Multifunctional multichannel infusion apparatus

Abstract

The utility model belongs to the technical field of medical instruments, and particularly discloses a multifunctional multichannel infusion apparatus which comprises an infusion cavity, a plurality of branch infusion tubes, a main infusion tube and an infusion needle. A plurality of openings are formed in the top of the infusion cavity, sealing plugs can be arranged at the openings or the openings are detachably connected with one ends of the branch infusion tubes in a sealed mode, the main infusion tube is connected with the bottom of the infusion cavity and communicated with the infusion needle through a connecting tube, and a normally-open electric valve is arranged at the communication position of the main infusion tube and the connecting tube; a color sensor is arranged on the connecting pipe, the output end of the color sensor is connected with the first input end of a color comparator through a digital-to-analog conversion module, the second input end of the color comparator is connected with a color threshold memory, and the output end of the color comparator is connected with the closing control end of the normally open electric valve. According to the technical scheme, the color sensor and the color comparator are utilized, when blood of a patient flows back, the normally-open electric valve is controlled to be closed, blood backflow is automatically blocked, and the main infusion tube is prevented from being polluted.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical equipment and relates to a multifunctional multi-channel infusion set. Background Art

[0002] At present, in medical institutions, intravenous infusion therapy is a routine treatment method adopted by medical staff. When the amount of injection solution exceeds one bottle, it must be replaced in time by medical staff, otherwise it may cause the patient's blood to flow back into the infusion tube, or air may be introduced into the blood vessels and cause air embolism.

[0003] Therefore, medical staff and patients need to pay attention to the situation of the medicine liquid level at all times, which increases the mental burden of patients and the workload of medical staff.

[0004] In the prior art, patent CN202020089711.1 discloses a multi-channel nursing infusion device that can automatically convert infusion bags, including an infusion bag and a controller, a sealing block is fixed at the upper end of the infusion bag, and an infusion tube 1 is fixed inside the sealing block, the upper end of the infusion tube 1 is provided with a liquid inlet needle, and the outer surface of the infusion tube 1 is fixed with a control valve, the left side of the infusion tube 1 is provided with an infusion tube 2, the controller is fixed to the right side of the infusion bag, and a lithium battery is fixed below the controller, and a flow control valve is fixed at the lower end of the infusion bag. The infusion device is provided with three infusion tubes to meet the automatic liquid replacement requirements, but it does not have equipment for cleaning the outlet tube and the infusion bag, resulting in the risk of liquid contamination when it is repeatedly used. In addition, there is no partition device at the connection between the needle and the outlet tube. If blood backflow occurs at the needle, it will flow into the outlet tube along the needle and contaminate the outlet tube, resulting in the equipment being only disposable and increasing resource consumption. Utility Model Content

[0005] The utility model aims to provide a multifunctional multi-channel infusion set to solve the problem of blood reflux and contamination of the liquid outlet tube in the existing infusion set.

[0006] In order to achieve the above-mentioned purpose, the basic scheme of the utility model is: a multifunctional multi-channel infusion device, including an infusion cavity, a plurality of branch infusion tubes, a main infusion tube, and an infusion needle;

[0007] The top of the infusion cavity is provided with a plurality of openings, and a sealing plug can be provided at the opening or can be detachably sealed and connected with one end of a branch infusion tube, and the other end of the branch infusion tube is detachably connected with a bottle plug puncture device, which can be connected with an infusion bottle or an infusion bag, and a control valve is provided on the branch infusion tube;

[0008] One end of the main infusion tube is connected to the bottom of the infusion cavity, and the other end of the main infusion tube is connected to the infusion needle through a connecting tube. A normally open electric valve is provided at the connection point between the main infusion tube and the connecting tube.

[0009] A color sensor is provided on the connecting pipe, the output end of the color sensor is connected to the first input end of the color comparator through a digital-to-analog conversion module, the second input end of the color comparator is connected to a color threshold memory, and the output end of the color comparator is connected to the closing control end of the normally open electric valve.

[0010] The working principle and beneficial effect of this basic solution are as follows: This technical solution sets up an infusion cavity. When multiple drugs need to be mixed, the drugs can be injected into the infusion cavity through the opening and mixed therein to meet the use requirements. Multiple branch infusion tubes can be connected to multiple infusion bottles or infusion bags, and the control valve can be used to control whether the branch infusion tubes are connected to the infusion cavity to achieve the replacement of the injected drugs.

