WO2023279378A1 - 输注泵的控制系统 - Google Patents

输注泵的控制系统 Download PDF

Info

Publication number
WO2023279378A1
WO2023279378A1 PCT/CN2021/105507 CN2021105507W WO2023279378A1 WO 2023279378 A1 WO2023279378 A1 WO 2023279378A1 CN 2021105507 W CN2021105507 W CN 2021105507W WO 2023279378 A1 WO2023279378 A1 WO 2023279378A1
Authority
WO
WIPO (PCT)
Prior art keywords
infusion
pressure
infusion pump
speed
value
Prior art date
Application number
PCT/CN2021/105507
Other languages
English (en)
French (fr)
Inventor
成志标
Original Assignee
联赢医疗科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 联赢医疗科技有限公司 filed Critical 联赢医疗科技有限公司
Publication of WO2023279378A1 publication Critical patent/WO2023279378A1/zh

Links

Images

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
    • A61M5/142—Pressure infusion, e.g. using pumps
    • 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
    • A61M5/16804—Flow controllers
    • 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
    • A61M5/16831—Monitoring, detecting, signalling or eliminating infusion flow anomalies
    • 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
    • A61M5/16831—Monitoring, detecting, signalling or eliminating infusion flow anomalies
    • A61M5/16854—Monitoring, detecting, signalling or eliminating infusion flow anomalies by monitoring line pressure
    • 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
    • A61M5/16877—Adjusting flow; Devices for setting a flow rate
    • 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
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M2005/14208—Pressure infusion, e.g. using pumps with a programmable infusion control system, characterised by the infusion program

