Injection pump control method, control system and injection pump

Abstract

The invention belongs to the technical field of medicine, and particularly relates to an instrument for inputting a medium into a human body or onto the human body, in particular to an injection pump control method and system and an injection pump, and the injection pump control method comprises the steps that a control module obtains the amount of residual medicine in an injection tube arranged on the injection pump; the control module obtains soft start time according to the residual drug amount; in the process that the injection pump continuously injects the liquid medicine, when the liquid medicine infusion speed changes, the control module restarts the driving motor in the injection pump according to the soft start time, and then the soft start time is calculated according to the amount of the residual medicine in the injection tube; and the impact risk of medicine injection caused by mismatching of the residual medicine amount and the originally fixed soft start time is avoided.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of medicine, and particularly relates to an apparatus for inputting a medium into or onto a human body, and more particularly relates to an injection pump control method, a control system, and an injection pump. BACKGROUND

[0002] In the medical industry, an injection pump is a device capable of precisely controlling the infusion speed, dose, and time of a liquid medicine, and its core function is to ensure that the medicine enters the patient's body according to a preset accurate plan. According to the use requirements of the injection pump, when the injection speed is adjusted, the current infusion needs to be paused, the parameters are adjusted, and then the injection pump is restarted. In the related art, in order to avoid the phenomenon of "pulse infusion" in which the flow rate exceeds the set value for a short time due to the sudden release of pressure at the moment of starting the injection pump, a fixed soft start time is used. However, when the injection pump is used for a certain period of time, the amount of residual medicine in the injection tube is less than the amount of medicine at the beginning of infusion. At this time, if the infusion speed needs to be adjusted, and the fixed soft start time is still used to control the drive motor, the residual amount of medicine and the soft start time will not match, and the risk of impact of medicine injection will still exist.

[0003] Therefore, how to avoid the above impact risk is a technical problem that needs to be solved in the field.

[0004] It should be noted that the above information disclosed in the background section is only used to understand the background of the present application, and therefore, the above description is not considered to constitute prior art information. SUMMARY

[0005] The embodiments of the present disclosure at least provide an injection pump control method, a control system, and an injection pump.

[0006] In a first aspect, the embodiments of the present disclosure provide an injection pump control method, comprising:

[0007] The control module obtains the amount of residual medicine in the injection tube arranged on the injection pump;

[0008] The control module obtains the soft start time according to the amount of residual medicine;

[0009] During the continuous infusion of the liquid medicine by the injection pump, when the infusion speed changes, the control module restarts the drive motor in the injection pump according to the soft start time.

[0010] In an optional embodiment, the method for the control module to obtain the amount of residual medicine in the injection tube arranged on the injection pump in real time comprises:

[0011] The control module is configured to obtain the movement stroke of the piston handle in the injection tube pushed by the pushing mechanism in the injection pump, and the amount of injected medicine in the injection tube is:

[0012] V0=L·A;

[0013] Wherein, V0 is the amount of drug injected into the syringe; L is the travel distance of the piston handle in the syringe pushed by the propulsion mechanism in the syringe pump; A is the inner cross-sectional area of ​​the syringe;

[0014] The control module obtains the residual drug amount V in the injection tube according to the amount of drug injected in the injection tube;

[0015] V=V 总 -V0;

[0016] Wherein, V is the amount of drug remaining in the syringe; V 总 The preset total amount of medicine.

[0017] In an optional embodiment, the method for the control module to obtain the soft start time according to the residual drug amount includes:

[0018] The control module obtains the soft start time T;

[0019]

[0020] Where V is the amount of drug remaining in the syringe; k is the flow rate adjustment coefficient; Q is the target flow rate after adjustment; c is the viscosity influence coefficient; μ is the dynamic viscosity of the drug solution; r is the inner diameter of the needle of the syringe used; ρ is the density of the drug solution; and X is the needle length of the syringe used.

