A portable infusion device

Abstract

The present invention provides a portable infusion device, which belongs to the field of infusion devices and includes a shell and a medicine liquid tank. The outer wall of the shell is provided with a protective cover, which is snap-connected to 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 to a pressure plate, and the inner side wall of the shell is fixedly connected to a fixing seat. A mosaic plate is embedded on the fixing seat, and a piercer is fixedly connected to the mosaic plate. The device also includes: a flow stop component, which is arranged on the inner side of the shell and is used to control the circulation and interruption of the medicine liquid in the infusion tube; a control component, which is arranged on the inner side of the shell and is used to control the operating state of the device; and a pressurizing component, which is located on the inner side of the shell and is used to control the flow rate of the medicine liquid during infusion. This invention avoids the restriction of the infusion device on the user's position by wearing it on the arm, thereby improving the convenience of the user in using the device.

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 an IV drip or intravenous drip, is a common medical treatment. During an infusion, medical staff first disinfect the patient's skin. A thin needle is then inserted into a vein, typically a superficial vein in the hand, arm, or dorsum of the foot. One end of the infusion tube is connected to the needle, and the other end is connected to an infusion bottle or bag containing the medication. The medication flows slowly into the patient's body at a specific rate, either through gravity or controlled by an infusion pump.

[0003] Many existing infusion devices primarily rely on gravity to deliver medication. In these gravity-based devices, the infusion bottle or bag must be suspended at a certain height. The gravitational potential energy of the liquid is converted into kinetic energy, allowing the medication to flow through the IV tube into the patient's veins. Generally, the bottle or bag must be hung on a dedicated IV stand at a certain height difference to ensure the appropriate infusion rate. This height difference is typically a certain distance above the patient's puncture site to ensure sufficient pressure to push the medication into the blood vessels. This restricts patients from moving around the IV stand during the infusion process. For patients who need to move frequently, such as walking around the hospital room or getting examinations, this fixed-position infusion device can be inconvenient. Patients may need family members or nurses to carry the IV stand, which not only increases the burden on others but also requires constant monitoring of the infusion system during movement to prevent the IV tube from being pulled or the bottle from shaking excessively.

[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 deficiencies, 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:

[0007] The present invention provides a portable infusion device, comprising a housing and a liquid medicine tank, wherein the outer wall of the housing is provided with a protective cover, the protective cover being snap-engaged and slidably arranged with the housing, an operation indicator light being provided on the inner side of the housing, a pressure plate being fixedly connected to the inner side wall of the protective cover, a fixing seat being fixedly connected to the inner side wall of the housing, a fitting plate being embedded in the fixing seat, a piercer being fixedly connected to the fitting plate, an infusion tube being fixedly sleeved on the end of the piercer, and further comprising:

[0008] A flow-stop assembly, which is disposed on the inner side of the housing and is used to control the flow and interruption of the liquid medicine in the infusion tube;

[0009] A control component is disposed inside the housing and is used to control the operating state of the device;

[0010] 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.

[0011] 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 shell is provided with a tube groove, the infusion tube is located on the inner side of the tube groove, the end of the shell is fixedly connected to a fixing sleeve, an adjusting nut is provided on the fixing sleeve, an adjusting spring is provided below the adjusting nut, the end of the adjusting spring is fixedly connected to a card ball, and the adjusting spring and the card ball are both located inside the fixing sleeve.

[0012] Preferably, the outer wall of the medicine liquid tank is provided with a card slot, and a groove is provided in the card slot. The contour of the groove is the same as the outer contour of the card ball. The end of the medicine liquid tank is fixedly connected with a sealing layer, and the sealing layer is made of rubber.

[0013] Preferably, two connecting seats are fixedly connected to the shell, and the two connecting seats are respectively fixedly connected to a hook surface sticker and a loop surface sticker.

[0014] Preferably, the flow-stop assembly includes a plurality of guide plates fixedly connected to the inner wall of the outer shell, a guide bar is fixedly provided on the guide plate, a flow-stop block is provided between two opposite guide plates, the guide plate is slidably connected to the flow-stop block via the guide bar, 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 end of the push rod is provided at an acute angle, both sides of the push rod are fixedly connected with a boss, the end of the boss is fixedly connected with a thrust spring, the end of the thrust spring is fixedly connected to the inner wall of the fixed seat, the push rod is slidably provided in the fixed seat, and the push rod is provided through the fixed seat.

