilation and rewarming circulation loop, which is used for the circulation and transportation of warm air gas to realize the rewarming function of hypothermia patients in the thermal insulation sleeping bag.

[0035] A first temperature sensor 108 is provided within the sleeping bag body 101. This first temperature sensor 108 utilizes an NTC thermistor and can be mounted on the outer wall of the air supply tube 104 located within the sleeping bag body 101. A wire 1081 of the first temperature sensor 108 is routed along the outer wall of the air supply tube 104, passed through the air supply protective cover 102, and then electrically connected to the ventilation and rewarming main unit 200. The first temperature sensor 108 is powered by the ventilation and rewarming main unit 200.

[0036] Two opposite sides of the sleeping bag body 101 are provided with zipper-type infusion disposal ports for the infusion tube to pass through, so as to facilitate the insertion of the infusion tube.

[0037] The sleeping bag body 101 is provided with a zipper opening corresponding to the position of the human body from the neck to the feet, and the zipper opening is matched with a two-way waterproof zipper 110 to facilitate the entry of hypothermia patients; the sleeping bag body 101 is provided with a head and face opening 111, and the head and face opening 111 is provided with a tightening rope (refer to the head tightening rope of a raincoat).

[0038] The thermal sleeping bag is used by unzipping the waterproof zipper 110. The hypothermic patient enters the thermal sleeping bag 100 and lies down inside. The patient's head and face are exposed through the head and face opening 111, which is then tightened with the tightening cord. The ventilation and rewarming main unit 200 delivers heated air into the air supply pipe 104. The heated air in the air supply pipe 104 flows into the sleeping bag body 101 through the air supply connecting pipe 106 and the air supply branch pipes 107. The heated air is evenly distributed within the sleeping bag body 101, providing rapid rewarming for the hypothermic patient. The first temperature sensor 108 detects the temperature inside the sleeping bag bladder 101 and transmits it to the ventilation and rewarming host 200 through the wire 1081. The ventilation and rewarming host 200 stops the air supply operation to the sleeping bag bladder 101 when the temperature inside the sleeping bag bladder 101 rises to the corresponding specified value. The ventilation and rewarming host 200 starts the air supply operation to the sleeping bag bladder 101 again when the temperature inside the sleeping bag bladder 101 drops to the corresponding specified value, thereby realizing the rewarming function of the thermal insulation sleeping bag.

[0039] 2. Ventilation and reheating host 200

[0040] like Figure 3-14 As shown, the ventilation and rewarming host 200 includes a first shell 201, on which an air inlet 202 connected to the return air duct 105 and an air outlet 203 connected to the supply air duct 104 are provided. The first shell 201 is fixedly connected to the supply air protection cover 102 and the return air protection cover 103.

[0041] A first AC power interface 204, a first DC power interface 205, and a first data transmission interface 206 are embedded and fixed on the first housing 201. The first AC power interface 204 is a socket-type filter. A first chevron-shaped socket plug 207 can be plugged into the first AC power interface 204. One end of the first chevron-shaped socket plug 207 is fixed to the first housing 201. When the first AC power interface 204 is not in use, the first chevron-shaped socket plug 207 is plugged in to achieve dust and water resistance. When the first AC power interface 204 is in use, the first chevron-shaped socket plug 207 is removed and an AC power source is plugged in. The first DC power interface 205 is a DC power socket. A first DC power waterproof plug 208 can be installed on the first DC power interface 205. One end of the first DC power waterproof plug 208 is fixed to the first housing 201. When the first DC power interface 205 is not in use, the first DC power waterproof plug 208 is plugged in to provide dust and water protection. When the first DC power interface 205 is needed, the first DC power waterproof plug 208 is removed and a DC power supply is plugged in. The first data transmission interface 206 uses a Type-C interface.

[0042] A first switching power supply 209 , a first power management unit 210 , a first main control unit 211 , an air dynamic device 212 and a gas heating unit 213 are fixed in the first housing 201 .

[0043] The air inlet 202 is connected to the air dynamic device 212 via the air inlet duct 214. The air dynamic device 212 is connected to the inlet of the gas heating unit 213 via the air outlet connector 215. The outlet of the gas heating unit 213 is connected to the air outlet 203 via the air guide adapter assembly 216. The first main control unit 211 is used to control the air dynamic device 212 to extract air from the thermal sleeping bag 100 through the return air duct 105, the air inlet 202, and the air inlet duct 214. The air is then sent into the gas heating unit 213 through the air outlet connector 215 for heating. The heated air is then sequentially sent to the thermal sleeping bag 100 for ventilation and reheating through the air guide adapter assembly 216, the air outlet 203, and the air supply pipe 104. The first main control unit 211 receives the temperature inside the thermal sleeping bag 100 detected by the first temperature sensor 108. If the temperature does not reach the first set temperature, the first main control unit 211 controls the gas heating unit 213 to heat the air until the temperature reaches the first set temperature.

[0044] The first switching power supply 209 is electrically connected to the first AC power interface 204. When the first AC power interface 204 receives 220V AC power, the first AC power interface 204 filters the received 220V AC power and transmits it to the first switching power supply 209. The first switching power supply 209 then converts the filtered 220V AC power into 24V DC power. The first switching power supply 209 is a commercially available product.

[0045] The first power management unit 210 supplies power to the ventilation and rewarming host 200 and the thermal sleeping bag 100. The first power management unit 210 includes a first AC / DC path management circuit and a first voltage conversion circuit. The first AC power interface 204, the first switching power supply 209, the first AC / DC path management circuit and the first voltage conversion circuit are electrically connected in sequence to form a first AC power supply circuit. The first DC power interface 205, the first AC / DC path management circuit and the first voltage conversion circuit are electrically connected in sequence to form a first DC power supply circuit.

[0046] The first main control unit 211 uses an MCU chip, model number is GD32F103C8T6.

[0047] The air power device 212 adopts a fan (such as a turbocharged fan), and the turbocharged fan mainly sucks the air in the thermal insulation sleeping bag 100 and sends it into the gas heating unit 213 for secondary heating.

[0048] The gas heating unit 213 includes four first heating tubes 2131 arranged side by side. These four first heating tubes 2131 are sequentially connected to each other. The inlet of the first first heating tube 2131 is connected to the air outlet connection sleeve 215, and the outlet of the last first heating tube 2131 is connected to the air guide adapter assembly 216. Each first heating tube 2131 is equipped with a PTC heating plate 2132, and the inner wall of each first heating tube 2131 has a U-shaped corrugated structure. Furthermore, the gas heating unit 213 is wrapped with a heating protective cover 2133, and a foam pad 2134 is fixed to the back of the heating protective cover 2133.

[0049] The air guide adapter assembly 216 includes an air guide adapter frame 2161 with a triangular cross-section fixed inside the first shell 201, the air guide adapter frame 2161 is covered with an air guide adapter cover 2162, the top of the side of the air guide adapter frame 2161 is provided with an air guide adapter interface 2163 connected to the outlet of the gas heating unit 213, and an arc-shaped air guide plate 2164 is fixed to the upper part of the air guide adapter frame 2161 for guiding the air entering the air guide adapter interface 2163, and the lower part of the inner cavity of the air guide adapter frame 2161 is connected to the air outlet 203.

[0050] The top of the side of the air inlet duct 214 is fixedly connected to the air inlet 202. An arc-shaped air guide plate 2141 is fixed to the upper part of the air inlet duct 214 to guide the air entering the air inlet 202. The lower part of the air inlet duct 214 is connected to the inlet of the aerodynamic device 212.

[0051] In addition, a first control panel 217 and a first switch 218 are embedded in the front of the first housing 201. The first control panel 217 and the first switch 218 are both electrically connected to the first control unit 211. The first control panel 217 facilitates the operator to set the operating temperature and observe the operating status. The first switch 218 is used to control the ventilation and reheating host to turn on and off.

