Portable infusion device

Abstract

The invention provides a portable infusion device and belongs to the field of infusion device.The portable infusion device comprises a shell and a liquid medicine bin, a protective cover is arranged on the outer side wall of the shell, the protective cover and the shell are clamped and slidably arranged, an operation indicator lamp is arranged on the inner side of the shell, a pressing plate is fixedly connected to the inner side wall of the protective cover, and a fixing base is fixedly connected to the inner side wall of the shell; an embedding plate is arranged on the fixing seat in an embedded mode, a piercing device is fixedly connected to the embedding plate, and the infusion apparatus further comprises a flow stopping assembly which is arranged on the inner side of the shell and used for controlling circulation and interruption of liquid medicine in the infusion tube; the control assembly is arranged on the inner side of the shell, and the control assembly is used for controlling the running state of the device; the pressurizing assembly is located on the inner side of the shell, and the pressurizing assembly is used for controlling the flowing speed of liquid medicine during infusion, by means of the mode of being worn on the arm, limitation of the infusion device to the position of a user is avoided, and the convenience of the user in using the device is improved.

Description

Technical Field

[0001] The present invention relates to the field of infusion devices, and in particular to a portable infusion device. Background Art

[0002] Infusion, also known as intravenous drip or intravenous infusion, is a common medical treatment. During the infusion process, medical staff will first disinfect the patient's skin, and then insert a thin infusion needle into the patient's vein, usually a superficial vein in the hand, arm or dorsum of the foot. One end of the infusion tube is connected to the infusion needle, and the other end is connected to the infusion bottle or infusion bag containing the medicine. The medicine flows slowly into the patient's body at a specific speed through gravity or the control of an infusion pump.

[0003] Many existing infusion devices mainly use gravity to achieve the infusion of liquid medicine. In the gravity-based infusion device, the infusion bottle or infusion bag needs to be hung at a certain height, and the gravitational potential energy of the liquid itself is converted into kinetic energy, so that the liquid medicine flows into the patient's vein through the infusion tube. Generally speaking, the infusion bottle or infusion bag needs to be hung on a special infusion stand, and a certain height difference must be maintained to ensure that the liquid medicine is infused at a suitable speed. Usually this height is a certain distance higher than the patient's puncture site to ensure that there is enough pressure to push the liquid medicine into the blood vessel. This results in the patient being restricted to move around the infusion stand during the infusion process. For patients who need to move frequently, such as walking around the ward, going for examinations, etc., this fixed position infusion device will bring many inconveniences. Patients may need family members or nurses to help carry the infusion stand with them, which not only increases the burden on others, but also requires them to pay attention to the status of the infusion device at all times during the movement to prevent the infusion tube from being pulled and the infusion bottle from shaking too much.

[0004] How to invent a portable infusion device to improve these problems has become an urgent problem to be solved by those skilled in the art. Summary of the invention

[0005] In order to make up for the above shortcomings, the present invention provides a portable infusion device, aiming to improve the problems mentioned in the above background.

[0006] The present invention is achieved in that: The present invention provides a portable infusion device, comprising a shell and a liquid medicine tank, wherein the outer wall of the shell is provided with a protective cover, the protective cover is snap-fitted with the shell and slidably arranged, the inner side of the shell is provided with an operation indicator light, the inner side wall of the protective cover is fixedly connected with a pressure plate, the inner side wall of the shell is fixedly connected with a fixing seat, the fixing seat is embedded with a fitting plate, the fitting plate is fixedly connected with a piercer, the end of the piercer is fixedly sleeved with an infusion tube, and further comprising: A flow-stop component, which is arranged on the inner side of the housing and is used to control the flow and interruption of the liquid medicine in the infusion tube; A control component, which is arranged on the inner side of the housing and is used to control the operating state of the device; A pressurizing component is located on the inner side of the shell and is used to control the flow rate of the liquid medicine during infusion.

[0007] Preferably, the piercer is located on the inner side of the fixing seat, the infusion tube is provided with a drip bucket and an infusion needle, the outer shell is provided with a tube groove, the infusion tube is located on the inner side of the tube groove, the end of the outer shell is fixedly connected with a fixing sleeve, the fixing sleeve is provided with an adjusting nut, an adjusting spring is provided below the adjusting nut, the end of the adjusting spring is fixedly connected with a clamping ball, and the adjusting spring and the clamping ball are both located inside the fixing sleeve.

