WO2022067500A1 - 输液泵阻塞压力检测方法、装置、设备和介质 - Google Patents

输液泵阻塞压力检测方法、装置、设备和介质 Download PDF

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Publication number
WO2022067500A1
WO2022067500A1 PCT/CN2020/118806 CN2020118806W WO2022067500A1 WO 2022067500 A1 WO2022067500 A1 WO 2022067500A1 CN 2020118806 W CN2020118806 W CN 2020118806W WO 2022067500 A1 WO2022067500 A1 WO 2022067500A1
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pressure
real
time
moment
function
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PCT/CN2020/118806
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English (en)
French (fr)
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刘希娟
吴张龙
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深圳市科曼医疗设备有限公司
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Priority to PCT/CN2020/118806 priority Critical patent/WO2022067500A1/zh
Publication of WO2022067500A1 publication Critical patent/WO2022067500A1/zh

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    • 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
    • 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 present application relates to the technical field of medical devices, and in particular, to a method, device, device and medium for detecting the obstruction pressure of an infusion pump.
  • the detection of the blocking pressure of the infusion pump on the market uses the difference method to exclude the pressure of the infusion tube itself, so as to obtain the pressure of the liquid in the infusion tube (ie the blocking pressure) more accurately.
  • some take a fixed value and some take the minimum value continuously.
  • various infusion tubes commonly found on the market including PVC (Polyvinyl chloride, polyvinyl chloride) tubes, all have the same stress relaxation phenomenon (that is, the total deformation of the infusion tube remains unchanged, and the creep increases the plastic deformation and the elastic deformation. a corresponding decrease, while the stress decreases slowly over time).
  • a method for detecting the blocking pressure of an infusion pump which is applied to an infusion system.
  • the infusion system includes an infusion pump and an infusion tube that are connected to each other.
  • a pressure sensor is installed on the outer wall of the infusion tube, and the pressure sensor is used to detect sensing pressure, the method includes:
  • a first sensing pressure detected by the pressure sensor at a first moment and a second sensing pressure detected at a second moment different from the first moment are obtained;
  • the current sensing pressure detected by the pressure sensor at the current moment is acquired, the current infusion tube pressure at the current moment is calculated according to the target pressure function, and the current blocking pressure is calculated according to the current sensing pressure and the current infusion tube pressure.
  • acquiring the real-time sensing pressure detected by the pressure sensor in real time, and updating the pressure function according to the real-time sensing pressure includes:
  • the pressure function is updated based on the real-time sensed pressure and any previous sensed pressure prior to the real-time sensed pressure.
  • the updating of the pressure function according to the real-time sensing pressure and any previous sensing pressure before the real-time sensing pressure includes:
  • the pressure function is updated according to the real-time sensing pressure and the first sensing pressure at the first moment.
  • acquiring the real-time sensing pressure detected by the pressure sensor in real time, and updating the pressure function according to the real-time sensing pressure includes:
  • the difference between the second sensing pressure and the real-time sensing pressure threshold is a first difference
  • the method further includes:
  • a difference pressure threshold smaller than the first difference of the real-time sensing pressure threshold is acquired, and the difference pressure threshold is used as the real-time sensing pressure threshold.
  • acquiring the real-time sensing pressure detected by the pressure sensor in real time, and updating the pressure function according to the real-time sensing pressure further includes:
  • the real-time sensing pressure threshold set at the preset time is used as the result of the pressure function; wherein the preset time is the same as the time when the infusion pump is started.
  • the time difference is greater than or equal to the preset duration.
  • the method further includes:
  • An obstruction pressure detection device is applied to an infusion system, the infusion system includes an infusion pump and an infusion tube connected to each other, a pressure sensor is installed on the outer wall of the infusion tube, and the pressure sensor is used to detect the sensing pressure, so the The device includes:
  • the pressure detection module is configured to acquire the first sensing pressure detected by the pressure sensor at a first moment, and the pressure detected at a second moment different from the first moment after detecting that the infusion pump is started the second sensing pressure;
  • a function coefficient calculation module which calculates the function coefficient of the pressure function of the infusion tube according to the first sensing pressure at the first moment and the second sensing pressure at the second moment; wherein, the pressure function is used to calculate The infusion tube pressure of the infusion tube at different times;
  • a function update module configured to acquire the real-time sensing pressure detected by the pressure sensor in real time, and update the pressure function according to the real-time sensing pressure
  • the blockage pressure calculation module is used for taking the moment when the real-time sensing pressure increase is detected as the target moment, and taking the pressure function at the target moment as the target pressure function of the infusion tube;
  • the current sensing pressure detected at the current moment, the current infusion tube pressure at the current moment is calculated according to the target pressure function, and the current blocking pressure is calculated according to the current sensing pressure and the current infusion tube pressure.
  • a computer-readable storage medium storing a computer program, when the computer program is executed by a processor, the processor causes the processor to perform the following steps:
  • a first sensing pressure detected by the pressure sensor at a first moment and a second sensing pressure detected at a second moment different from the first moment are obtained;
  • the current sensing pressure detected by the pressure sensor at the current moment is acquired, the current infusion tube pressure at the current moment is calculated according to the target pressure function, and the current blocking pressure is calculated according to the current sensing pressure and the current infusion tube pressure.
  • An obstruction pressure detection device includes a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor performs the following steps:
  • a first sensing pressure detected by the pressure sensor at a first moment and a second sensing pressure detected at a second moment different from the first moment are obtained;
  • the current sensing pressure detected by the pressure sensor at the current moment is acquired, the current infusion tube pressure at the current moment is calculated according to the target pressure function, and the current blocking pressure is calculated according to the current sensing pressure and the current infusion tube pressure.
  • the invention provides a method, device, equipment and medium for detecting the blocking pressure of an infusion pump.
  • the above-mentioned method for detecting the blocking pressure of an infusion pump can obtain the pressure of the infusion tube more accurately by fitting the attenuation curve of the infusion tube itself in real time.
  • the accurately obtained infusion tube pressure is excluded, thereby ultimately improving the detection accuracy of the occlusion pressure of the product.
  • FIG. 1 is a schematic flow chart of a method for detecting a blocking pressure of an infusion pump in one embodiment
  • Fig. 2 is the schematic diagram of the pressure function curve in one embodiment
  • FIG. 3 is a schematic structural diagram of an obstruction pressure detection device in one embodiment
  • FIG. 4 is a block diagram of the structure of the occlusion pressure detection device in one embodiment.
  • FIG. 1 is a schematic flowchart of a method for detecting the blocking pressure of an infusion pump in one embodiment.
  • the method for detecting the blocking pressure of an infusion pump is applied to an infusion system.
  • the infusion system includes an infusion pump and an infusion tube that are connected to each other.
  • a pressure sensor is installed on the outer wall. The pressure sensor is used to detect the sensing pressure F.