[0011] The main infusion tube is connected to the infusion needle through the connecting tube, and a normally open electric valve is set at the connection point between the main infusion tube and the connecting tube to block the connection between the connecting tube and the main infusion tube when necessary. The color sensor collects the color signal in the connecting tube and transmits it to the color comparator. The color comparator compares the collected color signal with the color threshold. If the collected color signal is equal to or greater than the color threshold, the color comparator outputs a control signal to the closing control end of the normally open electric valve to control the closing of the normally open electric valve, automatically blocking the connection tube and the main infusion tube, preventing blood from flowing back into the main infusion tube, protecting the main infusion tube from contamination and enabling recycling, and reducing resource waste.

[0012] Furthermore, it also includes a control mechanism, which includes N hooks and N pressure comparators, N≥1;

[0013] The hook is arranged on an infusion support of a hospital, a pressure sensor is arranged on the hook, an output end of the pressure sensor is connected to a first input end of a pressure comparator, and a second input end of the pressure comparator is connected to a pressure threshold memory;

[0014] The output end of the pressure comparator corresponding to the first hook is connected to the control end of the control valve on the corresponding branch infusion tube, and the output end of the pressure comparator corresponding to the nth hook is connected to the control end of the control valve on the corresponding branch infusion tube through a normally open switch. If n≥2, the output end of the pressure comparator corresponding to the n-1th hook is connected to the control end of the normally open switch corresponding to the nth hook after a NOT gate.

[0015] A hook is provided for hanging an infusion bottle or an infusion bag, and the pressure sensor can collect pressure information of the infusion bottle or the infusion bag hung on the hook and transmit it to the pressure comparator. The pressure comparator compares the collected pressure signal value with the pressure threshold in the corresponding pressure threshold memory. If the collected pressure signal value corresponding to the first hook is greater than or equal to its corresponding pressure threshold, the pressure comparator corresponding to the first hook outputs a control signal to the control end of the control valve on the corresponding branch infusion tube, opens the control end, and connects the branch infusion tube to the infusion cavity for infusion.

[0016] If the solution in the infusion bottle or infusion bag on the previous hook is about to be finished, the corresponding pressure comparator will output a control signal to the control end of the normally open switch corresponding to the next hook after the NOT gate, and the normally open switch will be controlled to close. Then the pressure comparator corresponding to the next hook can output a control signal to the control end of the corresponding control valve, and the branch infusion tube corresponding to the next hook will be controlled to be connected to the infusion cavity, so as to automatically replace the infusion medicine without manual control, which is more convenient to use.

[0017] Furthermore, an input end of the pressure threshold memory is connected to a human-computer interaction module.

[0018] Different threshold signals are input into the pressure threshold memory through the human-computer interaction module to meet the threshold range of infusion bottles or infusion bags of different weights.

[0019] Furthermore, the control mechanism also includes an infusion completion alarm mechanism, which includes an AND gate and an alarm. The output ends of all pressure comparators are connected to the AND gate after passing through a NOT gate. The output end of the AND gate is connected to the control end of the alarm. The alarm is installed on the outer wall of the infusion cavity.

[0020] When the pressure comparators corresponding to all infusion bottles output control signals through the NOT gate, it means that the weight of all infusion bottles or infusion bags has been reduced to the critical value, indicating that the infusion is completed. At this time, the AND gate outputs a control signal to the alarm, the alarm is activated, and an alarm signal indicating that the infusion is completed is issued to alert the infused patients and medical staff.

[0021] Furthermore, it also includes a cleaning mechanism, which includes a water tank, a water pump and a water pipe;

[0022] The water pump is arranged in the water tank, one end of the water pipe is connected with the water tank, and the connecting point is located at the water pump, and the other end of the water pipe can be detachably connected with the opening of the infusion cavity.

[0023] By connecting the water pipe to the infusion cavity and starting the water pump, the cleaning liquid in the water tank is input into the infusion cavity along the water pipe, and then flows from the infusion cavity to the branch infusion tube and the main infusion tube. The cleaning is completed with simple operation.