[0008] Preferably, the outer side wall of the medicine liquid bin is provided with a card slot, a groove is provided in the card slot, the contour of the groove is the same as the outer contour of the card ball, and the end of the medicine liquid bin is fixedly connected with a sealing layer, and the sealing layer is made of rubber.

[0009] Preferably, two connection seats are fixedly connected to the shell, and a hook surface sticker and a fleece surface sticker are fixedly connected to the two connection seats respectively.

[0010] Preferably, the flow-stop assembly includes a plurality of guide plates fixedly connected to the inner wall of the outer shell, the guide plates are fixedly provided with guide strips, a flow-stop block is provided between two opposite guide plates, the guide plates are slidably connected to the flow-stop blocks via the guide strips, the flow-stop blocks are provided in plurality and are located on both sides of the infusion tube, a push rod is provided inside the fixed seat, the ends of the push rod are provided at acute angles, bosses are fixedly connected on both sides of the push rod, thrust springs are fixedly connected to the ends of the bosses, the ends of the thrust springs are fixedly connected to the inner wall of the fixed seat, the push rod is slidably provided in the fixed seat, and the push rod penetrates the fixed seat.

[0011] Preferably, a one-way valve is fixedly connected to the inner side wall of the medicine liquid chamber, and the conical end of the piercer is located between the sealing layer and the one-way valve.

[0012] Preferably, the control assembly includes a control board fixedly connected to the inner wall of the housing, a microprocessor module, a switch and a plurality of flow control buttons are arranged on the top of the control board, and a buzzer is arranged on the bottom of the control board.

[0013] Preferably, a plurality of batteries are fixedly connected to the inner side wall of the shell, the batteries are electrically connected to the control board, and a fixing plate is fixedly connected to the inner side wall of the shell.

[0014] Preferably, the pressurizing assembly includes a motor fixedly connected to a fixed plate, the output end of the motor is transmission-connected to a planetary reducer, the output end of the planetary reducer is fixedly connected to a worm, the inner side wall of the outer shell is fixedly connected to a fixed shaft, the top end of the fixed shaft is rotatably connected to a turbine, the worm is meshed with the turbine, the inner side wall of the outer shell is fixedly connected to a guide rail, the inside of the guide rail is slidably connected to a pressurizing rod, the pressurizing rod is arranged in an arc shape, a helical rack is arranged on the side wall of the pressurizing rod, and the helical rack is meshed with the worm.

[0015] Preferably, the end of the pressure rod is fixedly connected to a booster block, a plug block is provided inside the medicine liquid tank, the outer wall of the plug block is provided with a sealing sleeve, the plug block and the inner wall of the medicine liquid tank are squeezed against the sealing sleeve, and a resistance heating plate is provided inside the side wall of the medicine liquid tank.

[0016] The beneficial effects of the present invention are: the device can be carried around, and the pressurization method allows the medicine liquid tank to be placed below the head for stable infusion, and the infusion tube is closer to the human body, reducing the chance of accidental pulling and greatly reducing the space required for infusion, thereby achieving the purpose of freer movement.

[0017] Through the action of separating the medicine liquid tank from the shell, the push rod moves away from the stop block under the elastic force of the thrust spring, so that the stop blocks are not restricted by the push rod and move closer to each other, squeezing the infusion tube between the two, so that the infusion tube is in a cut-off state, preventing the occurrence of "blood backflow". BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of a portable infusion device provided in an embodiment of the present invention; Figure 2 It is a schematic diagram of a pressure plate structure of a portable infusion device provided in an embodiment of the present invention; Figure 3 It is a schematic diagram of the structure of a mosaic plate of a portable infusion device provided in an embodiment of the present invention; Figure 4 It is a schematic diagram of the structure of a portable infusion device fixing base provided in an embodiment of the present invention; Figure 5 yes Figure 4 The enlarged view of point A in the middle; Figure 6 It is a schematic diagram of the cross-sectional structure of a portable infusion device fixing base provided in an embodiment of the present invention; Figure 7 It is a schematic diagram of a one-way valve structure of a portable infusion device provided in an embodiment of the present invention; Figure 8 It is a schematic diagram of the structure of a control panel of a portable infusion device provided in an embodiment of the present invention; Fig. 9 is a schematic diagram of a cross-sectional structure of a housing of a portable infusion device provided in an embodiment of the present invention; Fig.10 yes Fig. 9 The enlarged view of point B in the middle; Fig.11 It is a schematic diagram of the structure of a booster block of a portable infusion device provided in an embodiment of the present invention.