[0015] Preferably, a one-way valve is fixedly connected to the inner side wall of the medicine liquid tank, and the tapered end of the piercer is located between the sealing layer and the one-way valve.

[0016] Preferably, the control assembly includes a control board fixedly connected to the inner side wall of the housing, a microprocessor module, a switch and a plurality of flow control buttons are provided on the top of the control board, and a buzzer is provided on the bottom of the control board.

[0017] 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.

[0018] 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 shell is fixedly connected to a fixed shaft, the top end of the fixed shaft is rotatably connected to a worm gear, the worm and the worm gear are meshed, the inner side wall of the shell is fixedly connected to a guide rail, the inner side of the guide rail is slidingly connected to a pressurizing rod, the pressurizing rod is arranged in an arc shape, and a helical rack is arranged on the side wall of the pressurizing rod, and the helical rack is meshed with the worm.

[0019] Preferably, the end of the pressure rod is fixedly connected to a booster block, a plug is provided inside the medicine liquid tank, the outer wall of the plug is provided with a sealing sleeve, the plug 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.

[0020] The beneficial effects of the present invention are: the device can be carried around, and the pressurization method allows the liquid medicine tank to be placed below the head for stable infusion. The infusion tube is also 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.

[0021] Through the action of separating the medicine liquid tank from the shell, the push rod moves away from the flow-stop block under the elastic force of the thrust spring, so that the flow-stop blocks are closer to each other because they are not restricted by the push rod, squeezing the infusion tube located between the two, putting the infusion tube in a cut-off state, and preventing the occurrence of "blood backflow". BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of a portable infusion device provided by an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of a pressure plate of a portable infusion device provided by an embodiment of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of a mosaic plate of a portable infusion device provided by an embodiment of the present invention;

[0026] Figure 4 This is a schematic structural diagram of a portable infusion device fixing base provided by an embodiment of the present invention;

[0027] Figure 5 yes Figure 4 Enlarged view of point A in the middle;

[0028] Figure 6 This is a schematic cross-sectional view of a portable infusion device fixing base provided by an embodiment of the present invention;

[0029] Figure 7 A schematic diagram of the structure of a one-way valve of a portable infusion device according to an embodiment of the present invention;

[0030] Figure 8 This is a schematic structural diagram of a control panel of a portable infusion device provided in an embodiment of the present invention;

[0031] Figure 9 1 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;

[0032] Figure 10 yes Figure 9 Enlarged view of point B in the middle;

[0033] Figure 11 It is a schematic diagram of the structure of a booster block of a portable infusion device provided by an embodiment of the present invention.

[0034] In the figure: 1, housing; 2, liquid medicine tank; 3, protective cover; 4, pressure plate; 5, fixing seat; 6, interlocking plate; 7, piercer; 8, infusion tube; 9, tube groove; 10, fixing 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, flow stop block; 24, push rod; 25, convex Platform; 26. Thrust spring; 27. Extrusion spring; 31. Control panel; 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. Worm gear; 43. Guide rail; 44. Pressure rod; 45. Bevel rack; 46. Boost block; 47. Block; 48. Sealing sleeve; 49. Resistance heating plate. DETAILED DESCRIPTION