Definitions

  • the invention relates to the technical field of medical transfusion, in particular to a control system of an infusion pump.
  • infusion pumps infusion pumps and/or syringe pumps
  • infusion pumps are usually used for infusion.
  • the infusion pump When the infusion pump is in use, it is necessary to precisely control the infusion pressure so that it cannot exceed the rated pressure of the infusion pump. If the infusion pressure is too high, it will give the patient an excessively high pressure infusion, which will have adverse therapeutic effects on the patient. For example, the infusion puncture area is bulged, etc., which may endanger the life of the patient in severe cases.
  • Patent document discloses a control method of a syringe pump and a syringe pump.
  • a second pressure sensor 720 is provided on the infusion pipeline 530 between the puncture needle 540 and the syringe 50 .
  • the processor 30 acquires the pressure values detected by the first pressure sensor 710 and the second pressure sensor 720 in real time, and compares the acquired pressure values with the preset pressure thresholds.
  • the comparison process includes: if the first pressure If the pressure value detected by the sensor is greater than or equal to the first pressure threshold, the injection is terminated and an alarm is issued; if the pressure value detected by the first pressure sensor is less than the first pressure threshold, and the pressure value detected by the second pressure sensor is greater than or equal to the second pressure threshold , the injection is terminated and an alarm is issued.
  • an embodiment of the present invention provides a control system for an infusion pump, which is used to solve at least one of the above technical problems.
  • An embodiment of the present invention provides a control system for an infusion pump, including: a controller, an infusion pump, and a pressure detection device.
  • the controller is respectively connected to the infusion pump and the pressure detection device in communication.
  • memory and processor for computing and programs the pressure detection device is arranged on the infusion pipeline connecting the puncture needle and the infusion pump, and is used to detect the infusion pressure in the infusion pipeline and send the detected pressure data to the controller;
  • the infusion speed is reduced to suppress the increase of the infusion pressure; when the infusion pressure drops to the second pressure value, then Return to the previous infusion speed. If the infusion pressure exceeds the third pressure value during the speed-down process, stop the infusion or reverse pumping to achieve a rapid drop in pressure.
  • the pressure alarm during the infusion process can be greatly reduced, and the interruption of infusion and the operating workload of nurses can be reduced, so that the infusion process can be continuously and automatically completed.
  • Fig. 1 and Fig. 2 are the structural representations of the syringe pump of prior art
  • Fig. 3 is a schematic structural diagram of a control system of an infusion pump according to an embodiment of the present invention.
  • the present invention provides a control system for an infusion pump.
  • the control system may include: a controller 1, an infusion pump 2 and a pressure detection device 3.
  • the controller 1 is communicated with the infusion pump 2 and the pressure detection device 3 respectively.
  • the infusion pump 2 may include any existing infusion pump and/or syringe pump, for example, it may be the structure of the syringe pump disclosed in the patent documents mentioned in the background art.
  • the infusion pump is detachably arranged on the housing (existing structure), so as to realize stable infusion through the support of the housing. Since the intention of the present invention is not to improve the structure of the infusion pump itself, in order to avoid redundant description, the description of the specific structure and specific application scenarios of the infusion pump is omitted.
  • the pressure detection device 3 is arranged on the infusion pipeline 4 connecting the puncture needle 5 and the infusion pump 2 , for detecting the infusion pressure in the infusion pipeline 4 and sending the detected pressure data to the controller 1 .
  • the pressure detection device 3 can be, for example, a pressure sensor.
  • the pressure detection device 3 in the embodiment of the present invention may be equivalent to the second pressure sensor disclosed in the patent documents in the background art.
  • the controller 1 may include a memory and a processor storing calculations and programs.
  • the controller 1 can communicate with each infusion pump through, for example, the CAN data interface, so as to realize the state data collection of each infusion pump and issue control parameters to each infusion pump.
  • the controller can also communicate with the hospital HIS (hospital Information System) (not shown) and/or CIS (Clinical Information System) (not shown) and other systems to report the infusion data generated by the infusion pump to HIS and/or CIS.
  • hospital HIS hospital Information System
  • CIS Clinical Information System
  • the preset time period T can be set according to user definition.
  • the number M i can be set according to actual conditions, for example, it can be the number of pulses within a preset time period T.
  • the preset pressure threshold PT is a threshold that is preset through multiple tests of the infusion pump before production and in combination with relevant literature.
  • the speed of the infusion pump is controlled to change, it can be realized by sending a corresponding control command to the driver of the infusion pump, and the specific control process can be an existing technology.
  • the coefficients a and b may be determined based on actual conditions.
  • a may be 0.5
  • b may be 0.3.
  • step S300 if ki is less than 0, no deceleration operation is performed, that is, the infusion pump is controlled to perform infusion at the current speed.
  • the technical effect of the above steps S100-S410 is that when the infusion pressure is greater than the first pressure value, for example half of the pressure threshold value, by observing the pressure rise and fall trend for a preset time period, when the pressure is rising, the infusion pump is controlled to perform Decreasing the speed to slow down the pressure rise speed can ensure more accurate judgment. Additionally, ramping down before the pressure reaches the pressure threshold reduces pressure alarms.
  • the first pressure value for example half of the pressure threshold value
  • it also includes:
  • C0 is the preset number of deceleration times, which can be set based on actual needs. In an exemplary embodiment, C0 can be less than or equal to 5, preferably 3. The setting of C0 can prevent the infusion from being unable to be reduced after multiple decelerations Pressure causes endless speed reduction, avoiding unlimited speed reduction from affecting the progress of the infusion.
  • the specific speed reduction is determined according to ki +1 and ki , when 0 ⁇ ki When +1 ⁇ k i , infuse according to speed v i -dv; when k i+1 > k i , infuse according to speed (less than v i -dv) for infusion, so that the infusion pressure drops quickly.
  • C0 can prevent the speed reduction from falling into an infinite loop.
  • step S421 if C is greater than or equal to C0, the infusion pump is controlled to stop the infusion and an alarm is issued.
  • An alarm can be provided, for example, by setting an alarm on the infusion pump, for example, an alarm can be performed by sound.
  • it also includes:
  • Step S430 may be executed in parallel with steps S410 and S420 or executed sequentially.
  • the infusion pump is controlled to stop the infusion or the infusion pump is controlled to reversely draw liquid, so as to achieve rapid reduction of the pressure.
  • the infusion speed is reduced to suppress the increase of the infusion pressure; when the infusion pressure drops to the second pressure value, then Return to the previous infusion speed. If the infusion pressure exceeds the third pressure value during the speed-down process, stop the infusion or reverse pumping to achieve a rapid drop in pressure.
  • the technical solution of the present invention can greatly reduce the pressure alarm during the infusion process, and can reduce the interruption of the infusion and the operating workload of the nurses , so that the infusion process can be continuously and automatically completed.
  • the controller 1 is further configured to execute a computer program to create an infusion buffer page corresponding to each infusion when multiple infusion pumps are used for infusion
  • any infusion item Z i may include The fluid identification MID i , the infusion fluid volume C i and the infusion velocity V i .
  • the infusion pump identifier PID i is the unique identifier of the i-th sequentially used infusion pump P i in the current infusion process.
  • the infusion fluid identifier MID i is the unique identifier of the infusion fluid infused by the infusion pump P i , and the infusion fluid identifier MID i may include the drug name and concentration of the infusion fluid.
  • the infusion volume C i is the infusion volume of the infusion pump P i , and the general unit is ml.
  • the infusion rate V i is the infusion rate of the infusion pump P i , and the general unit is ml/h (milliliter/hour).
  • the value of i ranges from 1 to M, where M is the number of infusion pumps used.
  • the controller will judge whether there is a relay infusion between the two infusion pumps, and if so, control the infusion speed of the two infusion pumps to change according to the preset speed to achieve smooth infusion. continue switching. Specifically, when it is detected that the infusion pump P i needs to start the infusion solution, the controller executes the computer program to achieve the following steps:
  • D1 may be selected based on actual experience.
  • D1 is greater than and are respectively the minimum infusion rates of the infusion pump P i and the infusion pump P i+1 that meet the preset error, so that the infusion rate has room for speed reduction.
  • the minimum infusion rate is an inherent parameter of the infusion pump.
  • the minimum infusion rate can be obtained by checking the description file, but it is not limited thereto. Those skilled in the art can obtain it through any method available in the prior art.
  • T is the preset parallel relay infusion time, that is, the time for infusion pump P i and infusion pump P i+1 to perform simultaneous infusion.
  • T may be a user-defined time, for example, T may be 300 seconds.
  • the control system can send control instructions to the driver of the infusion pump Pi, such as the motor of the peristaltic pump, to drive the infusion pump Pi to infuse the infusion at a constant speed V to the preset infusion volume C i -V * T.
  • control system can send a control command to the motor of the infusion pump P i to drive the motor to drive the camshaft connected to the motor to rotate, so that the slider connected to the camshaft can reciprocate up and down according to a certain sequence and movement law, as Squeeze the intravenous infusion tube sequentially like a wave, so that the liquid in the infusion tube flows at a directional speed V until the infusion volume of the infusion pump P i is C i -V*T. S300.
  • the preset time may be less than T, preferably much less than T.
  • the preset time can be user-defined.
  • the preset time may be 2 seconds, but it is not limited thereto, and the preset time may be any other time interval, as long as smooth relay switching can be satisfied.
  • the speed indicated by the deceleration command and the speed increase command may be the same, that is, the deceleration command is used to instruct the driver of the infusion pump Pi to drive the speed of the infusion pump Pi to reduce the preset speed
  • the speed dv the increase instruction is used to instruct the driver of the infusion pump P i+1 to drive the speed of the infusion pump P i+1 to increase the preset speed dv.
  • the preset speed dv can be determined through the following steps:
  • the rated minimum speed change time of the motor is an inherent parameter of the infusion pump.
  • the rated minimum speed change time of the motor can be obtained by checking the description file, but it is not limited to this. Those skilled in the art can use any method that can be obtained by the existing technology. Obtain.
  • the value following K1 can be selected from the preset speed control value table to form the set K.
  • the preset speed control value table is a table composed of numerical values divisible by 2 or 5 arranged in descending order stored in advance.
  • each time the speed increase/deceleration V/K j can make the infusion speed change at a uniform speed when the infusion pump P i and the infusion pump P i+1 hand over the infusion, can realize smooth relay switching, and can avoid There may be an impact on patients due to device-induced mutations in therapeutic drug concentrations (especially short half-lives).
  • the nurse will hang some more liquid when hanging the infusion bag to avoid blood return. Therefore, when it is detected that the infusion volume of the infusion pump P i is equal to C i , it is necessary to control the infusion pump P i to stop the infusion.
  • the infusion speeds of the two infusion pumps change at a uniform speed, so that smooth relay switching can be achieved, and it is possible to avoid possible treatment problems caused by equipment during the treatment process.