[0020] In the figure: 1, shell; 2, liquid medicine tank; 3, protective cover; 4, pressure plate; 5, fixed seat; 6, interlocking plate; 7, piercer; 8, infusion tube; 9, tube groove; 10, fixed sleeve; 11, adjusting nut; 12, adjusting spring; 13, card ball; 14, card groove; 15, sealing layer; 16, one-way valve; 18, connecting seat; 19, hook surface sticker; 20, wool surface sticker; 21, guide plate; 22, guide strip; 23, stop block; 24, push rod; 25, convex Table; 26, thrust spring; 27, extrusion spring; 31, control board; 32, microprocessor module; 33, operation indicator light; 34, switch; 35, flow control button; 36, battery; 37, fixed plate; 38, motor; 39, planetary reducer; 40, worm; 41, fixed shaft; 42, turbine; 43, guide rail; 44, pressure rod; 45, bevel rack; 46, booster block; 47, plug block; 48, sealing sleeve; 49, resistance heating plate. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example, see Figure 1-Figure 4A portable infusion device comprises a shell 1 and a liquid medicine tank 2. A protective cover 3 is provided on the outer wall of the shell 1. The protective cover 3 is snap-fitted and slidably arranged with the shell 1. An operation indicator light 33 is provided on the inner side of the shell 1. A pressure plate 4 is fixedly connected to the inner wall of the protective cover 3. A fixing seat 5 is fixedly connected to the inner wall of the shell 1. A fitting plate 6 is embedded on the fixing seat 5. A piercer 7 is fixedly connected to the fitting plate 6. An infusion tube 8 is fixedly sleeved on the end of the piercer 7. The portable infusion device also comprises: a flow stop component, which is arranged on the inner side of the shell 1 and is used to control the circulation and interruption of the liquid medicine in the infusion tube 8; a control component, which is arranged on the inner side of the shell 1 and is used to control the operation state of the device; a pressurizing component, which is located on the inner side of the shell 1 and is used to control the flow rate of the liquid medicine during infusion. The piercer 7 is located on the inner side of the fixing seat 5, the infusion tube 8 is provided with a drip bucket and an infusion needle, the outer shell 1 is provided with a tube groove 9, the infusion tube 8 is located on the inner side of the tube groove 9, the end of the outer shell 1 is fixedly connected with a fixing sleeve 10, the fixing sleeve 10 is provided with an adjusting nut 11, an adjusting spring 12 is provided below the adjusting nut 11, the end of the adjusting spring 12 is fixedly connected with a card ball 13, the adjusting spring 12 and the card ball 13 are both located inside the fixing sleeve 10, the outer side wall of the liquid medicine bin 2 is provided with a card groove 14, the card groove 14 is provided with a groove, the contour of the groove is the same as the outer contour of the card ball 13, the end of the liquid medicine bin 2 is fixedly connected with a sealing layer 15, the sealing layer 15 is made of rubber, the outer shell 1 is fixedly connected with two connecting seats 18, and the two connecting seats 18 are respectively fixedly connected with a hook surface sticker 19 and a wool surface sticker 20; It should be noted that the interlocking plate 6 is first embedded in the fixing seat 5, and the infusion tube 8 is placed between the two stopper blocks 23. The two stopper blocks 23 are brought closer to each other by the pressure of the extrusion spring 27, squeezing the infusion tube 8, causing the infusion tube 8 to deform, and its inner wall is in a fitted state, so that the liquid medicine cannot pass through. Then the infusion tube 8 is placed in the tube groove 9, and then the protective cover 3 is pushed so that the pressing plate 4 on the protective cover 3 presses the interlocking plate 6, so that the piercer 7 is fixed on the fixing seat 5, and the installation of the piercer 7 is completed; If the device is to be worn, the shell 1 is placed between the arm that needs infusion and the body, and the device is worn on the arm through the adhesion of the hook surface sticker 19 and the fleece surface sticker 20. After wearing, the medicine liquid tank 2 containing the medicine liquid is installed, and the two ends of the medicine liquid tank 2 are respectively embedded in the two ends of the shell 1. In this process, the sealing layer 15 at the end of the medicine liquid tank 2 is subjected to the pressure from the piercer 7 and is pierced by the piercer 7. At the same time, the sealing layer 15 squeezes the push rod 24, overcomes the elastic force of the thrust spring 26 on the push rod 24, and makes the push rod 24 move in the direction of the stop block 23. The end of the push rod 24 set at an acute angle applies a squeezing force to the two stop blocks 23, so that the two stop blocks 23 overcome the thrust of the squeezing spring 27 and move in opposite directions, and no longer squeeze the infusion tube 8, so that the infusion tube 8 is in a state where the medicine liquid can flow, and the installation of the medicine liquid tank 2 is completed; During the process of installing the medicine liquid tank 2 in the shell 1, the card slot 14 at the end of the medicine liquid tank 2 applies an extrusion force to the card ball 13 to compress the adjusting spring 12. When the installation of the medicine liquid tank 2 is completed, the card ball 13 is inserted into the medicine liquid tank 2, and the medicine liquid tank 2 is installed on the shell 1 by adjusting the thrust of the spring 12 to complete the installation of the medicine liquid tank 2; by rotating the adjusting nut 11, a preset elastic force is applied to the adjusting spring 12, and the pressure of the card ball 13 on the medicine liquid tank 2 can be adjusted to prevent the medicine liquid tank 2 from easily falling off the shell 1. Through the above-mentioned arrangement, during the process of installing the medicine liquid tank 2, the user wearing the device only needs to clamp the shell 1 with his arm to install the medicine liquid tank 2 with one hand. The card connection method also facilitates the installation and replacement of the medicine liquid tank 2, which is more convenient than the existing two-handed dressing change.

