Infusion bottle replacing device and control method

Abstract

The invention relates to the technical field of infusion devices, and discloses an infusion bottle replacing device and a control method. The lifting mechanism comprises a mounting frame mounted on the base and a driving assembly mounted on the mounting frame; a lifting table is arranged on the driving assembly; the rotating mechanism is mounted on the mounting frame and is provided with a rotating disc; the infusion bottle placing mechanism is mounted on the turntable and is provided with a plurality of cavities; the mechanical claw is installed on the lifting table and located below the rotating mechanism, and the mechanical claw can clamp a puncture needle of the infusion apparatus; the monitoring mechanism is used for monitoring the flow rate of liquid in the infusion apparatus; and the controller is electrically connected with the lifting mechanism, the rotating mechanism, the mechanical claw and the monitoring mechanism. By arranging the controller, the lifting mechanism, the rotating mechanism, the mechanical claw and the monitoring mechanism, the purpose of automatically replacing infusion bottles can be achieved, and the problem that the infusion bottles cannot be replaced in time due to omission of manual supervision is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of infusion devices, and particularly relates to an infusion bottle replacement device and a control method therefor. Background Art

[0002] Infusion, as a commonly used clinical treatment method, is a medical operation of injecting a large dose of liquid medicine into the body through intravenous drip.

[0003] With the increase in the number of patients seeking medical treatment, the workload of nurses has increased significantly. Most patients need to receive 2-3 bottles of liquid medicine during a single infusion. The traditional manual medicine bottle replacement mode has the following significant safety hazards. If the medicine bottle is not replaced in time, blood reflux may occur due to the pressure in the bottle being lower than the venous pressure. After blood reflux, if the bottle is not replaced in time, air will enter the infusion set. Then, the air will enter the blood vessel through the infusion set. If a small amount of air enters the blood vessel, there are usually no serious consequences. However, if a large amount of air enters the blood vessel, it may cause acute circulatory disorders and even fatal risks such as cardiac arrest.

[0004] Currently, traditional floor-standing infusion stands are commonly used in medical institutions. When using a floor-standing infusion stand to infuse a patient, manual bottle replacement is required, and there will be a problem of oversight in supervision during manual bottle replacement. When the bottle cannot be replaced in time, there is a risk of causing medical accidents. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention provides an infusion bottle replacement device and a control method therefor.

[0006] The present invention provides an infusion bottle replacement device, including: a base; a lifting mechanism, including a mounting frame installed on the base and a driving component installed on the mounting frame; the driving component has a lifting table capable of lifting in the vertical direction; a rotating mechanism, installed on the mounting frame and having a turntable capable of rotating in the horizontal plane; an infusion bottle placement mechanism, installed on the turntable and having a plurality of cavities capable of placing infusion bottles; the infusion bottle placement mechanism can rotate under the drive of the turntable; a mechanical claw, installed on the lifting table and located below the rotating mechanism, and the mechanical claw can hold the puncture needle of the infusion set; the mechanical claw holding the puncture needle can, under the drive of the lifting table, pierce into or pull out the puncture needle from the infusion bottle; a monitoring mechanism, used to monitor the liquid flow rate in the infusion set; a controller, electrically connected to the lifting mechanism, the rotating mechanism, the mechanical claw, and the monitoring mechanism respectively.

[0007] Optionally, the driving component includes a first motor electrically connected to the controller, and a lead screw vertically arranged and connected to the output shaft of the first motor; the first motor is installed at the bottom end of the mounting frame, and the top end of the lead screw is rotatably installed on the mounting frame; the lifting table is threadedly connected to the lead screw, and a sliding member is installed on the lifting table; a vertically arranged chute one is provided on the mounting frame, and the sliding member is slidably arranged in the chute one.

[0008] Optionally, the rotating mechanism includes a bracket fixed to the mounting frame, a stepper motor mounted on the bracket, a turntable mounted on the output shaft of the stepper motor, and the stepper motor is electrically connected to the controller.

[0009] Optionally, the monitoring mechanism includes an electromagnetic flow sensor capable of monitoring the liquid flow rate in the infusion set. The electromagnetic flow sensor is mounted on the lifting platform and is electrically connected to the controller.