Landscapes

  • 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)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

本发明提供了一种输注泵的控制系统，包括：通信连接的控制器、输注泵和压力检测装置，所述压力检测装置设置在连接穿刺针和输注泵的输液管道上，用于检测输液管道内的输液压力并将检测的压力数据发送给所述控制器；所述控制器用于按照预设时间周期T接收所述压力数据并将接收到的压力数据与第一压力值进行比较，在接收到的压力数据大于第一压力值P1时，控制所述输注泵以低于当前输液速度的速度进行输液，其中，第一压力值P1＝a*PT，0＜a＜1，PT为预设的压力阈值。本发明能大幅度减少输液过程中的压力报警，以及能够减少输液中断和护士的操作工作量，使得输液过程能够连续自动完成。

Description

输注泵的控制系统 技术领域
本发明涉及医疗输液技术领域，特别涉及一种输注泵的控制系统。
背景技术
目前，通常使用输注泵(输液泵和/或注射泵)来进行输液。输注泵在使用时，需要对输液压力进行精确控制，不能使其超过输注泵额定压力，如果输液压力过大，将会给患者过高的压力输液，会对患者产生不良的治疗效果，比如，输液穿刺区域打鼓包了等，严重时可能会危害患者生命。
专利文献(CN112007239A)公开了一种注射泵的控制方法和注射泵，在其公开的技术方案中，如图1和图2所示，注射泵的推手座210上设置有第一压力传感器710，以及在穿刺针540和注射器50之间的输液管道530上设置有第二压力传感器720。在输液过程中，处理器30通过实时获取第一压力传感器710和第二压力传感器720检测的压力值，并将获取的压力值与预设的压力阈值进行比较，比较过程包括：如果第一压力传感器检测的压力值大于等于第一压力阈值，则终止注射并进行报警；如果第一压力传感器检测的压力值小于第一压力阈值，而第二压力传感器检测的压力值大于或等于第二压力阈值，则终止注射并进行报警。
该专利文献提供的技术方案虽然能够在输液压力大于压力阈值时主动停止注射进程并报警，然而，对于一次输入剂量较多且输液速度较慢的药液，在整个输液过程中，可能会存在多次压力报警，由于每次报警后需要中断输液并且需要护士前往处理，重新调速输液会对患者血管造成再次挤压，会增加患者的不适感，影响患者体验，多次输液中断也会影响患者的治疗效果，即，多次压力报警不仅会增加护士的工作量，也会影响患者体验和治疗效果。
因此，亟待需要提供一种能够减少输液过程中的压力报警，减少输液中断，减少护士操作工作量，使输液过程连续自动完成的输液方案。
发明内容
鉴于上述技术问题，本发明实施例提供一种输注泵的控制系统，用于至少解决上述技术问题之一。
本发明采用的技术方案为：
本发明实施例提供一种输注泵的控制系统，包括：控制器、输注泵和压力检测装置，所述控制器分别与输注泵和压力检测装置通信连接，所述控制器包括存储有计算及程序的存储器和处理器，所述压力检测装置设置在连接穿刺针和输注泵的输液管道上，用于检测输液管道内的输液压力并将检测的压力数据发送给所述控制器；所述控制器用于按照预设时间周期T接收所述压力数据并将接收到的压力数据与预设的第一压力值P1进行比较，第一压力值P1＝a*PT，0＜a＜1，PT为预设的压力阈值；其中，在任一计算时刻t i接收到的压力数据P≥P1时，所述处理器执行所述计算机程序以实现如下步骤，其中，i＝1，…，n，n采样周期数，t i+1-t i＝T：
S100，从计算时刻t i起，继续接收预设时间周期T内的M i个压力数据，并获取M i个压力数据的均值AVG i；
S200，获取
Figure PCTCN2021105507-appb-000001
S300，如果k i大于0，则控制输注泵按照速度v i＝v-dv输液至计算时刻t i+1，v为输注泵的当前输液速度值，dv为预设速度控制值。
本发明实施例提供的输注泵的控制系统，在输液压力达到小于压力阈值的第一压力值时，就降低输液速度，以抑制输液压力上升，在输液压力降低至第二压力值时，则恢复到之前的输液速度，如果在降速过程中，输液压力超过第三压力值，则停止输液或者反抽以实现压力的快速下降。与现有技术相比，能够大幅度减少输液过程中的压力报警，以及能够减少输液中断和护士的操作工作量，使得输液过程能够连续自动完成。
附图说明
图1和图2为现有技术的注射泵的结构示意图；
图3为本发明实施例的输注泵的控制系统的结构示意图。
具体实施方式
为使本发明要解决的技术问题、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明提供一种输注泵的控制系统，该控制系统可包括：控制器1、输注泵2和压力检测装置3，控制器1分别与输注泵2和压力检测装置3通信连接。在本发明实施例中，输注泵2可包括现有的任何输液泵和/或注射泵，例如，可为背景技术中提及的专利文献所公开的注射泵结构。输注泵可拆卸地设置壳体(现有结构)上，以通过壳体的支撑实现稳定的输液。由于本发明的意图并不是对输注泵本身的结构进行改进，所以为避免赘述，省略对输注泵的具体结构以及具体应用场景的描述。
在本发明实施例中，压力检测装置3设置在连接穿刺针5和输注泵2的输液管道4上，用于检测输液管道4内的输液压力并将检测的压力数据发送给控制器1。压力检测装置3例如可为压力传感器。本发明实施例中压力检测装置3可等同于背景技术中的专利文献中公开的第二压力传感器。
在本发明实施例中，控制器1可包括存储有计算及程序的存储器和处理器。控制器1能够通过例如CAN数据接口与各输注泵通信连接，实现各输注泵的状态数据采集及下发控制参数给各输注泵，控制器还可通过WIFI通讯接口与医院HIS(医院信息系统)(未图示)和/或CIS(临床信息系统)(未图示)等系统连接，将输注泵产生的输注数据上报给HIS和/或CIS。
进一步地，在本发明一实施例中，控制器1用于按照预设时间周期T接收压力检测装置发送的压力数据，并在每个计算时刻将接收到的压力数据与预设的第一压力值P1进行比较，在接收到的压力数据大于预设的第一压力值P1时，控制所述输注泵以低于当前输液速度的速度进行输液，其中，第一压力值P1＝a*PT，系数a的取值为0到1，即0＜a＜1，PT为预设的压力阈值。预 设时间周期T可根据用户自定义设置。
具体地，控制器1用于在任一计算时刻t i接收到的压力数据P≥P1时，处理器执行执行计算机程序以实现如下步骤，其中，i＝1，…，n，n采样周期数，t i+1-t i＝T：
