Plateau cold region field first-aid infusion device

Abstract

In order to solve the problem that bubbles are generated due to low pressure and shaking of an infusion bag in the advancing process in the plateau cold region, the field first-aid infusion device in the plateau cold region comprises a fixed shell, an infusion shell arranged in the fixed shell, a buffer pressurizing assembly and a pressure adjusting assembly arranged between the inner wall of the fixed shell and the inner wall of the infusion shell, the infusion tube is composed of a fixed tube and a sliding tube slidably connected to the interior of the fixed tube, the interior of the fixed tube is communicated with the interior of the sliding tube to form a closed cavity, and a first air inlet communicated with the interior of the infusion shell is formed in the side wall of the end, close to the infusion shell, of the fixed tube and provided with an air inlet one-way valve; according to the device, buffering and pressurizing operation is synchronously conducted on the infusion shell through the buffering and pressurizing assembly, the pressurizing degree can be adjusted in a self-adaptive mode along with the shaking amplitude, bubbles are effectively restrained from being generated, and infusion safety in the advancing process is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of municipal slope anchor rods, and in particular to a field emergency infusion device in plateau cold regions. Background Art

[0002] The high altitude cold environment poses severe challenges to medical equipment, especially infusion devices. The main problems caused by low air pressure in the plateau include:

[0003] 1) Increased bubble formation: In a low-pressure environment, the gas dissolved in the liquid is more likely to precipitate and form bubbles, which also increases the risk of gas embolism and endangers patient safety;

[0004] 2) Abnormal infusion speed. Low air pressure will affect the speed of gravity infusion, which may cause the infusion speed to be too fast or unstable;

[0005] 3) The boiling point of the liquid is reduced. The low air pressure in high altitude areas will reduce the boiling point of the liquid and affect the stability of some drugs;

[0006] 4) Deformation of infusion bags / bottles. Sealed infusion containers may expand and deform in a low-pressure environment.

[0007] When performing infusion in plateau areas, especially when performing infusion while moving, the infusion bag is vibrated. This mechanical action may accelerate the precipitation of dissolved gases. Therefore, bubbles are easily generated in the two situations where the air pressure in plateau areas is low and the infusion device shakes during movement. For the bubble problem, the prior art generally uses a microporous filter or other filtering device to capture tiny bubbles. However, this method is not only complex in structure, but also increases system resistance and affects the infusion speed.

[0008] In addition, in the low temperature environment of the plateau, too low an ambient temperature will cause changes in the physical properties of the infusion liquid, such as increased viscosity and density, which will affect the infusion speed. Some solutions may crystallize at low temperatures, and the lower environment will affect the stability of drugs. Moreover, although low temperatures usually inhibit the formation of bubbles, when the cold liquid is reheated, it may release supersaturated dissolved gases and form bubbles. Therefore, the infusion liquid needs to maintain a relatively reasonable temperature. However, in the prior art, portable heaters are generally used to heat the infusion bag. It is difficult to maintain the ideal temperature for a long time in the field, and the portable heaters rely on batteries, so the continuity of the infusion cannot be guaranteed. Summary of the invention

[0009] In order to solve the technical problems such as bubbles easily generated in the infusion bag due to low pressure in the cold plateau area and bubbles generated due to shaking of the infusion bag during travel, the present invention provides a field emergency infusion device in the cold plateau area, and the technical solution adopted is as follows:

[0010] A high-altitude cold region field emergency infusion device comprises a fixed housing and an infusion housing arranged inside the fixed housing, wherein:

[0011] A fixed shell, which is a rigid member and has a first cavity disposed therein;

[0012] The infusion housing is a rigid part, which is arranged inside the first cavity, and the upper and lower ends of the infusion housing are respectively connected with a liquid inlet pipe and a liquid outlet pipe extending to the outside of the fixed housing;

[0013] A buffer pressurizing assembly, the buffer pressurizing assembly is arranged between the inner wall of the fixed housing and the inner wall of the infusion housing, and is composed of a fixed tube and a sliding tube slidably connected to the inside of the fixed tube, one end of the fixed tube is fixed to the outer wall of the infusion housing and communicates with the inside of the infusion housing, and the other end is communicated with the sliding tube, one end of the sliding tube away from the fixed tube is connected to the inner wall of the fixed housing, and the inside of the fixed tube is communicated with the inside of the sliding tube to form a closed cavity, and a first air inlet hole communicating with the inside of the infusion housing is provided on the side wall of the fixed tube close to one end of the infusion housing;

[0014] and an air intake check valve, disposed in the first air intake hole, for controlling the gas flow direction from the outside of the fixed tube to the inside;

[0015] The exhaust one-way valve is arranged between the fixed tube and the side wall of the infusion housing, and is used to control the gas flow direction from the inside of the fixed tube to the inside of the infusion housing.