  • ⁇ F the occlusion pressure
  • the accurate calculation of the occlusion pressure in this embodiment is based on a pressure function that can accurately calculate the pressure of the infusion tube.
  • Step 102 after it is detected that the infusion pump is started, a first sensing pressure detected by the pressure sensor at a first moment and a second sensing pressure detected at a second moment different from the first moment are acquired.
  • a and b are two coefficients required by the pressure decay function, and the pressure decay function is used to calculate the infusion tube pressure of the infusion tube at different times.
  • the first time t 1 is the 2 s after the infusion pump is started
  • the second time is the 10 s after the infusion pump is started.
  • Step 104 Calculate the function coefficient of the pressure function of the infusion tube according to the first sensing pressure at the first moment and the second sensing pressure at the second moment.
  • the coefficients a and b can be obtained by substituting the acquired first sensing pressure F1 detected by the pressure sensor at the first time t1 and the second sensing pressure F2 detected at the second time t2 into the above formulas .
  • step 106 the real-time sensing pressure detected by the pressure sensor is acquired in real time, and the pressure function is updated according to the real-time sensing pressure.
  • the curve 1 is the actual pressure curve of the infusion tube.
  • the curve 2-5 is the fitting pressure curve of the infusion tube, that is, the pressure curve when the coefficients a and b take different values. It can be seen in Figure 2 that when the time t is small, the fitted pressure curve 3-5 is closer to the actual pressure curve 1, and as the time t increases, the fitted pressure curve 2 is closer to the actual pressure Curve 1 is closer. Therefore, the settings of the coefficients a and b determine the accuracy of the results, and the significance of step 106 is that the calculated fitted pressure curve is always closer to the actual pressure curve by continuously correcting the coefficients a and b.
  • the update basis is based on the time interval as a function.
  • the real-time sensed pressure detected by the pressure sensor is acquired at preset time intervals after the second moment.
  • the real-time sensed pressure detected by the pressure sensor is acquired every 30s or 60s.
  • the pressure function is updated according to the real-time sensed pressure and any previous sensed pressure before the real-time sensed pressure.
  • the real-time sensing pressure is detected at time t 4 , and the value is F 4 .
  • the optional previous sensing pressure may be detected at time t 3 , and the value is F 3 ; or detected at time t 2 , and the value is F 2 .
  • the real-time sensed pressure, any previous sensed pressure, and the time corresponding to each place are brought into the formula in step 104, and the coefficients a and b can be updated, thereby realizing the update of the pressure function.
  • only the first sensing pressure at the first moment and the real-time sensing pressure are selected to update the pressure function, because it is experimentally measured that, compared to selecting other previous sensing pressures, according to After updating the fitted pressure function, the first sensing pressure at the first moment is closer to the actual pressure function.
  • the update basis is based on the pressure interval as a function. Specifically, first, a real-time sensing pressure threshold Fn that is smaller than the second sensing pressure is set.
  • the real-time sensing pressure threshold F n is the warning value of the sensing pressure change.
  • the sensing pressure decreases from the second sensing pressure to the real-time sensing pressure threshold F n , it indicates that the change of the infusion pipe pressure is large enough, and it is necessary to perform simulation Update of the resultant pressure function. Therefore, the real-time sensing pressure detected by the pressure sensor is acquired in real time.
  • the real-time sensing pressure is equal to the real-time sensing pressure threshold value F n , according to the real-time sensing pressure F n and the corresponding moment, the first sensing pressure at the first moment pair The pressure function is updated.
  • the update basis is based on an equal pressure interval as a function.
  • the difference between the second sensing pressure F 2 and the real-time sensing pressure threshold value F 3 at the third time t 3 is set as the first difference value FD .
  • the difference pressure threshold value F4 of the first difference FD, and the difference pressure threshold value F4 is used as the real - time sensing pressure threshold value, so as to realize the update of the real-time sensing pressure threshold value. It can be understood that there is a real-time update of the real - time sensing pressure threshold through F5 , F6, etc. at equal pressure intervals, so as to ensure that the fitted pressure curve is always closer to the actual pressure curve.
  • the infusion tube pressure of the infusion tube in view of the fact that the variation range of the infusion tube pressure of the infusion tube gradually decreases with the increase of time per unit time, the infusion tube pressure of the infusion tube basically tends to be stable after a preset time. Therefore, at and after the preset time after the infusion pump is started, the real-time sensing pressure threshold set at the preset time is used as the result of the pressure function, that is, a certain value. In this embodiment, the time difference between the preset time and the start of the infusion pump is greater than or equal to the preset duration, for example, the preset duration is 30 minutes.
  • Step 108 the time when the real-time sensing pressure increase is detected is used as the target time, and the pressure function at the target time is used as the target pressure function of the infusion tube.
  • the target pressure function is a fitting pressure function calculated in this embodiment that is closest to the actual pressure function.
  • Step 110 Obtain the current sensing pressure detected by the pressure sensor at the current moment, calculate the current infusion tube pressure at the current moment according to the target pressure function, and calculate the current blocking pressure according to the current sensing pressure and the current infusion tube pressure.
  • the acquired current sensing pressure is denoted as F realtime
  • a pressure alarm threshold is set, and when the current occlusion pressure is greater than or equal to the preset pressure alarm threshold, an occlusion alarm signal is issued, thereby avoiding the risk of complete occlusion.
  • the above-mentioned method for detecting the blocking pressure of the infusion pump can obtain the pressure of the infusion tube more accurately by fitting the attenuation curve of the infusion tube itself in real time.
  • the accurately obtained infusion tube pressure is excluded, thereby ultimately improving the detection accuracy of the occlusion pressure of the product.
  • an obstruction pressure detection device is proposed, which is applied to an infusion system.
  • the infusion system includes an infusion pump and an infusion tube that are connected to each other.
  • a pressure sensor is installed on the outer wall of the infusion tube.
  • the pressure sensor For detecting sensing pressure, the device includes:
  • the pressure detection module 302 is configured to obtain the first sensing pressure detected by the pressure sensor at the first moment and the second sensing pressure detected at the second moment different from the first moment after detecting that the infusion pump is started ;
  • the function coefficient calculation module 304 calculates the function coefficient of the pressure function of the infusion tube according to the first sensing pressure at the first moment and the second sensing pressure at the second moment; wherein, the pressure function is used to calculate the infusion of the infusion tube at different times pipe pressure;
  • the function update module 306 is used to obtain the real-time sensing pressure detected by the pressure sensor in real time, and update the pressure function according to the real-time sensing pressure;
  • the blocking pressure calculation module 308 is used for taking the moment when the real-time sensing pressure increases as the target moment, and taking the pressure function at the target moment as the target pressure function of the infusion tube; obtaining the current sensing pressure detected by the pressure sensor at the current moment , calculate the current infusion tube pressure at the current moment according to the target pressure function, and calculate the current blocking pressure according to the current sensing pressure and the current infusion tube pressure.