S100，从计算时刻t i起，继续接收预设时间周期T内的M i个压力数据，并获取M i个压力数据的均值
Figure PCTCN2021105507-appb-000002
P ij为在计算时刻t ij获取的M i个压力数据中的第j个压力值。个数M i可根据实际情况进行设置，例如，可为预设时间周期T内的脉搏次数。
S200，获取系数
Figure PCTCN2021105507-appb-000003
k i为第i个采样周期的趋势系数。
S300，判断k i是否大于0，如果k i大于0，则控制输注泵按照速度v i＝v-dv输液至计算时刻t i+1，v为输注泵的当前输液速度值，dv为预设速度控制值，在一个示例中，dv＝v/N，在一个示意性实施例中，N例如可为10。
S400，获取计算时刻t i+1时的输液压力P i+1，并将获取的输液压力P i+1与预设的第二压力值P2＝b*PT进行比较，0＜b＜a＜1；启动降速次数计数器并控制降速次数计数器的值C加1，C的始化值为0。降速次数计数器可设置在控制器中。
S410，如果P i+1≤b*PT，则控制输注泵的输液速度恢复至速度v。
在本发明实施例中，预设的压力阈值PT为通过输注泵在生产前的多次试验并结合相关文献资料，预先设置的阈值。在控制输注泵改变速度时，可以通过向输注泵的驱动器发送相应的控制指令来实现，具体控制过程可为现有技术。
在本发明实施例中，系数a和b可基于实际情况进行确定，在一个示意性实施例中，a可为0.5，b可为0.3。
进一步地，在步骤S300中，如果k i小于0，则不进行减速操作，即控制输注泵以当前速度进行输液。
上述步骤S100～S410的技术效果在于，在输液压力大于第一压力值例如达到压力阈值的一半时，通过观察一个预设时间周期的压力升降趋势，在压力 呈上升趋势时，控制输注泵进行降速以减缓压力上升速度，能够确保判断更加准确。此外，在压力达到压力阈值之前进行降速，能够减少压力报警。
进一步地，在本发明实施例一实施例中，还包括：
S420，如果P i+1＞P2，则执行如下步骤：
S421，如果C小于C0，从计算时刻t i+1起，继续接收预设时间周期T内的M i+1个压力数据，并获取M i+1个压力数据的均值
Figure PCTCN2021105507-appb-000004
P (i+1)j为在计算时刻t (i+1)j获取的M i+1个压力数据中的第j个压力值。
个数M i+1与M i可相同。C0为预设的降速次数值，可基于实际需要设置，在一个示意性实施例中，C0可小于等于5，优选，可为3，C0的设置能够防止多次降速后仍然不能降低输液压力而造成死循环不停的降速，避免无限制的降速影响输液进度。
S422，获取
Figure PCTCN2021105507-appb-000005
k i+1为第i+1个采样周期的趋势系数。
S423，比较k i+1和k i，如果0≤k i+1≤k i，则控制输注泵按照速度v i-dv进行输液至计算时刻t i+2，然后进入S425，如果k i+1＞k i，则进入步骤S424；
S424，控制输注泵按照速度
Figure PCTCN2021105507-appb-000006
进行输液至计算时刻t i+2；
S425，获取计算时刻t i+2时的压力值P i+2；
S426，如果P i+2≤P2，则控制输注泵的输液速度恢复至速度v；否则，设置i＝i+1，返回S421。
本实施例中，如果通过一个时间周期的降速，输液压力依然没有降低至第二压力值，则需要继续降速，具体降速根据k i+1和k i来确定，当0≤k i+1≤k i时，按照速度v i-dv进行输液，当k i+1＞k i时，则按照速度
Figure PCTCN2021105507-appb-000007
(小于v i-dv)进行输液，以便输液压力快速降下来。同时，通过C0可避免降速陷入死循环。
进一步地，在步骤S421中，如果C大于等于C0，则控制输注泵停止输液，并进行报警。可通过例如设置在输注泵上报警器进行报警，例如，可通过 声音方式进行报警。
进一步地，在本发明实施例一实施例中，还包括：
S430，如果P i+1≥P3，则控制输注泵停止输液或者控制输注泵反向抽液直到P i+1≤P2，P3为预设的第三压力值，P3＝c*PT，0＜b＜a＜c＜1。
系数c可基于实际情况进行确定，在一个示意性实施例中，c可为0.8。步骤S430可与步骤S410和S420并行执行或者依次执行。在步骤S430中，控制输注泵停止输液或者控制输注泵反向抽液的次数最多可为2次，以防止造成死循环不停的往前输注后压力高了就停止输液或者反抽，避免实际一点药液都没数到患者身体里。本实施例中，在P i+1≥P3时，控制输注泵停止输液或者控制输注泵反向抽液，能够实现压力的快速降低。
本发明实施例提供的输注泵的控制系统，在输液压力达到小于压力阈值的第一压力值时，就降低输液速度，以抑制输液压力上升，在输液压力降低至第二压力值时，则恢复到之前的输液速度，如果在降速过程中，输液压力超过第三压力值，则停止输液或者反抽以实现压力的快速下降。本发明的技术方案相对于现有技术中在监测到压力大于压力阈值时就停止输液和报警的技术方案，能够大幅度减少输液过程中的压力报警，以及能够减少输液中断和护士的操作工作量，使得输液过程能够连续自动完成。
在本发明另一实施例中，控制器1还用于，在使用多个输注泵进行输液时，控制器执行计算机程序，创建对应于每次输液的输注缓存页，所述输注缓存页可包括按照输注顺序存储的输注项Z＝(Z 1，Z 2，......，Z M)，任一输注项Z i可包括输注泵标识PID i、输注液标识MID i、输注液量C i和输注速度V i。其中，输注泵标识PID i为当前输注过程中第i个顺序使用的输注泵P i的唯一标识。输注液标识MID i为输注泵P i输注的输注液的唯一标识，输注液标识MID i可包括输注液的药物名称和浓度。输注液量C i为输注泵P i的输注液量，一般单位为ml。输注速度V i为输注泵P i的输注速度，一般单位为ml/h(毫升/小时)。i的取值为1至M，M为使用的输注泵的数目。
其中，在输液过程中，控制器会判断两个输注泵之间是否是中继输液，如果是，则控制该两个输注泵的输注速度按照预设速度进行变化，以实现平滑中继切换。具体地，当监测到需要输注泵P i启动输注液时，控制器执行计算机 程序以实现以下步骤：
S10，如果输注液标识MID i与输注液标识MID i+1相同，且V i＝V i+1＝V>D1，则执行S20；D1为预设输注速度阈值。
在本发明实施例中，D1可根据实际经验选取。优选地，D1大于
Figure PCTCN2021105507-appb-000008