[0016] Furthermore, the buffer pressurizing components are symmetrically arranged in pairs along the circumferential direction of the outer side of the infusion housing.

[0017] Furthermore, an air flow channel is provided inside the side wall of the infusion housing, one end of the air flow channel is connected to the interior of the fixed tube through an exhaust one-way valve, and the other end extends along the inside of the side wall of the infusion housing and is connected to the upper inner part of the infusion housing through a second air inlet hole, and the second air inlet hole is located at the upper end of the infusion housing.

[0018] Furthermore, the buffer pressurizing assembly also includes a buffer spring, and both ends of the buffer spring in the length direction are fixedly connected to the sliding tube and the fixed tube respectively.

[0019] Furthermore, the outer surface of the infusion housing is covered with a heat-insulating layer.

[0020] Furthermore, the thermal insulation layer is a phase change material thermal insulation layer, and the infusion housing is made of a heat conductive material.

[0021] Furthermore, an air intake pipe is arranged on the fixed shell, and a filter screen is arranged inside the air intake pipe.

[0022] Furthermore, a heat exchange component is provided on the fixed shell, and the air inlet pipe and the liquid inlet pipe both pass through the interior of the heat exchange component and are in contact with the heat exchange medium inside the heat exchange component.

[0023] Furthermore, a flow regulator is provided at one end of the liquid outlet pipe extending out of the fixed shell.

[0024] Furthermore, the infusion housing is also connected to an exhaust pipe, one end of which is connected to the upper inner portion of the infusion housing, and the other end of which extends to the outside of the fixed housing, and an automatic exhaust valve is provided on the exhaust pipe.

[0025] The beneficial effects of the present invention are:

[0026] 1. According to Henry's law, the amount of gas dissolved in a liquid is proportional to the partial pressure of the gas above it. In a low-pressure environment, the gas dissolved in the liquid will be more likely to precipitate and form bubbles. Therefore, the higher the air pressure above the liquid, the greater the amount of gas dissolved, and the less likely it is to generate bubbles. The device can provide a certain degree of buffering to the infusion housing inside the fixed housing by setting a buffer pressurizing component between the fixed housing and the infusion housing, thereby reducing the shaking amplitude and thus reducing the bubbles generated by the shaking. In addition, during the shaking process, the buffer pressurizing component is used to inflate and pressurize the upper part of the infusion housing. During the buffering process, the buffer pressurizing component simultaneously realizes the pressurization operation of the inside of the infusion housing, so as to avoid the problem of bubbles in the liquid caused by the dual factors of shaking and low-pressure environment, which affects the infusion speed and infusion accuracy, and effectively improves the safety during the infusion process.

[0027] 2. The buffer pressurizing component is composed of a fixed tube and a sliding tube slidably connected to the inside of the fixed tube, and the fixed tube is provided with a first air inlet hole with an air inlet check valve. During the shaking process, the infusion housing can drive the sliding tube to slide in the length direction inside the fixed tube so that the interval of the buffer pressurizing component is extended and shortened. During the extension process of the buffer pressurizing component, the pressure in the closed cavity formed between the sliding tube and the fixed tube is reduced because the internal sealing of the overall structure and the volume increase. The external gas enters the fixed tube through the air inlet pipe and the first air inlet hole. As the buffer pressurizing component is shortened, the gas in the closed cavity is compressed and enters the upper part of the infusion housing through the exhaust check valve, the gas flow channel and the second air inlet hole in sequence, thereby pressurizing the inside of the infusion housing to suppress the generation of bubbles during the shaking process of the liquid;

[0028] 3. When the infusion housing shakes more, the probability of generating bubbles and the number of bubbles will increase. At this time, the length change of the buffer pressurizing component will also increase with the increase of the shaking amplitude. When the length change of the buffer pressurizing component is larger, the amount of gas inflated into the infusion component will increase, and the pressure in the upper part of the infusion housing will increase. Therefore, the buffer pressurizing component can adapt to the strength of the shaking amplitude to further suppress the formation of bubbles and effectively improve the safety of infusion.