  • the above-mentioned blocking pressure detection device and the above-mentioned infusion pump blocking pressure detection method can obtain the pressure of the infusion pipe more accurately by fitting the attenuation curve of the infusion pipe itself in real time.
  • the accurately obtained infusion tube pressure is excluded, thereby ultimately improving the detection accuracy of the occlusion pressure of the product.
  • the function update module 306 is further specifically configured to: acquire the real-time sensed pressure detected by the pressure sensor at preset time intervals after the second moment; Any previously sensed pressure updates the pressure function.
  • the function updating module 306 is further specifically configured to: update the pressure function according to the real-time sensed pressure and the first sensed pressure at the first moment.
  • the function update module 306 is further specifically configured to: set a real-time sensing pressure threshold; wherein, the real-time sensing pressure threshold is less than the second sensing pressure; obtain the real-time sensing pressure detected by the pressure sensor in real time, when When the real-time sensing pressure is equal to the real-time sensing pressure threshold, the pressure function is updated according to the real-time sensing pressure and the first sensing pressure at the first moment.
  • the difference between the second sensed pressure and the real-time sensed pressure threshold is the first difference; the function update module 306 is further specifically configured to: obtain a difference pressure smaller than the first difference of the real-time sensed pressure threshold Threshold, use the differential pressure threshold as the real-time sensing pressure threshold.
  • the function update module 306 is further specifically configured to: at and after the preset time after the infusion pump is started, use the real-time sensing pressure threshold set at the preset time as the result of the pressure function; wherein the preset time The time difference from the start of the infusion pump is greater than or equal to the preset duration.
  • the occlusion pressure detection further includes: an alarm module, configured to issue an occlusion alarm signal when the current occlusion pressure is greater than or equal to a preset pressure alarm threshold.
  • Figure 4 shows an internal block diagram of an occlusion pressure detection device in one embodiment.
  • the blocking pressure detection device includes a processor, a memory and a network interface connected through a system bus.
  • the memory includes a non-volatile storage medium and an internal memory.
  • the non-volatile storage medium of the occlusion pressure detection device stores an operating system, and also stores a computer program.
  • the processor can implement the method for detecting the occlusion pressure of an infusion pump.
  • a computer program can also be stored in the internal memory, and when the computer program is executed by the processor, can cause the processor to execute the method for detecting the occlusion pressure of the infusion pump.
  • FIG. 4 is only a block diagram of a partial structure related to the solution of the present application, and does not constitute a limitation on the blocking pressure detection device to which the solution of the present application is applied.
  • the pressure detection device may include more or fewer components than shown in the figures, or combine certain components, or have a different arrangement of components.
  • An obstruction pressure detection device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implements the following steps when executing the computer program: after detecting that the infusion pump is started, Obtain the first sensing pressure detected by the pressure sensor at the first moment, and the second sensing pressure detected at the second moment different from the first moment; according to the first sensing pressure at the first moment and the second moment The second sensing pressure is used to calculate the function coefficient of the pressure function of the infusion tube; wherein, the pressure function is used to calculate the infusion tube pressure of the infusion tube at different times; the real-time sensing pressure detected by the pressure sensor is obtained in real time, according to the real-time sensing pressure Update the pressure function; take the moment when the real-time sensing pressure increase is detected as the target moment, and take the pressure function at the target moment as the target pressure function of the infusion tube; obtain the current sensing pressure detected by the pressure sensor at the current moment, according to The target pressure function calculates the current infusion tube pressure at the current
  • acquiring the real-time sensing pressure detected by the pressure sensor in real time, and updating the pressure function according to the real-time sensing pressure includes: acquiring the real-time sensing pressure detected by the pressure sensor at preset time intervals after the second moment. Sense pressure; update the pressure function based on the real-time sensed pressure and any previous sensed pressure prior to the real-time sensed pressure.
  • updating the pressure function according to the real-time sensed pressure and any previous sensed pressure before the real-time sensed pressure includes: pairing the real-time sensed pressure and the first sensed pressure at the first moment The pressure function is updated.
  • the real-time sensing pressure detected by the pressure sensor is acquired in real time, and the pressure function is updated according to the real-time sensing pressure, including: setting a real-time sensing pressure threshold; wherein the real-time sensing pressure threshold is smaller than the second transmission pressure threshold. Sensing pressure; obtain the real-time sensing pressure detected by the pressure sensor in real time, and update the pressure function according to the real-time sensing pressure and the first sensing pressure at the first moment when the real-time sensing pressure is equal to the real-time sensing pressure threshold.
  • the difference between the second sensing pressure and the real-time sensing pressure threshold is the first difference; after the pressure function is updated according to the real-time sensing pressure and the first sensing pressure at the first moment, further The method includes: acquiring a difference pressure threshold smaller than the first difference of the real-time sensing pressure threshold, and using the difference pressure threshold as the real-time sensing pressure threshold.
  • the real-time sensing pressure detected by the pressure sensor is acquired in real time, and the pressure function is updated according to the real-time sensing pressure, further comprising: setting the preset time at and after the preset time after the infusion pump is started
  • the real-time sensing pressure threshold value is used as the result of the pressure function; wherein, the time difference between the preset time and the start of the infusion pump is greater than or equal to the preset duration.
  • the method further includes: when the current occlusion pressure is greater than or equal to a preset pressure alarm threshold, sending an occlusion alarm signal.
  • a computer-readable storage medium stores a computer program, and when the computer program is executed by the processor, the following steps are implemented: after detecting that the infusion pump is started, obtain the first time detected by the pressure sensor at the first moment. a sensing pressure, and a second sensing pressure detected at a second moment different from the first moment; calculating the pressure of the infusion tube according to the first sensing pressure at the first moment and the second sensing pressure at the second moment The function coefficient of the function; among them, the pressure function is used to calculate the pressure of the infusion tube at different times; the real-time sensing pressure detected by the pressure sensor is obtained in real time, and the pressure function is updated according to the real-time sensing pressure; The moment when the sensed pressure increases is taken as the target moment, and the pressure function at the target moment is taken as the target pressure function of the infusion tube; the current sensing pressure detected by the pressure sensor at the current moment is obtained, and the current infusion tube pressure at the current moment is calculated according to the target pressure function , calculate the current
  • acquiring the real-time sensing pressure detected by the pressure sensor in real time, and updating the pressure function according to the real-time sensing pressure includes: acquiring the real-time sensing pressure detected by the pressure sensor at preset time intervals after the second moment. Sense pressure; update the pressure function based on the real-time sensed pressure and any previous sensed pressure prior to the real-time sensed pressure.
  • updating the pressure function according to the real-time sensed pressure and any previous sensed pressure before the real-time sensed pressure includes: pairing the real-time sensed pressure and the first sensed pressure at the first moment The pressure function is updated.