Figure PCTCN2021105507-appb-000009
和
Figure PCTCN2021105507-appb-000010
分别是输注泵P i和输注泵P i+1的满足预设误差的最低输液速度，从而使得输注速度具有降速空间。最低输液速度为输注泵的固有参数，例如，可通过查实描述文件获取最低输液速度，但并不限于此，本领域技术人员可通过现有技术能够获取的任意方式进行获取。
如果输注液标识MID i与输注液标识MID i+1相同，且V i＝V i+1＝V>D1，则表明输注泵P i和接下来即将输液的输注泵P i+1的输注液和输注速度是完全一样的，并且具有降速空间，则进入中继输液切换控制过程。否则，不进入中继输液切换控制过程。
S20，驱动输注泵P i以输注速度V匀速输液到预设输注液量C i-V*T处，启动输注泵P i+1；V*T<min(C i，C i+1)，T为预设的并行中继输液的时间即输注泵P i和输注泵P i+1的同时进行输液的时间。
在本发明实施例中，T可为用户自定义的时间，例如，T可为300秒。控制系统可向输注泵P i的驱动器例如蠕动泵的电机发送控制指令，驱动输注泵P i以输注速度V匀速输液到预设输注液量C i-V*T处。具体地，控制系统可向输注泵P i的电机发送控制指令，驱动电机，以带动与电机连接的凸轮轴转动，使得与凸轮轴连接的滑块按照一定顺序和运动规律上下往复运动，像波一样依次挤压静脉输液管,使输液管中的液体以速度V定向流动，直到输注泵P i的输液量为C i-V*T。S300，每隔固定的预设时间，向输注泵P i和输注泵P i+1的驱动器同时发送速度控制指令，其中，发送给所述输注泵P i的驱动器的速度控制指令为降速指令，发送给所述输注泵P i+1的驱动器的速度控制指令为增速指令。在本发明实施例中，预设时间可小于T，优选地，远小于T。
在本发明实施例中，预设时间可用户自定义。例如，在T为300秒的情况下，预设时间可为2秒，但并不局限于此，预设时间可为任何其它时间间隔，只要能够满足平滑中继切换即可。在本发明实施例中，降速指令和增速指令指示的速度可相同，即，所述降速指令用于指示所述输注泵P i的驱动器驱动输 注泵P i的速度降低预设速度dv，所述增速指令用于指示所述输注泵P i+1的驱动器驱动输注泵P i+1的速度增加预设速度dv。
进一步地，在本发明实施例中，所述预设速度dv可通过如下步骤确定：
S31，基于预设的并行中继输液的时间T以及预设的输注泵P i的驱动器的电机的最小变速时间
Figure PCTCN2021105507-appb-000011
和预设的输注泵P i+1的驱动器的电机的最小变速时间
Figure PCTCN2021105507-appb-000012
确定速度控制值集合K＝(K 1，K 2，...，K n)，其中，速度控制值集合K中的各数值按照降序排列，即K 1＞K 2＞...＞K n；K j＝2 x1*5 x2，x1和x2为整数，即速度控制值集合K中的各数值能够被2或5整除，j的取值为1到n；
Figure PCTCN2021105507-appb-000013
rounddown为向下取整函数，
Figure PCTCN2021105507-appb-000014
和
Figure PCTCN2021105507-appb-000015
可根据输注泵P i和输注泵P i+1的驱动器的电机的额定最小变速时间
Figure PCTCN2021105507-appb-000016
和
Figure PCTCN2021105507-appb-000017
自定义确定。如果电机的额定最小变速时间非常小，那么会导致速度换挡会非常频繁，会影响输注泵的使用寿命。因此，优选地，
Figure PCTCN2021105507-appb-000018
Figure PCTCN2021105507-appb-000019
电机的额定最小变速时间为输注泵的固有参数，例如，可通过查实描述文件获取电机的额定最小变速时间，但并不限于此，本领域技术人员可通过现有技术能够获取的任意方式进行获取。
在本发明实施例中，根据
Figure PCTCN2021105507-appb-000020
Figure PCTCN2021105507-appb-000021
确定集合K中的第一个值后，可从预设的速度控制值表中选取位于K1后面的数值构成集合K。预设的速度控制值表为事先存储的按照降序排列的能够被2或5整除的数值组成的表。
S32，遍历K，如果
Figure PCTCN2021105507-appb-000022
那么dv＝V/K j，
Figure PCTCN2021105507-appb-000023
和
Figure PCTCN2021105507-appb-000024
分别为输注泵P i和输注泵P i+1的满足预设误差的最低输液速度。
在本发明实施例中，在
Figure PCTCN2021105507-appb-000025
时，每次增速/减速V/K j，能够使得在输注泵P i和输注泵P i+1交接输液时，输液速度匀速变化，能够实现平滑中继切换，能够避免在治疗过程可能存在因设备的原因产生治疗药物浓度(尤其是半衰期短)的突变而对患者产生的影响。
S40，判断输注泵P i的输注液量是否等于C i，如果是，执行S50，否则，返回S30。
在实际输液过程中，护士在挂输液袋的时候，会多挂一些液体，以避免回血。因此，在监测到输注泵P i的输注液量等于C i时，需要控制输注泵P i停止 输液。
S50，停止驱动驱动输注泵P i，控制输注泵P i+1以输注速度V匀速输液。
通过上述步骤S10～S50，能够实现输注泵P i和输注泵P i+1的平滑中继切换。
本实施例中，在两个输注泵进行中继切换输液时，使得两个输注泵的输液速度匀速变化，能够实现平滑中继切换，能够避免在治疗过程可能存在因设备的原因产生治疗药物浓度(尤其是半衰期短)的突变而对患者产生的影响。
以上所述实施例，仅为本发明的具体实施方式，用以说明本发明的技术方案，而非对其限制，本发明的保护范围并不局限于此，尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，其依然可以对前述实施例所记载的技术方案进行修改或可轻易想到变化，或者对其中部分技术特征进行等同替换；而这些修改、变化或者替换，并不使相应技术方案的本质脱离本发明实施例技术方案的精神和范围，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应所述以权利要求的保护范围为准。