[0029] 4. An exhaust pipe is provided on the infusion housing, and an automatic exhaust valve is provided on the exhaust pipe. By presetting the pressure threshold, the internal pressure of the infusion housing is ensured to be within a safe range. In addition, a flow regulator is provided on the outlet pipe to adjust the infusion speed, so as to avoid the problem of excessive pressure causing excessive flow rate during violent shaking;

[0030] 5. An air intake check valve is arranged on the fixed tube, so that when the length of the buffer pressurization component is shortened and the infusion housing is inflated, the gas can be prevented from being discharged through the first air intake hole. An exhaust check valve is arranged between the fixed tube and the infusion housing, so that when the length of the buffer pressurization component is extended, the gas inside the infusion housing is prevented from being drawn into the fixed tube through the air flow channel due to the decrease in the air pressure in the fixed tube. The arrangement of the air intake check valve and the exhaust check valve enables the buffer pressurization component to effectively perform a pressurization operation inside the infusion housing when the infusion housing is shaken;

[0031] 6. Use a phase change material insulation layer to control the temperature of the infusion shell and the internal infusion liquid to ensure that the infusion liquid is kept within a reasonable range. The insulation time can be from several hours to more than ten hours, reducing dependence on external heat sources;

[0032] 7. The setting of the heat exchange component can pre-exchange the heat of the gas entering the infusion housing. Through reasonable temperature setting, the gas entering the infusion housing can be kept at a reasonable temperature, avoiding the problem of excessive external cold gas entering the infusion housing during shaking, causing the infusion liquid temperature to be too low, and after the shaking is over, the infusion liquid temperature rises, causing gas precipitation to form bubbles. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 Schematic diagram of the structure of the present invention

[0034] Figure 2 for Figure 1 Enlarged diagram of the middle A part

[0035] Figure 3 Schematic diagram of the infusion housing structure

[0036] Figure 4 Schematic diagram of the buffer pressurization device structure

[0037] Figure 5Schematic diagram of gas flow direction when the infusion housing is moving to the left during the left-right shaking process

[0038] Wherein: 1-fixed housing, 101-horizontal slide, 102-longitudinal slide;

[0039] 2-infusion housing, 201-liquid inlet, 202-liquid outlet, 203-exhaust port, 204-valve hole, 205-air flow channel, 206-second air inlet, 207-third air inlet;

[0040] 3-buffer pressurizing assembly, 301-fixed pipe, 302-sliding pipe, 303-connecting plate, 304-first air inlet hole, 305-intake check valve, 306-exhaust check valve, 307-buffer spring, 308-sealing ring;

[0041] 4-Phase change material insulation layer;

[0042] 5-intake pipe, 501-filter;

[0043] 6-liquid inlet pipe;

[0044] 7-liquid outlet pipe, 701-flow regulator;

[0045] 8-exhaust pipe, 801-exhaust valve;

[0046] 9- heat exchange component;

[0047] 10-Fix the components. DETAILED DESCRIPTION

[0048] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0049] In the description of the invention, it is necessary to understand that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the invention.

[0050] like Figure 1-Figure 5The illustrated device is a high-altitude cold region field emergency infusion device, comprising a fixed shell 1, an infusion shell 2, and a buffer pressurizing assembly 3. The buffer pressurizing assembly 3 is connected between the inner wall of the fixed shell 1 and the outer wall of the infusion shell 2, and is used to buffer the relative movement between the two and to input gas into the upper end of the infusion shell 2.

[0051] Specifically, the fixed housing 1 is as follows Figure 1 As shown, the whole is a rigid part with a rectangular shell structure, and a first cavity for accommodating an infusion shell 2 and a buffer pressurizing component 3 is arranged inside. An air inlet pipe 5 is connected above the fixed shell 1, and the air inlet pipe 5 is used to connect the outside and the first cavity. A filter screen 501 is also arranged on the air inlet pipe 5. A fixed component 10 is also fixedly connected to the right side of the fixed shell 1. The fixed shell 1 is fixed to an infusion stand or other devices in the external environment through the arranged fixed component 10.