[0010] Optionally, the infusion bottle placement mechanism includes a plurality of housings all mounted on the turntable. Each housing has an opening at the top, each housing has a cavity capable of accommodating an infusion bottle, each housing has an opening at the bottom capable of extending out the infusion bottle cap, and the bottom of each opening penetrates through the turntable.

[0011] Optionally, long slots are provided on both opposite sides of the housing side wall. The top of each long slot communicates with the opening at the top of the housing; a limiting plate is slidably arranged in the housing. Both opposite ends of the limiting plate have extending ends, and the two extending ends extend out of the housing from the corresponding long slots. An arc-shaped member is rotatably connected to each extending end; a plurality of jacks are arranged at intervals on the housing side wall; when the limiting plate and the arc-shaped member move to the corresponding height together, rotate the arc-shaped member to insert one end of the arc-shaped member into the corresponding jack to limit the limiting plate at the corresponding height.

[0012] Optionally, the number of the housings is four.

[0013] Optionally, the mechanical claw includes a mounting member mounted on the lifting platform, a second motor mounted on the mounting member. A connecting rod assembly is mounted on the output shaft of the second motor. Both opposite ends of the connecting rod assembly are connected with clamping arms; one end of the clamping arm is a clamping end, and the other end is provided with a second chute and is connected to the connecting rod assembly. The clamping arm is slidably connected to one end of the mounting member through the second chute; drive the second motor to drive the connecting rod assembly so that the two clamping arms approach or move away from each other.

[0014] Optionally, the connecting rod assembly includes a first connecting rod. The central position of the first connecting rod is connected to the output shaft of the second motor; at both ends of the first connecting rod in its length direction, an arc-shaped second connecting rod is respectively rotatably connected. The end of the second connecting rod far from the first connecting rod is rotatably connected to the end of the clamping arm provided with the second chute.

[0015] In a second aspect, a control method for an infusion bottle replacement device is provided, which is executed by a controller and includes: Step 1: Obtain and save the number of infusion bottles to be infused, and the number of infusion bottles to be infused is denoted as a; Step 2: Control the mechanical claw to grab the puncture needle of the infusion set; Step 3: Control the lifting platform of the lifting mechanism to move upward, and insert the puncture needle of the infusion set into the bottom of the infusion bottle; Step 4: Receive the monitoring value real-time monitored by the electromagnetic flow velocity sensor. When the monitoring value is less than the preset value, it indicates that the current infusion bottle is about to finish infusion; and control the lifting platform of the lifting mechanism to move downward, and pull out the puncture needle of the infusion set from the bottom of the infusion bottle. Step 5: Save the number of infusion bottles that have completed infusion. The number of infusion bottles that have completed infusion is denoted as b. When b < a, control the turntable of the rotating mechanism to rotate a preset angle, and repeat Steps 3 to 5 until b = a, then complete the current infusion. Step 6: Control the alarm to give an alarm.

[0016] The technical solution provided by the embodiment of the present invention has the following advantages compared with the prior art: By setting a monitoring mechanism in the present invention to monitor the infusion flow rate of the infusion set, when the monitoring value of the monitoring mechanism is less than the preset value, it indicates that the current infusion bottle is about to finish infusion. The controller controls the mechanical claw clamping the puncture needle to move downward, pulls out the puncture needle from the infusion bottle, and then the controller controls the rotating mechanism to rotate the infusion bottle to be infused to the directly above the puncture needle, and then the controller controls the lifting mechanism to insert the puncture needle on the mechanical claw into the bottom of the infusion bottle to be infused, so as to achieve the purpose of automatic bottle replacement of the infusion bottle, and solve the problem that the infusion bottle cannot be replaced in time due to the oversight of manual supervision. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of an infusion bottle replacement device provided by an embodiment of the present invention.

[0018] Figure 2 It is a schematic structural diagram of the lifting mechanism provided by an embodiment of the present invention.

[0019] Figure 3 It is a schematic structural diagram of the rotating mechanism provided by an embodiment of the present invention.

[0020] Figure 4 It is a schematic structural diagram of the mechanical claw provided by an embodiment of the present invention.