  • the real-time sensing pressure detected by the pressure sensor is acquired in real time, and the pressure function is updated according to the real-time sensing pressure, including: setting a real-time sensing pressure threshold; wherein the real-time sensing pressure threshold is smaller than the second transmission pressure threshold. Sensing pressure; obtain the real-time sensing pressure detected by the pressure sensor in real time, and update the pressure function according to the real-time sensing pressure and the first sensing pressure at the first moment when the real-time sensing pressure is equal to the real-time sensing pressure threshold.
  • the difference between the second sensing pressure and the real-time sensing pressure threshold is the first difference; after the pressure function is updated according to the real-time sensing pressure and the first sensing pressure at the first moment, further The method includes: acquiring a difference pressure threshold smaller than the first difference of the real-time sensing pressure threshold, and using the difference pressure threshold as the real-time sensing pressure threshold.
  • the real-time sensing pressure detected by the pressure sensor is acquired in real time, and the pressure function is updated according to the real-time sensing pressure, further comprising: setting the preset time at and after the preset time after the infusion pump is started
  • the real-time sensing pressure threshold value is used as the result of the pressure function; wherein, the time difference between the preset time and the start of the infusion pump is greater than or equal to the preset duration.
  • the method further includes: when the current occlusion pressure is greater than or equal to a preset pressure alarm threshold, sending an occlusion alarm signal.
  • Nonvolatile memory may include read only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory.
  • Volatile memory may include random access memory (RAM) or external cache memory.
  • RAM is available in various forms such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous chain Road (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.
  • SRAM static RAM
  • DRAM dynamic RAM
  • SDRAM synchronous DRAM
  • DDRSDRAM double data rate SDRAM
  • ESDRAM enhanced SDRAM
  • SLDRAM synchronous chain Road (Synchlink) DRAM
  • SLDRAM synchronous chain Road (Synchlink) DRAM
  • Rambus direct RAM
  • DRAM direct memory bus dynamic RAM
  • RDRAM memory bus dynamic RAM

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Abstract

本申请公开了一种输液泵阻塞压力检测方法，该方法包括：在输液泵启动后，获取压力传感器在第一时刻检测到的第一传感压力，及在不同于第一时刻的第二时刻检测到的第二传感压力。根据第一时刻的第一传感压力及第二时刻的第二传感压力计算输液管的压力函数的函数系数。实时获取压力传感器检测到的实时传感压力，根据实时传感压力对压力函数进行更新。获取压力传感器在当前时刻检测到的当前传感压力，根据目标压力函数计算当前时刻的当前输液管压力，根据当前传感压力及当前输液管压力计算当前阻塞压力。本发明在计算阻塞压力时，排除精确求得的输液管压力，从而最终提高产品的阻塞压力检测精度。此外，还提出了阻塞压力检测装置、设备和存储介质。

Description

输液泵阻塞压力检测方法、装置、设备和介质 技术领域
本申请涉及医疗器械技术领域，尤其涉及输液泵阻塞压力检测方法、装置、设备和介质。
背景技术
目前市面上对输液泵阻塞压力的检测，都是采用差值法来排除输液管本身的压力，从而较为准确的获得输液管中液体的压强(即阻塞压力)。而目前对于初始值的处理，有的是取某一固定值，有的是不断取得最小值。而目前市面上常见的各种输液管，包括PVC(Polyvinyl chloride，聚氯乙烯)管等都存在相同的应力松弛现象(即输液管总变形保持不变，蠕变使塑性变形不断增加，弹性变形相应减少，而应力随时间缓慢降低的现象)。而正是因为输液管高分子材料的这种特性，输液管本身的压力值会不断减小，因此取某一固定值来计算阻塞压力的效果就会很差。而若不断取输液管压力的最小值，也面临着难以准确获取该最小值的问题。