[0021] In a second aspect, an embodiment of the present disclosure further provides a syringe pump control system, comprising:

[0022] a drug quantity acquisition module configured to acquire the amount of drug remaining in the injection tube provided on the injection pump;

[0023] The soft start time module is configured to obtain the soft start time according to the amount of residual medicine.

[0024] In a third aspect, an embodiment of the present disclosure further provides a non-transitory readable storage medium on which a computer program / instruction is stored, which implements the steps of the above-mentioned injection pump control method when executed by a processor.

[0025] In a fourth aspect, an embodiment of the present disclosure further provides a program product comprising instructions, which, when executed by a device, causes the device to execute the steps of the above-mentioned injection pump control method.

[0026] In a fifth aspect, the present disclosure also provides a syringe pump, comprising:

[0027] a control module, and a drive motor electrically connected to the control module;

[0028] The control module is suitable for controlling the drive motor using the injection pump control method as claimed in claim 1.

[0029] In an optional embodiment, the drive motor is disposed in the housing;

[0030] A screw rod is provided in the housing, the screw rod is connected to the drive motor, and the screw rod is rotatably connected to the housing;

[0031] A pair of sliding rods parallel to the screw rod are provided in the housing, and a slider is slidably provided on the sliding rods, and the slider is threadedly connected to the screw rod;

[0032] The slider is provided with an extension rod, the extension rod is parallel to the slide rod, and the extension rod extends out of the housing;

[0033] One end of the extension rod extending out of the housing is connected to a propulsion mechanism;

[0034] The control module controls the rotation of the screw rod to drive the slider to move on the slide rod, thereby driving the propulsion mechanism to move and push the injection tube.

[0035] In an optional embodiment, a placement position that matches the shape of the outer wall of the injection tube is provided on the outer wall of the housing. When the injection tube is placed in the placement position, the central axis of the injection tube is parallel to the screw rod.

[0036] The limiting mechanism provided in the shell contacts the outer wall of the injection tube to clamp the injection tube.

[0037] In an optional embodiment, the limiting mechanism includes: a moving rod;

[0038] A guide sleeve is provided in the housing, the guide sleeve is perpendicular to the slide rod, the moving rod is provided through the guide sleeve, one end of the moving rod is located in the housing, and the other end extends out of the housing;

[0039] The end of the moving rod extending out of the shell is connected to a clamping block, and a surface of the clamping block close to the outer wall of the shell is provided with a groove adapted to the outer wall of the injection tube;

[0040] A block is connected to one end of the moving rod located in the housing;

[0041] A limit bar parallel to the moving rod is provided on one side of the moving rod in the housing, a sliding groove is provided on the side of the limit bar close to the moving rod, a limit block is provided on the side wall of the block, the limit block extends into the sliding groove, and the limit block is suitable for moving along the sliding groove;

[0042] A spring is connected between the block and the guide sleeve, and the spring is sleeved on the moving rod.

[0043] The beneficial effect of the present invention is that the injection pump control method includes: the control module obtains the residual drug amount in the injection tube set on the injection pump; the control module obtains the soft start time according to the residual drug amount; in the process of the injection pump continuously infusing the drug solution, when the infusion speed of the drug solution changes, the control module restarts the drive motor in the injection pump according to the soft start time, thereby realizing the calculation of the soft start time according to the residual drug amount in the injection tube, avoiding the risk of shock injection caused by the mismatch between the residual drug amount and the originally fixed soft start time.

[0044] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0045] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited herein and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0047] Figure 1 A flowchart of a syringe pump control method provided in an embodiment of the present disclosure;

[0048] Figure 2 A schematic structural diagram of a syringe pump provided in an embodiment of the present disclosure;

[0049] Figure 3 A schematic diagram of the internal structure of a syringe pump provided in an embodiment of the present disclosure;

[0050] Figure 4 A schematic structural diagram of a limiting mechanism provided in an embodiment of the present disclosure.