[0052] like Figure 1 , Figure 2 as well as Figure 3 As shown, the infusion housing 2 as a whole is also a rectangular rigid housing structure, and a liquid inlet 201 and a liquid outlet 202 are respectively provided at the upper and lower ends of the infusion housing 2, and a liquid inlet pipe 6 and a liquid outlet pipe 7 are respectively provided in the liquid inlet 201 and the liquid outlet 202, and one end of the liquid inlet pipe 6 extends upward to the top of the fixed housing 1 and extends out a certain length, and the infusion liquid is easily replenished into the infusion housing 2 through the liquid inlet pipe 6. In order to facilitate operation and ensure that the infusion housing 2 is not connected to the external environment during use, a switch valve can be provided at one end of the outer side of the liquid inlet pipe 6, and the liquid outlet pipe 7 extends downward to a certain length below the fixed housing 1 and the liquid outlet pipe 7 extends out from below the fixed housing 1 A flow regulator 701 is provided on one end, and the outlet pipe 7 and the flow regulator 701 are provided to facilitate infusion operation and adjust the infusion speed, thereby avoiding the problem of too fast infusion flow rate caused by excessive pressurization; a group of valve holes 204 are provided in the middle of the upper, lower, left and right side plates of the infusion housing 2, and a second air inlet hole 206 is provided at the upper end of the infusion housing 2. The second air inlet hole 206 is located on the inner wall of the upper cover plate of the infusion housing 2, and an air flow channel 205 is provided inside the side wall of the infusion housing 2. Each group of valve holes 204 is connected to the second air inlet hole 206 through the air flow channel 205, and then communicated with the upper inner part of the infusion housing 2.

[0053] The air flow channel 205 can be designed as an integrated unit. Figure 3 As shown, the air flow channels 205 on the upper, lower, left and right side panels are all connected, and can also be set separately, that is, each group of valve holes 204 corresponds to an air flow channel 205, and each group of air flow channels 205 is respectively connected to the second air inlet hole 206 (not shown in the figure).

[0054] The outer surface of the infusion housing 2 is also coated with a phase change material insulation layer 4. The phase change material insulation layer 4 is made of a mixture of paraffin and fatty acids or octadecanoic acid glyceride, and the melting point is around 35-38°C. The phase change material undergoes a phase change when the temperature changes, absorbs or releases heat, and maintains a stable temperature inside the infusion housing 2, thereby avoiding the problem of increased viscosity and reduced infusion speed due to the infusion liquid temperature being too low.

[0055] like Figure 1 , Figure 2 as well as Figure 4 As shown, there are four groups of buffer and pressurizing components 3, namely, two left and right groups of buffer and pressurizing components 3 located on the left and right sides of the infusion housing 2, and two upper and lower groups of buffer and pressurizing components 3 located above the upper end cover and below the lower end cover of the infusion housing 2.

[0056] The buffer pressurizing component 3 is distributed corresponding to the position of the valve hole 204. The buffer pressurizing component 3 includes a fixed tube 301, a sliding tube 302, a connecting plate 303, an intake check valve 305, an exhaust check valve 306 and a buffer spring 307. One axial end of the sliding tube 302 is fixedly connected to the inner wall of the fixed shell 1 through the connecting plate 303, and the other end is coaxially slidably connected to the inside of the fixed tube 301. The internal cavities between the two are connected to form a closed cavity structure. One end of the fixed tube 301 away from the connecting plate 303 is fixed to the outer wall of the infusion shell 2, and a sealing ring 308 is arranged between the inner wall of the other end and the outer wall of the sliding tube 302. The buffer spring 307 is located inside the fixed tube 301 and is arranged between the sliding tube 302 and the fixed tube 301. The length of the spring 307 is distributed along the sliding direction of the sliding tube 302, and the two ends are respectively fixed to the sliding end of the sliding tube 302 and the end of the fixed tube 301 away from the connecting plate 303. The sliding tube 302 is buffered by the buffer spring 307 during the sliding process, and horizontal slide grooves 101 distributed in the left and right directions are arranged on the inner walls of the upper and lower end covers of the fixed shell 1, and vertical slide grooves 102 distributed in the vertical direction are arranged on the left and right inner walls of the fixed shell 1. The connecting plates 303 of the two groups of buffer pressurizing assemblies 3 distributed horizontally on the left and right can slide up and down along the vertical slide grooves 102 on the inner wall of the fixed shell 1, and the connecting plates 303 of the two groups of buffer pressurizing assemblies 3 distributed in the vertical direction can slide left and right along the horizontal slide grooves 101 on the inner wall of the fixed shell 1.

[0057] A first air inlet hole 304 is arranged on the circumferential surface of one end of the fixed tube 301 close to the outer wall of the infusion shell 2, and an air inlet check valve 305 is arranged in the first air inlet hole 304. The air inlet check valve 305 is arranged to control the flow direction of gas so that gas can only enter the fixed tube 301 from the outside, but cannot flow from the inside of the fixed tube 301 to the outside. In addition, an exhaust check valve 306 is arranged inside the valve hole 204. The inside of the fixed tube 301 is connected to the air flow channel 205 through the exhaust check valve 306, and then connected to the upper inner part of the infusion shell 2. The exhaust check valve 306 can limit the gas flow direction from the inside of the fixed tube 301 to the inside of the infusion shell 2, and the gas inside the infusion shell 2 cannot be drawn into the inside of the fixed tube 301.

[0058] In addition, an exhaust port 203 is also provided at the upper end of the infusion housing 2, and the exhaust port 203 is connected to an exhaust pipe 8. One end of the exhaust pipe 8 is connected to the upper inner part of the infusion housing 2, and the other end is connected to the external environment of the fixed housing 1 after passing through the fixed housing 1. An exhaust valve 801 is provided in the exhaust pipe 8, and a pressure threshold is set for the exhaust valve 801. Since the inside of the infusion housing 2 is continuously pressurized during the shaking process, when the air pressure in the upper part of the infusion housing 2 is greater than the pressure threshold, the exhaust valve 801 automatically opens, and the gas inside the infusion housing 2 is discharged through the exhaust pipe 8, thereby avoiding safety hazards caused by excessive air pressure inside the infusion housing 2.

[0059] A heat exchange component 9 is also provided above the fixed shell 1. Both the air inlet pipe 5 and the liquid inlet pipe 6 pass through the heat exchange component 9. The heat exchange component 9 performs heat exchange on the gas passing through the air inlet pipe 5 and the liquid in the liquid inlet pipe 6 to ensure that the pressurized gas and the infusion liquid entering the infusion shell 2 are kept within a suitable temperature range, thereby avoiding the generation of bubbles due to the release of dissolved gas caused by the gas and liquid entering the infusion shell 2 in the cold external environment due to the low temperature in the initial state and the temperature rise after entering the infusion shell 2.

[0060] The working principle of the technical solution of the present invention is described in detail below:

[0061] When the infusion housing 2 and the fixed housing 1 shake relative to each other, the working principle of the present invention is explained by taking the left and right shaking as an example. Figure 5As shown, when the infusion housing 2 is displaced to the right due to shaking, the buffer springs on the left and right groups of buffer and pressure components 3 both act as resistance, buffering the shaking to prevent the shaking from being too large; the buffer and pressure components 3 on the left and right sides of the infusion housing 2 will be extended or shortened in length by the horizontal force in the left and right directions, and the upper and lower groups of buffer and pressure components 3 are connected to the inner wall of the fixed housing 1 for sliding left and right. Assuming that the infusion housing 2 and the fixed housing 1 move relatively to the right in a certain state, the buffer and pressure component 3 on the left is stretched and extended at this time, and the closed cavity between the fixed tube 301 and the sliding rod 302 is enlarged in volume due to the overall sealing, and the internal pressure is reduced, and the external gas enters the fixed tube 301 through the air inlet pipe 5, the second air inlet hole 206 and the air inlet check valve 305. Inside the fixed tube 301, external gas is drawn into the buffer pressurizing component 3, and at the same time, the right buffer pressurizing component 3 is compressed and shortened, and the gas inside the fixed tube 301 and the sliding tube 302 is compressed, and passes through the exhaust one-way valve 306, the air flow channel 205, and the second air inlet 206 in sequence to enter the upper part of the cavity of the infusion shell 2, thereby pressurizing the inside of the infusion shell 2; in one action stroke, the left buffer pressurizing component 3 performs an air suction operation when it is extended, and at the same time, the right buffer pressurizing component 3 performs a pressurizing operation when it is shortened. The two symmetrically arranged groups of buffer pressurizing components 3 perform air suction and pressurization at intervals, and can continuously inflate and pressurize the upper part of the infusion shell 1. At this time, the upper and lower groups of buffer pressurizing components slide left and right synchronously with the extension or shortening of the left and right groups of buffer pressurizing components.

[0062] According to the relationship between gas solubility and pressure in Henry's law, at a constant temperature, the amount of gas dissolved in a certain liquid is proportional to the partial pressure of the gas above the liquid. Therefore, the device realizes a buffering effect on the infusion housing 2 during the shaking process inside the fixed housing 1 through the buffer pressurization component 3, and at the same time realizes a pressurization operation on the upper part of the infusion housing 2 to suppress the formation of bubbles inside the infusion housing 2, and avoids the problem of bubbles being easily generated due to too low pressure above the liquid in a plateau low-pressure environment, and bubbles being generated due to the shaking of the liquid caused by the shaking of the device during travel; moreover, the buffer pressurization component 3 used in the device, when the overall structure of the infusion device shakes more, the larger the expansion and contraction range of the buffer pressurization component 3, the larger the amount of gas input into the infusion housing 2, and the greater the pressure in the upper part of the infusion housing 2, thereby further suppressing the formation of bubbles caused by shaking, that is, the buffer pressurization component 3 adaptively pressurizes the upper part of the infusion housing 2 with the shaking amplitude of the infusion housing 2, effectively improving the effect of suppressing the formation of bubbles caused by shaking.

[0063] The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements can be made without departing from the principle of the present invention. These improvements should also be regarded as the protection scope of the present invention.

Claims

1. A high-altitude cold region field emergency infusion device, characterized in that: include: A fixed shell (1), the fixed shell (1) being a rigid member and having a first cavity arranged therein; An infusion housing (2), the infusion housing (2) being a rigid part, arranged inside the first cavity, and the upper and lower ends of the infusion housing (2) are respectively connected to a liquid inlet pipe (6) and a liquid outlet pipe (7) extending to the outside of the fixed housing; A buffer pressurizing component (3), the buffer pressurizing component (3) being arranged between the inner wall of the fixed housing (1) and the inner wall of the infusion housing (2), and being composed of a fixed tube (301) and a sliding tube (302) axially slidably connected to the interior of the fixed tube (302); one end of the fixed tube (301) being fixed to the outer wall of the infusion housing (2) and communicating with the interior of the infusion housing (2), and the other end being communicating with the sliding tube (302); one end of the sliding tube (302) being away from the fixed tube (301) being connected to the inner wall of the fixed housing (1), and the interior of the fixed tube (301) being communicating with the interior of the sliding tube (302) to form a closed cavity; and a first air inlet hole (304) communicating with the interior of the infusion housing (2) is provided on the side wall of the fixed tube (301) close to one end of the infusion housing (2); and an air intake check valve (305), which is disposed in the first air intake hole (304) and is used to control the flow direction of the gas from the outside of the fixed tube (301) to the inside; The exhaust check valve (306) is arranged between the fixed tube (301) and the side wall of the infusion housing (2) and is used to control the gas flow direction from the inside of the fixed tube (301) to the inside of the infusion housing (2).

2. The highland cold region field emergency infusion device according to claim 1, characterized in that: The buffer pressurizing components (3) are symmetrically arranged in pairs along the circumferential direction of the outer side of the infusion housing (2).

3. The highland cold region field emergency infusion device according to claim 1, characterized in that: The infusion housing (2) An air flow channel (205) is provided inside the side wall, one end of the air flow channel (205) is connected to the inside of the fixed tube (301) through the exhaust one-way valve (306), and the other end extends along the inside of the side wall of the infusion housing (2) and is connected to the upper part of the infusion housing through the second air inlet hole (206), and the second air inlet hole (206) is located at the upper end of the infusion housing (2).

4. The highland cold region field emergency infusion device according to claim 1, characterized in that: The buffer pressurizing assembly (3) further comprises a buffer spring (307), and both ends of the buffer spring (307) in the length direction are fixedly connected to the sliding tube (302) and the fixed tube (301) respectively.

5. The highland cold region field emergency infusion device according to claim 1, characterized in that: The infusion housing (2) The outer surface is covered with an insulation layer.

6. The highland cold region field emergency infusion device according to claim 5, characterized in that: The thermal insulation layer is a phase change material thermal insulation layer (4), and the infusion housing (2) is made of a heat-conducting material.

7. The plateau cold region field emergency infusion device according to claim 1, characterized in that: The fixed housing (1) is provided with an air intake pipe (5), and a filter screen (501) is provided inside the air intake pipe.

8. The highland cold region field emergency infusion device according to claim 7, characterized in that: A heat exchange component (9) is arranged on the fixed shell, and the air inlet pipe (5) and the liquid inlet pipe (6) both pass through the interior of the heat exchange component (9) and are in contact with the heat exchange medium inside the heat exchange component (9).

9. The highland cold region field emergency infusion device according to claim 1, characterized in that: A flow regulator (701) is provided at one end of the liquid outlet pipe (7) extending out of the outside of the fixed shell (1).

10. The plateau cold region field emergency infusion device according to claim 1, characterized in that: The infusion housing (2) is also connected to an exhaust pipe (8), one end of the exhaust pipe (8) is in communication with the upper inner portion of the infusion housing (2), and the other end extends to the outside of the fixed housing (1), and an exhaust valve (801) is provided on the exhaust pipe (8).

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