[0021] Description of the Reference Numerals: 1. Base; 2. Lifting mechanism; 21. Mounting frame; 22. Lifting platform; 23. First motor; 24. Lead screw; 25. Sliding member; 26. First chute; 3. Rotating mechanism; 31. Turntable; 32. Bracket; 33. Stepper motor; 4. Infusion bottle placement mechanism; 41. Housing; 42. Long slot; 43. Limiting plate; 44. Extended end; 45. Arc-shaped member; 46. Insertion hole; 5. Mechanical claw; 51. Mounting member; 52. Second motor; 53. Clamping arm; 54. Second chute; 55. First connecting rod; 56. Second connecting rod. Detailed Embodiments

[0022] The following will describe in detail a specific embodiment of the present invention in conjunction with the accompanying drawings. It should be understood that the protection scope of the present invention is not limited by the specific embodiment.

[0023] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the technical solution of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0024] Embodiment 1: As Figure 1 shown, the embodiment of the present invention provides an infusion bottle replacement device, including: a base 1; a lifting mechanism 2, including a mounting frame 21 installed on the base 1 and a driving component installed on the mounting frame 21; the driving component has a lifting platform 22 that can be lifted in the vertical direction; a rotating mechanism 3, installed on the mounting frame 21, having a turntable 31 that can rotate in the horizontal plane; an infusion bottle placement mechanism 4, installed on the turntable 31, having a plurality of cavities for setting infusion bottles; the infusion bottle placement mechanism 4 can rotate driven by the turntable 31; a mechanical claw 5, installed on the lifting platform 22 and located below the rotating mechanism 3, and the mechanical claw 5 can clamp the puncture needle of the infusion set; the mechanical claw 5 clamping the puncture needle can, driven by the lifting platform 22, insert or pull out the puncture needle from the infusion bottle; a monitoring mechanism for monitoring the liquid flow rate in the infusion set; a controller, electrically connected to the lifting mechanism 2, the rotating mechanism 3, the mechanical claw 5, and the monitoring mechanism respectively.

[0025] In this embodiment, the bottom of the mounting frame 21 has a sleeve, and the top of the base 1 has a plug rod, and the top of the plug rod is inserted and limited in the sleeve.

[0026] As Figure 1 and Figure 2 shown, the driving component includes a first motor 23 electrically connected to the controller, and a lead screw 24 vertically arranged and connected to the output shaft of the first motor 23; the first motor 23 is installed at the bottom end of the mounting frame 21, and the top end of the lead screw 24 is rotatably installed on the mounting frame 21; the lifting platform 22 is threadedly connected to the lead screw 24, and a sliding member 25 is installed on the lifting platform 22; the mounting frame 21 has a vertically arranged chute 26, and the sliding member 25 is slidably arranged in the chute 26.

[0027] In this embodiment, the mounting bracket 21 is integrally U-shaped and is arranged vertically. The first motor 23 and the lead screw 24 are both installed inside the mounting bracket 21. The mounting bracket 21 includes two horizontal sections and a vertical section connecting the two horizontal sections. The first chute 26 is opened on the vertical section, and the sliding member 25 is a roller; a threaded hole threadedly connected to the lead screw 24 is opened on the lifting platform 22.

[0028] As Figure 1 and Figure 3 shown, the rotating mechanism 3 includes a bracket 32 fixed to the mounting bracket 21, a stepping motor 33 installed on the bracket 32, and a turntable 31 installed on the output shaft of the stepping motor 33. The stepping motor 33 is electrically connected to the controller.

[0029] In this embodiment, the turntable 31 has a cross-shaped mounting plate, and the infusion bottle placement mechanism 4 is installed on the turntable 31 through the mounting plate.

[0030] The monitoring mechanism includes an electromagnetic flow sensor capable of monitoring the liquid flow rate in the infusion set. The electromagnetic flow sensor is installed on the lifting platform 22 and sleeved on the infusion tube of the infusion set. The electromagnetic flow sensor is electrically connected to the controller.

[0031] In this embodiment, the electromagnetic flow sensor is a device that measures the flow rate of a conductive fluid using Faraday's law of electromagnetic induction. That is, when a conductive liquid moves in a magnetic field to cut the magnetic induction lines, an induced electromotive force will be generated in the liquid, and its magnitude is proportional to the liquid flow rate. The excitation coil inside the sensor generates a magnetic field, and the electrodes are used to detect the induced electromotive force. By measuring the magnitude of this electromotive force and through signal conversion and processing, the flow rate of the measured fluid can be obtained.