[0023] Reference Figure 4-Figure 7 The flow-stop assembly includes a plurality of guide plates 21 fixedly connected to the inner side wall of the shell 1, a guide strip 22 is fixedly arranged on the guide plate 21, a flow-stop block 23 is arranged between two opposite guide plates 21, the guide plate 21 is slidably connected to the flow-stop block 23 through the guide strip 22, the flow-stop block 23 is arranged in a plurality and is located on both sides of the infusion tube 8, a push rod 24 is arranged inside the fixed seat 5, the end of the push rod 24 is arranged at an acute angle, a boss 25 is fixedly connected to both sides of the push rod 24, a thrust spring 26 is fixedly connected to the end of the boss 25, and the end of the thrust spring 26 is fixedly connected to the inner side wall of the fixed seat 5, the push rod 24 is slidably arranged in the fixed seat 5, the push rod 24 is arranged to penetrate the fixed seat 5, a one-way valve 16 is fixedly connected to the inner side wall of the liquid medicine chamber 2, and the conical end of the piercer 7 is located between the sealing layer 15 and the one-way valve 16; It should be noted that when the medicine liquid tank 2 is replaced or falls off due to an accident, the medicine liquid tank 2 is separated from the outer shell 1, and the push rod 24 is no longer subjected to the pressure of the sealing layer 15. Under the elastic force of the thrust spring 26, the push rod 24 moves away from the stop block 23. The stop block 23 is no longer subjected to the squeezing force of the push rod 24. The two stop blocks 23 are subjected to the pressure of the squeezing spring 27, which squeezes the infusion tube 8 located between the two stop blocks 23, so that the infusion tube 8 is in a cut-off state to prevent the occurrence of "blood backflow".

[0024] Reference Figure 8-Figure 9 The control component includes a control board 31 fixedly connected to the inner wall of the shell 1, a microprocessor module 32, a switch 34 and a plurality of flow control buttons 35 are arranged on the top of the control board 31, a buzzer is arranged on the bottom of the control board 31, a plurality of batteries 36 are fixedly connected to the inner wall of the shell 1, the batteries 36 are electrically connected to the control board 31, and a fixing plate 37 is fixedly connected to the inner wall of the shell 1.