[0051] In the picture:

[0052] 1 housing, 11 placement position, 12 guide sleeve, 13 limit strip, 14 slide groove;

[0053] 2 driving motor, 21 screw rod, 22 sliding rod, 23 slider, 24 extension rod;

[0054] 3. Promoting institutions;

[0055] 4 limiting mechanism, 41 moving rod, 42 clamping block, 43 groove, 44 block body, 45 limiting block, 46 spring. DETAILED DESCRIPTION

[0056] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0057] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Thus, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are used to "serve as an example, instance, or illustration." Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations, aspects, or designs. Instead, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0058] In the medical industry, a syringe pump is a device that can precisely control the infusion rate, dosage, and time of a drug solution. Its core function is to ensure that the drug enters the patient's body according to a preset precise plan. According to the use requirements of the syringe pump, when adjusting the injection rate, it is necessary to pause the current infusion, adjust the parameters, and then restart. In the related art, in order to avoid the phenomenon of "pulse infusion" in which the flow rate exceeds the set value for a short period of time due to the sudden release of pressure at the moment of starting the syringe pump, a fixed soft start time is used. However, after the syringe pump has been used for a certain period of time, the amount of drug remaining in the syringe is less than the amount of drug at the beginning of the infusion. At this time, if the infusion rate needs to be adjusted, if the fixed soft start time is still used to control the drive motor, the residual drug amount will not match the soft start time, and the risk of drug injection will still exist. The defects existing in the above solutions are the results obtained by the inventors after practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be regarded as the contributions made by the inventors to the present disclosure during the process of this disclosure.

[0059] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0060] Some embodiments of the present application will be described in detail with reference to the drawings, which are shown by way of illustration, and without intent to limit the application. The following embodiments and features can be combined with each other, without conflict, where appropriate.

[0061] As Figure 1 shown, at least one disclosed embodiment provides a syringe pump control method, comprising: a control module acquiring the amount of residual drug in the syringe of the syringe pump; the control module acquiring the soft start time according to the amount of residual drug; during the continuous infusion of the syringe pump, when the infusion speed changes, the control module restarts the drive motor 2 in the syringe pump according to the soft start time, thereby realizing the calculation of the soft start time according to the amount of residual drug in the syringe, and avoiding the impact risk of drug injection caused by the mismatch between the amount of residual drug and the originally fixed soft start time.

[0062] In this embodiment, the soft start time is the time required for the infusion speed of the drive motor 2 to increase from 0 to the currently set infusion speed after starting.

[0063] In this embodiment, the change of the infusion speed is that, during the infusion process, when it is necessary to reset the infusion speed of the syringe pump.

[0064] In an alternative embodiment, the method for the control module to acquire the amount of residual drug in the syringe of the syringe pump in real time comprises: the control module is configured to acquire the movement stroke of the piston handle in the syringe driven by the driving mechanism 3 in the syringe pump, and the amount of injected drug in the syringe is:

[0065] V0=L·A;

[0066] wherein V0 is the amount of injected drug in the syringe, with the unit of m 3 ; L is the movement stroke of the piston handle in the syringe driven by the driving mechanism 3 in the syringe pump, with the unit of m; A is the inner cross-sectional area of the syringe, with the unit of m 2 ; the control module acquires the amount of residual drug in the syringe V according to the amount of injected drug in the syringe;

[0067] V=V 总 -V0;

[0068] wherein V is the amount of residual drug in the syringe, with the unit of m 3 ; V 总 is the total amount of preset drug, which can be directly acquired before the start of drug infusion, with the unit of m 3 .

[0069] In this embodiment, when the drive motor 2 drives the screw 21 to rotate, the control module can record the movement stroke of the screw 21 in real time to reflect the distance moved by the propulsion mechanism 3, that is, the distance the piston handle of the injection tube is pushed in, and the movement stroke of the piston handle in the injection tube pushed by the propulsion mechanism 3 in the injection pump.