[0032] In this embodiment, the infusion tube of the infusion set is inserted into the measuring tube of the electromagnetic flow sensor and fixed to each other by tape or pipe clamps. The flow rate of the infusion is monitored by the electromagnetic flow sensor, and the flow rate is used to calculate the flow volume, and then the injected drug amount is known. Then, the remaining drug amount, that is, the un-injected drug amount, is obtained by subtracting the injected drug amount from the total drug amount.

[0033] As Figure 1 shown, the infusion bottle placement mechanism 4 includes a plurality of housings 41 all installed on the turntable 31. Each housing 41 has an opening at the top, each housing 41 has a cavity capable of accommodating an infusion bottle, each housing 41 has an opening at the bottom capable of extending out the infusion bottle cap, and the bottom of each opening penetrates through the turntable 31.

[0034] As Figure 1As shown, long holes 42 are formed on both opposite sides of the side wall of the housing 41, and the top of each long hole 42 communicates with the opening at the top of the housing 41; a limiting plate 43 is slidably arranged in the housing 41, and both opposite ends of the limiting plate 43 have extending ends 44, and the two extending ends 44 extend out of the housing 41 from the corresponding long holes 42, and an arc-shaped member 45 is rotatably connected to each extending end 44; a plurality of jacks 46 are arranged at intervals on the side wall of the housing 41; when the limiting plate 43 and the arc-shaped member 45 move to the corresponding height together, rotate the arc-shaped member 45 to insert one end of the arc-shaped member 45 into the corresponding jack 46 to limit the limiting plate 43 at the corresponding height.

[0035] In this embodiment, the limiting plate 43 can be taken out from the opening at the top of the housing 41, then the infusion bottle is placed in the housing 41, then the limiting plate 43 is put into the housing 41 and contacts the top of the infusion bottle, and then the arc-shaped member 45 is rotated to insert one end of the arc-shaped member 45 into the corresponding jack 46 to limit the limiting plate 43 at the corresponding height.

[0036] As Figure 1 shown, the number of the housings 41 is four.

[0037] As Figure 1 and Figure 4 shown, the mechanical claw 5 includes a mounting member 51 mounted on the lifting platform 22, a second motor 52 mounted on the mounting member 51, a connecting rod assembly is mounted on the output shaft of the second motor 52, and both opposite ends of the connecting rod assembly are connected with clamping arms 53; one end of the clamping arm 53 is a clamping end, and a second chute 54 is formed at the other end and is connected with the connecting rod assembly, and the clamping arm 53 is slidably connected with one end of the mounting member 51 through the second chute 54; the second motor 52 is driven to drive the connecting rod assembly so that the two clamping arms 53 approach or move away from each other.

[0038] In this embodiment, one end of the mounting member 51 close to the clamping arm 53 has a slide rail, and the clamping arm 53 is slidably arranged on the slide rail through the second chute 54, and the cross section of the second chute 54 is T-shaped.

[0039] The connecting rod assembly includes a first connecting rod 55, and the central position of the first connecting rod 55 is connected with the output shaft of the second motor 52; arc-shaped second connecting rods 56 are respectively rotatably connected to both ends of the first connecting rod 55 in its length direction, and the end of the second connecting rod 56 far from the first connecting rod 55 is rotatably connected with the end of the corresponding clamping arm 53 where the second chute 54 is formed.

[0040] As Figure 4 shown, in this embodiment, the two arc-shaped second connecting rods 56 have the same structure and opposite setting directions.

[0041] Working principle: Medical staff sequentially place the infusion bottles into the infusion bottle placement mechanism 4, then input the number of infusion bottles into the controller, then insert the infusion tube into the electromagnetic flow sensor, then firmly grasp the puncture needle of the infusion tube with the mechanical claw 5, and then start the lifting mechanism 2 to drive the mechanical claw 5 to move upward, so that the puncture needle penetrates the bottom of the infusion bottle.

[0042] When the monitoring value of the electromagnetic flow sensor is less than the preset value, it indicates that the current infusion bottle is about to complete the infusion; then start the lifting mechanism 2 to drive the mechanical claw to move downward, so that the puncture needle is pulled out of the empty infusion bottle.

