Self-heating constant pressure infusion system

Abstract

The application provides a self-heating constant-pressure infusion system, which comprises an infusion box and a heating assembly. The infusion box comprises a box body and an upper cover. The box body is provided with an installation cavity with an open end, which is used for placing an infusion bag. The upper cover is used for covering the upper opening of the box body to close the upper opening of the installation cavity. The heating assembly is detachably arranged in the installation cavity and is arranged adjacent to the outer wall of the infusion bag. The heating assembly heats the infusion bag through a heat release reaction. The self-heating constant-pressure infusion system is provided with the heating assembly in the infusion box, so that the heating assembly heats the infusion bag through a heat release reaction, thereby achieving the heating of the infusion bag in an extremely cold area without power supply, enabling the infusion liquid to reach the required temperature of the human body, and ensuring the safety and comfort of the wounded and sick during infusion and avoiding adverse reactions caused by the excessively low temperature of the infusion liquid.

Description

Technical Field

[0001] This invention belongs to the field of medical instrument technology, specifically relating to a self-heating constant pressure infusion system, and more specifically to a self-heating constant pressure infusion system. Background Technology

[0002] Intravenous infusion is a crucial method in medical care. Strict safety requirements govern the entire process. Furthermore, the harsh treatment environment is a significant factor affecting treatment success. In particular, treatment in cold environments can cause the medication inside the infusion bag to become cold or even freeze. When administered, this can lower body temperature and trigger stress responses, potentially exacerbating harm to the patient. Additionally, using infusion boxes to keep the infusion bags warm, and the need for openings in the boxes to allow the infusion tubing to slide out, can easily lead to poor sealing between the box and the tubing.

[0003] Chinese patent application CN111658905A discloses a temperature-regulating device for a medical infusion bag. This patent includes a temperature-regulating device body comprising an inner liner and an outer shell, and a heating layer located between them. The heating layer includes a substrate with a foldable flexible portion and a heating portion. The flexible portion has a hollow structure, and the heating portion forms a heating zone using a printed ink composition. The heating zone consists of multiple strip-shaped heating films, each with an arc-shaped elastic body. The temperature-regulating device body is fitted onto the outside of the infusion bag body. The end of the infusion bag body containing the hook hole passes sequentially through an opening end and a closing end of the inner liner. The closing end has a small hole for the hook hole to be exposed on its surface. When the temperature-regulating device body is not fitted onto the infusion bag body, the arc-shaped portion of the elastic body faces the inner liner in its original state. When the temperature-regulating device body is fitted onto the infusion bag body, the arc-shaped portion of the elastic body faces the outer shell in an expanded state.

[0004] Existing portable intravenous infusion bag heating structures typically heat the infusion bag by installing a resistance wire on the inner wall of the bag's containing section, and then generating heat through the resistance wire by applying electricity. This solution is generally only suitable for indoor locations with electricity in cold northern regions. However, for field medical care in extremely cold regions without electricity, traditional solutions are unsuitable and cannot heat the infusion bag, resulting in low infusion temperatures and adverse effects on the patient after infusion. Summary of the Invention

[0005] Based on the technical problems existing in the prior art, the present invention provides a self-heating constant pressure infusion system, which aims to solve the technical problem of not being able to automatically heat the infusion bag in field rescue in extremely cold regions where there is no power supply.

[0006] To achieve the above objectives, the present invention provides a self-heating constant-pressure infusion system, comprising an infusion tank and a heating assembly. The infusion tank includes a tank body and a top cover. The tank body has an installation cavity with one open end for placing an infusion bag. The top cover covers the top opening of the tank body to close the top opening of the installation cavity. The heating assembly is detachably disposed within the installation cavity and is located adjacent to the outer wall of the infusion bag. The heating assembly heats the infusion bag through an exothermic reaction. The heating assembly adopts either electric heating or chemical reaction heating. An electric heating assembly is disposed within the installation cavity and consists of an electric heating container and a heat-conducting bag, which are movably connected.

[0007] Optionally, the self-heating constant pressure infusion system further includes a pressurizing component, which includes a pressurizing element disposed in the mounting cavity. The pressurizing element has an expanded state and a contracted state. When the pressurizing element is in the expanded state, it can apply pressure to the infusion bag through its own expansion. The pressurizing element and the heating component are located on opposite sides of the infusion bag.

[0008] Optionally, the heating assembly includes a material layer and an oxygen layer, with the pressurizing element, infusion bag, material layer, and oxygen layer arranged sequentially from top to bottom. A pressure needle is located on the side of the material layer facing the oxygen layer. When the pressurizing element applies pressure to the infusion bag, the pressure needle punctures the oxygen layer, causing the material in the material layer to react with the oxygen and generate heat to heat the infusion bag. Alternatively, the heating assembly includes a material layer and a solution layer, with the pressurizing element, infusion bag, material layer, and solution layer arranged sequentially from top to bottom. A pressure needle is located on the side of the material layer facing the solution layer. When the pressurizing element applies pressure to the infusion bag, the pressure needle punctures the solution layer, causing the material in the material layer to react with the leaked solution and generate heat to automatically heat the infusion bag.

[0009] Optionally, the pressurizing assembly also includes a pressure plate that is slidably connected to the inner wall of the infusion box and is located between the pressurizing component and the infusion bag.

[0010] Optionally, the pressurizing component is an airbag, and the pressurizing assembly also includes an inflation hose and an inflation component. One end of the inflation hose is connected to the airbag, and the other end of the inflation hose extends out of the infusion box and is connected to the inflation component. The inflation component inflates the airbag through the inflation hose.

[0011] Optionally, the enclosure includes an outer shell and an inner liner frame disposed inside the outer shell, with the inner liner frame and the outer shell spaced apart to form a vacuum chamber, and the mounting cavity is enclosed by the inner liner frame; or the enclosure is a hollow inner cavity type vacuum enclosure.