[0052] First corner guards 219 are fixed at the four corners of the front and back of the first shell 201 , respectively. A first retractable handle 220 is fixed at the top of the first shell 201 .

[0053] The power supply principle of the ventilation and rewarming host is as follows: only when the first AC power interface 204 is connected to AC power or when the first AC power interface 204 is connected to AC power and the first DC power interface 205 is connected to DC power, the first switching power supply 209 is used to convert the AC power of 220V to the first DC power of 24V, and the first AC / DC path management circuit is used to select and transmit the first DC power of 24V to the first voltage conversion circuit, which is used to convert the first DC power of 24V to the target DC power of 5V; only when the first DC power interface 205 is connected to DC power, the first AC / DC path management circuit is used to select and transmit the DC power of 24V to the first voltage conversion circuit, which is used to convert the DC power of 24V to the target DC power of 5V. Therefore, when only AC power is supplied, the ventilation and rewarming host is powered by AC power; when only DC power is supplied, the ventilation and rewarming host is powered by DC power; when both AC and DC power are supplied, the ventilation and rewarming host is powered by AC power, that is, the AC power supply has a higher priority than the DC power supply.

[0054] like Figure 13 As shown, the first AC / DC path management circuit includes: an AC terminal ACIN connected to the first switching power supply 209, pins 1 and 2 of the AC terminal ACIN are grounded through capacitors CA3 and CA4 connected in parallel, and pins 3 and 4 are grounded, pins 1 and 2 of the AC terminal ACIN are electrically connected to pins 1 and 3 of the Schottky transistor DA2, and are also electrically connected to the base of the transistor QA8 through a resistor RA13, a DC terminal DCIN connected to the first DC power supply interface 205, pins 1 and 2 of the DC terminal DCIN are grounded through capacitors CA5 and CA6 connected in parallel, and pins 3 and 4 are grounded, and the DC terminal DCIN Pins 1 and 2 are electrically connected to the collector of transistor QA8 through resistor RA11, and are also electrically connected to the drain of field-effect transistor QA3. The base of transistor QA8 is grounded through resistor RA12, the collector is electrically connected to the base of transistor QA7, and the emitter is grounded. The base of transistor QA7 is grounded through resistor RA10, and the collector is connected to the gate of field-effect transistor QA3, one end of resistor RA8, and the gate and emitter of field-effect transistor QA4 through resistor RA9. The source of field-effect transistor QA3 and the source of field-effect transistor QA4 are both connected to the other end of resistor RA8. The drain of field-effect transistor QA4 and pin 2 of Schottky transistor DA2 are both electrically connected to the first voltage conversion circuit.

[0055] The first AC / DC path management circuit combines Figure 13When only AC power is input, AC power is used for power supply: when only ACIN is used for power supply, transistor QA8 is turned on, which will lower the collector voltage of transistor QA7, transistor QA7 is turned off, field effect transistors QA3 and QA4 are turned off, and ACIN turns on Schottky transistor DA2 for power supply, which is then converted into DC5V by the first voltage conversion circuit.

[0056] When only DC power is input, DC power is used for power supply: when only DCIN is used for power supply, transistor QA8 is cut off, transistor QA7 is turned on, field effect transistors QA3 and QA4 are turned on, the VIN network is powered by DCIN, and then converted into DC5V by the first voltage conversion circuit.

[0057] When both AC and DC inputs are available, AC power is used first: When ACIN and DCIN are supplying power at the same time, transistor QA8 is turned on, which lowers the collector voltage of transistor QA7. Transistor QA7 is turned off, and field-effect transistors QA3 and QA4 are turned off. The DC power supplied by DCIN cannot be output to the VIN network. VIN only turns on Schottky transistor DA2 through ACIN to supply power, and then is converted to DC5V by the first voltage conversion circuit.

[0058] like Figure 14 As shown, the first voltage conversion circuit includes: the anode of the diode DD5 is connected to the drain of the field effect transistor QA4 and the pin 2 of the Schottky transistor DA2, and the cathode is electrically connected to the pin 1 of the DC-DC power supply module UD1 through the inductor LDM1 and the inductor LDM2, the electrolytic capacitor CD1 and the capacitor CD2 connected in parallel between the inductor LDM1 and the inductor LDM2 are grounded, the pin 1 of the DC-DC power supply module UD1 is grounded through the capacitor CD3 and the pin 2 is grounded, the pin 3 of the DC-DC power supply module UD1 is grounded through the capacitor CD4, and DC5V is output through the inductor DR1 to power the electronic devices in the ventilation and reheating host except the first main control unit 211.

[0059] The first voltage conversion circuit also includes: the IN pin (pin 1) and EN pin (pin 3) of the voltage regulator chip UD4 are connected to DC5V, the GND pin (pin 2) is grounded, the EN pin (pin 3) of the voltage regulator chip UD4 is grounded through capacitor CD15, the BP pin (pin 4) is grounded through capacitor CD17, the OUT pin (pin 5) outputs 3.3V to power the first main control unit 211, and is also grounded through capacitor CD16 and electrolytic capacitor CD18 respectively.

[0060] The working principle of the ventilation and rewarming host is as follows: press the first switch 218, the first main control unit 211 controls the air dynamic device 212, the gas heating unit 213 and the first temperature sensor 108 to start working, and the air dynamic device 212 extracts air from the thermal insulation sleeping bag 100 through the return air duct 105, the air inlet 202 and the air inlet duct 214, and then sends the extracted air into the gas heating unit 213 through the air outlet connecting sleeve 215 for heating. After heating, the air flows into the sleeping bag body 101 through the air guide adapter component 216, the air outlet 203, the air supply pipe 104, the air supply connecting pipe 106 and each air supply branch pipe 107, and the warm air is evenly distributed in the sleeping bag body 101, which has a rapid rewarming function for hypothermia patients. During the rewarming process, the first temperature sensor 108 in the thermal sleeping bag continuously detects the temperature inside the thermal sleeping bag 100 and transmits the temperature to the first main control unit 211 via the wire 1081. If the temperature inside the thermal sleeping bag has not reached the first set temperature, the first main control unit 211 controls the gas heating unit 213 to continue heating. If the temperature inside the thermal sleeping bag has reached the first set temperature, the first main control unit 211 controls the gas heating unit 213 to suspend heating. If the temperature inside the thermal sleeping bag has not reached the set temperature again, heating is restarted. This cycle repeats until the temperature inside the thermal sleeping bag is balanced and consistent with the set temperature.

[0061] 3. Respiratory Rewarming Unit 300

[0062] like Figure 15-28 As shown, the respiratory rewarming host 300 includes a second shell 301 , on which an oxygen supply inlet 302 and a respiratory heating interface 303 are provided.

[0063] The second housing 301 is embedded with a second AC power interface 304, a second DC power interface 305, and a second data transmission interface 306. The second AC power interface 304 is a socket-type filter. A second chevron-shaped socket plug 307 can be plugged into the second AC power interface 304. One end of the second chevron-shaped socket plug 307 is fixed to the second housing 301. When the second AC power interface 304 is not in use, the second chevron-shaped socket plug 307 is plugged in to provide dust and water resistance. When the second AC power interface 304 is needed, the second chevron-shaped socket plug 307 is removed and an AC power source is plugged in. The second DC power interface 305 is a DC power socket. A second DC power waterproof plug 308 can be installed on the second DC power interface 305. One end of the second DC power waterproof plug 308 is fixed to the second housing 301. When the second DC power interface 305 is not in use, the second DC power waterproof plug 308 is plugged in to provide dust and water protection. When the second DC power interface 305 is needed, the second DC power waterproof plug 308 is removed and a DC power supply is plugged in. The second data transmission interface 306 uses a Type-C interface.

[0064] The second housing 301 is provided with an inwardly extending battery compartment 309. A shock-absorbing foam 310 is installed within the battery compartment 309, which houses a first battery 311. A battery cover 312 is provided over the battery compartment 309. To enhance the structural strength and electromagnetic compatibility of the respiratory rewarming device, the second housing 301 is constructed of aluminum alloy. The battery cover 312 is removable, allowing for easy replacement of the first battery 311.