申请内容
基于此，有必要针对上述问题，提供能精确排除输液管压力的输液泵阻塞压力检测方法、装置、设备和介质。
一种输液泵阻塞压力检测的方法，应用于输液系统，所述输液系统包括相互连接的输液泵及输液管，所述输液管的外壁处安装有压力传感器，所述压力传感器用于检测传感压力，所述方法包括：
在检测到所述输液泵启动后，获取所述压力传感器在第一时刻检测到的第一传感压力，及在不同于所述第一时刻的第二时刻检测到的第二传感压力；
根据所述第一时刻的第一传感压力及所述第二时刻的第二传感压力计算 所述输液管的压力函数的函数系数；其中，所述压力函数用于计算所述输液管在不同时刻的输液管压力；
实时获取所述压力传感器检测到的实时传感压力，根据所述实时传感压力对所述压力函数进行更新；
将检测到所述实时传感压力增大的时刻作为目标时刻，将所述目标时刻的所述压力函数作为所述输液管的目标压力函数；
获取所述压力传感器在当前时刻检测到的当前传感压力，根据所述目标压力函数计算当前时刻的当前输液管压力，根据所述当前传感压力及所述当前输液管压力计算当前阻塞压力。
在其中一个实施例中，所述实时获取所述压力传感器检测到的实时传感压力，根据所述实时传感压力对所述压力函数进行更新，包括：
在所述第二时刻后每隔预设时间间隔获取所述压力传感器检测到的实时传感压力；
根据所述实时传感压力及所述在实时传感压力之前的任一在先传感压力对所述压力函数进行更新。
在其中一个实施例中，所述根据所述实时传感压力及所述在实时传感压力之前的任一在先传感压力对所述压力函数进行更新，包括：
根据所述实时传感压力及所述第一时刻的第一传感压力对所述压力函数进行更新。
在其中一个实施例中，所述实时获取所述压力传感器检测到的实时传感压力，根据所述实时传感压力对所述压力函数进行更新，包括：
设定实时传感压力阈值；其中，所述实时传感压力阈值小于所述第二传感压力；
实时获取所述压力传感器检测到的实时传感压力，当所述实时传感压力等于所述实时传感压力阈值时，根据所述实时传感压力及所述第一时刻的第一传感压力对所述压力函数进行更新。
在其中一个实施例中，所述第二传感压力与所述实时传感压力阈值的差值为第一差值；
在所述根据所述实时传感压力及所述第一时刻的第一传感压力对所述压力函数进行更新之后，还包括：
获取小于所述实时传感压力阈值第一差值的差值压力阈值，将所述差值压力阈值作为所述实时传感压力阈值。
在其中一个实施例中，所述实时获取所述压力传感器检测到的实时传感压力，根据所述实时传感压力对所述压力函数进行更新，还包括：
在所述输液泵启动后的预设时刻及之后，将所述预设时刻设定的实时传感压力阈值作为所述压力函数的结果；其中，所述预设时刻与所述输液泵启动的时间差大于或等于预设时长。
在其中一个实施例中，在所述根据所述当前传感压力及所述当前输液管压力计算当前阻塞压力之后，还包括：
一种阻塞压力检测装置，应用于输液系统，所述输液系统包括相互连接的输液泵及输液管，所述输液管的外壁处安装有压力传感器，所述压力传感器用于检测传感压力，所述装置包括：
压力检测模块，用于在检测到所述输液泵启动后，获取所述压力传感器在第一时刻检测到的第一传感压力，及在不同于所述第一时刻的第二时刻检测到的第二传感压力；
函数系数计算模块，根据所述第一时刻的第一传感压力及所述第二时刻的第二传感压力计算所述输液管的压力函数的函数系数；其中，所述压力函数用于计算所述输液管在不同时刻的输液管压力；
函数更新模块，用于实时获取所述压力传感器检测到的实时传感压力，根据所述实时传感压力对所述压力函数进行更新；
阻塞压力计算模块，用于将检测到所述实时传感压力增大的时刻作为目标时刻，将所述目标时刻的所述压力函数作为所述输液管的目标压力函数；获取 所述压力传感器在当前时刻检测到的当前传感压力，根据所述目标压力函数计算当前时刻的当前输液管压力，根据所述当前传感压力及所述当前输液管压力计算当前阻塞压力。
一种计算机可读存储介质，存储有计算机程序，所述计算机程序被处理器执行时，使得所述处理器执行如下步骤：
在检测到所述输液泵启动后，获取所述压力传感器在第一时刻检测到的第一传感压力，及在不同于所述第一时刻的第二时刻检测到的第二传感压力；
根据所述第一时刻的第一传感压力及所述第二时刻的第二传感压力计算所述输液管的压力函数的函数系数；其中，所述压力函数用于计算所述输液管在不同时刻的输液管压力；
实时获取所述压力传感器检测到的实时传感压力，根据所述实时传感压力对所述压力函数进行更新；
将检测到所述实时传感压力增大的时刻作为目标时刻，将所述目标时刻的所述压力函数作为所述输液管的目标压力函数；
获取所述压力传感器在当前时刻检测到的当前传感压力，根据所述目标压力函数计算当前时刻的当前输液管压力，根据所述当前传感压力及所述当前输液管压力计算当前阻塞压力。
一种阻塞压力检测设备，包括存储器和处理器，所述存储器存储有计算机程序，所述计算机程序被所述处理器执行时，使得所述处理器执行如下步骤：
在检测到所述输液泵启动后，获取所述压力传感器在第一时刻检测到的第一传感压力，及在不同于所述第一时刻的第二时刻检测到的第二传感压力；
根据所述第一时刻的第一传感压力及所述第二时刻的第二传感压力计算所述输液管的压力函数的函数系数；其中，所述压力函数用于计算所述输液管在不同时刻的输液管压力；
实时获取所述压力传感器检测到的实时传感压力，根据所述实时传感压力对所述压力函数进行更新；
将检测到所述实时传感压力增大的时刻作为目标时刻，将所述目标时刻的所述压力函数作为所述输液管的目标压力函数；
获取所述压力传感器在当前时刻检测到的当前传感压力，根据所述目标压力函数计算当前时刻的当前输液管压力，根据所述当前传感压力及所述当前输液管压力计算当前阻塞压力。
本发明提供了输液泵阻塞压力检测方法、装置、设备和介质，上述输液泵阻塞压力检测方法，通过实时拟合输液管本身的衰减曲线，从而能够更精确地获得输液管压力。而在计算阻塞压力时，排除精确求得的输液管压力，从而最终提高产品的阻塞压力检测精度。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
其中：
图1为一个实施例中输液泵阻塞压力检测方法的流程示意图；
图2为一个实施例中压力函数曲线的示意图；
图3为一个实施例中阻塞压力检测装置的结构示意图；
图4为一个实施例中阻塞压力检测设备的结构框图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请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申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通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，都属于本申请保护的范围。
如图1所示，图1为一个实施例中输液泵阻塞压力检测方法的流程示意图，本输液泵阻塞压力检测方法应用于输液系统，输液系统包括相互连接的输液泵及输液管，输液管的外壁处安装有压力传感器。该压力传感器用于检测传感压力F。而为准确计算计算阻塞压力ΔF，需考虑输液管压力对阻塞压力计算的干扰F 0，也即ΔF＝F-F 0。而本实施例对于阻塞压力的准确计算是基于一个可准确计算输液管压力的压力函数。
本实施例中输液泵阻塞压力检测方法提供的步骤包括：