[0012] Optionally, one end of the infusion bag is connected to an infusion tube, and the end of the infusion tube away from the infusion bag is connected to an infusion needle. The housing is provided with a through hole for inserting the infusion tube, and the through hole passes through the outer shell and the inner liner frame in sequence. The self-heating constant pressure infusion system also includes a sealing adjustment device, which includes multiple fixing plates, and the multiple fixing plates are evenly distributed on the outer wall of the housing at the position corresponding to the through hole.

[0013] Optionally, each fixing plate includes a fixing part and a connecting part connected to the fixing part. The fixing part is fixedly connected to the outer shell, and the connecting part is slidably connected to a fixing frame. The fixing frame is arc-shaped, and the number of fixing frames is the same as the number of fixing plates and they are set one-to-one.

[0014] Optionally, each fixing frame has a connecting plate connected to its end away from the connecting part. The number of connecting plates is the same as the number of fixing frames and they are arranged in a one-to-one correspondence. Each connecting plate extends in a direction away from the outer wall of the outer shell. The outer side of each connecting plate is threadedly connected to the same fixing bushing. A sealing plate is fixedly connected to each connecting plate, and the sealing plate extends in a direction away from the outer wall of the outer shell. The number of sealing plates is the same as the number of connecting plates and they are arranged in a one-to-one correspondence. The inner wall of the sealing plate abuts against the outer wall of the infusion tube.

[0015] The beneficial effects of the self-heating constant pressure infusion system provided by the present invention are as follows: the self-heating constant pressure infusion system sets up a heating component in the infusion tank, so that the heating component heats the infusion bag through an exothermic reaction, thereby realizing the heating of the infusion bag in extremely cold environments without power supply, so that the infused liquid can reach the temperature required by the human body, thereby ensuring the comfort of the patient during infusion and avoiding adverse reactions caused by the drug solution being too cold. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the structure of a self-heating constant pressure infusion system provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of an infusion box provided in an embodiment of the present invention; Figure 3 A schematic diagram of a self-heating constant pressure infusion system provided for another embodiment of the present invention; Figure 4 A schematic diagram of the structure of a self-heating constant pressure infusion system provided in another embodiment of the present invention; Figure 5 A partial structural schematic diagram of a self-heating constant pressure infusion system provided as another embodiment of the present invention; Figure 6 A partial structural schematic diagram of a self-heating constant pressure infusion system provided as another embodiment of the present invention; Figure 7 A schematic diagram of the sealing adjustment device provided in another embodiment of the present invention; Figure 8 A schematic diagram of the disassembled structure of a sealing adjustment device provided in another embodiment of the present invention; Figure 9 A partial structural schematic diagram of a sealing adjustment device provided in another embodiment of the present invention; Figure 10 for Figure 9 Enlarged structural diagram at point A in the middle; Figure 11 A schematic diagram of the structure of an auxiliary device provided in another embodiment of the present invention; Figure 12 A schematic diagram of the disassembled structure of an auxiliary device provided in another embodiment of the present invention; Figure 13 for Figure 12 Enlarged structural diagram at point B; Figure 14 A partial structural schematic diagram of an auxiliary device provided in another embodiment of the present invention; Figure 15 This is a schematic diagram of the structure of a heat-insulating pipe provided in another embodiment of the present invention; Figure 16 A flowchart of the operation of a self-heating constant pressure infusion system provided in another embodiment of the present invention.

[0018] The details of the reference numerals used in the above figures are as follows: 100. Infusion box; 1001. Mounting cavity; 1002. Box body; 10021. Outer shell; 10022. Inner liner frame; 1003. Top cover; 1004. Vacuum chamber; 101. Pressurizing component; 102. Infusion bag; 103. Material layer; 104. Oxygen layer; 105. Adapter block; 106. Pressure plate; 107. Slide rail; 108. Inflation hose; 109. Inflation component; 110. Infusion tube; 111. Infusion needle; 112. Through hole; 113. Fixing plate; 1131. Fixing part; 1132. Connecting part; 114. Fixing frame; 115. Connecting plate; 116. Fixing bushing; 117. Sealing plate; 118. Connecting belt; 119. Sealing cover; 120. Sliding ring; 121. Restraint belt; 122. Sealing gasket; 123. Fixing bracket; 124. Rotating rod; 125. Limiting 126. Positioning block; 127. Limiting hole; 128. Pull ring; 129. Coil spring; 130. Connecting pipe; 131. Positioning ring; 132. Positioning frame; 133. Sliding rod; 134. Inlay plate; 135. Connecting ring; 136. Inlay frame; 137. Clip frame; 138. Elastic rope; 139. Slide groove; 140. Clip plate; 141. Clip groove; 142. Sealing ring; 143. Sealing groove; 144. Thermostat; 145. Bearing frame; 146. Bearing plate; 147. Heating tube; 148. Heater; 149. Alarm; 150. Temperature sensor; 151. Insulation tube; 152. Thermometer. Detailed Implementation

[0019] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0020] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly or indirectly on that other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to that other element. Unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] As described in the background section, currently, in field medical care in extremely cold regions without power supply, it is impossible to heat the infusion bag by means of electricity. This results in low infusion temperatures, which can have adverse effects on the wounded or sick after infusion. See Figure 1 As shown, to solve the above problems, embodiments of the present invention provide a self-heating constant-pressure infusion system, including an infusion tank 100 and a heating assembly. The infusion tank 100 includes a tank body 1002 and a top cover 1003. The tank body 1002 has a mounting cavity 1001 with one open end, which is used to place an infusion bag 102. The top cover 1003 is used to cover the upper opening of the tank body to close the upper opening of the mounting cavity. It can be understood that the infusion tank 100 includes a tank body 1002 and a top cover 1003, as... Figure 2 As shown, the infusion box 100 can be opened and closed via the top cover 1003 to facilitate the placement and removal of items stored inside. Since the infusion bag 102 is placed inside the infusion box 100, it not only reduces the rate of temperature loss but also avoids interference from external air pressure. The box body 1002 or the top cover 1003 has pre-drilled ports for infusion tubing routing. A heating component is detachably installed within the mounting cavity 1001, adjacent to the outer wall of the infusion bag 102. In one embodiment, the heating component heats the infusion bag 102 through an exothermic reaction, i.e., using chemical reaction heating. This configuration allows the exothermic reaction of the heating component to generate heat to heat the infusion bag 102, enabling heating even in extremely cold environments without electricity. This ensures the infused fluid reaches the body's required temperature (generally 37°C), guaranteeing patient comfort during infusion and preventing adverse reactions caused by excessively low fluid temperature. Furthermore, since the heating element is detachably installed inside the infusion tank 100, it is easy to replace the heating element in order to maintain heating.