[0065] Securely mounted within the second housing 301 are a second switching power supply 313, a second power management unit 314, a second main control unit 315, a respiratory ventilation module 316, an internal respiratory heating module 317, a heating and humidification adapter assembly 318, and a respiratory atomization module 319. Externally disposed outside the second housing 301 are an external respiratory heating module 320 and a respiratory mask 321. A second temperature sensor 322 is disposed at the end of the external respiratory heating module 320. The respiratory ventilation module 316, the heating and humidification adapter assembly 318, and the respiratory atomization module 319 are arranged sequentially from bottom to top on the same side. The respiratory ventilation module 319 is positioned near the oxygen supply inlet 302, and the respiratory atomization module 319 is positioned near the respiratory heating interface 303. The second power management unit 314, the second main control unit 315, and the internal respiratory heating module 317 are arranged front to back on the other side. A disposable respiratory mask 321 is employed.

[0066] The oxygen supply inlet 302, the respiratory ventilation module 316 and the internal respiratory heating module 317 are connected in sequence, and the outlet of the internal respiratory heating module 317 and the outlet of the respiratory atomization module 319 are respectively connected to the first inlet and the second inlet of the heating and humidification adapter assembly 318, and the outlet of the heating and humidification adapter assembly 318 is connected to the respiratory mask 321 through the respiratory heating interface 303 and the external respiratory heating module 320. The second main control unit 315 is used to control the breathing ventilation module 316 to extract breathing gas through the oxygen supply inlet 302 and send it to the internal breathing heating module 317 for heating. The heated breathing gas enters the heating and humidification adapter component 318. At the same time, it controls the breathing atomization module 319 to generate atomized liquid and enter the heating and humidification adapter component 318. The atomized liquid humidifies the heated breathing gas in the heating and humidification adapter component 318. The external breathing heating module 320 is controlled to heat and keep the heated and humidified breathing gas warm for the second time and send it to the breathing mask 321. The temperature detected by the second temperature sensor 322 is received. If the temperature does not reach the second set temperature, the internal breathing heating module 317 and the external breathing heating module 320 are controlled to heat until the temperature reaches the second set temperature.

[0067] The second switching power supply 314 is electrically connected to the second AC power interface 304. When the second AC power interface 304 receives 220V AC power, the second AC power interface 304 filters the received 220V AC power and transmits it to the second switching power supply 314. The second switching power supply 314 then converts the filtered 220V AC power into 24V DC power. The second switching power supply 314 is a commercially available product.

[0068] The second power management unit 314 provides power to the respiratory rewarming host 300 and includes a second AC / DC path management circuit, a first one-touch switch circuit, a first power management module, and a second voltage conversion circuit. The second AC power interface 304, the second switching power supply 314, the second AC / DC path management circuit, and the second voltage conversion circuit are electrically connected in sequence to form a second AC power supply circuit. The second DC power interface 305, the second AC / DC path management circuit, and the second voltage conversion circuit are electrically connected in sequence to form a second DC power supply circuit. The first one-touch switch circuit is electrically connected to the second main control unit 315. The first battery 311, the first one-touch switch circuit, and the second voltage conversion circuit are electrically connected in sequence to form a first battery power supply circuit. The second AC / DC path management circuit and the first battery 311 are both electrically connected to the first power management module.

[0069] The second main control unit 315 uses an MCU chip, model GD32F103C8T6; the first power management module uses an IP2366 chip.

[0070] In addition, a second control panel 323 and a second switch 324 are embedded in the front of the second housing 301. The second control panel 323 and the second switch 324 are both electrically connected to the second control unit 315. The second control panel 323 facilitates the operator to set the operating temperature and observe the operating status. The second switch 324 is used to control the power on and off of the respiratory rewarming host.

[0071] Second corner protectors 325 are fixed to the four corners of the front and back of the second shell 301 , respectively. A second retractable handle 326 is fixed to the top of the second shell 301 .

[0072] The power supply principle of the respiratory rewarming host is as follows: when only the first battery 311 is supplying power and the second AC power interface 304 is connected to AC power to achieve AC power, or when the first battery 311 is supplying power, the second AC power interface 304 is connected to AC power to achieve AC power, and the second DC power interface 305 is connected to DC power to achieve DC power, the second switching power supply 314 is used to convert the AC power into the first DC power VIN, and the second AC / DC path management circuit is used to select and transmit the first DC power VIN to the second voltage conversion circuit, which is used to convert the first DC power VIN into the target DC power. It can be seen that compared with battery power and DC power, AC power has the highest priority and is the preferred power supply for the respiratory rewarming host.

[0073] When only the first battery 311 is supplying power and the second DC power interface 305 is connected to a DC power source, the second AC / DC path management circuit is configured to select and transmit the DC power VIN to the second voltage conversion circuit, which is configured to convert the DC power VIN into the target DC power. This indicates that when both battery and DC power are available but AC power is not, DC power takes precedence over battery power, and DC power is used to power the respiratory rewarming host.

[0074] Upon receiving a power-on signal from the second switch 324, the first one-touch switch circuit utilizes the first battery 311 to output a supply voltage VOUT to the second voltage conversion circuit. The second voltage conversion circuit then converts the supply voltage VOUT into a target DC voltage. When only the first battery 311 is providing power, the second voltage conversion circuit converts the supply voltage VOUT into the target DC voltage.

[0075] The first power management module is used to collect the first DC power VIN or DC power VIN output by the second AC / DC path management circuit and the voltage of the first battery 311, and control the first DC power VIN or DC power VIN to charge the first battery 311 when the first DC power VIN or DC power VIN is greater than a certain set threshold of the battery voltage.

[0076] At the start time of power-on, the respiratory rewarming host is powered by the first battery 311. After the start time of power-on, if only battery power is available, the first battery 311 is used to power the respiratory rewarming host. If both battery power and AC / DC power are available, the AC / DC power is used to power the respiratory rewarming host, with AC power taking precedence over DC power.

[0077] The specific circuit structure of the second AC / DC path management circuit is the same as that of the first AC / DC path management circuit. In the second AC / DC path management circuit, if only the second AC power interface 304 is connected to AC power, the first DC power VIN corresponding to the AC power is output; if only the second DC power interface 305 is connected to DC power, the DC power VIN corresponding to the DC power is output; and if both the second AC power interface 304 and the second DC power interface 305 are connected to DC power, the first DC power VIN corresponding to the AC power is output. This shows that in the second AC / DC path management circuit, AC power supply takes precedence over DC power supply.

[0078] like Figure 24 As shown, the first one-key switch circuit includes: the source of the field effect transistor QA1 is electrically connected to the first battery 311, and is also electrically connected to the collector of the transistor QA2 through the resistor RA5 and the resistor RA4; the drain of the field effect transistor QA1 is electrically connected to the second voltage conversion circuit to output the supply voltage VOUT to the second voltage conversion circuit, and is also electrically connected to one end of the resistor RA2; the gate of the field effect transistor QA1 is electrically connected to the cathode of the diode DA1 through the resistor RA6, and is also electrically connected to the collector of the transistor QA2 through the resistor RA4; the cathode of the diode DA1 is connected to the second switch 324 to receive the second switch 3 24, the anode of the diode DA1 powers on the second main control unit 315 through the resistor RA7, converts the KEY signal into a POWER signal and transmits it to the second main control unit 315, and is also electrically connected to pin 2 of the TVS tube TVS1. Pin 1 of the TVS tube TVS1 and the emitter of the transistor QA2 are grounded. The base of the transistor QA2 is grounded through the capacitor CA2 and is also grounded through the resistor RA3. It is also electrically connected to the other end of the resistor RA2 and is also electrically connected to the second main control unit 315 through the resistor RA1 to receive the ONEKRY signal sent by the second main control unit 315.