步骤102，在检测到输液泵启动后，获取压力传感器在第一时刻检测到的第一传感压力，及在不同于第一时刻的第二时刻检测到的第二传感压力。
通过大量实验研究发现，输液管的压力衰减函数曲线如图2所示，且该压力衰减函数基本都遵循如下方程：
F 0＝a×t b
其中，a和b为该压力衰减函数所需的两个系数，而压力衰减函数用于计算输液管在不同时刻的输液管压力。并且此外可以理解的是，当输液管内的液体正常流通时(不存在阻塞时)，ΔF＝0。也就是说，在输液管内未发生阻塞的前提下满足F＝F 0，例如在检测到输液泵启动之后的一段时间内。因此为求得该压力衰减函数，也即这两个系数，需获取压力传感器在第一时刻t 1检测到的第一传感压力F 1及在第二时刻t 2检测到的第二传感压力F 2。示例性的，该第一时刻t 1为输液泵启动后的第2s，而该第二时刻为输液泵启动后的第10s。
步骤104，根据第一时刻的第一传感压力及第二时刻的第二传感压力计算输液管的压力函数的函数系数。
对上述两个系数a和b进行合并变换后可得：
Figure PCTCN2020118806-appb-000001
将获取到的压力传感器在第一时刻t 1检测到的第一传感压力F 1及在第二时刻t 2检测到的第二传感压力F 2代入上述公式即可求得系数a和b。
步骤106，实时获取压力传感器检测到的实时传感压力，根据实时传感压 力对压力函数进行更新。
如图2所示，其中曲线1为输液管的实际压力曲线。而曲线2-5为输液管的拟合压力曲线，也即当系数a和b取不同值时的压力曲线。在图2中可以看到，当时间t较小时，拟合压力曲线3-5相较于实际压力曲线1更为接近，而随着时间t的增加，拟合压力曲线2相较于实际压力曲线1更为接近。因此系数a和b的设定决定了结果的准确性，步骤106的意义在于通过不断修正系数a和b使得计算得到的拟合压力曲线一直与实际压力曲线较为接近。
在一个具体实施例中，以时间间隔为函数更新依据。具体的，在第二时刻后每隔预设时间间隔获取压力传感器检测到的实时传感压力。示例性的，每隔30s或60s获取压力传感器检测到的实时传感压力。进一步的，根据实时传感压力及在实时传感压力之前的任一在先传感压力对压力函数进行更新。例如，实时传感压力是在t 4时刻检测得到的，值为F 4。则可选的在先传感压力可以是在t 3时刻检测得到的，值为F 3；或是在t 2时刻检测得到的，值为F 2。将实时传感压力、任一的在先传感压力及各地对应的时刻带入步骤104中的公式，即可实现对系数a和b的更新，从而实现对压力函数的更新。在其中一个实施例中，仅选择第一时刻的第一传感压力与实时传感压力对压力函数进行更新，这是因为实验测得，相较于选择其他在先传感压力而言，根据第一时刻的第一传感压力对拟合压力函数进行更新后，更为接近实际压力函数。
在一个具体实施例中，以压力间隔为函数更新依据。具体的，首先设定一小于第二传感压力的实时传感压力阈值F n。该实时传感压力阈值F n是传感压力变化的警戒值，当传感压力从第二传感压力递减到实时传感压力阈值F n，说明输液管压力的变化已足够大，需要进行拟合压力函数的更新。因此实时获取压力传感器检测到的实时传感压力，当实时传感压力等于实时传感压力阈值F n时，根据实时传感压力F n与对应的时刻、第一时刻的第一传感压力对压力函数进行更新。
更具体的，在其中一个实施例中，以等压力间隔为函数更新依据。设定第 二传感压力F 2与第三时刻t 3的实时传感压力阈值F 3的差值为第一差值F D。而在第三时刻t 3，除根据实时传感压力阈值F 3与第一时刻t 1检测到的第一传感压力F 1对压力函数进行更新外，还需获取小于实时传感压力阈值F 3第一差值F D的差值压力阈值F 4，并将该差值压力阈值F 4作为实时传感压力阈值，从而实现对实时传感压力阈值的更新。可以理解的是，后续还存在通过等压力间隔的F 5、F 6等对实时传感压力阈值进行实时更新，从而确保拟合压力曲线一直与实际压力曲线较为接近。
在其中一个实施例中，参考图2，鉴于输液管的输液管压力随着时间的递增单位时间内的变化幅度逐渐减小，而在预设时刻后输液管的输液管压力基本趋于平稳。因此在输液泵启动后的预设时刻及之后，将预设时刻设定的实时传感压力阈值作为压力函数的结果，也即一定值。本实施例中，预设时刻与输液泵启动的时间差是要大于或等于预设时长的，例如预设时长为30分钟。
步骤108，将检测到实时传感压力增大的时刻作为目标时刻，将目标时刻的压力函数作为输液管的目标压力函数。
当检测到实时传感压力增大时，说明输液管内开始阻塞，此时停止对压力函数的更新，将目标时刻的压力函数作为后续计算阻塞压力的目标压力函数，记为F initial＝a×t b，而该目标压力函数中系数a和b为定值。可以理解的是，该目标压力函数为本实施例中计算得到的最接近实际压力函数的一个拟合压力函数。
步骤110，获取压力传感器在当前时刻检测到的当前传感压力，根据目标压力函数计算当前时刻的当前输液管压力，根据当前传感压力及当前输液管压力计算当前阻塞压力。
本实施例中，获取到的当前传感压力记为F realtime，所需计算得到的当前阻塞压力记为F。则满足等式F＝F realtime-F initial。
进一步的，随着当前阻塞压力F的增大，输液管内存在着出现完全阻塞的风险，而这将可能进一步导致输液管爆裂或其他风险的发生。因此，在一个实 施例中，设定一压力报警阈值，当当前阻塞压力大于或等于预设压力报警阈值时，发出阻塞报警信号，从而避免完全阻塞风险的发生。
上述输液泵阻塞压力检测方法，通过实时拟合输液管本身的衰减曲线，从而能够更精确地获得输液管压力。而在计算阻塞压力时，排除精确求得的输液管压力，从而最终提高产品的阻塞压力检测精度。
在一个实施例中，如图3所示，提出了一种阻塞压力检测装置，应用于输液系统，输液系统包括相互连接的输液泵及输液管，输液管的外壁处安装有压力传感器，压力传感器用于检测传感压力，该装置包括：
压力检测模块302，用于在检测到输液泵启动后，获取压力传感器在第一时刻检测到的第一传感压力，及在不同于第一时刻的第二时刻检测到的第二传感压力；
函数系数计算模块304，根据第一时刻的第一传感压力及第二时刻的第二传感压力计算输液管的压力函数的函数系数；其中，压力函数用于计算输液管在不同时刻的输液管压力；
函数更新模块306，用于实时获取压力传感器检测到的实时传感压力，根据实时传感压力对压力函数进行更新；
阻塞压力计算模块308，用于将检测到实时传感压力增大的时刻作为目标时刻，将目标时刻的压力函数作为输液管的目标压力函数；获取压力传感器在当前时刻检测到的当前传感压力，根据目标压力函数计算当前时刻的当前输液管压力，根据当前传感压力及当前输液管压力计算当前阻塞压力。
上述阻塞压力检测装置，上述输液泵阻塞压力检测方法，通过实时拟合输液管本身的衰减曲线，从而能够更精确地获得输液管压力。而在计算阻塞压力时，排除精确求得的输液管压力，从而最终提高产品的阻塞压力检测精度。
在一个实施中，函数更新模块306，还具体用于：在第二时刻后每隔预设时间间隔获取压力传感器检测到的实时传感压力；根据实时传感压力及在实时 传感压力之前的任一在先传感压力对压力函数进行更新。
在一个实施中，函数更新模块306，还具体用于：根据实时传感压力及第一时刻的第一传感压力对压力函数进行更新。
在一个实施中，函数更新模块306，还具体用于：设定实时传感压力阈值；其中，实时传感压力阈值小于第二传感压力；实时获取压力传感器检测到的实时传感压力，当实时传感压力等于实时传感压力阈值时，根据实时传感压力及第一时刻的第一传感压力对压力函数进行更新。