[0043] Then the rotation mechanism 3 is started, and the stepping motor 33 drives the turntable 31 to rotate a preset angle, so that the uninfused infusion bottle is located directly above the puncture needle, and then the lifting mechanism 2 is started to drive the mechanical claw to move upward, so that the puncture needle penetrates into the new infusion bottle.

[0044] When the last infusion bottle is finished, the controller can drive the corresponding alarm to give an alarm, and the medical staff immediately pulls out the needle from the patient to complete an infusion.

[0045] Embodiment 2: Based on the infusion bottle replacement device of Embodiment 1, this embodiment provides a control method for the infusion bottle replacement device, which is executed by the controller and includes: Step 1: Obtain and save the number of infusion bottles to be infused, and denote the number of infusion bottles to be infused as a; Step 2: Control the mechanical claw 5 to grasp the puncture needle of the infusion set; In this embodiment, the operator needs to place the puncture needle between the two clamping arms 53, and then the mechanical claw 5 grasps the puncture needle.

[0046] Step 3: Control the lifting platform 22 of the lifting mechanism 2 to move upward, and penetrate the puncture needle of the infusion set into the bottom of the infusion bottle; Step 4: Receive the monitoring value real-time monitored by the electromagnetic flow sensor. When the monitoring value is less than the preset value, it indicates that the current infusion bottle is about to complete the infusion; and control the lifting platform 22 of the lifting mechanism 2 to move downward, and pull out the puncture needle of the infusion set from the bottom of the infusion bottle; Step 5: Save the number of infusion bottles that have completed the infusion, and denote the number of infusion bottles that have completed the infusion as b. When b < a, control the turntable 31 of the rotation mechanism 3 to rotate a preset angle, and repeat Steps 3 to 5 until b = a, then complete this infusion; Step 6: Control the alarm to sound an alarm.

[0047] In this embodiment, when the turntable 31 rotates by a preset angle, the infusion bottle that is not in use just rotates to the directly above the puncture needle. This effect can be achieved through a limit switch, that is, a trigger is provided on each housing 41, a fixing member is installed on the lifting platform 22, and a limit switch is installed on the fixing member. When the turntable 31 rotates to the corresponding position, the trigger of the corresponding infusion bottle triggers the limit switch, and then the controller controls the rotation mechanism 3 to stop rotating, so that the infusion bottle that is not in use just rotates to the directly above the puncture needle.

[0048] The above are only several specific embodiments of the present invention. However, the embodiments of the present invention are not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. An infusion bottle replacement device, characterized in that, Comprising: A base (1); A lifting mechanism (2), including a mounting frame (21) mounted on the base (1), and a driving assembly mounted on the mounting frame (21); the driving assembly has a lifting platform (22) capable of lifting in the vertical direction; A rotating mechanism (3), mounted on the mounting frame (21), having a turntable (31) capable of rotating in the horizontal plane; An infusion bottle placing mechanism (4), mounted on the turntable (31), having a plurality of cavities capable of setting infusion bottles; the infusion bottle placing mechanism (4) can rotate driven by the turntable (31); A mechanical claw (5), mounted on the lifting platform (22) and located below the rotating mechanism (3), the mechanical claw (5) can clamp the puncture needle of the infusion set; the mechanical claw (5) clamping the puncture needle can, driven by the lifting platform (22), pierce into or pull out of the infusion bottle; A monitoring mechanism for monitoring the liquid flow rate in the infusion set; A controller, electrically connected to the lifting mechanism (2), the rotating mechanism (3), the mechanical claw (5) and the monitoring mechanism respectively.

2. The infusion bottle replacement device according to claim 1, characterized in that, The driving assembly includes a first motor (23) electrically connected to the controller, and a lead screw (24) vertically arranged and connected to the output shaft of the first motor (23); the first motor (23) is mounted at the bottom end of the mounting frame (21), and the top end of the lead screw (24) is rotatably mounted on the mounting frame (21); The lifting platform (22) is threadedly connected to the lead screw (24), and a sliding member (25) is mounted on the lifting platform (22); the mounting frame (21) has a vertically arranged first chute (26), and the sliding member (25) is slidably arranged in the first chute (26).