[0079] When the second switch 324 is pressed, the first one-key switch circuit receives the KEY signal, converts the KEY signal into a POWER signal through the diode DA1 and transmits it to the second main control unit 315. The second main control unit 315 knows that the power is on and outputs the ONEKRY signal to the first one-key switch circuit. The transistor QA2 in the first one-key switch circuit is turned on, QA1 is turned on, and the first battery 311 is used to output the power supply voltage VOUT.

[0080] like Figure 25As shown, the second voltage conversion circuit includes: the anode of the diode DD6 is connected to the drain of the field effect transistor QA4 in the second AC / DC path management circuit and the pin 2 of the Schottky transistor to receive the DC power VIN, and the cathode is electrically connected to the pin 1 of the DC-DC power module UD1 through the inductor LDM1 and the inductor LDM2; the anode of the diode DD5 is connected to the first one-key switch circuit to receive the power supply voltage VOUT, and the cathode is electrically connected to the inductor LDM1; the electrolytic capacitor CD1 and the capacitor CD2 connected in parallel between the inductor LDM1 and the inductor LDM2 are grounded; the pin 1 of the DC-DC power module UD1 is grounded through the capacitor CD3 and the pin 2 is grounded; the pin 3 of the DC-DC power module UD1 is grounded through the capacitor CD4, and the DC5V is output through the inductor DR1 to power electronic devices other than the second main control unit 315.

[0081] The second voltage conversion circuit also includes: the IN pin and EN pin of the voltage regulator chip UD4 are connected to DC5V, and the GND pin is grounded. The EN pin of the voltage regulator chip UD4 is grounded through capacitor CD15, the BP pin is grounded through capacitor CD17, and the OUT pin outputs 3.3V to power the second main control unit 315, and is also grounded through capacitor CD16 and electrolytic capacitor CD18 respectively.

[0082] like Figure 19 、 20 As shown in Figures 22 and 23, the respiratory ventilation module 316 includes a fan PCB board 3161 and a respiratory ventilation component. The fan PCB board 3161 is provided with a fan drive circuit.

[0083] The breathing ventilation assembly includes a fan base 3162 fixed in the second shell 301, a fan fixing sleeve 3163 is fixed on the fan base 3162, and a fan 3164 (such as a turbine fan) is fixed on the fan fixing sleeve 3163. The inlet of the fan 3164 is connected to one end of the air inlet duct pipe 3166 through the air inlet duct rubber part 3165, and the other end of the air inlet duct pipe 3166 is connected to the oxygen supply inlet 302. The outlet of the fan 3164 is connected to one end of the air outlet duct pipe 3167, and the other end of the air outlet duct pipe 3167 is connected to the internal breathing heating module 317 through the air outlet connecting pipe 3168. A one-way valve is provided in the air outlet connecting pipe 3168 near the air outlet pipe 3167. The air outlet connecting pipe 3168 is also connected to the air inlet duct pipe 3166. The air outlet connecting pipe 3168 is connected to a sampling pipe 3169, and a pressure sensor is provided in the sampling pipe 3169.

[0084] like Figure 26As shown, the fan drive circuit includes: the base of the transistor Q3 is electrically connected to the second main control unit 315 through the resistor R21 and is also grounded through the resistor R22; the emitter of the transistor Q3 is grounded; the collector of the transistor Q3 is electrically connected to the gate of the field effect transistor Q4 through the resistor R20; the gate of the field effect transistor Q4 is electrically connected to the source of the field effect transistor Q4 through the resistor R19; the source of the field effect transistor Q4 is connected to DC5V; the drain of the field effect transistor Q4 is electrically connected to pin 2 of the fan interface through the inductor DR4; both ends of the inductor DR4 are respectively grounded through capacitors C12 and C13; pin 1 of the fan interface is grounded and electrically connected to the second main control unit 315; pin 3 of the fan interface is electrically connected to the second main control unit 315 through the resistor R18, is also grounded through the resistor R18 and the capacitor C14, and is also electrically connected to the second main control unit 315 through the resistor R17; and the fan interface is connected to the fan 3164.

[0085] When the hypothermic patient is breathing passively, the second main control unit 315 controls the fan drive circuit to activate the fan 3164, generating negative pressure in the duct. Respiratory gas is drawn in through the air inlet duct 3166 and the oxygen supply inlet 302, and then delivered to the internal breathing heating module 317 for heating through the air outlet duct 3167 and the outlet connecting pipe 3168. The second main control unit 315 controls the fan drive circuit to adjust the power of the fan 3164 based on the pressure value detected by the pressure sensor, so that the pressure value reaches the target pressure value, that is, the power of the fan 3164 reaches the target power. When the hypothermic patient is breathing spontaneously, the second main control unit 315 controls the fan drive circuit to not activate the fan 3164. The hypothermic patient breathes spontaneously, drawing in external air through the air inlet duct 3166 and the oxygen supply inlet 302, and then delivering it directly to the internal breathing heating module 317 through the outlet connecting pipe 3168 for heating.

[0086] like Figure 21 and 22 As shown, the internal breathing heating module 317 includes a plurality of second heating tubes arranged side by side, adjacent second heating tubes are connected, the inlet of the first second heating tube is connected to the air outlet connecting tube 3168, and the outlet of the last second heating tube is connected to the first inlet of the heating and humidification adapter assembly 318 through the hot air connecting tube 3171, each second heating tube is provided with a PTC heating plate, the inner wall of each second heating tube is a U-shaped corrugated structure, and the outer layer of the plurality of second heating tubes arranged side by side is surrounded by a heating protection cover.

[0087] like Figure 19 and 22 As shown, the breathing atomization module 319 includes an atomization PCB board 3190 and an atomization component, and the atomization PCB board 3190 is provided with an atomization drive circuit.

[0088] The atomizer assembly includes a liquid storage cup 3191 secured within the second housing 301. The top of the liquid storage cup 3191 is provided with a liquid storage cup cover 3192. The bottom of the liquid storage cup 3191 is provided with a connected inclined cavity 3193. An atomizer pump is secured within the inclined cavity 3193. The outlet of the inclined cavity 3193 is sealed with an atomizer port 3194 via a silicone ring. The atomizer port 3194 is connected to the second inlet of the heating and humidification adapter assembly 318. The liquid storage cup 3191 is positioned to the side for easy removal and refilling.

[0089] like Figure 27 As shown, the atomization drive circuit includes: the base of the transistor Q8 is electrically connected to the second main control unit 315 through the resistor R43 and is also grounded through the resistor R44, the emitter of the transistor Q8 is grounded, the collector of the transistor Q8 is electrically connected to the gate of the field effect transistor Q9 through the resistor R45, the gate of the field effect transistor Q9 is electrically connected to the source of the field effect transistor Q9 through the resistor R46, the source of the field effect transistor Q9 is connected to DC5V, the drain of the field effect transistor Q9 is electrically connected to the pin 2 of the humidification interface JSQ, and is also grounded through the capacitor C28, the pin 1 of the humidification interface JSQ is grounded, and the humidification interface JSQ is connected to the atomization pump.

[0090] The second main control unit 315 is used to control the atomization drive circuit to drive the atomization pump to start. The atomization pump uses the liquid in the liquid storage cup 3191 to generate atomized liquid, and the atomized liquid flows into the heating and humidification adapter component 318 through the atomization interface 3194.

[0091] like Figure 22 As shown, the heating and humidification adapter assembly 318 includes a Y-type adapter tube 3181, the notch cover on the Y-type adapter tube 3181 is provided with an adapter cover 3182, the first inlet of the Y-type adapter tube 3181 is connected to the outlet of the internal breathing heating module 317 (i.e., the hot air connecting pipe 3171), the second inlet is connected to the outlet of the breathing atomization module 319 (i.e., the atomization interface 3194), and the outlet is connected to the breathing heating interface 303.

