Infusion system and control method, electronic device and computer-readable storage medium

Abstract

The application provides an infusion system and a control method, an electronic device and a computer readable storage medium. The infusion system control method is applied to an infusion system. The infusion system comprises a liquid storage device, an infusion pump, an infusion tube and a first pressure sensor. The infusion tube comprises a first sub-tube, a connecting part and a second sub-tube which are sequentially communicated. One end of the first sub-tube away from the connecting part is communicated with the liquid storage device. One end of the second sub-tube away from the connecting part is communicated with a subject to be infused. The first pressure sensor is arranged in the second sub-tube. The infusion system control method comprises the following steps: obtaining the volume of the first sub-tube and the liquid flow rate in the infusion tube. According to the volume and the liquid flow rate, the detection period is determined. The liquid pressure change amount in the infusion tube in the detection period is obtained. When the liquid pressure change amount is greater than or equal to a preset value, the infusion pump is controlled to perform a preset action. The infusion system control method can avoid the gas from entering the second sub-tube, and the exhaust operation is not needed when the medicine liquid is supplemented, so that the work efficiency can be improved.

Description

Technical Field

[0001] This application relates to the field of medical device technology, and in particular to an infusion system and control method, electronic device and computer-readable storage medium. Background Technology

[0002] Intravenous infusion is widely used as a treatment method in clinical rehabilitation.

[0003] In related technologies, an infusion tubing includes a first conduit, a drip chamber, and a second conduit. The drip chamber is connected between the first and second conduits. The end of the first conduit furthest from the drip chamber is connected to an infusion bottle. The end of the second conduit furthest from the drip chamber is connected to the recipient of the infusion.

[0004] While related technologies can detect whether an IV bottle is empty and issue an alarm to remind medical staff to change the medication, a problem arises: after the IV fluid is completely drained, air can easily enter the second tubing, meaning the fluid level is already in the second tubing. This necessitates purging the air from the IV tubing before subsequent medication changes, making it difficult for medical staff to change or replenish the medication. Summary of the Invention

[0005] This application provides an infusion system and control method, electronic device and computer-readable storage medium to solve the problem of difficulty in replacing or replenishing medication caused by the liquid level entering the pipeline below the drip chamber during infusion.

[0006] On one hand, this application provides a control method for an infusion system. This infusion system control method is applied to an infusion system, which includes a reservoir, an infusion pump, an infusion tubing, and a first pressure sensor. The infusion tubing includes a first sub-tub, a second sub-tub, and a connecting portion connecting the first and second sub-tubs. The end of the first sub-tub away from the connecting portion is connected to the reservoir, and the end of the second sub-tub away from the connecting portion is connected to the infusion recipient. The first pressure sensor is disposed on the second sub-tub. The infusion system control method includes:

[0007] Obtain the volume of the first sub-tube and the fluid flow rate within the infusion tube;

[0008] The detection cycle is determined based on the volume and liquid flow rate;

[0009] Obtain the change in liquid pressure within the infusion tubing during the detection period;

[0010] Determine whether the change in liquid pressure is greater than or equal to a preset value. If so, control the infusion pump to perform the preset action.

[0011] In the aforementioned infusion system control method, the first pressure sensor measures the pressure at a preset position in the second sub-tube, thereby obtaining the change in liquid pressure within a detection cycle. The detection cycle is determined based on the volume of the first sub-tube and the fluid flow rate within the infusion tube, ensuring that an empty liquid bottle in the storage device is detected before the liquid level enters the second sub-tube. Therefore, this infusion system control method effectively prevents liquid from entering the second sub-tube, i.e., prevents gas from entering the second sub-tube. Consequently, during medication changes or replenishment, there is no need to perform venting operations, improving the efficiency of medication changes or replenishment. Furthermore, it prevents gas from entering the recipient's body, eliminating the need for dedicated personnel to monitor the infusion progress.

[0012] In some optional implementations of infusion system control methods, the change in liquid pressure within the infusion tubing during the detection period is obtained, including:

[0013] Obtain the overall pressure change;

[0014] Obtain the change in elasticity of the infusion tubing during the detection period;

[0015] The change in liquid pressure is determined based on the change in elastic force and the change in overall pressure.

[0016] In the above embodiments, the influence of the elasticity of the infusion tubing on the control of the infusion system can be eliminated, which helps to avoid the infusion system from erroneously executing preset actions due to excessive changes in the elasticity of the infusion tubing, thereby improving the stability and reliability of the infusion system operation.

[0017] In some alternative implementations of infusion system control methods, the overall pressure change is obtained, including:

[0018] Obtain the initial pressure value of the preset position of the second sub-tube at the beginning of the detection cycle;

[0019] Obtain the end pressure value of the second sub-tube at the preset position at the end of the detection cycle;

[0020] The overall pressure change is determined by the difference between the initial pressure value and the final pressure value, and the final pressure value is used as the initial pressure value for the next testing cycle.

[0021] In some optional implementations of the infusion system control method, obtaining the end pressure value of the second sub-tube at the end of the detection cycle at a preset position includes:

[0022] Obtain the actual pressure values ​​of the preset position of the second sub-tube at multiple moments within the pump index cycle of the infusion pump;

[0023] The final pressure value of the testing cycle is determined based on multiple actual pressure values; the final pressure value is the average of multiple pressure values.

[0024] The infusion system control method provided above is beneficial to improving the filtering capability of the infusion system during the infusion process, improving the accuracy of the comprehensive pressure change, and thus improving the stability and reliability of the infusion system.

[0025] In some alternative implementations of infusion system control methods, the infusion pump includes multiple pump fingers arranged in parallel along the extension of the second sub-tube. During the operation of the infusion pump, the multiple pump fingers alternately squeeze the second sub-tube one by one in sequence, and each pump finger has a preset pressure weighting value.

[0026] Obtain the end pressure value of the second sub-tube at the preset position at the end of the detection cycle, including:

[0027] Obtain the first actual pressure value at the preset position of the second sub-tube at the end time;

[0028] Obtain the preset pressure weighted value of the pump finger that squeezes the second sub-tube at the end moment;

[0029] The terminal pressure value is determined based on the first actual pressure value and the preset pressure weighted value.

[0030] In the control method of the infusion system provided above, by setting a weighted value for each pump finger of the infusion pump, it is beneficial to eliminate the influence of different pump fingers squeezing the infusion tube on the sensing value of the first pressure sensor, thereby improving the filtering capability of the infusion system during the infusion process, improving the accuracy of the comprehensive pressure change, and thus improving the stability and reliability of the infusion system.

[0031] In some alternative implementations of infusion system control methods, the infusion pump includes multiple pump fingers arranged side by side along the extension direction of the second sub-tube. During the operation of the infusion pump, the multiple pump fingers alternately squeeze the second sub-tube one by one.

[0032] Obtain the end pressure value of the second sub-tube at the preset position at the end of the detection cycle, including:

[0033] Determine the target pump specification for the infusion pump;

[0034] Obtain the second actual pressure value corresponding to the moment when the target pump finger squeezes the second sub-tube within the duration of one pump finger cycle before the end time;

[0035] The terminal pressure value is determined based on the second actual pressure value.

[0036] In the infusion system control method provided in the above embodiments, when the first pressure sensor measures the pressure value, it can be ensured that the same pump finger is squeezing the infusion tube. This can avoid the influence of different pump fingers squeezing the infusion tube on the sensing value of the first pressure sensor, thereby improving the filtering capability of the infusion system during the infusion process, improving the accuracy of the comprehensive pressure change, and thus improving the stability and reliability of the infusion system.

[0037] In some optional implementations of infusion system control methods, the infusion system control method further includes:

[0038] Obtain the single infusion volume of each pump finger in the infusion pump. The single infusion volume of the pump finger is the infusion volume of the second sub-tube when the pump finger squeezes the second sub-tube.

[0039] The preset pressure weighting value corresponding to the pump indicator is determined based on the single infusion volume of the pump indicator.

[0040] In some optional implementations of infusion system control methods, the change in elasticity of the infusion tubing during the detection period is obtained, including:

[0041] Obtain the stress relaxation curve corresponding to the preset position of the second sub-tube;

[0042] The initial elastic force value at the initial moment of the detection cycle is determined based on the stress relaxation curve.

[0043] The end elastic force value at the end of the detection cycle is determined based on the stress relaxation curve.

[0044] The change in elastic force is determined by the difference between the initial elastic force value and the final elastic force value, and the final elastic force value is used as the initial elastic force value for the next detection cycle.

[0045] In some optional implementations of the infusion system control method, the stress relaxation curve corresponding to the preset position of the second sub-tube is obtained, including:

[0046] When there is liquid in the liquid storage device, the pressure values ​​at a preset position of the second sub-tube at multiple different times are collected.

[0047] The stress relaxation curve corresponding to the preset position of the second sub-tube is fitted based on the pressure values ​​at multiple different times.

[0048] In some optional implementations of infusion system control methods, preset actions include alarms and / or stopping the infusion.

[0049] On the other hand, this application also provides an infusion system. The infusion system includes a storage device, an infusion pump, an infusion tubing, and a processor. The infusion tubing includes a first sub-tub, a second sub-tub, and a connecting portion connecting the first and second sub-tubs. The end of the first sub-tub away from the connecting portion is connected to the storage device, and the end of the second sub-tub away from the connecting portion is connected to the object receiving the infusion. The infusion pump includes a first pressure sensor disposed on the second sub-tub. The first pressure sensor is used to detect the pressure value at a preset position in the second sub-tub. The infusion pump is used to acquire the fluid flow rate within the infusion tubing. The processor is used to determine a detection cycle based on the volume of the first sub-tub and the fluid flow rate; determine the change in fluid pressure within the infusion tubing based on the pressure value detected by the first pressure sensor; and determine whether the change in fluid pressure is greater than or equal to a preset value. If so, the processor controls the infusion pump to execute a preset action.

[0050] The infusion system provided in the above embodiments can perform a preset action before the liquid level in the infusion system drops to the second sub-tube, thereby preventing gas from entering the second sub-tube. This eliminates the need to first purge gas from the second sub-tube during medication replacement or replenishment, thus reducing the workload for medical staff and improving the time available for medication replacement or replenishment. Furthermore, it prevents the introduction of gas into the patient's body, ensuring patient safety and eliminating the need for dedicated personnel to monitor the infusion progress.

[0051] In some possible implementations, the first pressure sensor is used to acquire the initial pressure value of the preset position of the second sub-tube at the beginning of the detection cycle, and to acquire the end pressure value of the preset position of the second sub-tube at the end of the detection cycle; the processor is used to determine the comprehensive pressure change based on the difference between the initial pressure value and the end pressure value, and to use the end pressure value as the initial pressure value for the next detection cycle; the processor is also used to acquire the elasticity change of the infusion tube during the detection cycle, and to determine the liquid pressure change based on the elasticity change and the comprehensive pressure change.

[0052] In some possible implementations, the processor is also used to obtain the stress relaxation curve corresponding to the preset position of the second sub-tube; determine the initial elastic force value at the beginning of the detection cycle based on the stress relaxation curve; determine the end elastic force value at the end of the detection cycle based on the stress relaxation curve; determine the elastic force change based on the difference between the initial elastic force value and the end elastic force value, and use the end elastic force value as the initial elastic force value for the next detection cycle.

[0053] In some possible implementations, the first pressure sensor is also used to acquire pressure values ​​at a preset position of the second sub-tube at multiple different times when there is liquid in the liquid storage device; the processor is also used to fit a stress relaxation curve corresponding to the preset position of the second sub-tube based on the pressure values ​​at multiple different times.

[0054] On the other hand, an electronic device is provided, including a processor and a memory communicatively connected to the processor; wherein the memory stores instructions executable by the processor, which are executed by the processor to enable the processor to perform the infusion system control method provided in some embodiments of this application.

[0055] On the other hand, a computer-readable storage medium is provided, storing a computer program that, when executed by a processor, implements the infusion system control method provided in some embodiments of this application. Attached Figure Description

[0056] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0057] Figure 1 This is a schematic diagram of the infusion system in some optional embodiments of this application. Figure 1 ;

[0058] Figure 2 This is a schematic diagram of the infusion system in some optional embodiments of this application. Figure 2 ;

[0059] Figure 3 This is an assembly diagram of the infusion pump and infusion tubing in some optional embodiments of this application;

[0060] Figure 4 Stress relaxation curves for the preset position of the second sub-tube in some optional embodiments of this application;

[0061] Figure 5 The flowchart shows a method for controlling an infusion system in some optional embodiments of this application.

[0062] Explanation of reference numerals in the attached figures:

[0063] 100-Liquid storage device; 200-Infusion pump; 210-Pump finger; 220-Driver; 300-Infusion tube; 310-First sub-tube; 320-Second sub-tube; 330-Connecting part; 400-First pressure sensor; 500-Second pressure sensor.

[0064] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0065] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the summary of the invention.

[0066] In related technologies, the detection of empty infusion bottles mainly involves a detection device clamped to the infusion tubing. An infrared sensor detects whether any liquid is dripping from the tubing. If no liquid is dripping, the bottle is considered empty. While this method prevents air from entering the recipient's body along the tubing, it also means that liquid has already entered the tubing when an empty bottle is detected. Therefore, after changing or adding medication, medical staff must first remove any excess air from the tubing to prevent air from being introduced into the recipient's body.

[0067] Therefore, the infusion system in the relevant technology has the problem that the liquid level enters the pipeline below the drip chamber, making it difficult to change or replenish the medication.

[0068] To address the aforementioned technical problems, this application provides, in some optional embodiments, a method for controlling an infusion system, an electronic device, and a computer-readable storage medium. The method is applied to an infusion system. The infusion system includes a reservoir for storing liquid, an infusion pump for powering the liquid, and an infusion tube for transporting the liquid. Further optionally, the infusion tube includes a connecting portion, a first sub-tube connecting the reservoir and the connecting portion, and a second sub-tube connecting the connecting portion and the object being infused with liquid. The infusion system control method determines the detection cycle based on the volume of the first sub-tube and the flow rate of the liquid in the infusion tube, ensuring that the liquid level is detected at least once for the change in liquid pressure after entering the first sub-tube and before entering the second sub-tube. Therefore, this application can perform a preset action before the liquid level enters the second sub-tube to prevent gas from entering the second sub-tube. Therefore, during the replacement or replenishment of the medication, there is no need to purge the gas from the second sub-tube.

[0069] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The following will be combined with... Figures 1 to 5 The embodiments of this application will be described below.

[0070] On one hand, this application provides a method for controlling an infusion system. This method can be applied to an infusion system. In some optional embodiments, such as... Figure 1 and Figure 2 As shown, the infusion system includes a storage device 100, an infusion pump 200, an infusion tubing 300, and a first pressure sensor 400. The infusion tubing 300 includes a first sub-tub 310, a second sub-tub 320, and a connecting portion 330 connecting the first sub-tub 310 and the second sub-tub 320. The end of the first sub-tub 310 away from the connecting portion 330 is connected to the storage device 100, and the end of the second sub-tub 320 away from the connecting portion 330 is connected to the object receiving the infusion. The first pressure sensor is disposed on the second sub-tub 320. During the infusion process, the infusion pump 200 is disposed on the second sub-tub 320 to provide power for the flow of liquid within the infusion tubing 300 by squeezing the second sub-tub 320. In some optional embodiments, the inner diameter of the connecting portion 330 is larger than the inner diameter of the first sub-tub 310. Optionally, a pressure-balancing channel is provided at the connection portion 330 to allow external gas to enter the connection portion 330, thereby balancing the pressure inside and outside the infusion system. In some optional embodiments, the connection portion 330 can be a drip chamber.

[0071] The infusion system control method provided in this application includes:

[0072] Step S01: Obtain the volume of the first sub-tube 310 and the liquid flow rate in the infusion tube 300.

[0073] For example, during the infusion process, the first sub-tube 310 is a defined component, therefore its volume is a fixed value. Thus, the volume of the first sub-tube 310 can be determined based on the product model. In some optional embodiments, to facilitate determining the volume of the first sub-tube 310, its volume can be pre-fabricated during the manufacturing process of the infusion tube 300. In some optional embodiments, the volume of the first sub-tube 310 can also be calculated based on its inner diameter and length.

[0074] In some optional embodiments, the fluid flow rate within the infusion tubing 300 can be obtained from the infusion pump 200. In some optional embodiments, the infusion pump 200 can be configured as an infusion pump with an adjustable infusion rate. During the infusion process, medical personnel can adjust the infusion pump 200 according to the needs of the recipient to regulate the infusion rate.

[0075] Step S03: Determine the detection cycle based on the volume and liquid flow rate.

[0076] In a further optional embodiment, after the first sub-tube 310 is filled with liquid, the volume of the liquid in the first sub-tube 310 is a first volume. Further optionally, during the infusion process, the time required to infuse the first volume of medication into the recipient's body is a first duration. The detection cycle is shorter than the first duration.

[0077] Step S05: Obtain the change in liquid pressure within the infusion tube 300 during the detection period.

[0078] In some optional embodiments, the pressure value at a preset position of the second sub-tube 320 can be detected by the first pressure sensor 400. Then, the change in liquid pressure within the infusion tube 300 during the detection period can be obtained based on the pressure values ​​detected by the first pressure sensor 400 at different times.

[0079] Step S07: Determine whether the change in liquid pressure is greater than or equal to the preset value. If so, control the infusion pump 200 to perform the preset action.

[0080] In some optional embodiments, the preset value can be set according to the inner diameter of the first sub-tube 310 and the cross-sectional size of the liquid-containing cavity of the dispensing device parallel to the horizontal plane when the liquid storage device 100 is full of liquid. In related technologies, the cross-sectional area parallel to the horizontal plane of the device for storing the liquid is much larger than the cross-sectional area of ​​the channel inside the first sub-tube 310. Therefore, when the infusion rate is constant and the liquid level is inside the liquid storage device 100, the liquid level decreases relatively slowly. After the liquid level enters the first sub-tube 310, the liquid level decreases relatively quickly due to the smaller diameter of the first sub-tube 310. Therefore, the rate of liquid level decrease can be used to determine whether the liquid level has entered the infusion tube 300.

[0081] Furthermore, the greater the height difference between the first pressure sensor 400 and the liquid level in the infusion system, the greater the pressure value detected by the first pressure sensor 400. Therefore, the change in the liquid level height in the infusion system during the detection period can be determined based on the change in liquid pressure. Thus, in the above embodiment, it can be determined whether the liquid level has entered the infusion tube 300 based on the change in liquid pressure.

[0082] Further optionally, the preset actions include alarming and / or stopping the infusion. For example, the preset action could be turning off the infusion pump 200. In further optional embodiments, the preset action may also include issuing an alarm. Optionally, an audible alarm signal may be emitted, such as a buzzer sounding an alarm. In other optional embodiments, an optical alarm signal may also be emitted. For example, an alarm light is illuminated, and the infusion progress of the infusion system can be determined by observing whether the alarm light goes out.

[0083] The infusion system control method provided in the above embodiment ensures that, during the infusion process, after the liquid level enters the first sub-tube 310 and before entering the second sub-tube 320, the infusion system completes at least one detection of the liquid pressure change. This allows the system to perform a preset action before the liquid level enters the second sub-tube 320 to prevent gas from entering the second sub-tube 320. Consequently, no venting operation is required when replenishing or changing the medication, thus improving the efficiency of changing or replenishing the medication during the infusion process.

[0084] In some further optional embodiments, the duration of the detection cycle is less than or equal to half of the first duration. This allows for at least two liquid pressure changes to be implemented while the liquid level is within the first sub-tube 310. Furthermore, the liquid level remains within the first sub-tube 310 throughout at least one detection cycle, thereby improving the stability of the infusion system.

[0085] In some optional embodiments, the first pressure sensor 400 is located at a first position of the second sub-tube 320. The infusion pump 200 is located at a second position. Optionally, the first position is located upstream of the second position, meaning that the liquid in the infusion system passes through the first position first and then the second position during the infusion process.

[0086] In some alternative embodiments, the first pressure sensor 400 may also be a sensor within the infusion pump 200. In some alternative embodiments, the first pressure sensor 400 is a pressure sensor on the side of the infusion pump 200 furthest from the object being infused.

[0087] In some optional embodiments, step S05, obtaining the change in liquid pressure within the infusion tubing 300 during the detection period, includes:

[0088] Step S051: Obtain the overall pressure change.

[0089] For example, the combined pressure at a preset position of the second sub-tube 320 can be obtained through the first pressure sensor 400. (Refer to...) Figure 2 When the first pressure sensor 400 measures the pressure value at a preset position in the second sub-tube 320, the pressure experienced by the first pressure sensor 400 is the sum of the pressure generated by the liquid inside the second sub-tube 320 and the pressure generated by the second sub-tube 320 itself. Therefore, the pressure value collected by the first pressure sensor 400 is the comprehensive pressure value at the preset position of the second sub-tube 320. Optionally, the comprehensive pressure change at the preset position of the second sub-tube 320 over a certain period can be obtained based on the pressure value at the preset position of the second sub-tube 320 at different times.

[0090] Step S053: Obtain the change in elasticity of the infusion tube 300 during the detection period.

[0091] When the infusion tubing 300 is subjected to force, it deforms. As the deformation time of the infusion tubing 300 increases, stress relaxation occurs, and the elasticity of the infusion tubing 300 changes during the testing period. In some optional embodiments, the amount of elasticity change of the infusion tubing 300 during the testing period can be determined based on the material properties of the second sub-tubing 320.

[0092] Step S055: Determine the change in liquid pressure based on the change in elastic force and the change in overall pressure.

[0093] For example, the change in liquid pressure can be obtained by subtracting the change in elasticity from the change in total pressure.

[0094] The infusion system control method provided in the above embodiments can eliminate the influence of the elasticity change of the infusion tube 300 on the detection of liquid pressure change, which is beneficial to improving the filtering capability of the infusion system control method and improving the accuracy of liquid pressure change detection. Therefore, the infusion system control method provided in the above embodiments is beneficial to improving the reliability of infusion system control.

[0095] In some optional embodiments, step S051: obtaining the comprehensive pressure change includes:

[0096] Step S0511: Obtain the initial pressure value of the preset position of the second sub-tube 320 at the beginning of the detection cycle.

[0097] Step S0513: Obtain the end pressure value of the preset position of the second sub-tube 320 at the end of the detection cycle;

[0098] Step S0515: Determine the overall pressure change based on the difference between the initial pressure value and the final pressure value, and use the final pressure value as the initial pressure value for the next detection cycle.

[0099] It should be noted that during the infusion process, as the amount of fluid in the infusion system decreases, the overall pressure value detected by the first pressure sensor 400 decreases. Therefore, in some optional embodiments, the overall pressure change during the detection period can be obtained by subtracting the final pressure value from the initial pressure value.

[0100] In some optional embodiments, S0513: Obtaining the end pressure value of the preset position of the second sub-tube 320 at the end of the detection cycle includes:

[0101] S05131: Obtain the actual pressure values ​​of the preset position of the second sub-tube 320 at multiple moments within the pump index cycle of the infusion pump 200.

[0102] In some optional embodiments, the infusion pump 200 is a peristaltic pump. The infusion pump 200 includes multiple pump fingers 210, which sequentially squeeze the infusion tubing 300 to power the liquid within the tubing. The pump finger cycle of the infusion pump 200 is the time interval required for all pump fingers 210 to complete squeezing the infusion tubing 300. In some optional embodiments, the time interval between two pressure detection times of the first pressure sensor 400 is a first duration. The pump finger cycle of the infusion pump 200 is an integer multiple of the first duration. This helps ensure that the first pressure sensor 400 collects data an equal number of times within each pump finger cycle of the infusion pump 200. In some optional embodiments, the duration corresponding to each detection cycle is an integer multiple of the pump finger cycle, which helps improve the accuracy of obtaining the end-point pressure value.

[0103] S05133: Determine the end pressure value of the detection cycle based on multiple actual pressure values; the end pressure value is the average of multiple pressure values.

[0104] In the infusion system control method provided in the above embodiments, the average value of multiple collected pressure values ​​is used as the end pressure value of the detection cycle, which is beneficial to improving the filtering capability of the infusion system control method and thus improving the reliability of the infusion system control method.

[0105] In some optional embodiments, the infusion pump 200 includes a plurality of pump fingers 210 arranged side-by-side along the extension of the second sub-tube 320. During operation of the infusion pump 200, the plurality of pump fingers 210 alternately squeeze the second sub-tube 320 one by one, and each pump finger 210 has a preset pressure weighting value. In some optional embodiments, refer to... Figure 3 The infusion pump 200 also includes a drive unit 220. In some alternative embodiments, the plurality of pump fingers 210 can be a plurality of cams disposed on a drive shaft. The drive unit 220 is connected to the drive shaft to drive the drive shaft to rotate, thereby driving the plurality of cams to rotate, so that the cams can alternately squeeze the second sub-tube 320 in sequence.

[0106] S0513: Obtain the end pressure value of the preset position of the second sub-tube 320 at the end of the detection cycle, including:

[0107] S05132: Obtain the first actual pressure value at the end of the preset position of the second sub-tube 320;

[0108] S05134: Obtain the preset pressure weighted value of the pump finger 210 that squeezes the second sub-tube 320 at the end moment;

[0109] S05136: Determine the terminal pressure value based on the first actual pressure value and the preset pressure weighted value.

[0110] It should be noted that during the process of different pump fingers 210 in the infusion pump 200 squeezing the second sub-tube 320, the pressure values ​​sensed by the corresponding first pressure sensor 400 are also different.

[0111] The above embodiments can set the weighted value corresponding to each pump finger 210 according to the influence of each pump finger 210 of the infusion pump 200 on the pressure value at the first pressure sensor 400, so as to improve the filtering capability of the infusion system control method, thereby improving the stability and reliability of the infusion system control method.

[0112] In some alternative embodiments, the infusion pump 200 includes a plurality of pump fingers 210 arranged side by side along the extension direction of the second sub-tube 320. During the operation of the infusion pump 200, the plurality of pump fingers 210 alternately squeeze the second sub-tube 320 one by one.

[0113] Step S0513: Obtain the end pressure value of the preset position of the second sub-tube 320 at the end of the detection cycle, including:

[0114] Step S05135: Determine the target pump number 210 for infusion pump 200;

[0115] Step S05137: Obtain the second actual pressure value corresponding to the moment when the target pump finger 210 squeezes the second sub-tube 320 within the duration of one pump finger cycle before the end time;

[0116] Step S05139: Determine the end pressure value based on the second actual pressure value.

[0117] In the above embodiments, it can be ensured that the pressure value collected by the first pressure sensor 400 is always at the same moment when the second sub-tube 320 is squeezed by the same pump finger 210, thereby eliminating the difference in the influence of different pump fingers 210 squeezing the second sub-tube 320 on the pressure collection of the first pressure sensor 400. Therefore, the above embodiments are beneficial to improving the filtering capability of the infusion system control method, and thus beneficial to improving the accuracy and reliability of the infusion system control method.

[0118] In some optional embodiments, the infusion system control method further includes:

[0119] Step S09: Obtain the single infusion volume of each pump finger 210 in the infusion pump 200. The single infusion volume of the pump finger 210 is the infusion volume of the second sub-tube 320 when the pump finger 210 squeezes the second sub-tube 320.

[0120] Step S11: Determine the preset pressure weighting value corresponding to pump finger 210 based on the single infusion volume of pump finger 210.

[0121] In some optional embodiments, the larger the single infusion volume of pump finger 210, the larger the corresponding preset pressure weighting value.

[0122] In the above embodiments, a correspondence can be established by obtaining the number of the pump finger 210 that squeezes the second sub-tube 320 when the first pressure sensor 400 detects pressure, and binding the preset pressure weighted value corresponding to the pump finger 210 with the detection value of the first pressure sensor 400 at that moment.

[0123] In some optional embodiments, step S053: obtaining the change in elasticity of the infusion tubing 300 during the detection period includes:

[0124] Step S0531: Obtain the stress relaxation curve corresponding to the preset position of the second sub-tube 320;

[0125] Step S0533: Determine the initial elastic force value at the initial moment of the detection cycle based on the stress relaxation curve;

[0126] Step S0535: Determine the end elastic force value at the end of the detection cycle based on the stress relaxation curve;

[0127] Step S0537: Determine the change in elasticity based on the difference between the initial elasticity value and the final elasticity value, and use the final elasticity value as the initial elasticity value for the next detection cycle.

[0128] Reference Figure 4 Specifically, given a fixed material and model for the infusion tubing 300, the stress relaxation curve corresponding to the infusion tubing 300 is a constant curve. Therefore, the elastic force value generated by the infusion tubing 300 at each moment can be predicted based on the stress relaxation curve. Thus, the change in elastic force at a preset position within the infusion tubing 300 can be determined based on the magnitude of the elastic force generated by the infusion tubing 300 at two different moments.

[0129] In some optional embodiments, step S0531: obtaining the stress relaxation curve corresponding to the preset position of the second sub-tube 320 includes:

[0130] Step S05311: When there is liquid in the liquid storage device 100, collect the pressure values ​​at multiple different times at the preset position of the second sub-tube 320.

[0131] Step S05313: Fit the stress relaxation curve corresponding to the preset position of the second sub-tube 320 based on the pressure values ​​at multiple different times.

[0132] In some optional embodiments, when there is a large amount of liquid in the storage device 100, the change in the liquid level in the infusion system is small, and it can be assumed that the liquid level in the infusion system will not change for a period of time. Therefore, when there is a large amount of liquid in the storage device 100, the pressure value at the preset position of the second sub-tube 320 can be collected multiple times. When the time interval between two adjacent measurements is small, the difference between the values ​​sensed by the first pressure sensor 400 can be considered as the change in the elasticity at the preset position of the infusion tube 300. Thus, multiple measurements can be used to fit the stress relaxation curve corresponding to the preset position of the second sub-tube 320.

[0133] On the other hand, this application also provides an infusion system. The infusion system includes a storage device 100, an infusion pump 200, an infusion tubing 300, and a processor. The infusion tubing 300 includes a first sub-tub 310, a second sub-tub 320, and a connecting portion 330 connecting the first sub-tub 310 and the second sub-tub 320. The end of the first sub-tub 310 away from the connecting portion 330 is connected to the storage device 100, and the end of the second sub-tub 320 away from the connecting portion 330 is connected to the object receiving the infusion. The infusion pump 200 includes a first pressure sensor 400, which is disposed on the second sub-tub 320. The first pressure sensor 400 is used to detect the pressure value at a preset position in the second sub-tub 320. The infusion pump 200 is used to obtain the fluid flow rate within the infusion tubing 300. The processor is used to determine the detection cycle based on the volume and liquid flow rate of the first sub-tube 310; to determine the liquid pressure change in the infusion tube 300 based on the pressure value detected by the first pressure sensor 400; and to determine whether the liquid pressure change is greater than or equal to a preset value. If so, the processor controls the infusion pump 200 to perform a preset action.

[0134] In some further optional embodiments, the infusion system also includes a second pressure sensor 500. Further optionally, the infusion pump 200 is disposed between the first pressure sensor 400 and the second pressure sensor 500, thereby allowing confirmation of whether the infusion tubing 300 is blocked by the sensing values ​​of the first pressure sensor 400 and the second pressure sensor 500.

[0135] In some further optional embodiments, the processor is also configured to determine the overall pressure change based on the pressure value detected by the first pressure sensor 400; to acquire the elasticity change of the infusion tube 300 during the detection period; and to determine the liquid pressure change based on the elasticity change and the overall pressure change.

[0136] In some further optional embodiments, the first pressure sensor 400 is used to acquire the initial pressure value of the preset position of the second sub-tube 320 at the beginning of the detection cycle, and to acquire the end pressure value of the preset position of the second sub-tube 320 at the end of the detection cycle; the processor is also used to determine the comprehensive pressure change based on the difference between the initial pressure value and the end pressure value, and to use the end pressure value as the initial pressure value of the next detection cycle.

[0137] In some further optional embodiments, the first pressure sensor 400 is also used to acquire the actual pressure values ​​of the preset position of the second sub-tube 320 at multiple moments within the pump index cycle of the infusion pump 200; the processor is also used to determine the end pressure value of the detection cycle based on the multiple actual pressure values; the end pressure value is the average of the multiple pressure values.

[0138] In some further optional embodiments, the infusion pump 200 includes a plurality of pump fingers 210 arranged side-by-side along the extension direction of the second sub-tube 320, and the plurality of pump fingers 210 are configured to alternately squeeze the second sub-tube 320. The first pressure sensor 400 is also used to acquire a first actual pressure value at a preset position of the second sub-tube 320 at the end time. The infusion pump 200 is used to acquire a preset pressure weighted value of the pump fingers 210 squeezing the second sub-tube 320 at the end time, and the processor is also used to determine the end pressure value based on the first actual pressure value and the preset pressure weighted value.

[0139] In some alternative embodiments, refer to Figure 3 The infusion pump 200 also includes a drive unit 220. In some alternative embodiments, the plurality of pump fingers 210 can be a plurality of cams disposed on a drive shaft. The drive unit 220 is connected to the drive shaft to drive the drive shaft to rotate, thereby driving the plurality of cams to rotate, so that the cams can alternately squeeze the second sub-tube 320 in sequence.

[0140] In some optional embodiments, the processor is further configured to acquire a stress relaxation curve corresponding to a preset position of the second sub-tube 320. An initial elastic force value is determined at the beginning of the detection cycle based on the stress relaxation curve. An end elastic force value is determined at the end of the detection cycle based on the stress relaxation curve. The change in elastic force is determined based on the difference between the initial elastic force value and the end elastic force value, and the end elastic force value is used as the initial elastic force value for the next detection cycle.

[0141] In some optional embodiments, the first pressure sensor 400 is further configured to acquire pressure values ​​at a preset position of the second sub-tube 320 at multiple different times when there is liquid in the liquid storage device 100; the processor is further configured to fit a stress relaxation curve corresponding to the preset position of the second sub-tube 320 based on the pressure values ​​at multiple different times.

[0142] On the other hand, this application also provides an electronic device. The electronic device includes a processor and a memory communicatively connected to the processor; wherein the memory stores instructions executable by the processor, which are executed by the processor to enable the processor to perform the infusion system control method disclosed in this application.

[0143] On the other hand, this application also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, implements the infusion system control method provided in the above embodiments.

[0144] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0145] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A control method for an infusion system, characterized in that, The infusion system includes a storage device, an infusion pump, an infusion tubing, and a first pressure sensor. The infusion tubing includes a first sub-tub, a second sub-tub, and a connecting portion connecting the first sub-tub and the second sub-tub. The end of the first sub-tub away from the connecting portion is connected to the storage device. The end of the second sub-tub away from the connecting portion is used to connect to the infusion object. The first pressure sensor is disposed on the second sub-tub. The infusion system control method includes: Obtain the volume of the first sub-tube and the liquid flow rate in the infusion tube; The detection cycle is determined based on the volume and the liquid flow rate; the detection cycle is configured such that at least one detection of the change in liquid pressure within the infusion tube is performed before the liquid level enters the second sub-tube from the first sub-tube. The change in liquid pressure within the infusion tube during the detection period is obtained; Determine whether the change in liquid pressure in the infusion tube is greater than or equal to a preset value. If so, control the infusion pump to perform a preset action.

2. The infusion system control method according to claim 1, characterized in that, Obtaining the change in liquid pressure within the infusion tubing during the detection period includes: Obtain the overall pressure change; The change in elasticity of the infusion tubing during the detection period is obtained; The change in liquid pressure within the infusion tube is determined based on the change in elasticity and the change in overall pressure.

3. The infusion system control method according to claim 2, characterized in that, Obtaining the comprehensive pressure change includes: Obtain the initial pressure value of the preset position of the second sub-tube at the beginning of the detection cycle; Obtain the end pressure value at the preset position of the second sub-tube at the end of the detection cycle; The overall pressure change is determined based on the difference between the initial pressure value and the final pressure value, and the final pressure value is used as the initial pressure value for the next detection cycle.

4. The infusion system control method according to claim 3, characterized in that, Obtaining the end pressure value at the preset position of the second sub-tube at the end of the detection cycle includes: Obtain the actual pressure value of the preset position of the second sub-tube at multiple moments within the pumping cycle of the infusion pump; The end pressure value of the detection cycle is determined based on multiple actual pressure values; the end pressure value is the average of multiple pressure values.

5. The infusion system control method according to claim 3, characterized in that, The infusion pump includes multiple pump fingers, which are arranged side by side along the extension of the second sub-tube. During the operation of the infusion pump, the multiple pump fingers alternately squeeze the second sub-tube one by one in sequence, and each pump finger has a preset pressure weighting value. Obtaining the end pressure value at the preset position of the second sub-tube at the end of the detection cycle includes: Obtain the first actual pressure value at the end of the preset position of the second sub-tube at the specified time; Obtain the preset pressure weighted value of the pump finger that squeezes the second sub-tube at the end moment; The end pressure value is determined based on the first actual pressure value and the preset pressure weighted value.

6. The infusion system control method according to claim 3, characterized in that, The infusion pump includes multiple pump fingers, which are arranged side by side along the extension direction of the second sub-tube. During the operation of the infusion pump, the multiple pump fingers alternately squeeze the second sub-tube one by one. Obtaining the end pressure value at the preset position of the second sub-tube at the end of the detection cycle includes: Determine the target pump indicator for the infusion pump; Obtain the second actual pressure value corresponding to the moment when the target pump finger squeezes the second sub-tube within the duration of one pump finger cycle before the end time; The end pressure value is determined based on the second actual pressure value.

7. The infusion system control method according to claim 5, characterized in that: Also includes: The single infusion volume of each pump finger in the infusion pump is obtained, wherein the single infusion volume of the pump finger is the infusion volume of the second sub-tube when the pump finger squeezes the second sub-tube; The preset pressure weighting value corresponding to the pump finger is determined based on the single infusion volume of the pump finger.

8. The infusion system control method according to claim 2, characterized in that, Obtaining the change in elasticity of the infusion tubing during the detection period includes: Obtain the stress relaxation curve corresponding to the preset position of the second sub-tube; The initial elastic force value at the initial moment of the detection cycle is determined based on the stress relaxation curve. The end elastic force value at the end of the detection cycle is determined based on the stress relaxation curve. The change in elastic force is determined based on the difference between the initial elastic force value and the final elastic force value, and the final elastic force value is used as the initial elastic force value for the next detection cycle.

9. The infusion system control method according to claim 8, characterized in that, Obtain the stress relaxation curve corresponding to the preset position of the second sub-tube, including: When the liquid storage device contains liquid, the pressure values ​​at a preset position of the second sub-tube at multiple different times are collected; The stress relaxation curve corresponding to the preset position of the second sub-tube is fitted based on the pressure values ​​at multiple different times.

10. The infusion system control method according to claim 1, characterized in that, The preset actions include alarming and / or stopping the infusion.

11. An infusion system, characterized in that, The device includes a liquid storage device, an infusion pump, an infusion tubing, and a processor. The infusion tubing includes a first sub-tub, a second sub-tub, and a connecting portion connecting the first sub-tub and the second sub-tub. The end of the first sub-tub away from the connecting portion is connected to the liquid storage device. The end of the second sub-tub away from the connecting portion is used to connect to the object to which the infusion is being administered. The infusion pump includes a first pressure sensor, which is disposed on the second sub-tub. The first pressure sensor is used to detect the pressure value at a preset position of the second sub-tube; The infusion pump is used to obtain the liquid flow rate in the infusion tube; The processor is configured to determine a detection cycle based on the volume of the first sub-tube and the liquid flow rate; the detection cycle is configured such that at least one detection of the liquid pressure change in the infusion tube is performed before the liquid level enters the second sub-tube from the first sub-tube; the liquid pressure change in the infusion tube is determined based on the pressure value detected by the first pressure sensor; and it is determined whether the liquid pressure change in the infusion tube is greater than or equal to a preset value. If so, the processor controls the infusion pump to perform a preset action.

12. The infusion system according to claim 11, characterized in that, The first pressure sensor is used to obtain the initial pressure value of the preset position of the second sub-tube at the beginning of the detection cycle, and to obtain the end pressure value of the preset position of the second sub-tube at the end of the detection cycle. The processor is used to determine the comprehensive pressure change based on the difference between the initial pressure value and the terminal pressure value, and to use the terminal pressure value as the initial pressure value for the next detection cycle; the processor is also used to obtain the elasticity change of the infusion tube during the detection cycle, and to determine the liquid pressure change in the infusion tube based on the elasticity change and the comprehensive pressure change.

13. The infusion system according to claim 12, characterized in that, The infusion pump includes multiple pump fingers, which are arranged side by side along the extension direction of the second sub-tube, and the multiple pump fingers are configured to alternately squeeze one of them onto the second sub-tube. The first pressure sensor is also used to obtain the first actual pressure value at the end of the second sub-tube at the preset position; The infusion pump is used to obtain a preset pressure weighted value of the pump finger that squeezes the second sub-tube at the end moment; The processor is also configured to determine the end pressure value based on the first actual pressure value and the preset pressure weighted value.

14. The infusion system according to claim 12, characterized in that, The processor is further configured to acquire the stress relaxation curve corresponding to the preset position of the second sub-tube; determine the initial elastic force value at the beginning of the detection cycle based on the stress relaxation curve; and determine the end elastic force value at the end of the detection cycle based on the stress relaxation curve. The change in elastic force is determined based on the difference between the initial elastic force value and the final elastic force value, and the final elastic force value is used as the initial elastic force value for the next detection cycle.

15. An electronic device, characterized in that, The system includes a processor and a memory communicatively connected to the processor; wherein the memory stores instructions executable by the processor, the instructions being executed by the processor to enable the processor to perform the infusion system control method as described in any one of claims 1 to 10.

16. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the infusion system control method according to any one of claims 1 to 10.

17. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the infusion system control method according to any one of claims 1 to 10.

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