[0025] It should be noted that by pressing the switch 34, the device is started, and by setting a plurality of flow control buttons 35, the infusion flow rate is conveniently adjusted to adapt to a variety of infusion speeds. When the infusion is completed, the operation indicator light 33 flashes, and at the same time, the buzzer on the control panel 31 sounds an alarm to remind the user that the infusion is completed. Reference Figure 9-11 The pressurizing assembly includes a motor 38 fixedly connected to a fixed plate 37, the output end of the motor 38 is transmission-connected to a planetary reducer 39, the output end of the planetary reducer 39 is fixedly connected to a worm 40, the inner side wall of the shell 1 is fixedly connected to a fixed shaft 41, the top end of the fixed shaft 41 is rotatably connected to a turbine 42, the worm 40 is meshed with the turbine 42, the inner side wall of the shell 1 is fixedly connected to a guide rail 43, the inner side of the guide rail 43 is slidably connected to a pressurizing rod 44, the pressurizing rod 44 is arranged in an arc shape, a helical rack 45 is arranged on the side wall of the pressurizing rod 44, the helical rack 45 is meshed with the worm 40, the end of the pressurizing rod 44 is fixedly connected to a booster block 46, a plug block 47 is arranged inside the liquid medicine bin 2, the outer side wall of the plug block 47 is provided with a sealing sleeve 48, the plug block 47 and the inner side wall of the liquid medicine bin 2 are pressed against the sealing sleeve 48, and a resistance heating plate 49 is arranged inside the side wall of the liquid medicine bin 2.

[0026] It should be noted that by pressing the flow control button 35, the infusion process is started, the output end of the motor 38 rotates to drive the planetary reducer 39 to work, drive the worm 40 to rotate, drive the turbine 42 to rotate, and the turbine 42 engages with the bevel rack 45 to drive the pressure rod 44 to slide inside the guide rail 43. The pressure rod 44 pushes the plug block 47 and the sealing sleeve 48 to move in the direction of the one-way valve 16 through the booster block 46, and applies pressure to the medicine between the one-way valve 16 and the sealing sleeve 48. The medicine passes through the one-way valve 16 and enters the piercer 7, and then enters the infusion tube 8. The continuous rotation of the motor 38 provides a constant pressure for the medicine, which is conducive to accurately controlling the flow rate of the medicine.

[0027] It should be noted that, by arranging a resistance heating sheet 49 in the side wall of the medicine liquid tank 2, when the medicine liquid tank 2 is snapped into the outer shell 1, the resistance heating sheet 49 is connected to the battery 36, and the resistance heating wire 49 generates heat to heat up the medicine liquid tank 2, thereby preventing the temperature of the medicine from being too low during infusion in cold weather, ensuring that the medicine is delivered at an appropriate temperature, and improving the comfort of the user.

[0028] In this embodiment, the piercer 7 is first installed on the fixing seat 5, and then the device is worn on the arm by bonding the hook surface sticker 19 and the fleece surface sticker 20. After wearing, the drug liquid tank 2 containing the drug liquid is installed, and the device is started by pressing the switch 34, and then the flow control button 35 is pressed to start the infusion work, the motor 38 is started, and the plug 47 and the sealing sleeve 48 are pushed by the pressure rod 44 to pressurize the drug liquid, and the infusion process begins.

[0029] The device promotes the flow of liquid medicine by applying pressure, so that it can be used at a position lower than the human body. Compared with traditional infusion devices, it is not restricted by height. Compared with traditional infusion devices, the device is worn on the arm, which avoids the restrictions on the user's position by infusion devices. The user can also walk easily while in the infusion state, which improves the convenience of the user to use the device.

[0030] It should be noted that the specific model and specifications of the motor need to be selected and determined based on the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A portable infusion device, comprising a housing (1) and a liquid medicine chamber (2), wherein the outer wall of the housing (1) is provided with a protective cover (3), the protective cover (3) is snap-fitted with the housing (1) and is slidably arranged, an operation indicator light (33) is arranged on the inner side of the housing (1), a pressing plate (4) is fixedly connected to the inner wall of the protective cover (3), a fixing seat (5) is fixedly connected to the inner wall of the housing (1), a fitting plate (6) is embedded on the fixing seat (5), a piercer (7) is fixedly connected to the fitting plate (6), an infusion tube (8) is fixedly sleeved on the end of the piercer (7), characterized in that: Also includes: a flow-stop component, the flow-stop component being arranged on the inner side of the housing (1), the flow-stop component being used to control the flow and interruption of the drug solution in the infusion tube (8); A control component, the control component being arranged on the inner side of the housing (1), and being used to control the operating state of the device; A pressurizing component, the pressurizing component is located on the inner side of the housing (1), and the pressurizing component is used to control the flow rate of the drug solution during infusion.