[0024] Specifically, the heating assembly includes a material layer and an oxygen layer, with the pressurizing element, infusion bag, material layer, and oxygen layer arranged sequentially from top to bottom. A pressure needle is located on the side of the material layer facing the oxygen layer. When the pressurizing element applies pressure to the infusion bag, the pressure needle punctures the oxygen layer, allowing the material in the material layer to react with the oxygen and generate heat to heat the infusion bag. Alternatively, the heating assembly includes a material layer and a solution layer, with the pressurizing element, infusion bag, material layer, and solution layer arranged sequentially from top to bottom. A pressure needle is located on the side of the material layer facing the solution layer. When the pressurizing element applies pressure to the infusion bag, the pressure needle punctures the solution layer, allowing the material in the material layer to react with the leaked solution and generate heat to automatically heat the infusion bag.

[0025] In another embodiment, the heating component can be in the form of electric heating or chemical reaction heating, preferably an electric heating component. The electric heating component is placed in the mounting cavity 1001. The electric heating component consists of an electric heating container and a heat-conducting bag, which are movably connected. The heat-conducting bag can be removed from the electric heating container (detachably assembled together). The electric heating container is composed of an electric heating body and a heating cavity. The electric heating body has an embedded electric heating component, preferably an electric heating wire or a microwave heating component. The heating cavity receives the heat from the electric heating body and transfers the heat to the heat-conducting bag. The heating cavity is preferably a U-shaped cavity, and the heat-conducting bag is placed inside the heating cavity. The heat-conducting bag contains a heat-conducting liquid. The heat-conducting bag is made of silicone, soft plastic, or soft metal material. In other words, the traditional heat-conducting solution is encapsulated in a soft bag (heat-conducting bag). This soft bag (heat-conducting bag) is placed in an electric heating container. When in use, the infusion bag can be placed directly into the soft bag (heat-conducting bag). Because the soft bag (heat-conducting bag) is highly malleable, the infusion bag can be easily submerged (enclosed) in the heat-conducting bag. The heat-conducting bag is in close contact with the infusion bag 102 and effectively transfers heat to the infusion bag 102, thereby achieving the purpose of heating.

[0026] The electric heating component is powered by electricity or a power source. In the absence of electricity or a power source, a chemical reaction heating method is used. In this case, a suitable flexible self-heating pack or a molded self-heating pack is placed directly between the heating chamber and the heat-conducting bag to heat the heat-conducting bag. Compared to traditional methods that use a self-heating pack in direct contact with the infusion bag or with a thin layer between them, or compared to electric heating, this invention transfers heat to the infusion bag through a heat-conducting soft bag. This ensures uniform heating of the infusion bag and avoids deformation or damage caused by uneven heating of the outer packaging of conventional infusion bags (e.g., plastic packaging). Furthermore, the use of a heat-conducting soft bag to transfer heat to the infusion bag greatly expands the range of applicable infusion bags, allowing the use of both ordinary commercially available infusion bags and specially designed infusion bags.

[0027] In electrically heated systems, external power supply can be used, such as external AC or DC power, or solar or wind power; battery power, such as lithium or lead-acid batteries, is preferred. In electrically heated systems, the constant pressure system of the self-heating constant pressure infusion system can be electrically pressurized, using existing technology, to maintain the pressure within a predetermined or preset pressure range. In electrically heated systems using large-capacity batteries, the large-capacity batteries are located outside the enclosure, i.e., separately from the enclosure, and connected to the power supply via power lines.

[0028] In one embodiment, the enclosure 1002 is an explosion-proof enclosure, and the top cover 1003 is an explosion-proof top cover. The thickness of the enclosure or the top cover is between 2 mm and 10 mm, preferably 4 mm to 8 mm, and more preferably 5 mm. The enclosure or top cover is made of materials such as steel plate, cast iron, and aluminum alloy; if the enclosure is made of steel plate, its thickness is 2-3 mm; if the enclosure is made of cast iron, its thickness is 5-8 mm; and if the enclosure is made of aluminum alloy, its thickness is 3-4 mm. The explosion-proof structure design prevents violent impacts in the wild, thus making the enclosure resistant to drops and damage to a certain extent.

[0029] In one embodiment, the infusion bag 102 has a double-layer structure, consisting of an inner bag and an outer bag. The inner bag is tightly fitted inside the outer bag, and the melting point of the outer bag is higher than that of the inner bag. This double-layer structure of the infusion bag 102 prevents overheating, reduces the risk of the inner bag being squeezed or rubbed and thus breaking, and also prevents external contamination. Furthermore, in a preferred embodiment, the infusion bag 102 adopts a structure with separate inner and outer bags. This facilitates direct compatibility of the inner bag with commercially available infusion bags or existing portable infusion bags, allowing existing infusion bags to be directly inserted into the outer bag. The outer bag is designed to facilitate uniform heating; for example, the outer layer is made of high-temperature resistant and thermally conductive aluminum-plastic composite, which is in contact with the heating element and easily absorbs heat. The inner layer is made of a flexible and thermally conductive material, allowing it to fit snugly against commercially available infusion bags or existing portable infusion bags, thus efficiently transferring heat to them. Furthermore, the cavity of the double-layered infusion bag 102 is filled with a low-melting-point thermally conductive liquid, ensuring a uniform temperature within the inner bag even when the outer bag is heated unevenly.

[0030] See Figure 3As shown, in one embodiment, the self-heating constant-pressure infusion system further includes a pressurizing component, which includes a pressurizing element 101 disposed in the mounting cavity 1001. The pressurizing element 101 has an expanded state and a contracted state. When the pressurizing element 101 is in the expanded state, it can apply pressure to the infusion bag 102 through its own expansion. The pressurizing element 101 and the heating component are located on opposite sides of the infusion bag 102. This arrangement enables the pressurizing element 101 to apply pressure to the infusion bag 102 through its own expansion, causing the infusion bag 102 to generate pressure and squeeze the medication outwards, ensuring smooth medication output. In another embodiment, in an electrically heated system, the pressurizing component of the self-heating constant-pressure infusion system can be replaced with an electrically powered pressurizing method. Here, the electrically powered pressurizing method used in the prior art is adopted to maintain or ensure pressure is applied to the infusion bag 102.

[0031] See Figure 3As shown, in one embodiment, the heating assembly includes a material layer 103 and an oxygen layer 104. The pressurizing member 101, the infusion bag 102, the material layer 103, and the oxygen layer 104 are arranged sequentially from top to bottom. It can be understood that the oxygen layer 104 is located on the side of the infusion bag 102 away from the pressurizing member 101 and is spaced apart from the infusion bag 102. The material layer 103 is located between the oxygen layer 104 and the infusion bag 102, so that the infusion bag 102 is placed on top of the material layer 103. The side of the material layer 103 facing the oxygen layer 104 is provided with a pressure needle. When the pressurizing member 101 applies pressure to the infusion bag 102, the pressure needle punctures the oxygen layer 104, so that the material in the material layer 103 reacts with the oxygen to generate heat and heat the infusion bag 102. The materials within material layer 103 include iron powder, stone, activated carbon, inorganic salts, water, and wood flour, etc. The external structure of material layer 103 consists of a raw material layer, a gelatin layer, and a non-woven fabric bag. This arrangement allows oxygen in oxygen layer 104 to move towards material layer 103 through the outlet formed by the needle puncture, and to enter its inner layer through the outer wall of material layer 103 to undergo an exothermic reaction, thereby generating heat to heat the infusion bag 102. In this embodiment, oxygen layer 104 stores oxygen; its side near material layer 103 is made of a soft material, making it easily puncturable, while the side away from material layer 103 can be made of a hard material to ensure structural strength. In another embodiment, the oxygen layer is a flowable solution or a liquid layer arranged in a bagged layer. The material layer is filled with a material that readily reacts with the flowable solution or liquid. When the flowable solution or liquid in the liquid layer leaks into the material layer, it reacts with the material, generating or dissipating heat. In a preferred embodiment, the liquid layer is charged with low-temperature water, and the material layer is a heating pack or heating layer, preferably quicklime (calcium oxide). Quicklime (calcium oxide) reacts chemically with water to transform into slaked lime (calcium hydroxide), releasing a large amount of heat in the process. In another embodiment, the material layer also contains iron powder, aluminum powder, activated carbon, sodium carbonate, etc. These components also generate heat when they come into contact with water and oxygen. Iron powder and aluminum powder can release a small amount of heat by reacting with oxygen. Activated carbon can also adsorb various effective components, allowing them to fully contact and react chemically, thereby generating heat. Sodium carbonate can also adsorb moisture in the chamber, playing an auxiliary role in the reaction.

[0032] See Figure 3 As shown, in one embodiment, the pressurizing assembly further includes a pressure plate 106, which is slidably connected to the inner wall of the infusion tank 100 and is located between the pressurizing component 101 and the infusion bag 102. The pressure plate 106 makes the pressure applied to the infusion bag 102 more uniform and stable, preventing damage to the infusion bag 102.

[0033] Optionally, the pressure plate 106 is slidably connected to the inner wall of the infusion tank 100, and the inner wall of the infusion tank 100 is provided with a slide rail 107 that is slidably connected to the pressure plate 106.

[0034] See Figure 3 As shown, in one embodiment, the pressurizing assembly further includes an adapter block 105, which is fixed above the pressure plate 106 and disposed on the side near the pressurizing member 101. The side of the adapter block 105 facing the pressurizing member 101 is provided with a groove that is adapted to the pressurizing member 101. By providing a groove on the adapter block 105, for example, the cross-section of the groove is arc-shaped, the pressing between the pressurizing member 101 and the adapter block 105 is more stable, and the force transmission is more stable and reliable.

[0035] See Figure 3 and Figure 4 As shown, in one embodiment, the pressurizing component 101 is an air bladder. The pressurizing assembly also includes an inflation hose 108 and an inflation component 109. One end of the inflation hose 108 is connected to the air bladder, and the other end of the inflation hose 108 extends out of the infusion tank 100 and connects to the inflation component 109. The inflation component 109 inflates the air bladder through the inflation hose 108. This configuration allows the air bladder to be inflated by squeezing the inflation component 109, generating pressure through the expansion of the air bladder, thereby applying pressure to the infusion bag 102 and ensuring the infusion rate of the medication. The inflation component 109 is an electric air pump, which can quickly and continuously inflate the air bladder. Optionally, a flow regulating valve is provided on the inflation hose 108. By setting the flow regulating valve, the amount of air inflated by the inflation component 109 into the air bladder can be adjusted, thereby controlling the infusion flow rate of the infusion bag 102. Of course, the inflator 109 can also use a manual air pump to manually inflate the airbag. This not only meets the pressurization needs in the absence of power supply, but also reduces costs.

[0036] See Figure 4 and Figure 5 As shown, in one embodiment, the housing 1002 includes an outer shell 10021 and an inner liner frame 10022 disposed inside the outer shell 10021. The inner liner frame 10022 and the outer shell 10021 are spaced apart to form a vacuum chamber 1004, and the mounting cavity 1001 is enclosed by the inner liner frame 10022; or the housing is a hollow inner cavity type vacuum housing. Since the vacuum chamber 1004 is formed between the inner liner frame 10022 and the outer shell 10021, the infusion bag 102 can be effectively isolated from the external environment and is not affected by external air pressure. At the same time, it can also enhance the heat preservation performance of the infusion box 100, maintain the temperature inside the mounting cavity 1001, and thus avoid excessive temperature loss inside the mounting cavity 1001.

[0037] See Figures 4 to 10As shown, in one embodiment, one end of the infusion bag 102 is connected to an infusion tube 110, and the end of the infusion tube 110 away from the infusion bag 102 is connected to an infusion needle 111. The housing 1002 is provided with a through hole 112 for the infusion tube 110 to pass through. The through hole 112 passes through the outer shell 10021 and the inner liner frame 10022 in sequence. Figure 4 and Figure 6 As shown; Figures 7 to 10As shown, the self-heating constant pressure infusion system also includes a sealing adjustment device. The sealing adjustment device includes multiple fixing plates 113, which are evenly distributed on the outer wall of the outer casing 10021 at positions corresponding to the through holes 112. Each fixing plate 113 includes a fixing part 1131 and a connecting part 1132 connected to the fixing part 1131. The fixing part 1131 is fixedly connected to the outer casing 10021, and a fixing frame 114 is slidably connected to the connecting part 1132. The fixing frame 114 is arc-shaped, and the number of fixing frames 114 is the same as the number of fixing plates 113, and they are arranged in a one-to-one correspondence. Each fixing frame 114 is located away from the connecting part 113. One end of the 2 is connected to a connecting plate 115. The number of connecting plates 115 is the same as the number of fixed frames 114 and they are arranged in a one-to-one correspondence. Each connecting plate 115 extends in a direction away from the outer wall of the outer shell 10021. The outer side of each connecting plate 115 is threadedly connected to the same fixed bushing 116. A sealing plate 117 is fixedly connected to the connecting plate 115. The sealing plate 117 extends in a direction away from the outer wall of the outer shell 10021. The number of sealing plates 117 is the same as the number of connecting plates 115 and they are arranged in a one-to-one correspondence. The inner wall of the sealing plate 117 abuts against the outer wall of the infusion tube 110 to prevent heat from dissipating from the inside of the infusion box 100. In this embodiment, a connecting strip 118 is connected to the outer wall of the outer shell 10021. One end of the connecting strip 118 is connected to a sealing cap 119. The radial cross-sectional dimension of the sealing cap 119 is adapted to the radial cross-sectional dimension of the multiple sealing plates 117. Because the housing 1002 needs to have an opening to allow the infusion tube 110 to slide out, the sealing between the housing 1002 and the infusion tube 110 is prone to be poor. In this embodiment, four fixing plates 113 are arranged around the circumference of the through hole 112. The four fixing plates 113 are slidably connected to four fixing frames 114. Each fixing plate 113 is slidably connected to an arc-shaped fixing frame 114. First, the infusion tube 110 is inserted into the through hole 112 and extends out of the box body 1002. Then, the fixing frames 114 that are slidably connected to the fixing plates 113 around the through hole 112 are moved. The four fixing frames 114 squeeze the infusion tube 110 in the through hole 112. At this time, the four fixing frames 114 form a circular closed loop. Then, the fixing bushing 116 is threadedly connected to the connecting plate 115 on the fixing frame 114, thereby fixing the position of the entire fixing frame 114. When the through hole 112 is not in use, the sealing cover 119 can be connected to the sealing plate 117 fixed on the connecting plate 115 to seal the entire through hole 112 and prevent the loss of heat in the infusion box 100.

[0038] See Figure 9As shown, in one embodiment, a sliding ring 120 is rotatably connected to the outer wall of the fixed bushing 116, and a restraining strap 121 is fixedly connected to one side of the sliding ring 120. The end of the restraining strap 121 away from the sliding ring 120 is fixedly connected to the outer wall of the infusion box 100. This arrangement allows for convenient positioning of the fixed bushing 116 via the sliding ring 120 and the restraining strap 121, and also prevents the fixed bushing 116 from being lost.

[0039] See Figure 8 As shown, in one embodiment, a sealing gasket 122 is fixedly connected to the inner wall of each fixing frame 114 on the side closest to each other, and the inner wall of the sealing gasket 122 abuts against the outer wall of the infusion tube 110. With this arrangement, when the fixing frame 114 is used to squeeze and limit the infusion tube 110, the sealing gasket 122 on the inner wall surface of the fixing frame 114 can increase friction, which facilitates better fixation and limiting.

[0040] In one embodiment, a fixing frame 123 is fixedly connected to one end of the connecting part 1132 away from the through hole 112. A rotating rod 124 is rotatably connected to the fixing frame 123. A limiting block 125 is connected to the rotating rod 124. A limiting hole 126 for insertion into the limiting block 125 is provided on the fixing frame 114. A pull ring 127 is provided on the rotating rod 124.

[0041] See Figure 7 and Figure 10 As shown, in one embodiment, the rotating rod 124 is L-shaped, and a limiting block 125 is fixedly connected to the bottom surface of the short arm end of the rotating rod 124. The limiting block 125 is cone-shaped, and a limiting hole 126 is opened on the surface of the fixed frame 114 corresponding to the position of the limiting block 125. The limiting hole 126 is adapted to the limiting block 125. A circular pull ring 127 is rotatably connected to the end of the rotating rod 124 away from the fixed frame 123. During the process of moving and adjusting the position of the fixed frame 114, in order to prevent the position of the fixed frame 114 from shaking, the limiting block 125 fixed at one end of the rotating rod 124 is inserted and fixed to the limiting hole 126 opened on the surface of the fixed frame 114. When moving and adjusting the position of the rotating rod 124, pulling the pull ring 127 can be operated conveniently.