[0024] Further, it also includes a flow sensor, a first flow comparator, a second flow comparator and a flow regulator;

[0025] The flow sensor is arranged on the inner wall of the main infusion tube, the output end of the flow sensor is respectively connected to the first input end of the first flow comparator and the second flow comparator, the second input end of the first flow comparator and the second flow comparator are respectively connected to the first flow threshold memory and the second flow threshold memory, and the input ends of the first flow threshold memory and the second flow threshold memory are both connected to the human-computer interaction module;

[0026] The flow regulator is installed on the main infusion tube, the output end of the first flow comparator is connected to the flow increase control end of the flow regulator, and the output end of the second flow comparator is connected to the flow decrease control end of the flow regulator.

[0027] A flow sensor is provided to collect the liquid flow information in the main infusion tube and transmit it to the first flow comparator and the second flow comparator. The first flow comparator and the second flow comparator compare the collected flow information with the flow threshold in the memory connected to themselves. When the collected flow information is less than the first flow threshold, the first flow comparator outputs a control signal to the flow increase control end of the flow regulator to increase the flow in the main infusion tube and speed up the infusion speed.

[0028] When the collected flow information is greater than the second flow threshold, the second flow comparator outputs a control signal to the flow reduction control end of the flow regulator to reduce the flow in the main infusion tube and slow down the infusion speed.

[0029] Furthermore, the input ends of the first flow threshold memory and the second flow threshold memory are both connected to the human-computer interaction module, and the desired threshold information can be input into the memory through the human-computer interaction module, thereby enabling flexible adjustment and more convenient use.

[0030] Furthermore, it also includes a heater, which is installed on the inner wall of the infusion cavity or the main infusion tube.

[0031] The heater is used to heat the liquid medicine to be injected into the human body, thereby increasing the comfort of the patient during the infusion.

[0032] Furthermore, the connecting pipe is provided with a medicine pushing port, and a sealing block is provided at the medicine pushing port.

[0033] When in use, the sealing block can be removed from the medicine pushing port, and intravenous injection can be performed at the medicine pushing port.

[0034] Furthermore, a Moffitt dropper is provided on the main infusion tube.

[0035] The Moffitt dropper has a simple structure, is self-venting, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a structural schematic diagram of the multifunctional multi-channel infusion set of the utility model.

[0037] The figure marks in the drawings of the specification include: infusion cavity 1, branch infusion tube 2, main infusion tube 3, infusion needle 4, opening 5, sealing plug 6, bottle plug piercer 7, infusion bottle 8, control valve 9, connecting tube 10, normally open electric valve 11, color sensor 12, hook 13, pressure sensor 14, alarm 15, water tank 16, water pump 17, water pipe 18, flow regulator 19, flow sensor 20, heater 21, medicine push port 22, and Moffitt dropper 23. DETAILED DESCRIPTION

[0038] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0039] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] In the description of the present utility model, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection of two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0041] The utility model discloses a multifunctional multi-channel infusion device, such as Figure 1 As shown, it includes an infusion cavity 1, a plurality of branch infusion tubes 2, a main infusion tube 3, and an infusion needle 4.

[0042] The top of the infusion cavity 1 is provided with a plurality of openings 5, where a sealing plug 6 can be provided or the opening 5 can be detachably sealed and connected with one end of the branch infusion tube 2 (such as directly clamped, connected by a buckle structure, etc.), and the other end of the branch infusion tube 2 can be detachably connected (such as clamped) with a bottle plug piercer 7, which is inserted into the rubber plug of the infusion bottle 8 or the infusion bag through the bottle plug piercer 7 to achieve connection with the infusion bottle 8 or the infusion bag. A control valve 9 is provided on the branch infusion tube 2, and the control valve 9 can be an electric valve, such as DN15, Q941F46, etc.

[0043] One end of the main infusion tube 3 is connected to the bottom of the infusion cavity 1, and can be fixedly connected (such as welding, bonding, etc.) or detachably connected (such as clamping, etc.). The other end of the main infusion tube 3 is connected to the infusion needle 4 through the connecting tube 10. The main infusion tube 3 can be clamped with the connecting tube 10, and the connecting tube 10 can be integrally arranged with the infusion needle 4, or a connection structure such as clamping or bonding can also be adopted. A normally open electric valve 11 is provided at the connection between the main infusion tube 3 and the connecting tube 10.