[0092] like Figure 16 As shown, the external breathing heating module 320 includes an external breathing heating tube 3201 , the end of the external breathing heating tube 3201 is connected to a mask connecting joint 3202 , and a breathing valve 3203 is provided on the mask connecting joint 3202 .

[0093] like Figure 28As shown, the external breathing heating module 320 also includes an external breathing heating circuit, which can be integrated in the second housing 301. The external breathing heating circuit includes: the base of the transistor Q5 is electrically connected to the second main control unit 315 through the resistor R23 and is also grounded through the resistor R24. The emitter of the transistor Q5 is grounded. The collector of the transistor Q5 is electrically connected to the gate of the field effect transistor Q6 through the resistor R25 and the diode D2, and is also electrically connected to the base of the transistor Q7 through the resistor R25. The base of the transistor Q7 is electrically connected to the collector of the transistor Q7 through the resistor R26. The electrode is connected to the voltage VOUT or the voltage VIN, the emitter is electrically connected to the gate of the field effect transistor Q6, the source of the field effect transistor Q6 is connected to the voltage VOUT or the voltage VIN, the drain of the field effect transistor Q6 is connected to -5V through the resistor R27, and is also electrically connected to the pin 1 of the heating interface PIPE_TEM, and is also electrically connected to the positive input terminal of the operational amplifier U3A through the diode D3, the pins 2 and 3 of the heating interface PIPE_TEM are grounded, the pin 4 is electrically connected to the second main control unit 315, the negative input terminal of the operational amplifier U3A is grounded through the resistor R28, and is also electrically connected to the positive input terminal of the operational amplifier U3A through the diode D3. Resistor R29 is electrically connected to the output end of op amp U3A, the output end of op amp U3A is electrically connected to the negative input end of op amp U3B through resistor R30, the upper control end of op amp U3A is connected to -5V and is also grounded through capacitor C15, the lower control end of op amp U3A is grounded through capacitor C16, the negative input end of op amp U3B is electrically connected to the output end of op amp U3B through resistor R31, and the positive input end is grounded through resistor R32, the output end of op amp U3B is electrically connected to the second main control unit 315 through resistor R33, and is also grounded through resistor R33 and capacitor C17 , and is also grounded through resistor R33 and diode D4. Pins 1 and 2 of the heating interface PIPE_TEM are connected to a first NTC thermistor with a longer line located in the external breathing heating tube and extending to the end. Pins 3 and 4 are connected to a second NTC thermistor with a shorter line located at the head end of the external breathing heating tube. The first NTC thermistor is used as both a temperature sensor and a heating resistance wire, and the second NTC thermistor is used as a temperature sensor. Among them, -5V can be obtained by converting DC5V into -5V by a small-power polarity reversal power converter.

[0094] The second main control unit 315 is used to send a high-level signal, the transistor Q5 is turned on, the transistor Q6 is turned on, the voltage on the left side of the diode D3 is higher than the voltage on the right side, the diode D3 is turned off, and the first NTC thermistor realizes the heating function; the second main control unit 315 is used to send a low-level signal, the transistor Q5 is not turned on, the transistor Q6 is cut off, the diode D3 is turned on, the second main control unit 315 obtains the resistance value of the first NTC thermistor, and calculates the temperature value of the end of the external breathing heating tube 3201 (near the breathing mask) by looking up the table, and detects the resistance value of the second NTC thermistor to calculate the temperature value of the head end of the external breathing heating tube 3201 (near the atomization component).

[0095] The working principle of the respiratory rewarming host is: when the hypothermia patient is breathing passively, the second main control unit 315 is used to control the fan drive circuit to drive the fan 3164 to start and generate negative pressure in the pipeline, and the breathing gas is inhaled through the air inlet pipe 3166 and the oxygen supply inlet 302, and is sent to the internal breathing heating module 317 for heating through the air outlet pipe 3167 and the air outlet connecting pipe 3168. After heating, the breathing gas enters the heating and humidification adapter component 318.

[0096] When a hypothermia patient breathes spontaneously, the second main control unit 315 is used to control the fan drive circuit not to drive the fan 3164 to start. The human body breathes spontaneously by inhaling external air through the air inlet pipe 3166 and the oxygen supply inlet 302, and directly sends the external air to the internal breathing heating module 317 for heating through the air outlet connecting pipe 3168. After heating, the breathing gas enters the heating and humidification adapter component 318.

[0097] At the same time, the second main control unit 315 is used to control the atomization drive circuit to drive the atomization pump to start. The atomization pump uses the liquid in the liquid storage cup 3191 to produce atomized liquid. The atomized liquid flows into the heating and humidification adapter component 318 through the atomization interface 3194. In the heating and humidification adapter component 318, the atomized liquid and the heated respiratory gas converge for humidification.

[0098] The second main control unit 315 is used to control the external breathing heating circuit to drive the NTC thermistor with a longer circuit (as a heating resistance wire) to reheat and keep the heated and humidified breathing gas entering the external breathing heating tube 3201 and send it to the breathing mask 321.

[0099] The second main control unit 315 is used to receive the temperature detected by the NTC thermistor with a longer circuit (as the terminal temperature sensor). If the temperature does not reach the second set temperature, it controls the internal breathing heating module 317 and the external breathing heating module 319 to heat until the temperature reaches the second set temperature.

[0100] This embodiment features a dual internal and external heating structure. Internal heating module 317 heats the respiratory gases. However, the gas outlet of internal heating module 317 is some distance from the respiratory opening, preventing the heated gases from directly entering the respiratory tract. Furthermore, some heat loss in the external respiratory circuit inevitably lowers the gas temperature. Therefore, external heating module 319 is provided for both heat preservation and further heating. Furthermore, a second temperature sensor 322 is located at the end of the external heating circuit to monitor and provide feedback on the gas temperature in real time for closed-loop control.

[0101] IV. Infusion rewarming host 400

[0102] like Figures 29-31As shown, the infusion rewarming host 400 includes a third shell 401, a support seat 402 is fixed to the lower part of one side of the third shell 401, and an optical axis fixing seat 403 is fixed to the upper part. The retractable infusion bracket 404 is composed of a fixed infusion pole and an adjustable infusion pole. The bottom of the fixed infusion pole is fixed to the support seat 402, and the upper part is passed through and fixed to the optical axis fixing seat 403. The top of the adjustable infusion pole is fixed with an infusion hook for hanging an infusion bag.

[0103] A heating fixing seat 405 is fixed to the other side of the third shell 401 , and a heating unit 406 is fixed to the heating fixing seat 405 . The heating unit 406 adopts a heating sheath, and a third temperature sensor 407 is provided at the end of the heating sheath.

[0104] The lower front portion of the third housing 401 is equipped with an infusion pump door 408 and infusion tube slots 409 located to the left and right of the infusion pump door 408. An infusion unit 410 is secured within the third housing 401, employing a semi-squeeze pump structure. The infusion tube of the infusion bag passes through the infusion pump door 408 and is secured to the infusion unit 410. It then passes through the warming unit 406 and is connected to the hypothermic patient within the insulated sleeping bag 100. A third temperature sensor 407 is located at the end of the warming unit 406. The specific structures of the warming unit 406 and infusion unit 410 are referenced in the invention patent application number CN 2022101051541, entitled "An Infusion Warming Device," previously designed by the present inventor.

[0105] A third main control unit 411 (using an MCU chip, model GD32F103C8T6) is fixed in the third shell 401. The third main control unit 411 is used to control the infusion unit 410 to deliver liquid, and control the heating unit 406 to heat the liquid, receive the temperature detected by the third temperature sensor 407, and control the heating unit 406 to heat until the temperature reaches the third set temperature if the temperature does not reach the third set temperature.

[0106] A third AC power interface 412 and a third DC power interface 413 are embedded in the third housing 401. A third power management unit 414, a third switching power supply 415, and a second battery 416 are fixed within the third housing 401. The third power management unit 414 includes a third AC / DC path management circuit, a second one-touch switch circuit, a second power management module, and a third voltage conversion circuit. The third power management unit supplies power to the infusion rewarming host. The structure of the third AC power interface 412 is the same as that of the first AC power interface, the structure of the third DC power interface 413 is the same as that of the first DC power interface, the specific circuit structure of the third AC / DC path management circuit is the same as that of the second AC / DC path management circuit, the specific circuit structure of the second one-touch switch circuit is the same as that of the first one-touch switch circuit, the specific circuit structure of the second power management module is the same as that of the first power management module, and the specific circuit structure of the third voltage conversion circuit is the same as that of the second voltage conversion circuit.

[0107] The third AC power interface 412, the third switching power supply 415, the third AC / DC path management circuit and the third voltage conversion circuit are electrically connected in sequence to form a third AC power supply circuit, the third DC power interface 413, the third AC / DC path management circuit and the third voltage conversion circuit are electrically connected in sequence to form a third DC power supply circuit, the second one-key switch circuit and the third main control unit 411 are electrically connected, the second battery 416, the second one-key switch circuit and the third voltage conversion circuit are electrically connected in sequence to form a second battery power supply circuit, and the third AC / DC path management circuit and the second battery 416 are both electrically connected to the second power management module.

[0108] A third control panel 417 and a third switch 418 are embedded in the front of the third housing 401 .

[0109] When only the second battery 416 is powered and the third AC power interface 412 is connected to AC power to realize AC power supply, or when the second battery 416 is powered, the third AC power interface 412 is connected to AC power to realize AC power supply, and the third DC power interface 413 is connected to DC to realize DC power supply, the third switching power supply 415 is used to convert AC power into a first DC power VIN, the third AC / DC path management circuit is used to select to transmit the first DC power VIN to the third voltage conversion circuit, and the third voltage conversion circuit is used to convert the first DC power VIN into a target DC power.

[0110] When only the second battery 416 is powered and the third DC power interface 413 is connected to DC power to realize DC power supply, the third AC / DC path management circuit is used to select and transmit the DC power VIN to the third voltage conversion circuit, and the third voltage conversion circuit is used to convert the DC power VIN into the target DC power.

[0111] The second one-touch switch circuit is used to output the power supply voltage VOUT to the third voltage conversion circuit using the second battery 416 after receiving the power-on signal from the third switch 418. The third voltage conversion circuit is used to convert the power supply voltage VOUT to the target DC power. When only the second battery is providing power, the third voltage conversion circuit is used to convert the power supply voltage VOUT to the target DC power.

[0112] The second power management module is used to collect the first DC power VIN or DC power VIN output by the third AC / DC path management circuit and the voltage of the second battery, and control the first DC power VIN or DC power VIN to charge the second battery when the first DC power VIN or DC power VIN is greater than a certain set threshold of the battery voltage.

[0113] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of the present invention.

Claims

1. A rewarming system for treating hypothermia, comprising: A thermal insulation sleeping bag, comprising a sleeping bag body, an air supply pipe and an air return pipe inserted into the sleeping bag body, and a first temperature sensor disposed inside the sleeping bag body; A ventilation and rewarming host comprises a first shell, on which an air inlet connected to the return air duct and an air outlet connected to the supply air duct are provided, a first main control unit, an air dynamic device and a gas heating unit are fixed in the first shell, the air inlet is connected to the air dynamic device through an air inlet duct, the air dynamic device is connected to the inlet of the gas heating unit through an air outlet connecting sleeve, and the outlet of the gas heating unit is connected to the air outlet through an air guide adapter assembly, the first main control unit is used to control the air dynamic device to extract air from the heat-insulating sleeping bag through the return air duct, the air inlet and the air inlet duct, and send the air into the gas heating unit through the air outlet connecting sleeve for heating, the heated air is sent to the heat-insulating sleeping bag through the air guide adapter assembly, the air outlet and the supply air duct in turn for ventilation and reheating, the temperature inside the heat-insulating sleeping bag detected by the first temperature sensor is received, and if the temperature does not reach the first set temperature, the gas heating unit is controlled to heat until the temperature reaches the first set temperature; A respiratory rewarming host comprises a second shell, an oxygen supply inlet and a respiratory heating interface are arranged on the second shell, a second main control unit, a respiratory ventilation module, an internal respiratory heating module, a heating and humidification adapter component and a respiratory atomization module are fixed in the second shell, an external respiratory heating module and a respiratory mask are arranged outside the second shell, a second temperature sensor is arranged at the end of the external respiratory heating module, the oxygen supply inlet, the respiratory ventilation module and the internal respiratory heating module are connected in sequence, the outlet of the internal respiratory heating module and the outlet of the respiratory atomization module are connected to the first inlet and the second inlet of the heating and humidification adapter component respectively, and the outlet of the heating and humidification adapter component is connected to the respiratory heating interface and the external The breathing heating module is connected to the breathing mask, and the second main control unit is used to control the breathing ventilation module to extract breathing gas through the oxygen supply inlet and send it to the internal breathing heating module for heating. The heated breathing gas enters the heating and humidification adapter assembly, and at the same time controls the breathing atomization module to generate atomized liquid and enter the heating and humidification adapter assembly. The atomized liquid humidifies the heated breathing gas in the heating and humidification adapter assembly, controls the external breathing heating module to reheat and keep the heated and humidified breathing gas warm and send it to the breathing mask, receives the temperature detected by the second temperature sensor, and controls the internal and external breathing heating modules to heat until the temperature reaches the second set temperature if the temperature does not reach the second set temperature; An infusion rewarming host includes a third shell, on which an infusion bracket and a heating unit for hanging an infusion bag are provided, a third main control unit and an infusion unit are fixed in the third shell, an infusion tube of the infusion bag is clamped in the infusion unit and passed through the heating unit before being connected to a human body in a thermal sleeping bag, a third temperature sensor is provided at the end of the heating unit, the third main control unit is used to control the infusion unit to deliver liquid, and control the heating unit to heat the liquid, receive the temperature detected by the third temperature sensor, and control the heating unit to heat until the temperature reaches the third set temperature if the temperature does not reach the third set temperature.

2. The rewarming system for treating human hypothermia according to claim 1, characterized in that: A first power interface is embedded in the first housing, the first power interface including a first AC power interface and a first DC power interface. A first power management unit and a first switching power supply are fixed in the first housing. The first power management unit includes a first AC / DC path management circuit and a first voltage conversion circuit. The first power interface and the first power management unit are electrically connected to supply power to the ventilation and rewarming host and the thermal sleeping bag. The first AC power interface, the first switching power supply, the first AC / DC path management circuit, and the first voltage conversion circuit are electrically connected in sequence to form a first AC power supply circuit; the first DC power interface, the first AC / DC path management circuit, and the first voltage conversion circuit are electrically connected in sequence to form a first DC power supply circuit; Only when the first AC power interface is connected to AC power or when the first AC power interface is connected to AC power and the first DC power interface is connected to DC power, the first switching power supply is used to convert the AC power into a first DC power, the first AC / DC path management circuit is used to select and transmit the first DC power to the first voltage conversion circuit, and the first voltage conversion circuit is used to convert the first DC power into a target DC power; Only when the first DC power interface is connected to DC power, the first AC / DC path management circuit is used to select and transmit the DC power to the first voltage conversion circuit, and the first voltage conversion circuit is used to convert the DC power into target DC power.

