Relay method and device between injection pumps, equipment and storage medium

Abstract

The embodiment of the invention discloses a relay method and device between injection pumps, equipment and a storage medium, and the method comprises the steps: obtaining a first pressure of a liquid medicine in a second injection pump on the inner wall of the second injection pump when a motor is started at a preset first frequency and pushes the second injection pump after the first injection pump finishes infusion; acquiring a second pressure of the liquid medicine in the second injection pump on the inner wall of the second injection pump in real time when the motor pushes the second injection pump; taking M times of the first frequency as a second frequency; acquiring a third frequency of the motor when the second injection pump is at a real flow speed, wherein the real flow speed is the actual flow speed of the liquid medicine; when the difference value between the second pressure and the first pressure is larger than a preset threshold value, the size relation between the second frequency and the third frequency is judged to adjust the operation frequency of the motor, so that the friction force in the injection pump is reduced, and the time required for the injection pump to reach the stable infusion speed is shortened; therefore, fast and stable flow speed operation is ensured when the injection pump is switched for injection.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to a relay method, device, equipment and storage medium between injection pumps. Background Art

[0002] The syringe pump can achieve high-precision and smooth drug injection. It is an important device commonly used in clinical practice for accurate and stable drug injection. The injection speed and total amount can be set according to the type of drug, patient condition, etc. However, the syringe has a limited range, and a single syringe pump cannot meet the requirements of continuous and smooth injection of large amounts of liquid medicine. Multiple syringe pumps are required to cascade injection to meet the injection needs of large amounts of liquid medicine. The existing syringe pump cascade function is designed to start another syringe pump when one syringe pump completes the injection, so that multiple syringe pumps can continue to inject uninterruptedly. In the actual injection process, if the set speed is low, the next syringe pump to be connected will take a long time to eliminate the friction inside the syringe in order to effectively output the liquid, and then it will take a long time to reach a stable infusion speed, resulting in the inability to run quickly at a stable flow rate when switching pumps for continuous injection. Summary of the invention

[0003] Based on this, it is necessary to propose a relay method, device, equipment and storage medium between injection pumps to address the above problems.

[0004] The specific technical scheme of the first embodiment of the present invention is: a relay method between injection pumps, applied to an infusion system, the infusion system includes an information acquisition system and multiple injection pumps, the injection pump includes a motor, the injection pump is used for infusion, the method includes: when the first injection pump finishes infusion, obtaining the first pressure of the medicine in the second injection pump on the inner wall of the second injection pump when the motor starts and pushes the second injection pump at a preset first frequency; obtaining in real time the second pressure of the medicine in the second injection pump on the inner wall of the second injection pump when the motor pushes the second injection pump; taking M times the first frequency as the second frequency; obtaining the third frequency of the motor of the second injection pump at the actual flow rate, the actual flow rate is the actual flow rate of the medicine; when the difference between the second pressure and the first pressure is greater than a preset threshold, judging the size relationship between the second frequency and the third frequency to adjust the operating frequency of the motor.

[0005] Preferably, the step of determining the magnitude relationship between the second frequency and the third frequency includes: if the second frequency is greater than the third frequency, the motor pushes the second injection pump at the second frequency; obtaining the third pressure of the liquid in the second injection pump on the inner wall of the second injection pump when the motor pushes the second injection pump at the second frequency; taking the second frequency as the first frequency and the third pressure as the first pressure, and returning to the step of determining the magnitude relationship between the second frequency and the third frequency when the difference between the second pressure and the first pressure is greater than a preset threshold, until the second frequency is less than or equal to the third frequency, and the motor pushes the second injection pump at the third frequency.

[0006] Preferably, the determining of the magnitude relationship between the second frequency and the third frequency includes: if the second frequency is less than or equal to the third frequency, the motor drives the second injection pump at the third frequency.