Claims (9)

  1. 一种输注泵的控制系统，其特征在于，包括：控制器、输注泵和压力检测装置，所述控制器分别与输注泵和压力检测装置通信连接，所述控制器包括存储有计算及程序的存储器和处理器，所述压力检测装置设置在连接穿刺针和输注泵的输液管道上，用于检测输液管道内的输液压力并将检测的压力数据发送给所述控制器；
    所述控制器用于按照预设时间周期T接收所述压力数据并将接收到的压力数据与预设的第一压力值P1进行比较，第一压力值P1＝a*PT，0＜a＜1，PT为预设的压力阈值；其中，在任一计算时刻t i接收到的压力数据P≥P1时，所述处理器执行所述计算机程序以实现如下步骤，其中，i＝1，…，n，n采样周期数，t i+1-t i＝T：
    S100，从计算时刻t i起，继续接收预设时间周期T内的M i个压力数据，并获取M i个压力数据的均值AVG i；
    S200，获取
    Figure PCTCN2021105507-appb-100001
    S300，如果k i大于0，则控制输注泵按照速度v i＝v-dv输液至计算时刻t i+1，v为输注泵的当前输液速度值，dv为预设速度控制值。
  2. 根据权利要求1所述的输注泵的控制系统，其特征在于，
    所述控制器还包括降速次数计数器；
    所述处理器还用于执行所述计算机程序以实现如下步骤：
    S400，获取计算时刻t i+1时的输液压力P i+1，并将获取的输液压力P i+1与预设的第二压力值P2＝b*PT进行比较，0＜b＜a＜1；启动降速次数计数器并控制降速次数计数器的值C加1，C的初始值为0；
    S410，如果P i+1≤P2，则控制输注泵的输液速度恢复至速度v。
  3. 根据权利要求2所述的控制系统，其特征在于，还包括：
    S420，如果P i+1＞P2，则执行如下步骤：
    S421，如果C小于C0，从计算时刻t i+1起，继续接收预设时间周期T内的M i+1个压力数据，并获取M i+1个压力数据的均值AVG i+1；C0为预设的降速次数值；
    S422，获取
    Figure PCTCN2021105507-appb-100002
    S423，比较k i+1和k i，如果0≤k i+1≤k i，则控制输注泵按照速度v i-dv进行输液至计算时刻t i+2，然后进入S425，如果k i+1＞k i，则进入步骤S424；
    S424，控制输注泵按照速度
    Figure PCTCN2021105507-appb-100003
    进行输液至计算时刻t i+2；
    S425，获取计算时刻t i+2时的压力值P i+2；
    S426，如果P i+2≤P2，则控制输注泵的输液速度恢复至速度v；否则，设置i＝i+1，返回S421。
  4. 根据权利要求3所述的控制系统，其特征在于，还包括：在步骤S421中，如果C大于等于C0，则控制输注泵停止输液，并进行报警。
  5. 根据权利要求1所述的控制系统，其特征在于，还包括：
    S430，如果P i+1≥P3，则控制输注泵停止输液或者控制所述输注泵反向抽液直到P i+1≤P2，P3为预设的第三压力值，P3＝c*PT，0＜b＜a＜c＜1。
  6. 根据权利要求2所述的控制系统，其特征在于，a＝0.5。
  7. 根据权利要求2所述的控制系统，其特征在于，b＝0.3。
  8. 根据权利要求5所述的控制系统，其特征在于，c＝0.8。
  9. 根据权利要求1至8任一项所述的控制系统，其特征在于，所述压力检测装置为压力传感器。
PCT/CN2021/105507 2021-07-05 2021-07-09 输注泵的控制系统 WO2023279378A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110759682.4 2021-07-05
CN202110759682.4A CN113456936B (zh) 2021-07-05 2021-07-05 输注泵的控制系统