[0042] See Figure 10 As shown, in one embodiment, a coil spring 128 is fitted on the pivot on which the fixed frame 123 is rotatably connected to the rotating rod 124. The two ends of the coil spring 128 are fixedly connected to the rotating rod 124 and the fixed frame 123, respectively. This arrangement allows the coil spring 128 to compress and limit the position of the rotating rod 124, preventing the position of the rotating rod 124 from shifting and ensuring that the limiting block 125 and the limiting hole 126 are aligned during insertion.

[0043] See Figures 11 to 14As shown, in one embodiment, a connecting pipe 129 connects the infusion bag 102 and the infusion tube 110. An auxiliary device is provided between the connecting pipe 129 and the infusion tube 110. The auxiliary device includes a positioning ring 130, which is sleeved on the outer wall of the connecting pipe 129. A plurality of positioning frames 131 are provided at intervals on the outer wall of the positioning ring 130. Positioning plates 132 are rotatably connected to the positioning frames 131. The number of positioning frames 131 is the same as the number of positioning plates 132 and they are arranged in a one-to-one correspondence. For example, two positioning frames 131 and two positioning plates 132 are rotatably connected in a one-to-one correspondence. A sliding rod 133 is rotatably connected to the end of the positioning plate 132 away from the positioning frame 131. An inlay plate 134 is connected to the free end of the sliding rod 133. A connecting ring 135 is fitted onto the outer wall of the infusion tube 110. An inlay frame 136 for inserting into the inlay plate 134 is provided on the connecting ring 135. A retaining frame 137 is provided at the end of the inlay plate 134 near the infusion tube 110. An elastic rope 138 is fitted onto the connecting ring 135, and the inlay frame 136 is located inside the elastic rope 138. The elastic rope 138 is secured within the retaining frame 137. The infusion bag 102 and the infusion tube 110 are disposable medical supplies and may require replacement. The separate structure of the infusion bag 102 and the infusion tube 110 allows for replacement of only one type of infusion bag or tube, thus avoiding waste and reducing costs. In addition, since the infusion bag 102 and the infusion tube 110 are separate structures, in order to facilitate the docking and installation of the infusion tube 110 and the connecting tube 129 during the use of the infusion bag 102, the connecting tube 129 at one end of the infusion bag 102 is first inserted and limited by an auxiliary device, then the positioning plate 132 is rotated, and then the movable inlay plate 134 at one end of the positioning plate 132 is slid to insert the inlay plate 134 into the inlay frame 136, and then the connecting ring 135 is locked and limited by the clip frame 137. At this time, one end of the infusion tube 110 will be quickly docked, fixed and limited with the connecting tube 129 of the infusion bag 102.

[0044] Furthermore, a flow control device is provided on the connecting tube. Preferably, the flow control device is a micro flow control device, which includes a multi-channel microfluidic chip. The structure of the microfluidic chip includes a substrate and a cover plate that are bonded together. Both the substrate and the cover plate are plate-shaped or sheet-shaped. The side of the substrate facing the cover plate contains a channel structure formed by a molding process or an etching process. The substrate and the cover plate bonded together together form a microfluidic chip containing a channel structure. The channel structure is located at the junction area where the substrate and the cover plate are bonded together. The two ends of the channel are respectively connected to the liquid inlet end and the liquid outlet end of the microfluidic chip. The liquid inlet end is the injection end of the sample solution into the microfluidic chip, and the liquid outlet end is the liquid outlet end through which the liquid flows when the microfluidic chip is actually injected. The liquid outlet end and the liquid inlet end are far apart from each other, and the distance between the liquid outlet end and the liquid inlet end is between 3 cm and 10 cm. In a preferred embodiment, a miniature peristaltic pump is provided on the connecting tube to facilitate liquid flow. In another embodiment, the pump power unit (power source) on the connecting tube is a syringe plunger and a spring disposed between the syringe plunger and the syringe barrel. In a simplified embodiment, the flow control device can be a commercially available miniature flow valve (e.g., an ultra-small flow valve), or a manual or electric flow valve.

[0045] In another embodiment, an integrated infusion aspiration system is provided on the connecting tube. This system includes a catheter assembly and a flow control system. The catheter assembly includes an infusion catheter and an aspiration catheter. The infusion catheter passes through the sidewall of the aspiration catheter and enters through a hole formed in the sidewall of the aspiration catheter. The infusion catheter and the aspiration catheter are sealed together at the hole, for example, by welding, adhesive, or other conventional methods. The outer diameter of the infusion catheter is smaller than the inner diameter of the aspiration catheter, allowing fluid to flow freely within the lumen of the aspiration catheter. The fluid or fluid solution may contain a variety of different medications to optimally address postoperative problems related to trauma. The fluid solution may contain analgesics, anesthetics, antibiotics, antiseptics, anticoagulants, or anti-inflammatory agents, alone or in combination. Therefore, in addition to pain relief provided by analgesics and anesthetics, the addition of antibiotics and anti-inflammatory agents to the fluid solution can achieve treatment of infection while preventing further disease progression or reducing inflammation and swelling.

[0046] In a preferred embodiment, the flow control device employs passive components, such as springs or orifices, eliminating the need for a separate controller and thus preventing interference or malfunctions from other electromagnetic signals. Alternatively, a controller can be provided in addition to the passive components, connected to a power supply and / or flow controller. The controller is typically an electronic controller, preferably a microprocessor-based control device, to reduce the overall number of system components while simultaneously improving control efficiency and reducing the overall weight of the infusion system.