在一个实施中，第二传感压力与实时传感压力阈值的差值为第一差值；函数更新模块306，还具体用于：获取小于实时传感压力阈值第一差值的差值压力阈值，将差值压力阈值作为实时传感压力阈值。
在一个实施中，函数更新模块306，还具体用于：在输液泵启动后的预设时刻及之后，将预设时刻设定的实时传感压力阈值作为压力函数的结果；其中，预设时刻与输液泵启动的时间差大于或等于预设时长。
在一个实施中，阻塞压力检测还包括：报警模块，用于当当前阻塞压力大于或等于预设压力报警阈值时，发出阻塞报警信号。
图4示出了一个实施例中阻塞压力检测设备的内部结构图。如图4所示，该阻塞压力检测设备包括通过系统总线连接的处理器、存储器和网络接口。其中，存储器包括非易失性存储介质和内存储器。该阻塞压力检测设备的非易失性存储介质存储有操作系统，还可存储有计算机程序，该计算机程序被处理器执行时，可使得处理器实现输液泵阻塞压力检测方法。该内存储器中也可储存有计算机程序，该计算机程序被处理器执行时，可使得处理器执行输液泵阻塞压力检测方法。本领域技术人员可以理解，图4中示出的结构，仅仅是与本申请方案相关的部分结构的框图，并不构成对本申请方案所应用于其上的阻塞压力检测设备的限定，具体的阻塞压力检测设备可以包括比图中所示更多或更少的部件，或者组合某些部件，或者具有不同的部件布置。
一种阻塞压力检测设备，包括存储器、处理器以及存储在该存储器中并可 在该处理器上执行的计算机程序，该处理器执行该计算机程序时实现如下步骤：在检测到输液泵启动后，获取压力传感器在第一时刻检测到的第一传感压力，及在不同于第一时刻的第二时刻检测到的第二传感压力；根据第一时刻的第一传感压力及第二时刻的第二传感压力计算输液管的压力函数的函数系数；其中，压力函数用于计算输液管在不同时刻的输液管压力；实时获取压力传感器检测到的实时传感压力，根据实时传感压力对压力函数进行更新；将检测到实时传感压力增大的时刻作为目标时刻，将目标时刻的压力函数作为输液管的目标压力函数；获取压力传感器在当前时刻检测到的当前传感压力，根据目标压力函数计算当前时刻的当前输液管压力，根据当前传感压力及当前输液管压力计算当前阻塞压力。
在一个实施例中，实时获取压力传感器检测到的实时传感压力，根据实时传感压力对压力函数进行更新，包括：在第二时刻后每隔预设时间间隔获取压力传感器检测到的实时传感压力；根据实时传感压力及在实时传感压力之前的任一在先传感压力对压力函数进行更新。
在一个实施例中，根据实时传感压力及在实时传感压力之前的任一在先传感压力对压力函数进行更新，包括：根据实时传感压力及第一时刻的第一传感压力对压力函数进行更新。
在一个实施例中，实时获取压力传感器检测到的实时传感压力，根据实时传感压力对压力函数进行更新，包括：设定实时传感压力阈值；其中，实时传感压力阈值小于第二传感压力；实时获取压力传感器检测到的实时传感压力，当实时传感压力等于实时传感压力阈值时，根据实时传感压力及第一时刻的第一传感压力对压力函数进行更新。
在一个实施例中，第二传感压力与实时传感压力阈值的差值为第一差值；在根据实时传感压力及第一时刻的第一传感压力对压力函数进行更新之后，还包括：获取小于实时传感压力阈值第一差值的差值压力阈值，将差值压力阈值作为实时传感压力阈值。
在一个实施例中，实时获取压力传感器检测到的实时传感压力，根据实时传感压力对压力函数进行更新，还包括：在输液泵启动后的预设时刻及之后，将预设时刻设定的实时传感压力阈值作为压力函数的结果；其中，预设时刻与输液泵启动的时间差大于或等于预设时长。
在一个实施例中，在根据当前传感压力及当前输液管压力计算当前阻塞压力之后，还包括：当当前阻塞压力大于或等于预设压力报警阈值时，发出阻塞报警信号。
一种计算机可读存储介质，该计算机可读存储介质存储有计算机程序，该计算机程序被处理器执行时实现如下步骤：在检测到输液泵启动后，获取压力传感器在第一时刻检测到的第一传感压力，及在不同于第一时刻的第二时刻检测到的第二传感压力；根据第一时刻的第一传感压力及第二时刻的第二传感压力计算输液管的压力函数的函数系数；其中，压力函数用于计算输液管在不同时刻的输液管压力；实时获取压力传感器检测到的实时传感压力，根据实时传感压力对压力函数进行更新；将检测到实时传感压力增大的时刻作为目标时刻，将目标时刻的压力函数作为输液管的目标压力函数；获取压力传感器在当前时刻检测到的当前传感压力，根据目标压力函数计算当前时刻的当前输液管压力，根据当前传感压力及当前输液管压力计算当前阻塞压力。
在一个实施例中，实时获取压力传感器检测到的实时传感压力，根据实时传感压力对压力函数进行更新，包括：在第二时刻后每隔预设时间间隔获取压力传感器检测到的实时传感压力；根据实时传感压力及在实时传感压力之前的任一在先传感压力对压力函数进行更新。
在一个实施例中，根据实时传感压力及在实时传感压力之前的任一在先传感压力对压力函数进行更新，包括：根据实时传感压力及第一时刻的第一传感压力对压力函数进行更新。
在一个实施例中，实时获取压力传感器检测到的实时传感压力，根据实时传感压力对压力函数进行更新，包括：设定实时传感压力阈值；其中，实时传 感压力阈值小于第二传感压力；实时获取压力传感器检测到的实时传感压力，当实时传感压力等于实时传感压力阈值时，根据实时传感压力及第一时刻的第一传感压力对压力函数进行更新。
在一个实施例中，第二传感压力与实时传感压力阈值的差值为第一差值；在根据实时传感压力及第一时刻的第一传感压力对压力函数进行更新之后，还包括：获取小于实时传感压力阈值第一差值的差值压力阈值，将差值压力阈值作为实时传感压力阈值。
在一个实施例中，实时获取压力传感器检测到的实时传感压力，根据实时传感压力对压力函数进行更新，还包括：在输液泵启动后的预设时刻及之后，将预设时刻设定的实时传感压力阈值作为压力函数的结果；其中，预设时刻与输液泵启动的时间差大于或等于预设时长。
在一个实施例中，在根据当前传感压力及当前输液管压力计算当前阻塞压力之后，还包括：当当前阻塞压力大于或等于预设压力报警阈值时，发出阻塞报警信号。
需要说明的是，上述输液泵阻塞压力检测方法、装置、设备及计算机可读存储介质属于一个总的发明构思，输液泵阻塞压力检测方法、装置、设备及计算机可读存储介质实施例中的内容可相互适用。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机程序来指令相关的硬件来完成，该程序可存储于一非易失性计算机可读取存储介质中，该程序在执行时，可包括如上述各方法的实施例的流程。其中，本申请所提供的各实施例中所使用的对存储器、存储、数据库或其它介质的任何引用，均可包括非易失性和/或易失性存储器。非易失性存储器可包括只读存储器(ROM)、可编程ROM(PROM)、电可编程ROM(EPROM)、电可擦除可编程ROM(EEPROM)或闪存。易失性存储器可包括随机存取存储器(RAM)或者外部高速缓冲存储器。作为说明而非局限，RAM以多种形式可得，诸如静态RAM(SRAM)、动态RAM(DRAM)、同步DRAM(SDRAM)、双 数据率SDRAM(DDRSDRAM)、增强型SDRAM(ESDRAM)、同步链路(Synchlink)DRAM(SLDRAM)、存储器总线(Rambus)直接RAM(RDRAM)、直接存储器总线动态RAM(DRDRAM)、以及存储器总线动态RAM(RDRAM)等。
以上实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对本申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (10)

  1. 一种输液泵阻塞压力检测的方法，其特征在于，应用于输液系统，所述输液系统包括相互连接的输液泵及输液管，所述输液管的外壁处安装有压力传感器，所述压力传感器用于检测传感压力，所述方法包括：
    在检测到所述输液泵启动后，获取所述压力传感器在第一时刻检测到的第一传感压力，及在不同于所述第一时刻的第二时刻检测到的第二传感压力；
    根据所述第一时刻的第一传感压力及所述第二时刻的第二传感压力计算所述输液管的压力函数的函数系数；其中，所述压力函数用于计算所述输液管在不同时刻的输液管压力；
    实时获取所述压力传感器检测到的实时传感压力，根据所述实时传感压力对所述压力函数进行更新；
    将检测到所述实时传感压力增大的时刻作为目标时刻，将所述目标时刻的所述压力函数作为所述输液管的目标压力函数；
    获取所述压力传感器在当前时刻检测到的当前传感压力，根据所述目标压力函数计算当前时刻的当前输液管压力，根据所述当前传感压力及所述当前输液管压力计算当前阻塞压力。
  2. 根据权利要求1所述的方法，其特征在于，所述实时获取所述压力传感器检测到的实时传感压力，根据所述实时传感压力对所述压力函数进行更新，包括：
    在所述第二时刻后每隔预设时间间隔获取所述压力传感器检测到的实时传感压力；
    根据所述实时传感压力及所述在实时传感压力之前的任一在先传感压力对所述压力函数进行更新。
  3. 根据权利要求2所述的方法，其特征在于，所述根据所述实时传感压力及所述在实时传感压力之前的任一在先传感压力对所述压力函数进行更新，包括：
    根据所述实时传感压力及所述第一时刻的第一传感压力对所述压力函数进行更新。
  4. 根据权利要求1所述的方法，其特征在于，所述实时获取所述压力传感器检测到的实时传感压力，根据所述实时传感压力对所述压力函数进行更新，包括：
    设定实时传感压力阈值；其中，所述实时传感压力阈值小于所述第二传感压力；
    实时获取所述压力传感器检测到的实时传感压力，当所述实时传感压力等于所述实时传感压力阈值时，根据所述实时传感压力及所述第一时刻的第一传感压力对所述压力函数进行更新。
  5. 根据权利要求4所述的方法，其特征在于，所述第二传感压力与所述实时传感压力阈值的差值为第一差值；
    在所述根据所述实时传感压力及所述第一时刻的第一传感压力对所述压力函数进行更新之后，还包括：
    获取小于所述实时传感压力阈值第一差值的差值压力阈值，将所述差值压力阈值作为所述实时传感压力阈值。
  6. 根据权利要求4所述的方法，其特征在于，所述实时获取所述压力传感器检测到的实时传感压力，根据所述实时传感压力对所述压力函数进行更新，还包括：
    在所述输液泵启动后的预设时刻及之后，将所述预设时刻设定的实时传感压力阈值作为所述压力函数的结果；其中，所述预设时刻与所述输液泵启动的时间差大于或等于预设时长。
  7. 根据权利要求1所述的方法，其特征在于，在所述根据所述当前传感压力及所述当前输液管压力计算当前阻塞压力之后，还包括：
    当所述当前阻塞压力大于或等于预设压力报警阈值时，发出阻塞报警信号。
  8. 一种阻塞压力检测装置，其特征在于，应用于输液系统，所述输液系 统包括相互连接的输液泵及输液管，所述输液管的外壁处安装有压力传感器，所述压力传感器用于检测传感压力，所述装置包括：
    压力检测模块，用于在检测到所述输液泵启动后，获取所述压力传感器在第一时刻检测到的第一传感压力，及在不同于所述第一时刻的第二时刻检测到的第二传感压力；
    函数系数计算模块，根据所述第一时刻的第一传感压力及所述第二时刻的第二传感压力计算所述输液管的压力函数的函数系数；其中，所述压力函数用于计算所述输液管在不同时刻的输液管压力；
    函数更新模块，用于实时获取所述压力传感器检测到的实时传感压力，根据所述实时传感压力对所述压力函数进行更新；
    阻塞压力计算模块，用于将检测到所述实时传感压力增大的时刻作为目标时刻，将所述目标时刻的所述压力函数作为所述输液管的目标压力函数；获取所述压力传感器在当前时刻检测到的当前传感压力，根据所述目标压力函数计算当前时刻的当前输液管压力，根据所述当前传感压力及所述当前输液管压力计算当前阻塞压力。
  9. 一种计算机可读存储介质，存储有计算机程序，所述计算机程序被处理器执行时，使得所述处理器执行如权利要求1至7中任一项所述方法的步骤。
  10. 一种阻塞压力检测设备，包括存储器和处理器，所述存储器存储有计算机程序，所述计算机程序被所述处理器执行时，使得所述处理器执行如权利要求1至7中任一项所述方法的步骤。
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116212229A (zh) * 2023-04-24 2023-06-06 深圳核心医疗科技股份有限公司 压力控制方法及装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5695473A (en) * 1994-07-27 1997-12-09 Sims Deltec, Inc. Occlusion detection system for an infusion pump
US20100214110A1 (en) * 2009-02-20 2010-08-26 Hospira, Inc. Occlusion detection system
CN104606737A (zh) * 2015-01-23 2015-05-13 深圳市科曼医疗设备有限公司 输液泵及输液泵阻塞检测方法
CN104815368A (zh) * 2015-05-14 2015-08-05 深圳市科曼医疗设备有限公司 输液器堵塞的识别方法和装置
CN111316371A (zh) * 2017-10-24 2020-06-19 康尔福盛303公司 用于输液泵的堵塞检测

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5695473A (en) * 1994-07-27 1997-12-09 Sims Deltec, Inc. Occlusion detection system for an infusion pump
US20100214110A1 (en) * 2009-02-20 2010-08-26 Hospira, Inc. Occlusion detection system
CN104606737A (zh) * 2015-01-23 2015-05-13 深圳市科曼医疗设备有限公司 输液泵及输液泵阻塞检测方法
CN104815368A (zh) * 2015-05-14 2015-08-05 深圳市科曼医疗设备有限公司 输液器堵塞的识别方法和装置
CN111316371A (zh) * 2017-10-24 2020-06-19 康尔福盛303公司 用于输液泵的堵塞检测

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116212229A (zh) * 2023-04-24 2023-06-06 深圳核心医疗科技股份有限公司 压力控制方法及装置

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