3. The rewarming system for treating human hypothermia according to claim 1, characterized in that: A second power interface is embedded in the second shell, and the second power interface includes a second AC power interface and a second DC power interface. A second power management unit, a second switching power supply and a first battery are fixed in the second shell. The second power management unit includes a second AC / DC path management circuit, a first one-button switch circuit, a first power management module and a second voltage conversion circuit. The second power interface and the second power management unit are electrically connected to power the respiratory rewarming host; The second AC power interface, the second switching power supply, the second AC / DC path management circuit, and the second voltage conversion circuit are electrically connected in sequence to form a second AC power supply circuit, the second DC power interface, the second AC / DC path management circuit, and the second voltage conversion circuit are electrically connected in sequence to form a second DC power supply circuit, the first one-touch switch circuit is electrically connected to the second main control unit, the first battery, the first one-touch switch circuit, and the second voltage conversion circuit are electrically connected in sequence to form a first battery power supply circuit, and the second AC / DC path management circuit and the first battery are both electrically connected to the first power management module; When only the first battery is powered and the second AC power interface is connected to AC power to achieve AC power supply, or when the first battery is powered and the second AC power interface is connected to AC power to achieve AC power supply, and the second DC power interface is connected to DC power to achieve DC power supply, the second switching power supply is used to convert the AC power into a first DC power VIN, the second AC / DC path management circuit is used to select and transmit the first DC power VIN to the second voltage conversion circuit, and the second voltage conversion circuit is used to convert the first DC power VIN into a target DC power; When only the first battery is powered and the second DC power interface is connected to DC power to realize DC power supply, the second AC / DC path management circuit is used to select and transmit the DC power VIN to the second voltage conversion circuit, and the second voltage conversion circuit is used to convert the DC power VIN into the target DC power; The first one-key switch circuit is used to output the power supply voltage VOUT to the second voltage conversion circuit using the first battery after receiving the power-on signal, and the second voltage conversion circuit is used to convert the power supply voltage VOUT into the target direct current; When only the first battery supplies power, the second voltage conversion circuit is used to convert the supply voltage VOUT into a target direct current; The first power management module is used to collect the first DC power VIN or DC power VIN output by the second AC / DC path management circuit and the voltage of the first battery, and control the first DC power VIN or DC power VIN to charge the first battery when the first DC power VIN or DC power VIN is greater than a certain set threshold of the battery voltage.

4. The rewarming system for treating human hypothermia according to claim 1, wherein: A third power interface is embedded in the third housing, and the third power interface includes a third AC power interface and a third DC power interface. A third power management unit, a third switching power supply, and a second battery are fixed in the third housing. The third power management unit includes a third AC / DC path management circuit, a second one-key switch circuit, a second power management module, and a third voltage conversion circuit. The third power interface and the third power management unit are electrically connected to supply power to the infusion rewarming host. The third AC power interface, the third switching power supply, the third AC / DC path management circuit, and the third voltage conversion circuit are electrically connected in sequence to form a third AC power supply circuit; the third DC power interface, the third AC / DC path management circuit, and the third voltage conversion circuit are electrically connected in sequence to form a third DC power supply circuit; the second one-touch switch circuit is electrically connected to the third main control unit; the second battery, the second one-touch switch circuit, and the third voltage conversion circuit are electrically connected in sequence to form a second battery power supply circuit; and the third AC / DC path management circuit and the second battery are both electrically connected to the second power management module; When only the second battery and the third AC power interface are connected to AC power to realize AC power supply, or when the second battery and the third AC power interface are connected to AC power to realize AC power supply, and the third DC power interface is connected to DC power to realize DC power supply, the third switching power supply is used to convert the AC power into a first DC power VIN, the third AC / DC path management circuit is used to select and transmit the first DC power VIN to the third voltage conversion circuit, and the third voltage conversion circuit is used to convert the first DC power VIN into a target DC power. When only the second battery and the third DC power interface are connected to DC power to realize DC power supply, the third AC / DC path management circuit is used to select and transmit the DC power VIN to the third voltage conversion circuit, and the third voltage conversion circuit is used to convert the DC power VIN into the target DC power; The second one-key switch circuit is used to output the power supply voltage VOUT to the third voltage conversion circuit using the second battery after receiving the power-on signal, and the third voltage conversion circuit is used to convert the power supply voltage VOUT into the target direct current; When only the second battery supplies power, the third voltage conversion circuit is used to convert the supply voltage VOUT into a target direct current; The second power management module is used to collect the first DC power VIN or DC power VIN output by the third AC / DC path management circuit and the voltage of the second battery, and control the first DC power VIN or DC power VIN to charge the second battery when the first DC power VIN or DC power VIN is greater than a certain set threshold of the battery voltage.

5. The rewarming system for treating human hypothermia according to claim 1, wherein: The gas heating unit includes multiple first heating tubes arranged side by side, which are connected in sequence. The inlet of the first first heating tube is connected to the air outlet connecting sleeve, and the outlet of the last first heating tube is connected to the air guide adapter assembly. Each first heating tube is provided with a PTC heating plate, and the inner wall of each first heating tube has a U-shaped corrugated structure.

6. The rewarming system for treating human hypothermia according to claim 1, wherein: The air guide adapter assembly includes an air guide adapter frame with a triangular cross-section fixed inside the first shell, the air guide adapter frame cover is provided with an air guide adapter cover, the top of the side of the air guide adapter frame is provided with an air guide adapter interface connected to the outlet of the gas heating unit, and an arc-shaped air guide plate is fixed to the upper part of the air guide adapter frame to guide the air entering the air guide adapter interface, and the lower part of the inner cavity of the air guide adapter frame is connected to the air outlet.

7. The rewarming system for treating human hypothermia according to claim 1, characterized in that: The top of the side of the air inlet duct is fixedly connected to the air inlet, and an arc-shaped air guide plate is fixed on the upper part of the air inlet duct to guide the air entering the air inlet, and the lower part of the air inlet duct is connected to the inlet of the aerodynamic device.

8. The rewarming system for treating human hypothermia according to claim 3, wherein: The respiratory ventilation module, heating and humidification adapter assembly and respiratory nebulization module are arranged from bottom to top on the same side. The respiratory ventilation module is set close to the oxygen supply inlet, the respiratory nebulization module is set close to the respiratory heating interface, and the second power management unit, the second main control unit and the internal respiratory heating module are arranged front to back on the other side.

9. The rewarming system for treating human hypothermia according to claim 1, wherein: The respiratory ventilation module includes a fan PCB board and a respiratory ventilation component. The fan PCB board is provided with a fan drive circuit; The breathing ventilation assembly includes a fan base fixed in the second shell, a fan fixing sleeve is fixed on the fan base, a fan is fixed on the fan fixing sleeve, the inlet of the fan is connected to one end of the air inlet pipe through the air inlet rubber member, the other end of the air inlet pipe is connected to the oxygen supply inlet, the outlet of the fan is connected to one end of the air outlet pipe, the other end of the air outlet pipe is connected to the internal breathing heating module through the air outlet connecting pipe, a one-way valve is provided in the air outlet connecting pipe near the air outlet pipe, the air outlet connecting pipe is also connected to the air inlet pipe, the air outlet connecting pipe is connected to a sampling pipe, and a pressure sensor is provided in the sampling pipe; The fan drive circuit includes: the base of the transistor Q3 is electrically connected to the second main control unit through the resistor R21 and is also grounded through the resistor R22, the emitter of the transistor Q3 is grounded, the collector of the transistor Q3 is electrically connected to the gate of the field effect transistor Q4 through the resistor R20, the gate of the field effect transistor Q4 is electrically connected to the source of the field effect transistor Q4 through the resistor R19, the source of the field effect transistor Q4 is connected to DC5V, the drain of the field effect transistor Q4 is electrically connected to the pin 2 of the fan interface through the inductor DR4, the two ends of the inductor DR4 are respectively grounded through the capacitor C12 and the capacitor C13, the pin 1 of the fan interface is grounded and electrically connected to the second main control unit, the pin 3 of the fan interface is electrically connected to the second main control unit through the resistor R18, is also grounded through the resistor R18 and the capacitor C14, and is also electrically connected to the second main control unit through the resistor R17, and the fan interface is connected to the fan; When the human body is breathing passively, the second main control unit is used to control the fan drive circuit to drive the fan to start and generate negative pressure in the pipeline, inhale the breathing gas through the air inlet pipe and the oxygen supply inlet, and send it to the internal breathing heating module for heating through the air outlet pipe and the air outlet connecting pipe, and control the fan drive circuit to adjust the fan power according to the pressure value detected by the pressure sensor, so that the pressure value reaches the target pressure value; When the human body breathes spontaneously, the second main control unit is used to control the fan drive circuit not to drive the fan to start. The human body breathes spontaneously to inhale external air through the air inlet pipe and the oxygen supply inlet, and directly sends it to the internal breathing heating module for heating through the air outlet connecting pipe.