[0035] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0036] Example, refer to Figure 1-Figure 4 , a portable infusion device includes a shell 1 and a medicine liquid tank 2, the outer wall of the shell 1 is provided with a protective cover 3, the protective cover 3 is snap-fitted and slidably arranged with the shell 1, the inner side of the shell 1 is provided with an operation indicator light 33, the inner side wall of the protective cover 3 is fixedly connected to a pressure plate 4, the inner side wall of the shell 1 is fixedly connected to a fixing seat 5, the fixing seat 5 is embedded with a mosaic plate 6, the mosaic plate 6 is fixedly connected to a piercer 7, the end of the piercer 7 is fixedly sleeved with an infusion tube 8, and also includes: a flow stop component, the flow stop component is arranged on the inner side of the shell 1, the flow stop component is used to control the circulation and interruption of the medicine liquid in the infusion tube 8; the control component is arranged on the inner side of the shell 1, the control component is used to control the operating state of the device; the pressurizing component, the pressurizing component is located on the inner side of the shell 1, the pressurizing component is used to control the flow rate of the medicine liquid during infusion. , the puncture device 7 is located on the inner side of the fixed seat 5, the infusion tube 8 is provided with a drip bucket and an infusion needle, the 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 shell 1 is fixedly connected to a fixing sleeve 10, an adjusting nut 11 is provided on the fixing sleeve 10, an adjusting spring 12 is provided below the adjusting nut 11, the end of the adjusting spring 12 is fixedly connected to a card ball 13, the adjusting spring 12 and the card ball 13 are both located inside the fixed sleeve 10, the outer side wall of the medicine liquid tank 2 is provided with a card groove 14, a groove is provided in the card groove 14, the contour of the groove is the same as the outer contour of the card ball 13, the end of the medicine liquid tank 2 is fixedly connected with a sealing layer 15, the sealing layer 15 is made of rubber, two connecting seats 18 are fixedly connected to the shell 1, and the two connecting seats 18 are respectively fixedly connected with a hook surface sticker 19 and a wool surface sticker 20;

[0037] It should be noted that the interlocking plate 6 is first inserted into the fixing seat 5, and the infusion tube 8 is placed between the two stopper blocks 23. The two stopper blocks 23 are moved 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 side 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 pressure plate 4 on the protective cover 3 presses the interlocking plate 6, so that the puncture device 7 is fixed to the fixing seat 5, and the installation of the puncture device 7 is completed.

[0038] 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 by gluing 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, overcoming the elastic force of the thrust spring 26 on the push rod 24, so that the push rod 24 moves in the direction of the stop block 23. The end of the push rod 24 set at an acute angle exerts a squeezing force on 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, no longer squeezing 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;

[0039] 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 extruding force to the card ball 13, compressing the adjusting spring 12. When the installation of the medicine liquid tank 2 is completed, the card ball 13 is locked into the medicine liquid tank 2, and the thrust of the adjusting spring 12 is adjusted to install the medicine liquid tank 2 on the shell 1, completing 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 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.

[0040] Reference Figure 4-Figure 7 The flow-stop assembly includes a plurality of guide plates 21 fixedly connected to the inner wall of the shell 1, and a guide strip 22 is fixedly provided on the guide plate 21. A flow-stop block 23 is provided between the two opposite guide plates 21, and the guide plate 21 is slidably connected to the flow-stop block 23 through the guide strip 22. The flow-stop block 23 is provided in multiple arrangements and is located on both sides of the infusion tube 8. A push rod 24 is provided inside the fixed seat 5, and the end of the push rod 24 is provided at an acute angle. Bosses 25 are fixedly connected to both sides of the push rod 24, and the end of the boss 25 is fixedly connected to a thrust spring 26. The end of the thrust spring 26 is fixedly connected to the inner wall of the fixed seat 5. The push rod 24 is slidably provided in the fixed seat 5, and the push rod 24 is provided to penetrate the fixed seat 5. A one-way valve 16 is fixedly connected to the inner wall of the liquid medicine chamber 2, and the tapered end of the piercer 7 is located between the sealing layer 15 and the one-way valve 16;

[0041] It should be noted that when the medicine liquid tank 2 is replaced or the medicine liquid tank 2 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 in the direction away from the stop block 23, and 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".

[0042] 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 multiple flow control buttons 35 are provided on the top of the control board 31, a buzzer is provided on the bottom of the control board 31, multiple 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.

[0043] It should be noted that by pressing the switch 34, the device is started, and by setting multiple flow control buttons 35, the infusion flow rate can be easily adjusted to adapt to various infusion speeds. When the infusion is completed, the running indicator light 33 flashes, and the buzzer on the control panel 31 sounds an alarm to remind the user that the infusion is completed.