[0047] Furthermore, flow control and temperature control are combined, that is, a heat exchange device is used to integrate flow control and temperature control. The heat exchange device consists of multiple suction conduits or heat exchange tubes encapsulated in thermoplastic material. The heat exchange device is combined with a temperature sensor, a control microprocessor, a flow sensor, and suction conduits or valves to control the temperature of the bath and the quantity (flow rate) of the distributed treatment fluid in real time. Specifically, a circulating bath is set near the outlet of the infusion bag. The temperature of the circulating bath is controlled by a temperature controller of the heat exchanger and suction conduits. The fluid entering the body is continuously heated in the circulating bath. The temperature sensor is used to measure the temperature of the fluid, the control microprocessor controls the number of times the fluid circulates, and the flow sensor is used to monitor the flow rate of the output fluid, especially the flow rate of the fluid output to the body. The control microprocessor further includes a flow valve and a power pump. The flow valve controls the flow rate, and the power pump, preferably a micro-power pump, is installed in the pipeline that promotes the flow of the fluid. The power pump applies flow force to the fluid and accelerates the flow. Furthermore, the purpose of setting up a circulating bath is to ensure that the temperature of the liquid output to the human body is within a reasonable range, such as between 35 and 45 degrees Celsius, with 37 degrees Celsius being the optimal choice. That is, the temperature of the liquid after passing through the circulating bath (the liquid input to the human body) is generally 37 degrees Celsius. When the temperature of the liquid output to the human body is below 36 degrees Celsius, a bypass return line installed at the front end of the infusion line allows the liquid below 36 degrees Celsius to flow back into the liquid pipeline before the circulating bath for another cycle of heating or warming. When the temperature of the liquid output to the human body is above 39 degrees Celsius, a bypass return line installed at the front end of the infusion line allows the liquid above 39 degrees Celsius to flow back into the liquid pipeline before the circulating bath for another cycle of cooling or heat dissipation. In this structure, the temperature sensor installed on the infusion line is located at the rear end of the bypass return line. The bypass return line serves to return liquids with a temperature below 36°C or a temperature above 39°C to the liquid line that only detects liquids before the circulating bath. Furthermore, the temperature sensor installed on the infusion line and the diversion valve controlled by the microprocessor are connected in series, and the diversion valve is directly connected to the bypass return line.

[0048] The temperature sensor employs a resistive temperature device or a thermocouple. Alternatively, a thermistor can be used to measure temperature.

[0049] See Figure 14As shown, in one embodiment, the inner wall of the connecting tube 129 is provided with a plurality of sliding grooves 139 extending axially along the connecting tube 129, and the outer wall of the infusion tube 110 is provided with a retaining plate 140 that is slidably connected to the sliding grooves 139. The number of retaining plates 140 is the same as the number of sliding grooves 139 and they are arranged in a one-to-one correspondence. During the insertion and positioning process between the connecting tube 129 and the infusion tube 110, the sliding grooves 139 on the inner wall of the connecting tube 129 are used to insert into the retaining plate 140 on the surface of the infusion tube 110 to prevent the position of the infusion tube 110 from shifting.

[0050] See Figure 14 As shown, in one embodiment, a groove 141 is formed on the outer wall of the end of the infusion tube 110 near the connecting tube 129. A sealing ring 142 is fitted on the inner wall of the groove 141. A sealing groove 143 is formed on the inner wall of the connecting tube 129 at the position corresponding to the sealing ring 142. The sealing groove 143 and the sealing ring 142 are press-fitted together. When the infusion tube 110 and the connecting tube 129 are inserted, the press-fitting connection between the sealing ring 142 fitted on the surface of the infusion tube 110 and the sealing groove 143 formed on the inner wall of the connecting tube 129 helps to increase the sealing performance between the pipes.

[0051] See Figure 15 As shown, in one embodiment, a thermostat 144 is installed on the outside of the infusion tube 110. One side of the thermostat 144 is fixedly connected to the side wall of the inner liner frame 10022 to keep the output liquid medicine at a constant temperature and pressure.

[0052] See Figures 4 to 6 As shown, in one embodiment, a heating system is installed on one side of the inner wall of the inner liner frame 10022. The heating system includes a support frame 145, the bottom of which is fixedly connected to the inner wall of the inner lining frame 10022. A support plate 146 is fixedly connected to the top of the support frame 145, abutting against the oxygen layer 104. A heating tube 147 is provided inside the support frame 145. The support plate 146 separates the infusion bag 102 from the heating tube 147 to prevent damage to the heating tube 147 in case of leakage. The heating tube 147 is electrically connected to a heater 148, which is fixed to the inner wall of the inner lining frame 10022. An alarm 149 is fixedly connected to the surface of the inner lining frame 10022 near the heater 148. A temperature sensor 150 is electrically connected to the bottom of the alarm 149. One side of the temperature sensor 150 is fixedly connected to the surface of the inner wall of the inner lining frame 10022, and the temperature sensor 150 is electrically connected to the heater 148. Figure 16As shown, the temperature sensor 150 can control the temperature between 35-40 degrees Celsius. An alarm will sound if the temperature falls below a critical value, and the system will automatically shut down if the temperature is too high. Preferably, the alarm uses both a sound alarm and an electro-optical alarm. The sound output of the sound alarm buzzer is installed on the wall panel of the self-heating, constant-pressure infusion system, and a high-brightness indicator light is also installed on the wall panel, thereby enabling a high-intensity alarm signal to be quickly transmitted to external personnel.

[0053] See Figure 15 As shown, in one embodiment, the self-heating constant-pressure infusion system further includes a heat-insulating tube 151, which is sleeved on the outside of the infusion tube 110. A thermometer 152 is provided on the heat-insulating tube 151 for measuring the temperature of the flowing medication within the infusion tube 110. This configuration allows the infusion tube 110 to pass through the heat-insulating tube 151 for heat preservation during infusion. The heat-insulating tube 151 effectively slows down the cooling rate of the medication within the infusion tube 110, ensuring the temperature of the medication injected into the patient's body. The temperature of the medication within the infusion tube 110 can be obtained in real time using the thermometer 152.

[0054] Furthermore, the self-heating constant pressure infusion system of the present invention adopts a modular design, integrating heating, constant pressure, control, alarm, etc. into modules. The various specific components of the present invention are respectively integrated into the heating module, constant pressure module, control module, and alarm module, thereby realizing the rapid assembly of the present invention and enabling non-professionals to assemble the self-heating constant pressure infusion system of the present invention themselves.

[0055] In summary, implementing the self-heating constant pressure infusion system provided in this embodiment has at least the following beneficial technical effects: (1) The self-heating constant pressure infusion system of the present invention can pressurize and heat the infusion bag 102 in an environment with no power supply in extremely cold regions, ensuring that the patient can receive infusion in a timely and smooth manner, and the infused liquid can reach the temperature required by the human body, ensuring the patient's comfort during infusion and avoiding adverse reactions caused by the low temperature of the liquid. (2) By setting a sealing adjustment device, the through hole 112 is sealed to prevent heat loss in the infusion tank 100; (3) When it is necessary to replace the connecting tube 129 and the infusion tube 110 fixed on the infusion bag 102 during the use of the infusion bag 102, the infusion tube 110 and the connecting tube 129 can be quickly connected and fixed by setting an auxiliary device.

[0056] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A self-heating, constant-pressure infusion system, characterized in that, It includes an infusion box and a heating assembly. The infusion box includes a box body and a top cover. The box body has a mounting cavity with an opening at one end for placing an infusion bag. The top cover is used to cover the top opening of the box body to close the top opening of the mounting cavity. The heating component is detachably disposed in the mounting cavity and is disposed adjacent to the outer wall of the infusion bag. The heating component heats the infusion bag through automatic exothermic reaction, electric heating, or circulating heating. The heating component adopts either electric heating or chemical reaction heating. The electric heating component is placed inside the installation cavity. The electric heating component consists of an electric heating container and a heat-conducting bag, which are movably connected.

2. The self-heating constant pressure infusion system according to claim 1, characterized in that, It also includes a pressurizing assembly, which includes a pressurizing element disposed in the mounting cavity. The pressurizing element has an expanded state and a contracted state. When the pressurizing element is in the expanded state, the pressurizing element can apply pressure to the infusion bag through its own expansion. The pressurizing component and the heating component are located on both sides of the infusion bag.

3. The self-heating constant pressure infusion system according to claim 2, characterized in that, The heating assembly includes a material layer and an oxygen layer. The pressurizing component, the infusion bag, the material layer, and the oxygen layer are arranged sequentially from top to bottom. A pressure needle is provided on the side of the material layer facing the oxygen layer. When the pressurizing component applies pressure to the infusion bag, the pressure needle punctures the oxygen layer, causing the material in the material layer to react with the oxygen and generate heat to automatically heat the infusion bag. Alternatively, the heating assembly includes a material layer and a solution layer, with the pressurizing element, the infusion bag, the material layer, and the solution layer arranged sequentially from top to bottom; the material layer has a pressure needle on the side facing the solution layer, and when the pressurizing element applies pressure to the infusion bag, the pressure needle punctures the solution layer, causing the material in the material layer to react with the leaked solution and generate heat to automatically heat the infusion bag.

4. The self-heating constant pressure infusion system according to claim 2, characterized in that, The pressurizing assembly also includes a pressure plate, which is slidably connected to the inner wall of the infusion tank and is located between the pressurizing component and the infusion bag.

5. The self-heating constant pressure infusion system according to claim 2, characterized in that, The pressurizing component is an airbag. The pressurizing assembly also includes an inflation hose and an inflation component. One end of the inflation hose is connected to the airbag, and the other end of the inflation hose extends out of the infusion box and is connected to the inflation component. The inflation component inflates the airbag through the inflation hose.

6. The self-heating constant-pressure infusion system according to any one of claims 1 to 5, characterized in that, The enclosure includes an outer shell and an inner liner frame disposed inside the outer shell. The inner liner frame and the outer shell are spaced apart to form a vacuum cavity, and the mounting cavity is enclosed by the inner liner frame; or the enclosure is a hollow inner cavity type vacuum enclosure.

7. The self-heating constant pressure infusion system according to claim 6, characterized in that, One end of the infusion bag is connected to an infusion tube, and the end of the infusion tube away from the infusion bag is connected to an infusion needle. The housing is provided with a through hole for the infusion tube to pass through, and the through hole passes through the outer shell of the housing and the inner lining frame of the housing in sequence. The self-heating constant pressure infusion system also includes a sealing adjustment device, which includes multiple fixing plates. The multiple fixing plates are evenly distributed on the outer wall of the housing at the positions corresponding to the through hole.

8. The self-heating constant pressure infusion system according to claim 7, characterized in that, Each of the fixing plates includes a fixing part and a connecting part connected to the fixing part. The fixing part is fixedly connected to the outer shell, and the connecting part is slidably connected to a fixing frame. The fixing frame is arc-shaped, and the number of fixing frames is the same as the number of fixing plates and they are arranged in a one-to-one correspondence.

9. The self-heating constant pressure infusion system according to claim 8, characterized in that, Each of the fixed frames has a connecting plate connected to one end away from the connecting part. The number of connecting plates is the same as the number of fixed frames and they are arranged in a one-to-one correspondence. Each connecting plate extends in a direction away from the outer wall of the outer shell. The outer side of each connecting plate is threadedly connected to the same fixed bushing. A sealing plate is fixedly connected to each connecting plate. The sealing plate extends in a direction away from the outer wall of the outer shell.

10. The self-heating constant-pressure infusion system according to claim 9, characterized in that, The number of sealing plates is the same as the number of connecting plates and they are arranged in a one-to-one correspondence. The inner wall of the sealing plate abuts against the outer wall of the infusion tube.

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