WO2016106835A1 - Procédé de commande de pompe de perfusion et dispositif - Google Patents

Procédé de commande de pompe de perfusion et dispositif Download PDF

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Publication number
WO2016106835A1
WO2016106835A1 PCT/CN2015/070571 CN2015070571W WO2016106835A1 WO 2016106835 A1 WO2016106835 A1 WO 2016106835A1 CN 2015070571 W CN2015070571 W CN 2015070571W WO 2016106835 A1 WO2016106835 A1 WO 2016106835A1
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WO
WIPO (PCT)
Prior art keywords
speed
peristaltic
compensation
infusion
peristaltic mechanism
Prior art date
Application number
PCT/CN2015/070571
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English (en)
Chinese (zh)
Inventor
谭明
Original Assignee
深圳市科曼医疗设备有限公司
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Publication date
Application filed by 深圳市科曼医疗设备有限公司 filed Critical 深圳市科曼医疗设备有限公司
Publication of WO2016106835A1 publication Critical patent/WO2016106835A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A61M5/172—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body electrical or electronic

Definitions

  • the invention relates to the field of medical instruments, and in particular to a method and a device for controlling an infusion pump.
  • the infusion pump is a kind of intelligent instrument that can accurately control the infusion speed and the infusion volume, and can alarm the abnormal situation such as air bubbles, air liquid and infusion tube blockage and automatically cut off the infusion path.
  • Most of the traditional peristaltic infusion pumps use a motor-driven peristaltic device to continuously squeeze the infusion tube in a fluctuating manner to promote the directional flow of liquid in the infusion tube. Because the peristaltic device in the infusion pump squeezes the characteristics of the infusion tube infusion in a fluctuating manner, the output liquid velocity is unstable, and there are periodic fluctuations, the infusion velocity has a periodic error, and even a brief blood return phenomenon occurs during low-speed infusion. How to achieve smooth infusion and effectively improve the accuracy of infusion is an urgent problem to be solved.
  • a method of controlling an infusion pump comprising:
  • the actual infusion speed for each operating state is compensated for by the compensation percentage and the frequency of the control pulse signal.
  • the step of identifying the plurality of operating states of the peristaltic mechanism during the peristaltic cycle by the rotation of the motor further comprises:
  • the signal when the sensor detects the notch on the positioning blade is taken as an effective signal.
  • the step of identifying a plurality of operating states of the peristaltic mechanism during the peristaltic cycle by rotation of the motor comprises:
  • the step of acquiring the actual infusion speed of each running state of the peristaltic mechanism and the compensation percentage of the preset infusion speed comprises:
  • the step of compensating for the actual infusion speed of each operating state using the compensation percentage and the frequency of the control pulse signal comprises:
  • the actual infusion speed corresponding to each operating state is adjusted.
  • a control device for an infusion pump comprising:
  • a conversion module configured to convert a preset infusion speed into a control pulse signal of a corresponding frequency, so that the motor rotates at a constant speed
  • An identification module configured to identify, by the rotation of the motor, a plurality of operating states of the peristaltic mechanism during a peristaltic cycle
  • An obtaining module configured to obtain a compensation percentage of an actual infusion speed and a preset infusion speed for each running state of the peristaltic mechanism
  • the compensation module is configured to compensate the actual infusion speed of each operating state by using the compensation percentage and the frequency of the control pulse signal.
  • the apparatus further includes:
  • the detecting module is configured to use a signal when the sensor detects the notch on the positioning blade as a valid signal.
  • the identification module comprises:
  • a receiving unit configured to use an operating state of the peristaltic mechanism as an initial state of a peristaltic cycle when receiving a valid signal of the sensor
  • An identification unit configured to identify, from the initial state, a plurality of operating states of the peristaltic mechanism
  • a determining unit configured to obtain each of the operating states of the peristaltic mechanism during a peristaltic cycle when the valid signal is received again.
  • the obtaining module includes:
  • a measuring unit configured to measure an actual infusion speed corresponding to each running state of the peristaltic mechanism when the motor rotates at a constant speed
  • a first calculating unit configured to perform a difference between the actual infusion speed and the preset infusion speed to obtain a compensation speed corresponding to each running state
  • the first calculating unit is further configured to divide the compensation speed by the preset infusion speed to obtain a compensation percentage corresponding to each operating state.
  • the compensation module comprises:
  • a second calculating unit configured to calculate, by using the compensation percentage, a pulse frequency after the control pulse signal is compensated for each operating state
  • An output unit configured to output the compensated pulse frequency, so that each running state of the peristaltic mechanism rotates corresponding to the compensated speed during each peristaltic cycle;
  • the adjusting unit is configured to adjust an actual infusion speed corresponding to each operating state according to the speed compensated by the peristaltic mechanism.
  • the control method and device for the infusion pump convert the preset infusion speed into a control pulse signal corresponding to the frequency, so that the motor rotates at a constant speed; and the plurality of operating states of the peristaltic mechanism during the peristaltic cycle are identified by the rotation of the motor; and the peristaltic mechanism is obtained.
  • the actual infusion rate for each operating state and the percentage of compensation for the preset infusion rate; the actual infusion rate for each operating state is compensated by the compensation percentage and the frequency of the control control pulse signal. Since the preset infusion speed is converted into the control pulse signal of the corresponding frequency, the actual infusion speed is compensated by the actual infusion speed of each running state and the compensation percentage of the preset infusion speed and the frequency of the control pulse signal. Therefore, the infusion speed is stabilized to achieve a smooth infusion, because the actual infusion speed of each operating state in the peristaltic cycle is compensated, the cumulative cycle error is eliminated, and the infusion accuracy is effectively improved.
  • FIG. 1 is a schematic diagram of a hardware environment in an embodiment
  • FIG. 2 is a flow chart showing a method of controlling an infusion pump in an embodiment
  • FIG. 3 is a hardware structural diagram of an embodiment
  • FIG. 4 is a schematic structural view of a control device of an infusion pump in an embodiment
  • Figure 5 is a schematic structural view of a control device for an infusion pump in still another embodiment
  • FIG. 6 is a schematic structural diagram of an identification module in an embodiment
  • FIG. 7 is a schematic structural diagram of an acquisition module in an embodiment
  • FIG. 8 is a schematic structural diagram of a compensation module in an embodiment.
  • a main controller 102 configured to preset the infusion speed
  • the motor controller 104 is configured to convert the preset infusion speed into a control pulse signal corresponding to the frequency after receiving the preset infusion speed, and output the control pulse signal, so that The motor 106 rotates at a constant speed.
  • the rotation of the motor 106 causes the peristaltic mechanism 108 to move.
  • the sensor 110 is used to detect the positioning blade 112 as a valid signal when the sensor 110 detects a unique notch on the positioning blade 112.
  • the operating state of the peristaltic mechanism 108 is taken as the initial state, and each operating state of the peristaltic mechanism in the peristaltic cycle is recognized one by one, and the actual infusion speed and pre-calculation of each operating state are calculated.
  • the compensation percentage of the infusion speed is set, and the compensated pulse frequency corresponding to each operating state is calculated by using the compensation percentage and the frequency of the control pulse signal, and the motor controller 104 outputs the compensated pulse frequency to make the motor 106 compensated.
  • the speed rotation causes the peristaltic mechanism 108 to operate at a corresponding compensated speed for each operating state to compensate for the actual infusion speed for each operating state. This achieves a smooth infusion and effectively improves the accuracy of the infusion.
  • a method of controlling an infusion pump comprising:
  • Step 202 Convert the preset infusion speed into a control pulse signal corresponding to the frequency, so that the motor rotates at a constant speed.
  • the motor controller After obtaining the infusion speed preset by the main controller, the motor controller converts the preset infusion speed into a control pulse signal corresponding to the frequency, and uses the control pulse signal to drive the motor to rotate at a constant speed.
  • the frequency of the control pulse signal is proportional to the rotational speed of the motor, and the rotational speed of the motor is not equal to the preset infusion speed.
  • the motor uses a stepper motor.
  • Step 204 Identify, by the rotation of the motor, a plurality of operating states of the peristaltic mechanism during the peristaltic cycle.
  • the rotation of the motor drives the peristaltic mechanism to operate.
  • the operation of the peristaltic mechanism is periodic, and the operating cycle can also be called a peristaltic cycle.
  • the peristaltic plate is arranged on the peristaltic mechanism, and the running state of the peristaltic piece is the running state of the peristaltic mechanism.
  • the motor controller receives the valid signal of the sensor, uses the running state of the peristaltic piece as the initial state of the peristaltic mechanism in the peristaltic cycle, and starts from the initial state, and identifies each operation of the peristaltic mechanism in the entire peristaltic cycle one by one. status.
  • Step 206 Acquire a compensation percentage of the actual infusion speed and the preset infusion speed of each running state of the peristaltic mechanism.
  • each operating state of the peristaltic mechanism has a corresponding actual infusion rate.
  • the step of obtaining the compensation percentage of the actual infusion speed and the preset infusion speed in each operating state of the peristaltic mechanism comprises: measuring the actual infusion speed corresponding to each operating state of the peristaltic mechanism when the motor rotates at a constant speed; The actual infusion speed is different from the preset infusion speed, and the compensation speed corresponding to each running state is obtained; the compensation speed is divided by the preset infusion speed to obtain the compensation percentage corresponding to each running state.
  • a high-precision balance and corresponding measurement software are used to measure the actual infusion speed for each operating state.
  • the compensation speed actual infusion speed - preset infusion speed, assuming the preset infusion speed is V, the peristaltic mechanism has n operating states, and the actual infusion speed corresponding to the nth operating state is V n compensation
  • Step 208 using the compensation percentage and the frequency of the control control pulse signal to compensate for the actual infusion speed for each operating state.
  • the actual infusion speed of each operating state is compensated by compensating the frequency of the control pulse signal outputted by the motor controller, so that the rotational speed of the motor is compensated, thereby driving each operating state of the peristaltic mechanism corresponding to the compensated speed Exercise to compensate for the actual infusion rate for each operating state.
  • the preset infusion speed is converted into a control pulse signal corresponding to the frequency, so that the motor rotates at a constant speed; the plurality of operating states of the peristaltic mechanism in the peristaltic cycle are identified by the rotation of the motor; and each running state of the peristaltic mechanism is obtained.
  • the actual infusion rate and the percentage of compensation for the preset infusion rate; the actual infusion rate for each operating state is compensated by the compensation percentage and the frequency of the control control pulse signal. Since the preset infusion speed is converted into the control pulse signal of the corresponding frequency, the actual infusion speed is compensated by the actual infusion speed of each running state and the compensation percentage of the preset infusion speed and the frequency of the control pulse signal. Therefore, the infusion speed is stabilized to achieve a smooth infusion, because the actual infusion speed of each operating state in the peristaltic cycle is compensated, the cumulative cycle error is eliminated, and the infusion accuracy is effectively improved.
  • the method prior to the step of identifying the plurality of operating states of the peristaltic mechanism during the peristaltic cycle by rotation of the motor, the method further includes: detecting, as a valid signal, a signal when the sensor detects a notch on the blade.
  • a unique notch is provided on the positioning vane.
  • the motor drives the peristaltic mechanism to move.
  • the detection signal at this time serves as an effective signal.
  • the sensor employs a photosensor.
  • the step of identifying a plurality of operating states of the peristaltic mechanism during the peristaltic cycle by the rotation of the motor comprises: when receiving the valid signal of the sensor, using the operating state of the peristaltic mechanism as an initial state of the peristaltic cycle; The state begins to identify multiple operating states of the peristaltic mechanism; when a valid signal is received again, each operating state of the peristaltic mechanism during a peristaltic cycle is obtained.
  • FIG. 3 it is a hardware structure diagram in one embodiment.
  • the sensor 302 is located below the positioning blade 304, and the signal when detecting the notch on the positioning blade 304 is an effective signal.
  • the motor 306 is positioned above the peristaltic mechanism 308 to drive the peristaltic mechanism 308 to move.
  • a peristaltic piece 310 is disposed on the peristaltic mechanism 308.
  • the operating state of the peristaltic piece 310 is the operating state of the peristaltic mechanism 308.
  • the signal of the sensor 302 is received by scanning or interrupting. When the valid signal of the sensor 302 is received, the running state of the peristaltic mechanism 308 at this time is taken as the initial state of the creep cycle.
  • the creep cycle is the time difference between the effective signals received by the sensor twice.
  • the motor is a stepper motor. According to the frequency of the control pulse signal, the stepping motor rotates at a fixed angle, which is determined according to the characteristics of the motor itself. As the angle of rotation of the stepper motor changes, the operating state of the peristaltic piece also changes. Starting from the initial state, combined with the rotation angle of the stepping motor, the control pulse signal is counted, and each running state of the peristaltic mechanism in the peristaltic cycle is recognized one by one. In another embodiment, a count dial can be added to the motor or peristaltic mechanism.
  • the collection and counting of the counting code signals by the sensors identify each operating state of the peristaltic mechanism in the peristaltic cycle one by one.
  • the running state of the peristaltic mechanism when the sensor valid signal is received is taken as the initial state of the peristaltic cycle, and each running state of the peristaltic cycle is recognized by counting, the missing count or repeated counting is avoided.
  • the problem of cumulative error effectively improves the accuracy of infusion.
  • the step of compensating the actual infusion speed of each operating state by using the compensation percentage and the frequency of the control pulse signal comprises: calculating the pulse frequency of the control pulse signal corresponding to each operating state compensation by using the compensation percentage; and outputting the compensation
  • the subsequent pulse frequency is such that each operating state of the peristaltic mechanism in the peristaltic cycle is respectively rotated corresponding to the compensated speed; and the actual infusion speed corresponding to each operating state is adjusted according to the speed compensated by the peristaltic mechanism.
  • the frequency of the control pulse signal is compensated according to the compensation percentage in the above embodiment, and the compensation frequency is the product of the frequency of the control pulse signal and the compensation percentage, and the compensated frequency is the difference between the frequency of the control pulse signal and the compensation frequency. value.
  • the frequency of the control pulse signal is proportional to the rotation speed of the motor, and the pulse frequency after compensation is output corresponding to each operation state, so that the rotation speed of the motor is also compensated according to the above compensation percentage.
  • a control device for an infusion pump comprising: a scaling module 402, an identification module 404, an acquisition module 406, and a compensation module 408, wherein:
  • the conversion module 402 is configured to convert the preset infusion speed into a control pulse signal of a corresponding frequency, so that the motor rotates at a constant speed.
  • the identification module 404 is configured to identify a plurality of operating states of the peristaltic mechanism during the peristaltic cycle by rotation of the motor.
  • the obtaining module 406 is configured to obtain a compensation percentage of the actual infusion speed and the preset infusion speed for each running state of the peristaltic mechanism.
  • the compensation module 408 is configured to compensate the actual infusion speed of each operating state by using the compensation percentage and the frequency of the control pulse signal.
  • the apparatus further includes: a detecting module 410 for detecting a signal when the sensor detects a notch on the blade as a valid signal.
  • the identification module 404 includes a receiving unit 404a, an identifying unit 404b, and a determining unit 404c, wherein:
  • the receiving unit 404a is configured to use an operating state of the peristaltic mechanism as an initial state of the peristaltic cycle when receiving the valid signal of the sensor.
  • the identification unit 404b is configured to recognize a plurality of operating states of the peristaltic mechanism from an initial state.
  • the determining unit 404c when used to receive the valid signal again, obtains each operating state of the peristaltic mechanism during a peristaltic cycle.
  • the acquisition module 406 includes a measurement unit 406a and a first calculation unit 406b, wherein:
  • the measuring unit 406a is configured to measure an actual infusion speed corresponding to each operating state of the peristaltic mechanism when the motor rotates at a constant speed.
  • the first calculating unit 406b is configured to compare the actual infusion speed with the preset infusion speed to obtain a compensation speed corresponding to each operating state.
  • the first calculating unit 406b is further configured to divide the compensation speed by the preset infusion speed to obtain a compensation percentage corresponding to each operating state.
  • the compensation module 408 includes: a second calculation unit 408a, an output unit 408b, and an adjustment unit 408c, wherein:
  • the second calculating unit 408a is configured to calculate, by using the compensation percentage, the pulse frequency of the control pulse signal corresponding to each running state compensation.
  • the output unit 408b is configured to output the compensated pulse frequency, so that each operation state of the peristaltic mechanism in the peristaltic cycle is respectively rotated corresponding to the compensated speed.
  • the adjusting unit 408c is configured to adjust the actual infusion speed corresponding to each operating state according to the speed compensated by the peristaltic mechanism.

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  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

L'invention concerne un procédé de commande de pompe de perfusion et son dispositif, le procédé consistant : à convertir une vitesse de perfusion prédéfinie en un signal d'impulsion de commande d'une fréquence correspondante pour tourner un moteur à une vitesse constante (202) ; selon la rotation de moteur, à identifier une pluralité d'états de fonctionnement d'un mécanisme péristaltique pendant une période de péristaltisme (204) ; à obtenir un pourcentage de compensation d'une vitesse de perfusion réelle de chaque état de fonctionnement du mécanisme péristaltique et de la vitesse de perfusion prédéfinie (206) ; selon le pourcentage de compensation et une fréquence de signal d'impulsion de commande, à compenser la vitesse de perfusion réelle de chaque état de fonctionnement (208). Le procédé réalise une perfusion uniforme et améliore efficacement la précision de perfusion.
PCT/CN2015/070571 2014-12-31 2015-01-13 Procédé de commande de pompe de perfusion et dispositif WO2016106835A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410856399.3 2014-12-31
CN201410856399.3A CN105797234B (zh) 2014-12-31 2014-12-31 输液泵的控制方法和装置

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Cited By (3)

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CN110283713A (zh) * 2019-06-26 2019-09-27 江苏丰泽生物工程设备制造有限公司 一种利用天平反馈信号控制补料的装置和方法
WO2022094918A1 (fr) * 2020-11-06 2022-05-12 深圳市科曼医疗设备有限公司 Procédé et dispositif de commande de changement de vitesse péristaltique pour pompe à perfusion, pompe à perfusion et support d'enregistrement
CN114776570A (zh) * 2022-03-15 2022-07-22 深圳市好克医疗仪器股份有限公司 输液泵变速调整方法、装置、电子设备及可读存储介质

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CN112206372A (zh) * 2019-07-10 2021-01-12 深圳迈瑞科技有限公司 输液泵、输液控制方法及计算机可读存储介质
CN112370605B (zh) * 2020-11-06 2023-01-31 深圳市科曼医疗设备有限公司 一种输液泵蠕动变速控制方法及装置、输液泵、存储介质
CN113418732B (zh) * 2021-06-22 2022-07-29 湖南比扬医疗科技有限公司 注射器的参数标定方法、标定设备及计算机存储介质
CN114253303B (zh) * 2021-12-06 2024-05-28 广州七喜医疗设备有限公司 一种输液泵非线性流量补偿方法

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DE3247313A1 (de) * 1982-12-21 1984-06-28 Ivac Corp., San Diego, Calif. Verfahren und einrichtung zur steuerung eines fluidflusses
CN102302813A (zh) * 2011-08-26 2012-01-04 叶克斌 智能点滴器
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110283713A (zh) * 2019-06-26 2019-09-27 江苏丰泽生物工程设备制造有限公司 一种利用天平反馈信号控制补料的装置和方法
WO2022094918A1 (fr) * 2020-11-06 2022-05-12 深圳市科曼医疗设备有限公司 Procédé et dispositif de commande de changement de vitesse péristaltique pour pompe à perfusion, pompe à perfusion et support d'enregistrement
CN114776570A (zh) * 2022-03-15 2022-07-22 深圳市好克医疗仪器股份有限公司 输液泵变速调整方法、装置、电子设备及可读存储介质
CN114776570B (zh) * 2022-03-15 2024-04-16 深圳市好克医疗仪器股份有限公司 输液泵变速调整方法、装置、电子设备及可读存储介质

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