[0044] Reference Figures 9-11 The pressurizing assembly includes a motor 38 fixedly connected to the 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 worm gear 42, the worm 40 is meshed with the worm gear 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 provided 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 provided inside the liquid medicine tank 2, the outer 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 tank 2 are squeezed against the sealing sleeve 48, and a resistance heating plate 49 is provided in the side wall of the liquid medicine tank 2.

[0045] 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, and drive the worm gear 42 to rotate. The worm gear 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 toward the direction of the one-way valve 16 through the booster block 46, applying pressure to the liquid medicine between the one-way valve 16 and the sealing sleeve 48. The liquid medicine passes through the one-way valve 16 into the puncture device 7, and then enters the infusion tube 8. The continuous rotation of the motor 38 provides a constant pressure for the liquid medicine, which is conducive to accurately controlling the flow rate of the liquid medicine.

[0046] 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 medicine temperature 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.

[0047] In this embodiment, the piercer 7 is first mounted on the fixing base 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. Then, the flow control button 35 is pressed to start the infusion operation, and the motor 38 is started. The pressure rod 44 pushes the plug 47 and the sealing sleeve 48 to pressurize the drug liquid, and the infusion process begins.

[0048] 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 of infusion devices on the user's position. The user can also walk easily while using the infusion state, which improves the convenience of the user to use the device.

[0049] 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.

[0050] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A portable infusion device, comprising a shell (1) and a liquid medicine tank (2), wherein the outer wall of the shell (1) is provided with a protective cover (3), the protective cover (3) is snap-fitted with the shell (1) and slidably arranged, an operating indicator light (33) is provided on the inner side of the shell (1), a pressure plate (4) is fixedly connected to the inner side wall of the protective cover (3), a fixing seat (5) is fixedly connected to the inner side wall of the shell (1), a fitting plate (6) is embedded in 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), and the invention is characterized in that: Also includes: A flow-stop component, the flow-stop component being arranged on the inner side of the housing (1), and the flow-stop component being used to control the flow and interruption of the liquid medicine in the infusion tube (8); A control component, the control component being arranged on the inner side of the housing (1), and the control component being used to control the operating state of the device; A pressurizing component, the pressurizing component is located inside the housing (1), and the pressurizing component is used to control the flow rate of the liquid medicine during infusion. The flow-stop assembly comprises a plurality of guide plates (21) fixedly connected to the inner side wall of the housing (1), a guide bar (22) fixedly provided on the guide plate (21), a flow-stop block (23) provided between two opposing guide plates (21), the guide plate (21) being slidably connected to the flow-stop block (23) via the guide bar (22), the flow-stop block (23) being provided in a plurality and being located on both sides of the infusion tube (8), and a plurality of extrusion springs fixedly connected to the side wall of the flow-stop block (23) A spring (27) is provided inside the fixing seat (5), and a push rod (24) is provided at an acute angle at the end of the push rod (24). 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 fixing seat (5). The push rod (24) is slidably provided in the fixing seat (5), and the push rod (24) is provided to penetrate the fixing seat (5).

2. A portable infusion device according to claim 1, characterized in that: The puncture device (7) is located on the inner side of the fixing seat (5); the infusion tube (8) is provided with a drip chamber and an infusion needle; the housing (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 housing (1) is fixedly connected to a fixing sleeve (10); an adjusting nut (11) is provided on the fixing sleeve (10); 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 card slot (14), a groove is provided in the card slot (14), and 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), and the sealing layer (15) is made of rubber.

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

5. The portable infusion device according to claim 3, characterized in that: 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).

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

7. The portable infusion device according to claim 6, 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).

8. The portable infusion device according to claim 7, characterized in that: The pressurizing assembly includes a motor (38) fixedly connected to a fixed plate (37), an output end of the motor (38) is transmission-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 fixed shaft (41), a top end of the fixed shaft (41) is rotatably connected to a worm gear (42), the worm (40) is meshed with the worm gear (42), an inner side wall of the housing (1) is fixedly connected to a guide rail (43), an inner portion 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), and the helical rack (45) is meshed with the worm gear (40).

9. The portable infusion device according to claim 8, characterized in that: The end of the pressure rod (44) is fixedly connected to a booster block (46), a plug block (47) is provided 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 provided inside the side wall of the liquid medicine chamber (2).

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