[0044] The connecting tube 10 is provided with a color sensor 12 (such as CZ series, BC15-LDT-CP, etc.), the output end of the color sensor 12 is electrically connected to the first input end of the color comparator through a digital-to-analog conversion module (such as AK4021, etc.), the second input end of the color comparator is electrically connected to a color threshold memory, and the output end of the color comparator is electrically connected to the closing control end of the normally open electric valve 11. If the color in the connecting tube 10 becomes darker when blood refluxes, or the color in the connecting tube 10 changes, the color signal collected by the corresponding color sensor 12 is compared with the reference color to detect the color.

[0045] The memory in the utility model can be selected from 24CXX series, 93CXX series, etc., and the comparator can be an analog comparator or a digital comparator, preferably but not limited to LM324 and LM339. And the rear end of the set sensor can be provided with a digital-to-analog conversion module for signal conversion and easy use.

[0046] During use, if multiple drugs need to be mixed before infusion, the drugs can be injected through the opening 5 of the infusion cavity 1 and mixed therein to meet the use requirements. Multiple branch infusion tubes 2 can be connected to multiple infusion bottles 8 or infusion bags, and the control valve 9 can be used to control whether the branch infusion tubes 2 are connected to the infusion cavity 1 to achieve the replacement of the injected drugs.

[0047] The main infusion tube 3 is connected to the infusion needle 4 through the connecting tube 10, and a normally open electric valve 11 is provided at the connection point between the main infusion tube 3 and the connecting tube 10, so as to block the connection between the connecting tube 10 and the main infusion tube 3 when necessary. The color sensor 12 collects the color signal in the connecting tube 10 and transmits it to the color comparator. The color comparator compares the collected color signal with the color threshold. If the collected color signal is equal to or greater than the color threshold, the color comparator outputs a control signal to the closing control end of the normally open electric valve 11, controls the normally open electric valve 11 to close, and automatically blocks the connection between the connecting tube 10 and the main infusion tube 3, prevents blood from flowing back into the main infusion tube 3, protects the main infusion tube 3 from being contaminated and enables recycling, and reduces resource waste.

[0048] In a preferred embodiment of the present invention, the multifunctional multi-channel infusion device further comprises a control mechanism, which comprises N hooks 13 and N pressure comparators, where N≥1 and N is a positive integer.

[0049] The hook 13 is fixedly arranged (such as welding, soldering, riveting, etc.) on the infusion stand of the hospital, and a pressure sensor 14 (such as 26PC01 SMT, ZCH304, etc.) is arranged on the hook 13 to collect the pressure signal of the object hung on the hook 13. The output end of the pressure sensor 14 is electrically connected to the first input end of the pressure comparator, and the second input end of the pressure comparator is electrically connected to the pressure threshold memory.

[0050] The output end of the pressure comparator corresponding to the first hook 13 is electrically connected to the control end of the control valve 9 on the corresponding branch infusion tube 2, and the output end of the pressure comparator corresponding to the nth hook 13 is electrically connected to the control end of the control valve 9 on the corresponding branch infusion tube 2 through a normally open switch, n≥2, and the output end of the pressure comparator corresponding to the n-1th hook 13 is electrically connected to the control end of the normally open switch corresponding to the nth hook 13 after a NOT gate, n≤N.

[0051] The hook 13 is used to hang the infusion bottle 8 or the infusion bag, and the pressure sensor 14 can collect the pressure information of the infusion bottle 8 or the infusion bag hung on the hook 13, and transmit it to the pressure comparator. The pressure comparator compares the collected pressure signal value with the pressure threshold in the corresponding pressure threshold memory. If the collected pressure signal value corresponding to the first hook 13 is greater than or equal to its corresponding pressure threshold, the pressure comparator corresponding to the first hook 13 outputs a control signal to the control end of the control valve 9 on the corresponding branch infusion tube 2, opens the control end, and connects the branch infusion tube 2 with the infusion cavity 1 to perform infusion.

[0052] If the solution in the infusion bottle 8 or infusion bag on the previous hook 13 is about to be finished, the corresponding pressure comparator will output a control signal to the control end of the normally open switch corresponding to the next hook 13 after the NOT gate, and the normally open switch will be controlled to be closed. Then, the pressure comparator corresponding to the next hook 13 can output a control signal to the control end of the corresponding control valve 9, and the branch infusion tube 2 corresponding to the next hook 13 will be controlled to be connected to the infusion cavity 1, so as to automatically replace the infusion medicine without manual control, which is more convenient to use.

[0053] Preferably, the input end of the pressure threshold memory is electrically connected to a human-machine interaction module, and the human-machine interaction module can be a touch screen, a mobile phone, a computer, etc.

[0054] Different threshold signals are input into the pressure threshold memory through the human-computer interaction module to meet the threshold range of infusion bottles 8 or infusion bags of different weights.

[0055] More preferably, the control mechanism further includes an infusion completion alarm mechanism, which includes an AND gate and an alarm 15. The output ends of all pressure comparators are electrically connected to the AND gate after passing through a NOT gate, and the output end of the AND gate is electrically connected to the control end of the alarm 15, and the alarm 15 is installed (such as bonding, clamping, etc.) on the outer wall of the infusion cavity 1. The alarm 15 can use an LED lamp and a buzzer to emit an audible and visual alarm signal.

[0056] When the pressure comparators corresponding to all infusion bottles 8 output control signals through the NOT gate, it means that the weight of all infusion bottles 8 or infusion bags is reduced to the critical value, indicating that the infusion is completed. At this time, the AND gate outputs a control signal to the alarm 15, and the alarm 15 is started, sending out an alarm signal indicating that the infusion is completed, prompting the infusion patients and medical staff.

[0057] In a preferred embodiment of the present invention, the multifunctional multi-channel infusion device further comprises a cleaning mechanism, which comprises a water tank 16, a water pump 17 and a water pipe 18. The water pump 17 is disposed in the water tank 16, one end of the water pipe 18 is connected to the water tank 16, and the connection point is located at the water pump 17, and the other end of the water pipe 18 can be detachably connected to the opening 5 of the infusion chamber 1 (such as a snap connection, etc.).

[0058] By connecting the water pipe 18 to the infusion chamber 1, starting the water pump 17, the cleaning liquid in the water tank 16 is input into the infusion chamber 1 along the water pipe 18, and then flows from the infusion chamber 1 to the branch infusion tube 2 and the main infusion tube 3. The cleaning liquid flows out from the branch infusion tube 2 and the main infusion tube 3, and the cleaning is completed. The operation is simple.

[0059] In a preferred embodiment of the present invention, the multifunctional multi-channel infusion set also includes a flow sensor 20 (such as D6F-03A3, etc.), a first flow comparator, a second flow comparator and a flow regulator 19 (such as G1 / 20550-880 / B / 24VDC, HD2K series, etc.).

[0060] The flow sensor 20 is fixedly arranged (such as bonding, embedding, etc.) on the inner wall of the main infusion tube 3, and the output end of the flow sensor 20 is electrically connected to the first input end of the first flow comparator and the second flow comparator respectively. The second input ends of the first flow comparator and the second flow comparator are electrically connected to the first flow threshold memory and the second flow threshold memory respectively, and the input ends of the first flow threshold memory and the second flow threshold memory are both electrically connected to the human-computer interaction module.

[0061] The flow regulator 19 is installed on the main infusion tube 3 and is used to adjust the flow in the main infusion tube 3. The output end of the first flow comparator is electrically connected to the flow increase control end of the flow regulator 19, and the output end of the second flow comparator is electrically connected to the flow decrease control end of the flow regulator 19.

[0062] A flow sensor 20 is provided to collect the liquid flow information in the main infusion tube 3 and transmit it to the first flow comparator and the second flow comparator. The first flow comparator and the second flow comparator compare the collected flow information with the flow threshold in the memory connected to themselves. When the collected flow information is less than the first flow threshold, the first flow comparator outputs a control signal to the flow increase control end of the flow regulator 19 to increase the flow in the main infusion tube 3 and speed up the infusion speed.

[0063] When the collected flow information is greater than the second flow threshold, the second flow comparator outputs a control signal to the flow reduction control end of the flow regulator 19 to reduce the flow in the main infusion tube 3 and slow down the infusion speed.

[0064] Furthermore, the input ends of the first flow threshold memory and the second flow threshold memory are both connected to the human-computer interaction module, and the desired threshold information can be input into the memory through the human-computer interaction module, thereby enabling flexible adjustment and more convenient use.

[0065] In a preferred embodiment of the present invention, the multifunctional multi-channel infusion device further comprises a heater 21 (such as a silicone heating film, a 9gx-k heating sheet, etc.), and the heater 21 is installed (such as bonding, clamping, etc.) on the inner wall or outer wall of the infusion cavity 1 or the main infusion tube 3. The heater 21 is used to heat the liquid medicine to be infused into the human body, thereby increasing the comfort of the patient's infusion.

[0066] Preferably, a Moffitt dropper 23 is provided on the main infusion tube 3. The Moffitt dropper 23 has a simple structure, can be self-vented, and is easy to use.

[0067] In a preferred embodiment of the present invention, a medicine pushing port 22 is provided on the connecting tube 10, and a sealing block is provided at the medicine pushing port 22. When in use, the sealing block can be removed from the medicine pushing port 22, and intravenous injection can be performed at the medicine pushing port 22.

[0068] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0069] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A multifunctional multi-channel infusion set, characterized in that: It includes an infusion cavity, a plurality of branch infusion tubes, a main infusion tube, and an infusion needle; The top of the infusion cavity is provided with a plurality of openings, and a sealing plug can be provided at the opening or can be detachably sealed and connected with one end of a branch infusion tube, and the other end of the branch infusion tube is detachably connected with a bottle plug puncture device, which can be connected with an infusion bottle or an infusion bag, and a control valve is provided on the branch infusion tube; One end of the main infusion tube is connected to the bottom of the infusion cavity, and the other end of the main infusion tube is connected to the infusion needle through a connecting tube. A normally open electric valve is provided at the connection point between the main infusion tube and the connecting tube. A color sensor is provided on the connecting pipe, the output end of the color sensor is connected to the first input end of the color comparator through a digital-to-analog conversion module, the second input end of the color comparator is connected to a color threshold memory, and the output end of the color comparator is connected to the closing control end of the normally open electric valve.

2. The multifunctional multi-channel infusion set according to claim 1, characterized in that: Also included is a control mechanism, the control mechanism includes N hooks and N pressure comparators, N ≥ 1; The hook is arranged on an infusion support of a hospital, a pressure sensor is arranged on the hook, an output end of the pressure sensor is connected to a first input end of a pressure comparator, and a second input end of the pressure comparator is connected to a pressure threshold memory; The output end of the pressure comparator corresponding to the first hook is connected to the control end of the control valve on the corresponding branch infusion tube, and the output end of the pressure comparator corresponding to the nth hook is connected to the control end of the control valve on the corresponding branch infusion tube through a normally open switch. If n≥2, the output end of the pressure comparator corresponding to the n-1th hook is connected to the control end of the normally open switch corresponding to the nth hook after a NOT gate.

3. The multifunctional multi-channel infusion set according to claim 2, characterized in that: The input end of the pressure threshold memory is connected to a human-computer interaction module.

4. The multifunctional multi-channel infusion set according to claim 2, characterized in that: The control mechanism also includes an infusion completion alarm mechanism, which includes an AND gate and an alarm. The output ends of all pressure comparators are connected to the AND gate after passing through a NOT gate. The output end of the AND gate is connected to the control end of the alarm. The alarm is installed on the outer wall of the infusion cavity.

5. The multifunctional multi-channel infusion set according to claim 1, characterized in that: Also included is a cleaning mechanism, which includes a water tank, a water pump and a water pipe; The water pump is arranged in the water tank, one end of the water pipe is connected with the water tank, and the connecting point is located at the water pump, and the other end of the water pipe can be detachably connected with the opening of the infusion cavity.

6. The multifunctional multi-channel infusion set according to claim 1, characterized in that: Also includes a flow sensor, a first flow comparator, a second flow comparator and a flow regulator; The flow sensor is arranged on the inner wall of the main infusion tube, the output end of the flow sensor is respectively connected to the first input end of the first flow comparator and the second flow comparator, the second input end of the first flow comparator and the second flow comparator are respectively connected to the first flow threshold memory and the second flow threshold memory, and the input ends of the first flow threshold memory and the second flow threshold memory are both connected to the human-computer interaction module; The flow regulator is installed on the main infusion tube, the output end of the first flow comparator is connected to the flow increase control end of the flow regulator, and the output end of the second flow comparator is connected to the flow decrease control end of the flow regulator.

7. The multifunctional multi-channel infusion set according to claim 1, characterized in that: It also includes a heater, which is installed on the inner wall of the infusion cavity or the main infusion tube.

8. The multifunctional multi-channel infusion set according to claim 1, characterized in that: The connecting pipe is provided with a medicine pushing port, and a sealing block is provided at the medicine pushing port.

9. The multifunctional multi-channel infusion set according to claim 1, characterized in that: The main infusion tube is provided with a Moffitt dropper.

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