3. The infusion bottle replacement device according to claim 1, characterized in that, The rotating mechanism (3) includes a bracket (32) fixed to the mounting frame (21), a stepping motor (33) mounted on the bracket (32), the turntable (31) is mounted on the output shaft of the stepping motor (33), and the stepping motor (33) is electrically connected to the controller.

4. The infusion bottle replacement device according to claim 1, characterized in that, The monitoring mechanism includes an electromagnetic flow sensor capable of monitoring the liquid flow rate in the infusion set, the electromagnetic flow sensor is mounted on the lifting platform (22) and sleeved on the infusion tube of the infusion set, and the electromagnetic flow sensor is electrically connected to the controller.

5. The infusion bottle replacement device according to claim 1, characterized in that, The infusion bottle placing mechanism (4) includes a plurality of housings (41) all mounted on the turntable (31), each housing (41) has an opening at the top, each housing (41) has a cavity capable of accommodating an infusion bottle, each housing (41) has an opening at the bottom capable of extending out the infusion bottle cap, and through holes are provided at the positions corresponding to the openings on the turntable (31), and each opening and the corresponding through hole are coaxially arranged.

6. The infusion bottle replacement device according to claim 5, wherein, Long strip holes (42) are provided on both opposite sides of the side wall of the housing (41), the top of each long strip hole (42) communicates with the opening at the top of the housing (41); a limiting plate (43) is slidably arranged in the housing (41), both opposite ends of the limiting plate (43) have extending ends (44), the two extending ends (44) extend out of the housing (41) from the corresponding long strip holes (42), and an arc-shaped member (45) is rotatably connected to each extending end (44); A plurality of jacks (46) are arranged at intervals on the side wall of the housing (41); when the limiting plate (43) and the arc-shaped member (45) are moved to the corresponding height together, rotate the arc-shaped member (45) to insert one end of the arc-shaped member (45) into the corresponding jack (46), and limit the limiting plate (43) at the corresponding height.

7. The infusion bottle replacement device according to claim 5, characterized in that, The number of the housings (41) is four, and an alarm electrically connected to the controller is provided on the housing (41).

8. The infusion bottle replacement device according to claim 1, wherein, The mechanical claw (5) includes a mounting member (51) mounted on the lifting table (22), a second motor (52) mounted on the mounting member (51), a connecting rod assembly mounted on the output shaft of the second motor (52), and clamping arms (53) rotatably connected to opposite ends of the connecting rod assembly; One end of the clamping arm (53) is a clamping end, and a second chute (54) is formed at the other end and is rotatably connected to the connecting rod assembly. The clamping arm (53) is slidably connected to one end of the mounting member (51) through the second chute (54); drive the second motor (52) to drive the connecting rod assembly so that the two clamping arms (53) approach or move away from each other.

9. The infusion bottle replacement device according to claim 8, characterized in that, The connecting rod assembly includes a first connecting rod (55), and the central position of the first connecting rod (55) is connected to the output shaft of the second motor (52); One arc-shaped second connecting rod (56) is rotatably connected to each of the two ends of the first connecting rod (55) in the length direction thereof, and the end of the second connecting rod (56) far from the first connecting rod (55) is rotatably connected to the end of the corresponding clamping arm (53) where the second chute (54) is formed.

10. The control method of the infusion bottle replacement device according to any one of claims 1 to 9, which is executed by the controller, is characterized in that Including: Step 1: Obtain and save the number of infusion bottles to be infused, and record the number of infusion bottles to be infused as a; Step 2: Control the mechanical claw (5) to grab the puncture needle of the infusion set; Step 3: Control the lifting table (22) of the lifting mechanism (2) to move upward, and puncture the puncture needle of the infusion set into the bottom of the infusion bottle; Step 4: Receive the monitoring value real-time monitored by the electromagnetic flow sensor. When the monitoring value is less than the preset value, it indicates that the current infusion bottle is about to finish infusion; and control the lifting table (22) of the lifting mechanism (2) to move downward, and pull out the puncture needle of the infusion set from the bottom of the infusion bottle; Step 5: Save the number of infusion bottles that have completed infusion, and record the number of infusion bottles that have completed infusion as b. When b < a, control the turntable (31) of the rotating mechanism (3) to rotate a preset angle, and repeat Steps 3 to 5 until b = a, and this infusion is completed; Step 6: Control the alarm to give an alarm.

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