[0007] Preferably, the method further includes: obtaining the number of times M times the first frequency is used as the second frequency; when the number is equal to a preset value, stopping the adjustment of the first frequency; and the motor drives the second injection pump at the third frequency.

[0008] Preferably, the method further comprises: when the total amount of liquid medicine in all the injection pumps in the infusion system is 0, the infusion system generates an alarm.

[0009] Preferably, the method further comprises: acquiring in real time the pushing speed of the second injection pump pushing the liquid medicine; when the pushing speed is not within a preset standard range, the infusion system alarms.

[0010] Preferably, the value of M is 1 / N, where N is a positive integer greater than 1.

[0011] The specific technical solution of the second embodiment of the present invention is: a relay device between injection pumps, the device comprising: a first pressure acquisition module, a second pressure acquisition module, a first frequency modulation module, a frequency acquisition module and a second frequency modulation module; the first pressure acquisition module is used to obtain the first pressure of the liquid medicine in the second injection pump on the inner wall of the second injection pump when the motor starts at a preset first frequency and pushes the second injection pump after the first injection pump finishes infusion; the second pressure acquisition module is used to obtain in real time the second pressure of the liquid medicine in the second injection pump on the inner wall of the second injection pump when the motor pushes the second injection pump; the first frequency modulation module is used to use M times the first frequency as the second frequency; the frequency acquisition module is used to obtain the third frequency of the motor of the second injection pump at the actual flow rate, and the actual flow rate is the actual flow rate of the liquid medicine; the second frequency modulation module is used to judge the size relationship between the second frequency and the third frequency to adjust the operating frequency of the motor when the difference between the second pressure and the first pressure is greater than a preset threshold.

[0012] The specific technical solution of the third embodiment of the present invention is: a relay device between injection pumps, including a memory and a processor, the memory stores a computer program, and when the computer program is executed by the processor, the processor executes the steps of the method described in any one of the first embodiments of the present application.

[0013] The specific technical solution of the fourth embodiment of the present invention is: a computer-readable storage medium storing a computer program, which, when executed by a processor, enables the processor to perform the steps of the method described in any one of the first embodiments of the present application.

[0014] The embodiments of the present invention have the following beneficial effects:

[0015] The present invention obtains the first pressure of the medicine liquid in the second injection pump on the inner wall of the second injection pump when the motor starts and pushes the second injection pump at a preset first frequency after the first injection pump finishes infusion; obtains the second pressure of the medicine liquid in the second injection pump on the inner wall of the second injection pump when the motor pushes the second injection pump in real time; takes M times the first frequency as the second frequency; obtains the third frequency of the motor of the second injection pump at the real flow rate, and the real flow rate is the actual flow rate of the medicine liquid; when the difference between the second pressure and the first pressure is greater than a preset threshold, determines the size relationship between the second frequency and the third frequency to adjust the operating frequency of the motor, thereby reducing the friction in the injection pump and shortening the time required for the injection pump to reach a stable infusion speed, so as to ensure fast and stable flow rate operation when switching the injection pump for injection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A flowchart of the steps of a relay method between injection pumps;

[0018] Figure 2 A flow chart of the steps for determining the magnitude relationship between the second frequency and the third frequency;

[0019] Figure 3 A flowchart of the steps of reducing the frequency according to the number of frequency reductions;

[0020] Figure 4 It is a schematic diagram of the structure of the relay device between the injection pumps;

[0021] Figure 5 It is a diagram of the internal structure of a computer device;

[0022] Among them, 401 is a first pressure acquisition module; 402 is a second pressure acquisition module; 403 is a first frequency modulation module; 404 is a frequency acquisition module; 405 is a second frequency modulation module. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0024] When switching injection between two pumps, the second pump will take a long time to reach a stable flow rate due to the friction of the inner wall of the syringe. To avoid this phenomenon, when the next pump is started, set a higher speed to eliminate the friction of the inner wall of the syringe, and then gradually reduce the motor speed according to the pressure change until a stable flow rate is reached.