[0070] In an optional embodiment, the method for the control module to obtain the soft start time according to the residual drug amount includes: the control module obtains the soft start time T;

[0071]

[0072] Where V is the amount of drug remaining in the syringe; k is the flow rate adjustment coefficient, which is dimensionless and usually takes a value of (0.8-1.05)×10 3 ; Q is the target flow rate after adjustment, in m 3 / s; c is the viscosity influence coefficient, dimensionless, representing the effect of viscosity resistance on the drug solution, usually with a value of 0.01-0.1; μ is the dynamic viscosity of the drug solution, in kg / (m·s); r is the inner diameter of the needle of the syringe used, in m; ρ is the density of the drug solution, in kg / m 3 ; X is the needle length of the syringe used, in meters.

[0073] In this embodiment, when the infusion rate needs to be adjusted, the specific residual amount is 1×10 -5 m 3 of propofol (10 mL), with a target flow rate of 6 × 10 -8 m 3 / s (0.06mL / s), the needle radius is 0.72mm (22G needle), the needle length is 0.01m, the viscosity influence coefficient is 0.01, and the dynamic viscosity of the drug solution is 4×10 -3 kg / (m·s), the density of the liquid is 954kg / m 3 ,but

[0074]

[0075] The soft start time T is 0.41s.

[0076] At least one other disclosed embodiment also provides an injection pump control system, including: a drug amount acquisition module, which is configured to obtain the residual drug amount in the injection tube set on the injection pump; and a soft start time module, which is configured to obtain the soft start time according to the residual drug amount.

[0077] In this embodiment, the above module functional steps can be integrated into the control module.

[0078] At least one other disclosed embodiment further provides a non-transitory readable storage medium having a computer program / instruction stored thereon, which implements the steps of the above-mentioned injection pump control method when executed by a processor.

[0079] At least one other disclosed embodiment further provides a program product comprising instructions, which, when executed by a device, cause the device to perform the steps of the above-described syringe pump control method.

[0080] like Figure 2 As shown, at least one other disclosed embodiment further provides an injection pump, comprising: a control module, and a drive motor 2 electrically connected to the control module; the control module is suitable for controlling the drive motor 2 using the injection pump control method as described in claim 1.

[0081] like Figure 3 As shown, in an optional embodiment, the drive motor 2 is arranged in the shell 1; a screw rod 21 is passed through the shell 1, the screw rod 21 is connected to the drive motor 2, and the screw rod 21 is rotatably connected to the shell 1; a pair of slide rods 22 parallel to the screw rod 21 are provided in the shell 1, and a slider 23 is slidably provided on the slide rod 22, and the slider 23 is threadedly connected to the screw rod 21; an extension rod 24 is provided on the slider 23, and the extension rod 24 is parallel to the slide rod 22, and the extension rod 24 extends out of the shell 1; one end of the extension rod 24 extending out of the shell 1 is connected to the propulsion mechanism 3; the control module controls the rotation of the screw rod 21 to drive the slider 23 to move on the slide rod 22, thereby driving the propulsion mechanism 3 to move and push the injection tube.

[0082] In this embodiment, the drive motor 2 can be connected to the screw 21 through a transmission mechanism such as a gear set. The control module can control the rotation speed of the screw 21 as required, and then control the moving speed of the propulsion mechanism 3 to meet the infusion speed requirements.

[0083] In this embodiment, the propulsion mechanism 3 can adopt an existing related mechanism to clamp the piston handle of the injection tube, so as to stably push the piston handle and accurately maintain the infusion speed.

[0084] In an optional embodiment, a placement position 11 adapted to the shape of the outer wall of the injection tube is provided on the outer wall of the shell 1. When the injection tube is placed in the placement position 11, the central axis of the injection tube is parallel to the screw rod 21; the limiting mechanism 4 provided in the shell 1 contacts the outer wall of the injection tube to clamp the injection tube.

[0085] In this embodiment, the placement position 11 can place the injection tube better and more stably.

[0086] like Figure 4As shown, in an optional embodiment, the limit mechanism 4 includes: a moving rod 41; a guide sleeve 12 is provided in the shell 1, the guide sleeve 12 is perpendicular to the slide rod 22, the moving rod 41 is arranged through the guide sleeve 12, one end of the moving rod 41 is located in the shell 1, and the other end extends out of the shell 1; a clamping block 42 is connected to the end of the moving rod 41 extending out of the shell 1, and a groove 43 is provided on the surface of the clamping block 42 close to the outer wall of the shell 1 that is adapted to the outer wall of the injection tube; a block 44 is connected to the end of the moving rod 41 located in the shell 1; a limit strip 13 parallel to the moving rod 41 is provided on one side of the moving rod 41 in the shell 1, and a sliding groove 14 is provided on the side wall of the block 44, and a limit block 45 is provided on the side wall of the block 44, and the limit block 45 extends into the sliding groove 14, and the limit block 45 is suitable for moving along the sliding groove 14;

[0087] A spring 46 is connected between the block 44 and the guide sleeve 12 , and the spring 46 is sleeved on the moving rod 41 .

[0088] In this embodiment, the syringe can be stably clamped in the placement position 11 by the clamping block 42 .

[0089] In this embodiment, when the clamping block 42 is in the initial state, the spring 46 is in a balanced state, and the space between the clamping block 42 and the placement position 11 is smaller than the outer diameter of the injection tube.

[0090] In this embodiment, when the injection tube needs to be placed, the clamping block 42 can be manually grasped to pull the moving rod 41 out of the shell 1 to a certain length, and then the injection tube can be placed. After the placement is completed, the clamping block 42 is driven by the spring 46 to be close to the outer wall of the injection tube. At this time, the spring 46 is in a compressed state, so that the moving rod 41 tends to extend into the shell 1 to keep the clamping block 42 clamping the injection tube.

[0091] In this embodiment, the control module can be electrically connected to a key module, which is arranged on the outer wall of the housing 1. The moving speed of the propulsion mechanism 3 and the infusion speed can be set through the key module.

[0092] To sum up, the present injection pump control method includes: the control module obtains the residual drug amount in the injection tube set on the injection pump; the control module obtains the soft start time according to the residual drug amount; in the process of the injection pump continuously infusing the drug solution, when the infusion speed of the drug solution changes, the control module restarts the drive motor 2 in the injection pump according to the soft start time, thereby realizing the calculation of the soft start time according to the residual drug amount in the injection tube, avoiding the risk of shock in drug injection caused by the mismatch between the residual drug amount and the originally fixed soft start time.

[0093] The disclosure and other solutions, examples, embodiments, modules, and functional operations described in this document can be implemented in digital electronic circuitry, or in computer software, firmware, or hardware, including the structures disclosed in this document and their structural equivalents, or a combination of one or more thereof. The disclosure and other embodiments can be implemented as one or more computer program products, i.e., one or more modules of computer program instructions encoded on a tangible and non-volatile computer-readable medium, for execution by a data processing apparatus or to control the operation of the data processing apparatus. The computer-readable medium can be a machine-readable storage device, a machine-readable storage substrate, a storage device, a composition of matter that effects a machine-readable propagated signal, or a combination of any one or more thereof. In addition to hardware, the apparatus can also include code that creates an execution environment for a computer program, such as code constituting processor firmware, a protocol stack, a database management system, an operating system, or a combination of any one or more thereof. A propagated signal is an artificially generated signal, such as a machine-generated electrical, optical, or electromagnetic signal, that is generated to encode information for transmission to a suitable receiver device.

[0094] A computer program (also referred to as a program, software, software application, script, or code) may be written in any form of programming language (including compiled or interpreted languages) and may be deployed in any form, including as a standalone program or as a module, component, subroutine, or other unit suitable for use in a computing environment. A computer program does not necessarily correspond to a file in a file system. A program may be stored in a portion of a file that holds other programs or data (e.g., one or more scripts stored in a markup language document), in a single file dedicated to the program, or in multiple coordinated files (e.g., files storing one or more modules, subroutines, or portions of code). A computer program may be deployed for execution on one or more computers, located at one site or distributed across multiple sites and interconnected by a communications network.

[0095] The processes and logic flows described in this document can be performed by one or more programmable processors executing one or more computer programs to perform functions by operating on input data and generating output. The processes and logic flows can also be performed by, and apparatus can also be implemented as, special-purpose logic circuitry, e.g., an FPGA (field programmable gate array) or an ASIC (application-specific integrated circuit).

[0096] For example, processors suitable for executing computer programs include general-purpose and special-purpose microprocessors, as well as any one or more of any type of digital computer. Typically, a processor will receive instructions and data from read-only memory or random access memory, or both. The essential components of a computer are a processor that executes instructions and one or more memory devices that store instructions and data. Typically, a computer will also include one or more mass storage devices for storing data, such as magnetic, magneto-optical, or optical disks, or be operatively coupled to receive data from or transfer data to a mass storage device, or both. However, a computer need not have such devices. Computer-readable media suitable for storing computer program instructions and data include all forms of nonvolatile memory, media, and storage devices, including, for example, semiconductor memory devices, such as erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), and flash memory devices; magnetic disks, such as internal hard disks or removable disks; magneto-optical disks; and compact disk read-only memory (CD ROM) and digital versatile disk read-only memory (DVD-ROM) disks. The processor and memory may be supplemented by, or incorporated into, special-purpose logic circuitry.

[0097] Although several embodiments are provided in this disclosure, it should be understood that the disclosed systems and methods may be embodied in many other specific forms without departing from the spirit or scope of the present disclosure. The present examples are to be considered illustrative rather than restrictive, and the present invention is not to be construed as being limited to the details given. For example, various elements or components may be combined or integrated into another system, or certain features may be omitted or not implemented.

[0098] In the several embodiments provided herein, it should be understood that the disclosed devices and methods may also be implemented in other ways. The device embodiments described above are merely illustrative. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architectures, functions, and operations of the devices, methods, and computer program products according to multiple embodiments of the present invention. In this regard, each box in the flowchart or block diagram may represent a module, program segment, or part of a code, which contains one or more executable instructions for implementing the specified logical functions. It should also be noted that in some alternative implementations, the functions marked in the boxes may also occur in an order different from that marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, or they may sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or flowchart, as well as the combination of boxes in the block diagram and / or flowchart, may be implemented using a dedicated hardware-based system that performs the specified functions or actions, or may be implemented using a combination of dedicated hardware and computer instructions.

[0099] With the above-described preferred embodiments of the present invention as a guide, and with reference to the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. A syringe pump control method, characterized in that: include: During the process of continuous infusion of the drug solution by the syringe pump, when the infusion speed of the drug solution changes, the control module calculates the amount of residual drug in the syringe provided on the syringe pump in real time; The control module obtains the soft start time according to the amount of residual medicine; The control module restarts the driving motor (2) in the syringe pump according to the soft start time.

2. The syringe pump control method according to claim 1, wherein: The method for the control module to calculate the amount of residual medicine in the injection tube provided on the injection pump in real time includes: The control module is configured to obtain the movement stroke of the piston handle in the syringe pushed by the propulsion mechanism (3) in the syringe pump, and the amount of the drug injected into the syringe is: V0=L·A; Wherein, V0 is the amount of drug injected into the syringe; L is the travel distance of the piston handle in the syringe pushed by the propulsion mechanism (3) in the syringe pump; A is the inner cross-sectional area of ​​the syringe; The control module obtains the residual drug amount V in the injection tube according to the amount of drug injected in the injection tube; V=V 总 -V0; Wherein, V is the amount of drug remaining in the syringe; V 总 The preset total amount of medicine.

3. The syringe pump control method according to claim 2, wherein: The method for the control module to obtain the soft start time according to the residual drug amount includes: The control module calculates the soft start time T; Where V is the amount of drug remaining in the syringe; k is the flow rate adjustment coefficient; Q is the target flow rate after adjustment; c is the viscosity influence coefficient; μ is the dynamic viscosity of the drug solution; r is the inner diameter of the needle of the syringe used; ρ is the density of the drug solution; and X is the needle length of the syringe used.

4. A syringe pump control system, characterized in that: include: a drug quantity acquisition module configured to acquire the amount of drug remaining in the injection tube provided on the injection pump; The soft start time module is configured to obtain the soft start time according to the amount of residual medicine.

5. A non-transitory readable storage medium having a computer program / instruction stored thereon, characterized in that: When the computer program / instruction is executed by a processor, the steps of the injection pump control method according to any one of claims 1 to 3 are implemented.

6. A program product comprising instructions, characterized in that When the instruction is executed by a device, the device executes the steps of the injection pump control method according to any one of claims 1 to 3.

7. A syringe pump, characterized in that: include: A control module, and a drive motor (2) electrically connected to the control module; The control module is suitable for controlling the drive motor (2) using the injection pump control method according to any one of claims 1 to 3.

8. The injection pump according to claim 7, wherein: The driving motor (2) is arranged in the housing (1); A screw rod (21) is provided in the housing (1), the screw rod (21) is connected to the drive motor (2), and the screw rod (21) is rotationally connected to the housing (1); A pair of sliding rods (22) parallel to the screw rod (21) are provided in the housing (1); a slider (23) is slidably provided on the sliding rods (22); the slider (23) is threadedly connected to the screw rod (21); An extension rod (24) is provided on the slider (23), the extension rod (24) is parallel to the slide rod (22), and the extension rod (24) extends out of the housing (1); One end of the extension rod (24) extending out of the housing (1) is connected to a propulsion mechanism (3); The control module controls the screw rod (21) to rotate, so as to drive the slider (23) to move on the slide rod (22), thereby driving the propulsion mechanism (3) to move and push the injection tube.

9. The injection pump according to claim 8, wherein: The outer wall of the housing (1) is provided with a placement position (11) adapted to the shape of the outer wall of the injection tube. When the injection tube is placed in the placement position (11), the central axis of the injection tube is parallel to the screw rod (21); The limiting mechanism (4) provided in the housing (1) contacts the outer wall of the injection tube to clamp the injection tube.

10. The injection pump according to claim 9, wherein: The limiting mechanism (4) comprises: a moving rod (41); A guide sleeve (12) is provided in the housing (1), the guide sleeve (12) is perpendicular to the slide rod (22), the moving rod (41) is provided through the guide sleeve (12), one end of the moving rod (41) is located in the housing (1), and the other end extends out of the housing (1); The end of the moving rod (41) extending outside the shell (1) is connected to a clamping block (42), and a groove (43) adapted to the outer wall of the injection tube is formed on a surface of the clamping block (42) close to the outer wall of the shell (1); A block (44) is connected to one end of the moving rod (41) located inside the housing (1); A limiting strip (13) parallel to the moving rod (41) is provided on one side of the moving rod (41) in the housing (1), a sliding groove (14) is provided on the side of the limiting strip (13) close to the moving rod (41), a limiting block (45) is provided on the side wall of the block (44), the limiting block (45) extends into the sliding groove (14), and the limiting block (45) is suitable for moving along the sliding groove (14); A spring (46) is connected between the block (44) and the guide sleeve (12), and the spring (46) is sleeved on the moving rod (41).

Images