2. A portable infusion device according to claim 1, characterized in that: The piercer (7) is located on the inner side of the fixing seat (5); the infusion tube (8) is provided with a dripping funnel and an infusion needle; the outer shell (1) is provided with a tube groove (9); the infusion tube (8) is located on the inner side of the tube groove (9); the end of the outer shell (1) is fixedly connected to a fixing sleeve (10); the fixing sleeve (10) is provided with an adjusting nut (11); an adjusting spring (12) is provided below the adjusting nut (11); the end of the adjusting spring (12) is fixedly connected to a locking ball (13); the adjusting spring (12) and the locking ball (13) are both located inside the fixing sleeve (10).

3. A portable infusion device according to claim 2, characterized in that: The outer wall of the liquid medicine bin (2) is provided with a slot (14), a groove is provided in the slot (14), the contour of the groove is the same as the outer contour of the locking ball (13), and a sealing layer (15) is fixedly connected to the end of the liquid medicine bin (2), and the sealing layer (15) is made of rubber.

4. A portable infusion device according to claim 1, characterized in that: The housing (1) is fixedly connected to two connection seats (18), and the two connection seats (18) are respectively fixedly connected to a hook surface sticker (19) and a fleece surface sticker (20).

5. A portable infusion device according to claim 1, characterized in that: The flow-stop assembly comprises a plurality of guide plates (21) fixedly connected to the inner side wall of the housing (1), a guide strip (22) being fixedly arranged on the guide plate (21), a flow-stop block (23) being arranged between two opposing guide plates (21), the guide plate (21) being slidably connected to the flow-stop block (23) via the guide strip (22), the flow-stop blocks (23) being arranged in plurality and being located on both sides of the infusion tube (8), and a plurality of extrusion springs being fixedly connected to the side walls of the flow-stop blocks (23). A spring (27) is provided inside the fixed seat (5), and the end of the push rod (24) is set at an acute angle. Bosses (25) are fixedly connected to both sides of the push rod (24), and the ends of the bosses (25) are fixedly connected to thrust springs (26). The ends of the thrust springs (26) are fixedly connected to the inner side wall of the fixed seat (5). The push rod (24) is slidably set in the fixed seat (5), and the push rod (24) penetrates the fixed seat (5).

6. A portable infusion device according to claim 2, characterized in that: A one-way valve (16) is fixedly connected to the inner side wall of the drug liquid chamber (2), and the conical end of the piercer (7) is located between the sealing layer (15) and the one-way valve (16).

7. A portable infusion device according to claim 1, characterized in that: The control assembly comprises a control panel (31) fixedly connected to the inner wall of the housing (1); a microprocessor module (32), a switch (34) and a plurality of flow control buttons (35) are arranged on the top of the control panel (31); and a buzzer is arranged on the bottom of the control panel (31).

8. A portable infusion device according to claim 7, characterized in that: A plurality of batteries (36) are fixedly connected to the inner side wall of the housing (1); the batteries (36) are electrically connected to the control board (31); and a fixing plate (37) is fixedly connected to the inner side wall of the housing (1).

9. A portable infusion device according to claim 8, characterized in that: The pressurizing assembly comprises a motor (38) fixedly connected to a fixing plate (37); an output end of the motor (38) is drivingly connected to a planetary reducer (39); an output end of the planetary reducer (39) is fixedly connected to a worm (40); an inner side wall of the housing (1) is fixedly connected to a fixing shaft (41); a top end of the fixing shaft (41) is rotatably connected to a turbine (42); the worm (40) is meshingly arranged with the turbine (42); a guide rail (43) is fixedly connected to the inner side wall of the housing (1); a pressurizing rod (44) is slidably connected inside the guide rail (43); the pressurizing rod (44) is arranged in an arc shape; a helical rack (45) is arranged on the side wall of the pressurizing rod (44); the helical rack (45) is meshingly arranged with the worm (40).

10. A portable infusion device according to claim 9, characterized in that: The end of the pressure rod (44) is fixedly connected to a booster block (46), a plug block (47) is arranged inside the liquid medicine chamber (2), an outer wall of the plug block (47) is provided with a sealing sleeve (48), the plug block (47) and the inner wall of the liquid medicine chamber (2) are pressed against the sealing sleeve (48), and a resistance heating plate (49) is arranged inside the side wall of the liquid medicine chamber (2).

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