10. The rewarming system for treating human hypothermia according to claim 1, wherein: The internal breathing heating module includes multiple second heating tubes arranged side by side, adjacent second heating tubes are connected, the inlet of the first second heating tube is connected to the air outlet connecting pipe, and the outlet of the last second heating tube is connected to the first inlet of the heating and humidification adapter assembly through the hot air connecting pipe. Each second heating tube is provided with a PTC heating plate, and the inner wall of each second heating tube has a U-shaped corrugated structure.

11. The rewarming system for treating hypothermia according to claim 1, wherein: The breathing atomization module includes an atomization PCB board and an atomization component. The atomization PCB board is provided with an atomization drive circuit; The atomization assembly includes a liquid storage cup fixed in the second housing, the top cover of the liquid storage cup is provided with a liquid storage cup cover, the bottom of the liquid storage cup is provided with a communicating inclined cavity, an atomization pump is fixed in the inclined cavity, the outlet of the inclined cavity is sealed with an atomization interface through a silicone ring, and the atomization interface is connected to the second inlet of the heating and humidification adapter assembly; The atomization drive circuit includes: the base of the transistor Q8 is electrically connected to the second main control unit through the resistor R43 and is also grounded through the resistor R44, the emitter of the transistor Q8 is grounded, the collector of the transistor Q8 is electrically connected to the gate of the field effect transistor Q9 through the resistor R45, the gate of the field effect transistor Q9 is electrically connected to the source of the field effect transistor Q9 through the resistor R46, the source of the field effect transistor Q9 is connected to DC5V, the drain of the field effect transistor Q9 is electrically connected to the pin 2 of the humidification interface JSQ and is also grounded through the capacitor C28, the pin 1 of the humidification interface JSQ is grounded, and the humidification interface JSQ is connected to the atomization pump; The second main control unit is used to control the atomization drive circuit to drive the atomization pump to start. The atomization pump uses the liquid in the liquid storage cup to generate atomized liquid, and the atomized liquid flows into the heating and humidification adapter assembly through the atomization interface.

12. The rewarming system for treating human hypothermia according to claim 1, wherein: The heating and humidification adapter assembly includes a Y-shaped adapter tube. The notch cover on the Y-shaped adapter tube is provided with an adapter cover. The first inlet of the Y-shaped adapter tube is connected to the outlet of the internal breathing heating module, the second inlet is connected to the outlet of the breathing atomization module, and the outlet is connected to the breathing heating interface.

13. The rewarming system for treating human hypothermia according to claim 1, wherein: The external breathing heating module includes an external breathing heating pipe; The external breathing heating module also includes an external breathing heating circuit, which includes: the base of the transistor Q5 is electrically connected to the second main control unit through the resistor R23, and is also grounded through the resistor R24, the emitter of the transistor Q5 is grounded, the collector of the transistor Q5 is electrically connected to the gate of the field effect transistor Q6 through the resistor R25 and the diode D2, and is also electrically connected to the base of the transistor Q7 through the resistor R25, the base of the transistor Q7 is electrically connected to the collector of the transistor Q7 through the resistor R26, and the collector is connected to the voltage VOUT or the voltage VIN , the emitter is electrically connected to the gate of the field effect tube Q6, the source of the field effect tube Q6 is connected to the voltage VOUT or the voltage VIN, the drain of the field effect tube Q6 is connected to -5V through the resistor R27, and is also electrically connected to the pin 1 of the heating interface PIPE_TEM, and is also electrically connected to the positive input terminal of the operational amplifier U3A through the diode D3, the pins 2 and 3 of the heating interface PIPE_TEM are grounded, the pin 4 is electrically connected to the second main control unit, the negative input terminal of the operational amplifier U3A is grounded through the resistor R28, and is also electrically connected to the positive input terminal of the operational amplifier U3A through the resistor R29. The output end is electrically connected, the output end of the operational amplifier U3A is electrically connected to the negative input end of the operational amplifier U3B through the resistor R30, the upper control end of the operational amplifier U3A is connected to -5V and is also grounded through the capacitor C15, the lower control end of the operational amplifier U3A is grounded through the capacitor C16, the negative input end of the operational amplifier U3B is electrically connected to the output end of the operational amplifier U3B through the resistor R31, and the positive input end is grounded through the resistor R32, the output end of the operational amplifier U3B is electrically connected to the second main control unit through the resistor R33, and is also grounded through the resistor R33 and the capacitor C17, and is also grounded through the resistor R 33 and diode D4 are grounded, and pins 1 and 2 of the heating interface PIPE_TEM are connected to a first NTC thermistor with a longer circuit extending to the end of the external breathing heating tube, and pins 3 and 4 are connected to a second NTC thermistor with a shorter circuit located at the head end of the external breathing heating tube. The first NTC thermistor serves as both a temperature sensor and a heating resistor, and the second NTC thermistor serves as a temperature sensor. Among them, -5V is obtained by converting DC5V to -5V using a low-power polarity reversal power converter. The second main control unit is used to send a high-level signal, the transistor Q5 is turned on, the transistor Q6 is turned on, the voltage on the left side of the diode D3 is higher than the voltage on the right side, the diode D3 is turned off, and the first NTC thermistor realizes the heating function; the second main control unit is used to send a low-level signal, the transistor Q5 is not turned on, the transistor Q6 is cut off, the diode D3 is turned on, the second main control unit obtains the resistance value of the first NTC thermistor, calculates the temperature value of the end of the external breathing heating tube by looking up the table, and detects the resistance value of the second NTC thermistor to calculate the temperature value of the head end of the external breathing heating tube.

14. The rewarming system for treating hypothermia according to claim 1, wherein: A support base is fixed to the lower portion of one side of the third housing, and an optical axis fixing base is fixed to the upper portion. The infusion stand is a retractable infusion stand, which is composed of a fixed infusion pole and an adjustable infusion pole. The bottom of the fixed infusion pole is fixed to the support base, and the upper portion is passed through and fixed to the optical axis fixing base. The top of the adjustable infusion pole is fixed with an infusion hook for hanging an infusion bag. A heating fixing seat is fixed on the other side of the third shell, and a heating unit is fixed on the heating fixing seat. The heating unit adopts a heating sheath, and a third temperature sensor is set at the end of the heating sheath; An infusion pump door and infusion tube grooves on the left and right sides of the infusion pump door are provided at the lower front portion of the third shell. An infusion unit is fixed inside the third shell, and the infusion unit adopts a semi-extrusion pump structure.

15. The rewarming system for treating human hypothermia according to claim 1, wherein: The inner end of the air supply pipe is connected to an air supply connecting pipe placed in the sleeping bag body and arranged along the length direction of the sleeping bag body. The two sides of the air supply connecting pipe are respectively connected to at least four air supply branches placed in the sleeping bag body and arranged along the width direction of the sleeping bag body. The four air supply branches on each side are respectively located above the chest, abdomen, thigh and calf positions of the human body in the sleeping bag body. Zipper-type infusion disposal ports for the infusion tube to pass through are opened on opposite sides of the sleeping bag body.

16. The rewarming system for treating human hypothermia according to claim 15, wherein: An air supply protective cover and a return air protective cover are inserted and fixed on the sleeping bag body, the air supply pipe is passed through the air supply protective cover and fixed, the return air pipe is passed through the return air protective cover and fixed, the outer end of the air supply pipe is funnel-shaped, the air supply connecting pipe is arranged along the central axis of the length direction of the sleeping bag body, and the four air supply branch pipes on one side are symmetrically arranged with the four air supply branch pipes on the other side.

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