[0025] See also Figure 1 , is a flowchart of the steps of a relay method between syringe pumps in the first embodiment of the present application, which is applied to an infusion system, wherein the infusion system includes an information acquisition system and a plurality of syringe pumps, wherein the syringe pump includes a motor, and the syringe pump is used for infusion, and the method includes:

[0026] Step 101, when the first injection pump finishes infusion, obtaining a first pressure P0 of the liquid medicine in the second injection pump on the inner wall of the second injection pump when the motor starts at a preset first frequency F0 and pushes the second injection pump;

[0027] Step 102, obtaining in real time a second pressure P of the liquid medicine in the second syringe pump on the inner wall of the second syringe pump when the motor pushes the second syringe pump;

[0028] Step 103, taking M times of the first frequency F0 as the second frequency F'0;

[0029] Step 104: Obtain the third frequency F of the motor of the second injection pump at the actual flow rate real , the real flow rate is the actual flow rate of the liquid medicine;

[0030] Step 105: When the difference P0 between the second pressure P and the first pressure is greater than a preset threshold value p, determine whether the second frequency F'0 is equal to the third frequency F real The size relationship is used to adjust the operating frequency of the motor.

[0031] Specifically, in the cascade relay, when the infusion of the previous pump is completed, the completion information is transmitted to the central station control system, and the relay start command is sent through the central station control system to remind the next pump to start the relay, and then the next pump immediately enters the relay state. The first injection pump and the second injection pump are any two infusion pumps in the infusion system. When the first infusion pump finishes the infusion, according to the set infusion method, the motor will start and push the second injection pump at the preset first frequency F0; when the motor pushes the second injection pump, the inner wall of the injection pump will produce resistance to the second injection pump, so the first pressure P0 of the liquid medicine in the second injection pump on the inner wall of the second injection pump is obtained; because the resistance of the inner wall to the injection pump is different during startup and when pushing the liquid medicine, the second pressure P of the liquid medicine in the second injection pump on the inner wall of the second injection pump when the motor pushes the second injection pump is obtained; M times the first frequency F0 is used as the second frequency F'0; the third frequency F of the motor of the second injection pump at the actual flow rate is obtained. real ; Obtain the difference between the second pressure P and the first pressure P0. When the difference between the second pressure P and the first pressure P0 is greater than the preset threshold value p, determine whether the second frequency F'0 is equal to the third frequency F real The size relationship is used to adjust the operating frequency of the motor; wherein the preset threshold value p can be set according to actual conditions, and adjusting the operating frequency of the motor can reduce the resistance of the inner wall to the second injection pump and reduce the friction inside the injection pump.

[0032] By using the relay method in this embodiment, when the first injection pump finishes infusion, the first pressure of the medicine in the second injection pump on the inner wall of the second injection pump when the motor starts at a preset first frequency and pushes the second injection pump can be obtained; the second pressure of the medicine in the second injection pump on the inner wall of the second injection pump when the motor pushes the second injection pump can be obtained in real time; M times the first frequency is used as the second frequency; the third frequency of the motor of the second injection pump at the actual flow rate is obtained, and the actual flow rate is the actual flow rate of the medicine; when the difference between the second pressure and the first pressure is greater than a preset threshold, the relationship between the second frequency and the third frequency is judged to adjust the operating frequency of the motor, thereby reducing the friction in the injection pump and shortening the time required for the injection pump to reach a stable infusion speed, so as to ensure fast and stable flow rate operation when switching the injection pump for injection.

[0033] In the specific embodiments, see Figure 2 , the determining the magnitude relationship between the second frequency and the third frequency includes:

[0034] Step 201: If the second frequency is greater than the third frequency, the motor drives the second injection pump at the second frequency;

[0035] Step 202, obtaining a third pressure of the liquid medicine in the second injection pump on the inner wall of the second injection pump when the motor pushes the second injection pump at the second frequency;

[0036] Step 203, taking the second frequency as the first frequency and the third pressure as the first pressure, returning to the step of determining the magnitude relationship between the second frequency and the third frequency when the difference between the second pressure and the first pressure is greater than a preset threshold, until the second frequency is less than or equal to the third frequency, and the motor drives the second injection pump at the third frequency.

[0037] Specifically, after entering the stable relay state, the motor is given an initial frequency f=F0, and the initial pressure value P0 is recorded. During the operation of the motor, the pressure difference in the syringe (i.e., the difference between the current real-time pressure P and the initial pressure value P0) is detected in real time. If the difference is greater than the set threshold value p, F0 is reduced to half of the original value F'0. At this time, F'0 is compared with the frequency F corresponding to the actual flow rate. real Size, if F'0>F real , then set the motor frequency f = F'0, at this time the motor runs at the frequency of F'0, and continuously detects the pressure difference in the syringe until the reduced frequency is less than the frequency corresponding to the actual flow rate, and then returns to the frequency corresponding to the actual flow rate (f = F real). During the process of gradually reducing the frequency, the friction in the syringe is gradually and slowly eliminated. The purpose of gradually reducing the frequency is to avoid accidents caused by excessive frequency or the frequency is too low to achieve the effect of eliminating the friction of the inner wall of the syringe. After the friction of the inner wall of the syringe is eliminated, the injection pump can quickly reach the set stable flow rate.

[0038] In a specific embodiment, the determining of the magnitude relationship between the second frequency and the third frequency includes: if the second frequency is less than or equal to the third frequency, the motor drives the second injection pump at the third frequency. Specifically, when the second frequency is less than or equal to the third frequency, the motor drives the second injection pump at the third frequency for injection, which can reduce the friction in the injection pump and shorten the time required for the injection pump to reach a stable infusion speed, so as to ensure fast and stable flow rate operation when switching the injection pump for injection.

[0039] In the specific embodiments, see Figure 3 , the method further comprises:

[0040] Step 301, obtaining the number of times M times the first frequency is used as the second frequency;

[0041] Step 302: When the number of times is equal to a preset value, stop adjusting the first frequency;

[0042] Step 303: The motor drives the second injection pump at the third frequency.

[0043] Specifically, the preset value can be set according to actual conditions, such as 5 times or 10 times, etc. When the sum of the frequency reduction times is equal to the preset times, the value of the third frequency is already very small, and the motor is used to drive the second injection pump using the third frequency to ensure the normal use of the second injection pump.

[0044] In a specific embodiment, the method further includes: when the total amount of liquid medicine in all the injection pumps in the infusion system is 0, the infusion system alarms. Specifically, the motor drives the guide rail and the baffle installed on the guide rail, the guide rail is connected to the push rod on the injection pump that pushes the syringe, and the first photoelectric sensor, the second photoelectric sensor and the third photoelectric sensor are equidistantly installed on the injection pump PCB board, and the first photoelectric sensor, the second photoelectric sensor and the third photoelectric sensor are all groove-type photoelectric sensors; a microcontroller is also installed on the injection pump PCB, and the first photoelectric sensor, the photoelectric sensor and the photoelectric sensor are all connected to the microcontroller; the guide rail is driven by the injection pump motor and is connected to the syringe push rod, the guide rail is connected to the baffle, and the three photoelectric sensors are equidistantly fixed on the PCB circuit board of the injection pump, and the signals of the three photoelectric sensors are connected to the microcontroller. When the baffle on the guide rail passes through the groove of the photoelectric sensor, a light signal will be triggered on the sensor and converted into an electrical signal and sent to the microcontroller. During the injection process of the syringe pump, the guide rail and the baffle on the guide rail move with the movement of the syringe, and pass through the grooves on the first photoelectric sensor, the second photoelectric sensor and the third photoelectric sensor in turn. At this time, the light signal is triggered on the first photoelectric sensor, the second photoelectric sensor and the third photoelectric sensor, and converted into an electrical signal, which is input into the microcontroller to complete the injection stroke monitoring of the syringe pump. When the syringe cannot move forward, the infusion system alarms.

[0045] In a specific embodiment, the method further includes: obtaining in real time the pushing speed of the second injection pump pushing the liquid medicine; when the pushing speed is not within a preset standard range, the infusion system issues an alarm. Specifically, the preset standard range can be set according to actual conditions. By obtaining the pushing speed of the second injection pump pushing the liquid medicine, and when the pushing speed is not within the preset standard range, the infusion system issues an alarm to ensure that the infusion speed meets the set value and ensure the safety of the patient.

[0046] In a specific embodiment, the injection pump can also be controlled by a remote control system. Specifically, during operation, medical staff in the interventional room use monitors to monitor the blood pressure, heart rate and other vital signs of multiple patients in real time. When the patient needs to be injected, the medical staff uses the system to make the remote control switching module transmit a signal to the injection pump body, which can change the injection pump body to the remote control mode. The medical staff can control the injection pump body to inject drugs to the patient through the system. When the medical staff inspects, it may be necessary to inject drugs to the patient. Press the switch button on the injection pump body, and the switch button triggers the direct control switch module. The direct control switch module transmits a signal to the injection pump body, which can change the injection pump body to the direct control mode. The medical staff can directly inject drugs to the patient through the injection pump body.

[0047] In a specific embodiment, the value of M is 1 / N, where N is a positive integer greater than 1. The value of N can be set according to actual conditions, and preferably, the value of N is 2.

[0048] In the specific embodiments, see Figure 4 The second embodiment of the present application provides a relay device between injection pumps, the device comprising: a first pressure acquisition module 401, a second pressure acquisition module 402, a first frequency modulation module 403, a frequency acquisition module 404 and a second frequency modulation module 405; the first pressure acquisition module 401 is used to obtain the first pressure of the liquid medicine in the second injection pump on the inner wall of the second injection pump when the motor starts at a preset first frequency and pushes the second injection pump after the first injection pump finishes infusion; the second pressure acquisition module 402 is used to obtain in real time the second pressure of the liquid medicine in the second injection pump on the inner wall of the second injection pump when the motor pushes the second injection pump; the first frequency modulation module 403 is used to use M times the first frequency as the second frequency; the frequency acquisition module 404 is used to obtain the third frequency of the motor of the second injection pump at the real flow rate, and the real flow rate is the actual flow rate of the liquid medicine; the second frequency modulation module 405 is used to determine the magnitude relationship between the second frequency and the third frequency to adjust the operating frequency of the motor when the difference between the second pressure and the first pressure is greater than a preset threshold.

[0049] By using the system in this embodiment, after the first injection pump finishes infusion, the first pressure of the medicine in the second injection pump on the inner wall of the second injection pump when the motor is started at a preset first frequency and pushes the second injection pump can be obtained; the second pressure of the medicine in the second injection pump on the inner wall of the second injection pump when the motor pushes the second injection pump can be obtained in real time; M times the first frequency is used as the second frequency; the third frequency of the motor of the second injection pump at the actual flow rate is obtained, and the actual flow rate is the actual flow rate of the medicine; when the difference between the second pressure and the first pressure is greater than a preset threshold, the relationship between the second frequency and the third frequency is judged to adjust the operating frequency of the motor, thereby reducing the friction in the injection pump and shortening the time required for the injection pump to reach a stable infusion speed, so as to ensure fast and stable flow rate operation when switching the injection pump for injection.

[0050] In a specific embodiment, the device may further include a first alarm module, which is used to generate an alarm when the total amount of liquid medicine in all the injection pumps in the infusion system is zero.

[0051] In a specific embodiment, the device may further include a second alarm module, which is used to obtain in real time the pushing speed of the second injection pump pushing the liquid medicine; and to generate an alarm when the pushing speed is not within a preset standard range.

[0052] In a specific embodiment, the device may also include a voice broadcast module for broadcasting the instructions received by the infusion system to provide feedback on the parameter adjustment actions to be performed by the infusion system, so as to ensure the accuracy of the infusion parameter adjustment to ensure the medical safety of the patient. As a safer measure, the voice broadcast module should broadcast the corresponding units (such as pumping units) at the same time when broadcasting the injection speed and dosage, fully prompting the anesthesiologist to avoid possible errors. It is understandable that the infusion pump can be switched under different pumping modes. Since the pump speed units are also different (such as ml / h, mg / h, μg / kg / min, etc.), when adjusting the pump speed under voice instructions (especially when switching the pumping mode), it will be safer to broadcast the pumping units together.

[0053] In a specific embodiment, the third embodiment of the present application provides a relay device between injection pumps, including a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor executes the steps of the method described in any one of the first embodiments of the present application. By using the device in this embodiment, when the first injection pump finishes infusion, the first pressure of the liquid medicine in the second injection pump on the inner wall of the second injection pump when the motor starts and pushes the second injection pump at a preset first frequency can be obtained; the second pressure of the liquid medicine in the second injection pump on the inner wall of the second injection pump when the motor pushes the second injection pump can be obtained in real time; M times the first frequency is used as the second frequency; the third frequency of the motor of the second injection pump at the real flow rate is obtained, and the real flow rate is the actual flow rate of the liquid medicine; when the difference between the second pressure and the first pressure is greater than the preset threshold, the magnitude relationship between the second frequency and the third frequency is judged to adjust the operating frequency of the motor, thereby reducing the friction in the injection pump and shortening the time required for the injection pump to reach a stable infusion speed, so as to ensure fast and stable flow rate operation when switching the injection pump for injection. In the cascade infusion system, when two syringe pumps switch infusion, the next pump to be connected controls the motor through different frequencies to quickly eliminate the friction in the syringe, so that it can quickly reach the set stable flow rate and achieve the effect of smooth relay. When eliminating the friction in the syringe, the pressure change in the syringe is detected in real time, and the speed of the motor is continuously adjusted to avoid the speed being too low to completely eliminate the friction in the syringe, or the speed being too high to output an unexpected pill dose.

[0054] In a specific embodiment, the fourth embodiment of the present application provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the processor performs the steps of the method described in any one of the first embodiments of the present application. By using the readable storage medium in this embodiment, when the first injection pump finishes the infusion, the first pressure of the liquid medicine in the second injection pump on the inner wall of the second injection pump is obtained when the motor starts and pushes the second injection pump at a preset first frequency; the second pressure of the liquid medicine in the second injection pump on the inner wall of the second injection pump is obtained in real time when the motor pushes the second injection pump; M times the first frequency is used as the second frequency; the third frequency of the motor of the second injection pump at the real flow rate is obtained, and the real flow rate is the actual flow rate of the liquid medicine; when the difference between the second pressure and the first pressure is greater than the preset threshold, the magnitude relationship between the second frequency and the third frequency is determined to adjust the operating frequency of the motor, thereby reducing the friction in the injection pump and shortening the time required for the injection pump to reach a stable infusion speed, so as to ensure fast and stable flow rate operation when switching the injection pump for injection.

[0055] Figure 5 FIG. 1 shows an internal structure diagram of a computer device in an embodiment. The computer device may be a terminal, a server, or a gateway. Figure 5 As shown, the computer device includes a processor, a memory and a network interface connected via a system bus. The memory includes a non-volatile storage medium and an internal memory. The non-volatile storage medium of the computer device stores an operating system and may also store a computer program. When the computer program is executed by the processor, the processor may implement each step in the above method embodiment. The internal memory may also store a computer program. When the computer program is executed by the processor, the processor may implement each step in the above method embodiment. Those skilled in the art will understand that Figure 5 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0056] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the program can be stored in a non-volatile computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0057] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A relay method between syringe pumps, applied to an infusion system, wherein the infusion system comprises an information acquisition system and a plurality of syringe pumps, wherein the syringe pump comprises a motor, and the syringe pump is used for infusion, characterized in that: The method comprises: After the first injection pump finishes infusion, obtaining a first pressure of the liquid medicine in the second injection pump on the inner wall of the second injection pump when the motor is started at a preset first frequency and pushes the second injection pump; acquiring in real time a second pressure exerted by the liquid medicine in the second injection pump on the inner wall of the second injection pump when the motor pushes the second injection pump; Using M times of the first frequency as the second frequency; Acquire a third frequency of the motor of the second injection pump at a true flow rate, where the true flow rate is an actual flow rate of the liquid medicine; When the difference between the second pressure and the first pressure is greater than a preset threshold, the magnitude relationship between the second frequency and the third frequency is determined to adjust the operating frequency of the motor.

2. The relay method between injection pumps according to claim 1, characterized in that: The determining the magnitude relationship between the second frequency and the third frequency includes: If the second frequency is greater than the third frequency, the motor drives the second injection pump at the second frequency; acquiring a third pressure exerted by the liquid medicine in the second injection pump on the inner wall of the second injection pump when the motor pushes the second injection pump at the second frequency; The second frequency is taken as the first frequency and the third pressure is taken as the first pressure, and the step of determining the magnitude relationship between the second frequency and the third frequency when the difference between the second pressure and the first pressure is greater than a preset threshold is returned to, until the second frequency is less than or equal to the third frequency, and the motor drives the second injection pump at the third frequency.

3. The relay method between injection pumps according to claim 1, characterized in that: The determining the magnitude relationship between the second frequency and the third frequency includes: If the second frequency is less than or equal to the third frequency, the motor drives the second injection pump at the third frequency.

4. The relay method between injection pumps according to claim 2, characterized in that: The method further comprises: Obtaining the number of times M times the first frequency is used as the second frequency; When the number of times is equal to a preset value, stop adjusting the first frequency; The motor drives the second syringe pump at the third frequency.

5. The relay method between injection pumps according to claim 1, characterized in that: The method further comprises: When the total amount of liquid medicine in all the injection pumps in the infusion system is 0, the infusion system will alarm.

6. The method for relaying between injection pumps according to claim 1, characterized in that: The method further comprises: Acquire in real time the pushing speed of the second injection pump pushing the liquid medicine; When the pushing speed is not within a preset standard range, the infusion system will give an alarm.

7. The relay method between injection pumps according to any one of claims 1 to 6, characterized in that: The value of M is 1 / N, where N is a positive integer greater than 1.

8. A relay device between injection pumps, characterized in that: The device comprises: a first pressure acquisition module, a second pressure acquisition module, a first frequency modulation module, a frequency acquisition module and a second frequency modulation module; The first pressure acquisition module is used to acquire the first pressure of the liquid medicine in the second injection pump on the inner wall of the second injection pump when the motor is started at a preset first frequency and drives the second injection pump after the first injection pump finishes infusion; The second pressure acquisition module is used to obtain in real time the second pressure of the liquid in the second injection pump on the inner wall of the second injection pump when the motor drives the second injection pump; The first frequency modulation module is used to use M times of the first frequency as the second frequency; The frequency acquisition module is used to acquire the third frequency of the motor of the second injection pump at the real flow rate, where the real flow rate is the actual flow rate of the liquid medicine; The second frequency modulation module is used to determine the magnitude relationship between the second frequency and the third frequency to adjust the operating frequency of the motor when the difference between the second pressure and the first pressure is greater than a preset threshold.

9. A relay device between injection pumps, comprising a memory and a processor, characterized in that: The memory stores a computer program, and when the computer program is executed by the processor, the processor is caused to perform the steps of the method according to any one of claims 1 to 7.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the processor is caused to perform the steps of the method according to any one of claims 1 to 7.

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