Publications (1)

Publication Number Publication Date
WO2023279378A1 true WO2023279378A1 (zh) 2023-01-12

Family

ID=77878286

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/105507 WO2023279378A1 (zh) 2021-07-05 2021-07-09 输注泵的控制系统

Country Status (2)

Country Link
CN (1) CN113456936B (zh)
WO (1) WO2023279378A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116721527A (zh) * 2023-08-09 2023-09-08 广州医科大学附属第一医院（广州呼吸中心） 一种适用于医疗输液泵的供电智能监管系统

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114796733A (zh) * 2022-04-13 2022-07-29 苏州恒瑞迪生医疗科技有限公司 一种注射速度控制系统及方法

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5018388A (en) * 1989-06-07 1991-05-28 B. Braun Melsungen Ag Pressure sensor for infusion conduits
US20120265125A1 (en) * 2008-09-12 2012-10-18 K&Y Corporation Infusion Pump System
US20120277717A1 (en) * 2011-04-29 2012-11-01 Medtronic, Inc. Limiting pressure in an implanted catheter
US20180001022A1 (en) * 2015-03-17 2018-01-04 Terumo Kabushiki Kaisha Infusion state detection system
CN108289979A (zh) * 2015-09-11 2018-07-17 史密夫和内修有限公司 用于应用减小的负压治疗的系统和方法
CN108697325A (zh) * 2016-02-23 2018-10-23 里程碑科技有限公司 用于识别目标区的设备和方法
CN109893719A (zh) * 2019-03-05 2019-06-18 东莞友华医院股份有限公司 一种注射泵

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4670006A (en) * 1984-10-16 1987-06-02 Sinnett Kevin B Fluid and air infusion device
US7449008B2 (en) * 1998-04-10 2008-11-11 Milestone Scientific, Inc. Drug infusion device with tissue identification using pressure sensing
JP4492916B2 (ja) * 2003-04-15 2010-06-30 テルモ株式会社 シリンジポンプ
CN106178186A (zh) * 2016-07-27 2016-12-07 珠海市美瑞华医用科技有限公司 一种医用泵阻塞压力智能报警系统和方法
WO2020142454A1 (en) * 2018-12-31 2020-07-09 Chf Solutions, Inc. Blood flow assisting portable arm support

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5018388A (en) * 1989-06-07 1991-05-28 B. Braun Melsungen Ag Pressure sensor for infusion conduits
US20120265125A1 (en) * 2008-09-12 2012-10-18 K&Y Corporation Infusion Pump System
US20120277717A1 (en) * 2011-04-29 2012-11-01 Medtronic, Inc. Limiting pressure in an implanted catheter
US20180001022A1 (en) * 2015-03-17 2018-01-04 Terumo Kabushiki Kaisha Infusion state detection system
CN108289979A (zh) * 2015-09-11 2018-07-17 史密夫和内修有限公司 用于应用减小的负压治疗的系统和方法
CN108697325A (zh) * 2016-02-23 2018-10-23 里程碑科技有限公司 用于识别目标区的设备和方法
CN109893719A (zh) * 2019-03-05 2019-06-18 东莞友华医院股份有限公司 一种注射泵

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116721527A (zh) * 2023-08-09 2023-09-08 广州医科大学附属第一医院（广州呼吸中心） 一种适用于医疗输液泵的供电智能监管系统
CN116721527B (zh) * 2023-08-09 2024-02-20 广州医科大学附属第一医院（广州呼吸中心） 一种适用于医疗输液泵的供电智能监管系统

Also Published As

Publication number Publication date
CN113456936A (zh) 2021-10-01
CN113456936B (zh) 2022-02-08

Similar Documents

Publication Publication Date Title
WO2023279378A1 (zh) 输注泵的控制系统
EP1699509B1 (en) Empty container detection using container side pressure sensing
JP4818933B2 (ja) ２次注入のための薬剤投与安全性の向上
CN107530485B (zh) 具有输注装置压力引发的治疗系统
CA2136419C (en) Blood extraction flow control calibration system and method
US9833561B2 (en) Occlusion detection in delivery of fluids
AU2018204375B2 (en) System and method for verifying alignment of drug pump and fluid supply
JP2005046404A (ja) 気泡検出システム、該気泡検出システムを備えた血液透析回路
WO2022262026A1 (zh) 智能输注工作站
WO2018040324A1 (zh) 枸橼酸抗凝装置及其应用
CN210277862U (zh) 一种全自动静脉滴注系统
CN113456941B (zh) 一种输液控制系统
CN104014011A (zh) 带流速显示与超声检测的滴点注射监控系统
CN219579577U (zh) 一种输液自动切换装置
JPWO2014033782A1 (ja) 体外循環装置、制御装置及びその制御方法
CN117815486A (zh) 一种回血监测自动报警及夹闭静脉通路夹、控制系统及方法
CN117982749A (zh) 镇痛泵的控制装置和控制方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21948872

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE