Liquid level control method for blood purification equipment, blood purification equipment and computer-readable storage medium

Abstract

The present invention provides a liquid level control method for a blood purification device, a blood purification device, and a computer-readable storage medium. The liquid level control method includes: triggering a liquid level increase button to increase the liquid level of the liquid in the intravenous pot, obtaining a first trigger time T1 when the liquid level increase button is continuously triggered, and the first trigger time T1 is proportional to the liquid level increase amplitude H1 of the liquid in the intravenous pot; or triggering a liquid level decrease button to decrease the liquid level of the liquid in the intravenous pot, obtaining a second trigger time T2 when the liquid level decrease button is continuously triggered, and the second trigger time T2 is proportional to the liquid level decrease amplitude H2 of the liquid in the intravenous pot. The liquid level control method for the blood purification device of the present invention is convenient and efficient for liquid level adjustment operation of the liquid in the intravenous pot, has high liquid level adjustment accuracy, and can adaptively adjust the liquid level of the liquid in the intravenous pot, thereby improving the safety of liquid level control and adjustment, making blood purification treatment safer.

Description

Technical Field

[0001] The present invention relates to the field of control technology of blood purification equipment, and in particular to a liquid level control method for blood purification equipment, a blood purification equipment for implementing the liquid level control method, and a computer-readable storage medium. Background Art

[0002] Blood purification therapy refers to the process of removing blood from the patient's body and transferring it to an extracorporeal circulation circuit, and then outputting the patient's blood to a blood purifier. The blood purifier is used to purify the patient's blood to remove specific substances in the patient's blood, and then the purified blood is returned to the patient's body to complete the blood purification process, so as to achieve the purpose of purifying the blood and treating the disease. Blood purification therapy is divided into a variety of treatment modes, such as hemoperfusion, hemofiltration, hemodialysis, plasma exchange, hemofiltration and other treatment modes. Each blood purification treatment mode has specific clinical treatment symptoms. After long-term clinical practice, blood purification therapy has been widely used in blood purification centers, nephrology departments, hepatology departments, ICUs and other departments.

[0003] When a patient needs blood purification treatment, the user needs to use blood purification equipment to implement the blood purification treatment process. The operational safety of the blood purification equipment has an extremely important impact on the safety of the patient's blood purification treatment. Figure 1 and Figure 2 The blood purification device includes a host 1, a display screen 2 and an extracorporeal circulation circuit. The display screen 2 is a human-machine interactive touch screen, so that interactive communication can be achieved between the display screen 2 and the host 1. Medical staff can input instructions on the display screen 2 so that the blood purification device controls the extracorporeal circulation circuit to perform blood purification operation steps according to the medical staff's operation requirements to ensure the safety of the patient's blood purification treatment. The extracorporeal circulation circuit of the blood purification device includes an arterial line 310, a venous line 311, a blood purifier 34 and a venous pot 36. The first end of the arterial line 310 is used to connect to the human artery, the second end of the arterial line 310 is used to connect to the blood input end of the blood purifier 34, the first end of the venous line 311 is used to connect to the human vein, the second end of the venous line 311 is used to connect to the blood output end of the blood purifier 34, and the venous pot 36 is connected in series with the venous line 311. The display screen 2 of the blood purification device is used to display a liquid level increase button and a liquid level decrease button, so that medical staff can input a liquid level increase or liquid level decrease instruction on the display screen 2 to control and adjust the liquid level of the venous pot 36.

[0004] The arterial line 310 outputs the patient's blood to the blood input end of the blood purifier 34. After the patient's blood is purified by the blood purifier 34, the venous line 311 returns the purified blood to the patient's body to complete the blood purification treatment process. The venous pot 36 is one of the essential components of the blood purification equipment. When the venous pot 36 receives the patient's blood, the venous pot 36 can buffer the blood flow rate in the venous line 311 and remove bubbles in the blood in the venous line 311 to ensure the safety of the blood flow in the venous line 311. The liquid level in the venous pot 36 is one of the important indicators reflecting the blood flow status in the venous line 311. The liquid level in the venous pot 36 needs to be maintained within a reasonable range to ensure the safety of the patient's blood purification treatment. The user also needs to adjust the liquid level in the venous pot 36 in real time to change the blood purification status of the blood purifier 34.

[0005] In the prior art, when controlling and adjusting the liquid level of the liquid in the intravenous pot 36, the user triggers the liquid level increase button or the liquid level decrease button on the display screen 2 of the blood purification device to control and adjust the liquid level of the intravenous pot 36. The user must constantly monitor the liquid level changes of the liquid in the intravenous pot 36. When the liquid level in the intravenous pot 36 reaches the user's expected range, the user needs to trigger the liquid level increase button or the liquid level decrease button on the display screen 2 of the blood purification device again to turn off the liquid level adjustment of the intravenous pot 36. However, in the prior art, when controlling and adjusting the liquid level of the liquid in the intravenous pot 36, the user must constantly monitor the liquid level changes of the liquid in the intravenous pot 36 to turn the liquid level adjustment on or off. The user cannot accurately control the liquid level change amplitude of the liquid in the intravenous pot 36, resulting in the liquid level of the intravenous pot 36 being prone to malfunction during the adjustment process. Summary of the Invention

[0006] The first purpose of the present invention is to provide a liquid level control method for a blood purification device that can adaptively adjust the liquid level in an intravenous bottle, has high adjustment accuracy, and is convenient and efficient to adjust, thereby improving the safety of liquid level control and adjustment of the liquid in the intravenous bottle, making blood purification treatment safer and more reliable.

[0007] The second object of the present invention is to provide a blood purification device that implements the above-mentioned liquid level control method.

[0008] A third object of the present invention is to provide a computer-readable storage medium for implementing the above-mentioned liquid level control method.

[0009] In order to achieve the first purpose of the present invention, the present invention provides a liquid level control method for a blood purification device, comprising: triggering an activated liquid level increase button, controlling the blood purification device to perform an increase adjustment operation on the liquid level of the liquid in the venous pot of the blood purification device, and controlling the display screen of the blood purification device to display the real-time liquid level of the liquid in the venous pot, and obtaining a first trigger time T1 when the liquid level increase button is continuously triggered, wherein the first trigger time T1 is proportional to the liquid level increase amplitude H1 of the liquid in the venous pot; or triggering an activated liquid level decrease button, controlling the blood purification device to perform a decrease adjustment operation on the liquid level of the liquid in the venous pot of the blood purification device, and controlling the display screen of the blood purification device to display the real-time liquid level of the liquid in the venous pot, and obtaining a second trigger time T2 when the liquid level decrease button is continuously triggered, wherein the second trigger time T2 is proportional to the liquid level decrease amplitude H2 of the liquid in the venous pot.

[0010] It can be seen from the above scheme that the liquid level control method of the blood purification equipment of the present invention controls the liquid level increase or decrease amplitude of the liquid in the intravenous pot according to the continuous triggering time of the liquid level increase button or the liquid level decrease button in the activated state triggered by the user. The adjustment operation is convenient and efficient, and the adjustment accuracy of the liquid level of the liquid in the intravenous pot is improved. It can also adaptively adjust the liquid level of the liquid in the intravenous pot, thereby improving the safety of the liquid level control and adjustment of the liquid in the intravenous pot, making blood purification treatment safer and more reliable.

[0011] A further solution is that before triggering the liquid level increase button in the activated state, the liquid level control method of the blood purification equipment further includes: detecting the capacity of the intravenous pot to obtain the intravenous pot capacity V1, detecting the volume of the liquid in the intravenous pot to obtain the liquid volume V2, detecting the liquid flow of the arterial line of the blood purification equipment to obtain the arterial line flow Q; calculating and obtaining the preset safety time When it is detected that the first trigger time T1 is greater than the preset safety time ΔT, the liquid level increase button is set to a disabled state.

[0012] A further solution is that after triggering the liquid level increase button in the activated state, the liquid level control method of the blood purification equipment further includes: judging whether the temperature of the liquid in the intravenous pot is rising; if so, controlling the display screen to display the detected temperature of the liquid in the intravenous pot; if not, controlling the blood purification equipment to issue an alarm signal; or, after triggering the liquid level decrease button in the activated state, the liquid level control method of the blood purification equipment further includes: judging whether the temperature of the liquid in the intravenous pot is falling; if so, controlling the display screen to display the detected temperature of the liquid in the intravenous pot; if not, controlling the blood purification equipment to issue an alarm signal; or, after triggering the liquid level decrease button in the activated state, the liquid level control method of the blood purification equipment further includes: detecting the liquid output rate of the output end of the intravenous pot; when it is judged that the liquid output rate is greater than the preset safety rate, controlling the blood purification equipment to issue a liquid output failure alarm signal of the intravenous pot.

[0013] A further solution is that after triggering the liquid level increase button in the activated state, the liquid level control method of the blood purification equipment also includes: displaying the triggered liquid level increase button in a graphic enlarged form on the display screen, and setting the liquid level decrease button to a disabled state; or, after triggering the liquid level decrease button in the activated state, the liquid level control method of the blood purification equipment also includes: displaying the triggered liquid level decrease button in a graphic enlarged form on the display screen, and setting the liquid level increase button to a disabled state.

[0014] A further solution is that the liquid level control method of the blood purification equipment further includes: judging whether the real-time liquid level of the liquid in the intravenous pot is within the preset liquid level range; if so, controlling the liquid level increase button and the liquid level decrease button displayed on the display screen to be set to an activated state; if not, controlling the liquid level increase button and the liquid level decrease button displayed on the display screen to be set to a disabled state, and controlling the blood purification equipment to send an alarm signal; when judging that the real-time liquid level of the liquid in the intravenous pot is within the preset liquid level range, the liquid level control method of the blood purification equipment further includes: detecting the temperature of the liquid in the intravenous pot to obtain a detected temperature; judging whether the detected temperature is within the preset temperature range; if so, controlling the liquid level increase button and the liquid level decrease button displayed on the display screen to be set to Activated state; if not, the liquid level increase button and the liquid level decrease button displayed on the control display are set to the disabled state, and the blood purification equipment is controlled to send an alarm signal; when it is determined that the real-time liquid level of the liquid in the venous pot exceeds the preset liquid level range, the liquid level control method of the blood purification equipment further includes: detecting the pressure of the gas in the venous pot to obtain a pressure detection value; determining whether the pressure detection value is greater than a preset pressure safety value; if so, controlling the blood purification equipment to send a venous pot overpressure fault signal, if not, detecting the bubble amount of the liquid in the venous line of the blood purification equipment to obtain the venous line bubble amount; when it is determined that the venous line bubble amount is greater than the preset bubble amount, controlling the blood purification equipment to send a venous line bubble fault signal.

[0015] A further solution is that after triggering the liquid level increase button in the activated state, the liquid level control method of the blood purification equipment also includes: detecting the liquid level rising rate of the liquid in the intravenous bottle; when it is determined that the liquid level rising rate is greater than the preset maximum rate value, the blood purification equipment is controlled to issue an alarm signal; wherein the preset maximum rate value is inversely proportional to the detected temperature.

[0016] A further solution is that the liquid level control method of the blood purification device further includes: detecting the diameter of the arterial pipeline of the blood purification device to obtain the diameter of the arterial pipeline According to the diameter of the arterial tube Calibrate the preset maximum rate value to obtain the calibrated preset maximum rate value; When the maximum value of the preset rate is reduced, the calibration operation is performed to obtain the maximum value of the preset rate after calibration; when it is determined that When the preset maximum rate value is maintained, the calibration operation is performed to obtain the preset maximum rate value after calibration; when it is determined that When the preset maximum rate value is increased, a calibration operation is performed to obtain the preset maximum rate value after calibration.

[0017] A further solution is that when it is determined that the real-time liquid level of the liquid in the intravenous pot is within a preset liquid level range, the liquid level control method of the blood purification equipment also includes: detecting the weight of the intravenous pot and controlling the display screen to display a first change curve of the weight of the intravenous pot changing with time; and / or controlling the display screen to display a second change curve of the real-time liquid level of the liquid in the intravenous pot changing with time.

[0018] In order to achieve the second purpose of the present invention, the present invention provides a blood purification device, including a host and a display screen. The host is provided with a circuit board that can interact with the display screen. The circuit board is provided with a processor and a memory. The memory stores a computer program. When the computer program is executed by the processor, the various steps of the liquid level control method of the above-mentioned blood purification device are implemented.

[0019] In order to achieve the third object of the present invention, the present invention provides a computer-readable storage medium having a computer program stored thereon, which implements the various steps of the liquid level control method of the above-mentioned blood purification equipment when the computer program is executed by a processor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of an embodiment of the blood purification device of the present invention.

[0021] Figure 2 It is a working principle diagram of an embodiment of the blood purification device of the present invention.

[0022] Figure 3 This is a diagram showing the working principle of the liquid level control of the venous kettle in the embodiment of the blood purification equipment of the present invention.

[0023] Figure 4 It is a flow chart of an embodiment of a liquid level control method for a blood purification device of the present invention.

[0024] Figure 5 This is a schematic diagram of a display screen displaying a liquid level increase button and a liquid level decrease button in an embodiment of a liquid level control method for a blood purification device of the present invention.

[0025] Figure 6 This is a corresponding curve diagram between the detection temperature and the preset maximum rate value in the embodiment of the liquid level control method of the blood purification equipment of the present invention.

[0026] Figure 7 The first curve of the weight of the intravenous pot changing with time and the second curve of the real-time liquid level of the liquid in the intravenous pot changing with time displayed on the display screen in the embodiment of the liquid level control method of the blood purification equipment of the present invention are shown.

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0028] Example of a liquid level control method for a blood purification device:

[0029] The liquid level control method of the blood purification device of this embodiment is applied to the blood purification device, see Figure 1 The blood purification device includes components such as a host 1 and a display screen 2. The display screen 2 is a human-computer interactive touch screen. A circuit board that can interact with the display screen 2 is provided in the host 1. The circuit board is provided with a processor and a memory. The memory stores a computer program. When the computer program is executed by the processor, the various steps of the liquid level control method of the blood purification device in this embodiment are implemented, so that interactive communication can be achieved between the display screen 2 and the host 1. Medical staff can input instructions on the display screen 2 to enable the blood purification device to execute the various steps of the liquid level control method of the blood purification device in this embodiment according to the operating requirements of the medical staff to ensure the safety of the patient's blood purification treatment.

[0030] See also Figure 2 The extracorporeal circulation circuit of the blood purification equipment includes an arterial clamp 31, a blood pump 32, a heparin pump 33 (i.e., an anticoagulant pump), a blood purifier 34, a venous pot 36, a liquid level detector 35, a bubble detector 37, a blood detector 38, a venous clamp 39, an arterial line 310, and a venous line 311. The arterial line 310 outputs the human body's blood to the blood purifier 34, and the blood pump 32 is used to provide driving force so that the blood circulates between the arterial line 310 and the venous line 311. When the blood passes through the blood purifier 34, the blood purifier 34 can filter out specific molecular substances in the blood and purify it, and then return the purified blood to the human body through the venous line 311, so as to achieve the purpose of purifying blood and treating diseases.

[0031] Among them, the blood purification device of this embodiment can realize various blood purification treatment modes, such as slow ultrafiltration treatment mode, blood filtration treatment mode, hemodialysis treatment mode, hemodiafiltration treatment mode, dual plasma molecule adsorption system treatment mode, plasma adsorption treatment mode, plasma exchange treatment mode, dual plasma exchange treatment mode, blood perfusion treatment mode, etc. When the blood purification device is in different blood purification treatment modes, the type of blood purifier 34 will be different. For example, in the hemoperfusion treatment mode, the blood purifier 34 is a hemoperfusion device. For example, in the hemodialysis treatment mode, the blood purifier 34 is a dialyzer, etc. When the blood purification device is in different blood purification treatment modes, the extracorporeal blood circuit components of the blood purification device will also change. Figure 2 The most basic structure diagram of the extracorporeal circulation circuit of the blood purification device is shown. When the blood purification device is in different blood purification treatment modes, the extracorporeal circulation circuit of the blood purification device will be Figure 2 Improve or transform based on.

[0032] See also Figure 3 As an essential component of the blood purification device, the intravenous pot 36 buffers the blood flow rate within the venous line 311 when the intravenous pot 36 receives the patient's blood. It also removes air bubbles from the blood within the venous line 311 to ensure the safety of blood flow within the venous line 311. The liquid level within the intravenous pot 36 is an important indicator of the blood flow status within the venous line 311. The liquid level within the intravenous pot 36 must be maintained within a reasonable range to ensure the safety of the patient's blood purification treatment. The user also needs to adjust the liquid level within the intravenous pot 36 in real time to change the blood purification status of the blood purifier 34. Specifically, the inlet of the intravenous pot 36 and the outlet of the intravenous pot 36 are connected in series in the intravenous line 311. When there is liquid in the intravenous line 311, the intravenous line 311 outputs the liquid to the intravenous pot 36, and a certain volume of liquid will accumulate in the intravenous pot 36. The air pressure in the intravenous pot 36 is maintained at a constant level through the air regulating line 312, so that the liquid level in the intravenous pot 36 can be maintained in a stable state, ensuring the safety of the liquid flow in the intravenous line 311. The intravenous pot 36 can also promptly remove the liquid bubbles in the intravenous pot 36 to avoid bubble failure in the liquid returned to the patient's body by the intravenous line 311. When it is necessary to adjust the liquid level in the intravenous pot 36 upward, the venous clamp 39 on the venous line 311 is controlled to be closed, and the air pump 313 is turned on. The gas in the intravenous pot 36 is connected to the outside atmosphere through the air regulating line 312. The intravenous pot 36 is connected to the blood so that the liquid level in the intravenous pot 36 continues to rise; when it is necessary to adjust the liquid level in the intravenous pot 36 downward, the venous clamp 39 on the venous line 311 is controlled to be opened, and the air pump 313 is turned on. Air is pumped into the intravenous pot 36 through the air pump 313. As the air pressure of the gas in the intravenous pot 36 gradually increases, the liquid level in the intravenous pot 36 will continue to decrease.

[0033] In this embodiment, the liquid level of the liquid in the intravenous pot 36 refers to the liquid level height of the liquid stored in the intravenous pot 36, and is expressed as the ratio of the liquid level height of the liquid stored in the intravenous pot 36 to the maximum liquid level height of the liquid stored in the intravenous pot 36. For example, if the liquid level of the liquid in the intravenous pot 36 is 1 / 3 height, it means that the liquid level height of the liquid stored in the intravenous pot 36 is 1 / 3 of the maximum liquid level height of the liquid stored in the intravenous pot 36. Then, when the maximum liquid level height of the liquid stored in the intravenous pot 36 is 9 cm, the liquid level height of the liquid in the intravenous pot 36 is 3 cm.

[0034] See also Figure 4 , Figure 4 is a flow chart of the liquid level control method for the blood purification device of this embodiment, and the specific execution steps of the liquid level control method for the blood purification device of this embodiment are as follows.

[0035] Step S1: It is determined that the blood purification device is in the blood purification stage before executing step S2.

[0036] Specifically, the working process of the blood purification device is divided into the following stages: the pre-flushing stage, the blood drawing stage, the blood purification stage, and the blood return stage. In the pre-flushing stage, the arterial line 310, the blood purifier 34, and the venous line 311 are flushed in sequence with the pre-flushing liquid to remove impurities and gases in the arterial line 310, the blood purifier 34, and the venous line 311; in the blood drawing stage, the patient's blood is drawn into the arterial line 310; in the blood purification stage, the patient's blood is subjected to normal blood purification by the blood purifier 34; in the blood return stage, when the patient's blood purification treatment is about to end, the remaining blood in the arterial line 310, the blood purifier 34, and the venous line 311 needs to be returned to the patient's body. When the blood purification device is in the blood purification stage, the patient's blood purification treatment status can be judged according to the liquid level in the venous pot 36, which has clinical practical value.

[0037] Step S2, determining whether the real-time liquid level of the liquid in the intravenous pot 36 is within a preset liquid level range, if yes, executing step S3; if not, executing step S18.

[0038] The preset liquid level range represents the normal range of fluctuations in the liquid level within the intravenous pot 36 when the patient is undergoing normal blood purification treatment. This range is dependent on many factors, such as the patient's physical condition, the blood purification treatment mode used by the blood purification equipment, and the blood flow rate in the arterial line 310. Technicians pre-set this range based on clinical experience. For example, the preset liquid level range for the intravenous pot 36 is between 1 / 3 and 2 / 3 of the height. If the liquid level within the intravenous pot 36 is less than 1 / 3 of the height, air bubbles can easily be introduced into the blood discharged from the outlet of the intravenous pot 36. If the liquid level within the intravenous pot 36 is greater than 2 / 3 of the height, the blood pressure within the intravenous line 311 is too high, posing a threat to the patient's life, health, and safety. Therefore, only when the liquid level within the intravenous pot 36 is within the preset range does the blood flow within the intravenous line 311 remain normal.

[0039] Step S3, when step S2 determines that the real-time liquid level of the liquid in the intravenous pot 36 is within the preset liquid level range, step S3 detects the temperature of the liquid in the intravenous pot 36 to obtain a detection temperature.

[0040] In step S4 , it is determined whether the detected temperature is within a preset temperature range. If so, step S5 is executed; if not, step S18 is executed.

[0041] Step S5, when step S4 determines that the detected temperature is within the preset temperature range, step S5 controls the liquid level increase button 21 and the liquid level decrease button 22 displayed on the display screen 2 to be set to an activated state, and the user can trigger the liquid level increase button 21 and the liquid level decrease button 22 in the activated state on the display screen 2, such as Figure 5 shown.

[0042] Specifically, when the real-time liquid level of the liquid in the intravenous pot 36 is within the preset liquid level range, the liquid level control method of the blood purification equipment in this embodiment will also detect the temperature of the liquid in the intravenous pot 36 to obtain the detected temperature, and determine whether the detected temperature is within the preset temperature range. Only when the real-time liquid level of the liquid in the intravenous pot 36 is within the preset liquid level range and the detected temperature of the liquid in the intravenous pot 36 is within the preset temperature range, the liquid level of the intravenous pot 36 can be safely adjusted; otherwise, when the detected temperature of the liquid in the intravenous pot 36 exceeds the preset temperature range, if the liquid level of the liquid in the intravenous pot 36 is adjusted upward or downward, this will cause the heat of the liquid in the venous line 311 to accumulate or be lost, and the temperature of the liquid returned to the patient's body through the venous line 311 will be high or low, thereby compromising the safety of the patient's blood purification treatment. Therefore, the liquid level control method of the blood purification equipment in this embodiment determines whether the liquid level of the liquid in the intravenous pot 36 can be adjusted based on the detected temperature of the liquid in the intravenous pot 36. Only when the detected temperature of the liquid in the intravenous pot 36 is within the preset temperature range, the liquid level increase button 21 and the liquid level decrease button 22 will be set to the activated state. When adjusting the liquid level of the liquid in the intravenous pot 36, the patient's blood purification treatment process is in a safe state.

[0043] The preset temperature range is a standard range of values, which is set by technicians based on clinical experience, for example, the preset temperature range is 35°C to 37°C. In addition, the detected temperature of the liquid in the intravenous pot 36 refers to the average temperature of the liquid in the intravenous pot 36. When the detected temperature of the liquid in the intravenous pot 36 exceeds the preset temperature range, step S18 is executed to control the liquid level increase button 21 and the liquid level decrease button 22 displayed on the display screen 2 to be set to a disabled state, and control the blood purification equipment to issue an alarm signal to prevent the liquid level in the intravenous pot 36 from having a temperature failure during the adjustment process.

[0044] To ensure control accuracy, the liquid level control method for the blood purification device of this embodiment activates the liquid level increase button 21 and the liquid level decrease button 22 displayed on the display screen 2 only after determining that the real-time liquid level of the liquid in the intravenous pot 36 is within a preset liquid level range and further determining that the detected temperature is within the preset temperature range. Alternatively, the liquid level control method for the blood purification device may also activate the liquid level increase button 21 and the liquid level decrease button 22 displayed on the display screen 2 when determining in step S2 that the real-time liquid level of the liquid in the intravenous pot 36 is within the preset liquid level range.

[0045] Step S6, detecting the capacity of the venous pot 36 to obtain the capacity V1 of the venous pot 36, detecting the volume of the liquid in the venous pot 36 to obtain the liquid volume V2, and detecting the liquid flow of the arterial line 310 of the blood purification equipment to obtain the arterial line 310 flow Q.

[0046] For example, the capacity V1 of the intravenous pot 36 is 100 ml, and the liquid volume V2 is 60 ml, which means that there is still 40 ml of air remaining in the intravenous pot 36 .

[0047] Step S7: Calculate and obtain the preset safety time

[0048] Specifically, the flow rate Q of the arterial line 310 represents the rate at which the intravenous pot 36 is connected to the liquid, and "V1-V2" represents the remaining capacity of the intravenous pot 36 that can accommodate liquid. For example, if the capacity V1 of the intravenous pot 36 is 100 ml, the liquid volume V2 is 20 ml, and the flow rate Q of the arterial line 310 is 2 ml / min, the preset safety time is calculated. If the liquid level in the intravenous pot 36 is in the process of rising and adjusting, it will take another 40 minutes to fill the intravenous pot 36 .

[0049] Step S8 , triggering the liquid level increasing button 21 in the activated state, that is, the user triggers the liquid level increasing button 21 in the activated state on the display screen 2 .

[0050] Step S9, controls the blood purification equipment to perform an upward adjustment operation on the liquid level of the liquid in the venous pot 36 of the blood purification equipment, and at the same time controls the display screen 2 of the blood purification equipment to display the real-time liquid level of the liquid in the venous pot 36, and obtains the first trigger time T1 when the liquid level increase button 21 is continuously triggered, wherein the first trigger time T1 is proportional to the liquid level rise amplitude H1 of the liquid in the venous pot 36.

[0051] Specifically, when the liquid level increase button 21 is in an activated state, the user can trigger the activated liquid level increase button 21, thereby controlling the blood purification device to increase the liquid level of the liquid in the intravenous pot 36 of the blood purification device, and during the rising process of the liquid level in the intravenous pot 36, the display screen 2 of the blood purification device is controlled to display the real-time liquid level of the liquid in the intravenous pot 36, so that the user can timely understand the rising situation of the liquid level in the intravenous pot 36. The longer the first triggering time T1 of the liquid level increase button 21 is continuously triggered, the higher the liquid level rise height of the liquid in the intravenous pot 36 will be. Therefore, in this embodiment, the first triggering time T1 of the liquid level increase button 21 is continuously triggered and the liquid level rise amplitude H1 of the liquid in the intravenous pot 36 are in direct proportion. Preferably, The liquid level of the liquid in the intravenous pot 36 after the upward adjustment operation h represents the original liquid level of the liquid in the intravenous pot 36. Therefore, the specific increase in the liquid level H1 of the liquid in the intravenous pot 36 can be controlled according to the first triggering time T1 of the continuous triggering of the liquid level increase button 21 in the activated state by the user. The adjustment operation is convenient and efficient, the adjustment accuracy of the liquid level of the liquid in the intravenous pot 36 is improved, and the liquid level of the liquid in the intravenous pot 36 can be adaptively adjusted, thereby improving the safety of the liquid level control and adjustment of the liquid in the intravenous pot 36, making blood purification treatment safer and more reliable.

[0052] Among them, the specific principle of controlling the liquid level rise in the intravenous pot 36 is as follows: when the user triggers the liquid level increase button 21 in the activated state, the venous clamp 39 on the venous line 311 is controlled to be closed, and the air pump 313 is turned on. The gas in the intravenous pot 36 is connected to the outside atmosphere through the air adjustment line 312. The intravenous pot 36 is connected to the blood so that the liquid level in the intravenous pot 36 continues to rise, wherein the time when the intravenous pot 36 is connected to the blood is equal to the first trigger time T1 of the continuous triggering of the liquid level increase button 21; when the user no longer triggers the liquid level increase button 21 in the activated state, the air pump 313 is turned off, the gas in the intravenous pot 36 is disconnected from the outside atmosphere, and the air pressure of the gas in the intravenous pot 36 is maintained in a stable state, the venous clamp 39 on the venous line 311 is opened, and the liquid level in the intravenous pot 36 is kept constant, thereby completing the liquid level increase adjustment operation of the liquid in the intravenous pot 36.

[0053] Step S10 , detecting whether the first trigger time T1 is greater than the preset safety time ΔT, if yes, executing step S11 ; if not, executing step S9 .

[0054] Step S11 , when the first trigger time T1 detected in step S10 is greater than the preset safety time ΔT, step S11 sets the liquid level increase button 21 to a disabled state.

[0055] Specifically, the preset safety time ΔT represents the maximum liquid access time of the intravenous pot 36. Once the first trigger time T1 of the liquid level increase button 21 in the activated state is continuously triggered is greater than the preset safety time ΔT, the intravenous pot 36 will be filled with blood, causing the blood in the venous line 311 to be infected. Therefore, once the liquid level control method of the blood purification equipment of this embodiment detects that the first trigger time T1 of the liquid level increase button 21 in the activated state is continuously triggered is greater than the preset safety time ΔT, the liquid level increase button 21 is immediately set to the disabled state. Even if the user continues to trigger the liquid level increase button 21, the liquid level in the intravenous pot 36 will not continue to rise, thereby ensuring the safety of the liquid level in the intravenous pot 36 during the rising adjustment operation.

[0056] Step S12, determining whether the liquid level in the intravenous pot 36 is greater than the preset maximum liquid level after the liquid level rises, if so, executing step S13; if not, executing step S9.

[0057] Step S13: When it is determined in step S12 that the liquid level in the intravenous pot 36 rises to a level greater than the preset maximum liquid level, step S13 controls the blood purification device to issue an alarm signal.

[0058] Specifically, the preset maximum liquid level represents the highest safe liquid level that can be tolerated within the intravenous bottle 36. For example, the preset maximum liquid level is 3 / 4 of the height. The preset maximum liquid level is determined by technicians based on data from multiple clinical trials and is affected by many factors, such as the material of the intravenous bottle 36. When the liquid level in the intravenous pot 36 is adjusted upward, the increased liquid level of the liquid in the intravenous pot 36 will be in a safe state only when the increased liquid level after the liquid level in the intravenous pot 36 rises is less than or equal to the preset maximum liquid level value; on the contrary, when the increased liquid level after the liquid level in the intravenous pot 36 rises is greater than the preset maximum liquid level value, the increased liquid level after the liquid level in the intravenous pot 36 has exceeded the maximum safe liquid level, and the liquid level in the intravenous pot 36 has continuously risen by too much, thereby causing the increased liquid level in the intravenous pot 36 to be in an unsafe state. The alarm signal issued can prompt the user: the increased liquid level of the intravenous pot 36 after rising is in an unsafe state, and the user promptly handles the unsafe liquid level state of the intravenous pot 36, thereby ensuring the safety of the liquid level in the intravenous pot 36 during the increasing adjustment operation.

[0059] It should be noted that there is a difference between the "preset maximum liquid level value" in step S12 and the "maximum value of the preset liquid level range" in step S2. The preset maximum liquid level value in step S12 refers to the highest safe liquid level that the intravenous pot 36 can withstand and is used to assess whether the liquid level in the intravenous pot 36 is in a safe state during the upward adjustment operation. The preset liquid level range in step S2 refers to the normal fluctuation range of the liquid level in the intravenous pot 36 when the patient is undergoing normal blood purification treatment. Only when the liquid level in the intravenous pot 36 is within the preset liquid level range does the liquid level in the intravenous pot 36 meet the safe adjustment conditions and the liquid level increase button 21 and liquid level decrease button 22 are set to an activated state. Therefore, the preset maximum liquid level value and the maximum value of the preset liquid level range serve completely different functions.

[0060] Step S14 , triggering the liquid level lowering button 22 in the activated state, that is, the user triggers the liquid level lowering button 22 in the activated state on the display screen 2 .

[0061] Step S15, control the blood purification equipment to perform a downward adjustment operation on the liquid level of the liquid in the venous pot 36 of the blood purification equipment, and at the same time control the display screen 2 of the blood purification equipment to display the real-time liquid level of the liquid in the venous pot 36, and obtain the second trigger time T2 when the liquid level reduction button 22 is continuously triggered, wherein the second trigger time T2 is proportional to the liquid level drop amplitude H2 of the liquid in the venous pot 36.

[0062] Specifically, when the liquid level reduction button 22 is in an activated state, the user can trigger the activated liquid level reduction button 22, thereby controlling the blood purification device to perform a downward adjustment operation on the liquid level of the liquid in the intravenous pot 36 of the blood purification device, and during the process of the liquid level of the liquid in the intravenous pot 36 decreasing, the display screen 2 of the blood purification device is controlled to display the real-time liquid level of the liquid in the intravenous pot 36, so that the user can timely understand the liquid level drop of the liquid in the intravenous pot 36. When the second triggering time T2 of the liquid level reduction button 22 being continuously triggered is longer, the liquid level of the liquid in the intravenous pot 36 will drop more. Therefore, in this embodiment, the second triggering time T2 of the liquid level reduction button 22 being continuously triggered is proportional to the liquid level drop amplitude H2 of the liquid in the intravenous pot 36. Preferably, The liquid level of the liquid in the intravenous pot 36 after the adjustment operation is lowered h represents the original liquid level of the liquid in the intravenous pot 36. Therefore, according to the second triggering time T2 of the user continuously triggering the liquid level down adjustment button 22 in the activated state, the specific drop amplitude H2 of the liquid level in the intravenous pot 36 can be controlled. The adjustment operation is convenient and efficient, the adjustment accuracy of the liquid level in the intravenous pot 36 is improved, and the liquid level in the intravenous pot 36 can be adaptively adjusted, thereby improving the safety of the liquid level control and adjustment of the liquid in the intravenous pot 36, making blood purification treatment safer and more reliable.

[0063] Among them, the specific principle of controlling the liquid level drop of the liquid in the intravenous pot 36 is: when the user triggers the liquid level reduction button 22 in the activated state, the venous clamp 39 on the venous line 311 is controlled to open, and the air pump 313 is turned on, and the air is pumped into the intravenous pot 36 through the air pump 313. As the air pressure of the gas in the intravenous pot 36 gradually increases, the liquid level of the liquid in the intravenous pot 36 will continue to drop, and the time for the air pump 313 to pump air into the intravenous pot 36 is equal to the second triggering time T2 of the continuous triggering of the liquid level reduction button 22; when the user no longer triggers the liquid level reduction button 22 in the activated state, the air pump 313 is turned off, the gas in the intravenous pot 36 is disconnected from the outside atmosphere, and the air pressure of the gas in the intravenous pot 36 is maintained in a stable state, and then the liquid level of the liquid in the intravenous pot 36 is kept constant, so as to complete the liquid level drop adjustment operation of the liquid in the intravenous pot 36.

[0064] Step S16, determining whether the lowered liquid level of the liquid in the intravenous pot 36 is less than the preset minimum liquid level. If so, executing step S17; if not, executing step S15.

[0065] Step S17: When it is determined in step S16 that the lowered liquid level of the liquid in the intravenous pot 36 is lower than the preset minimum liquid level, step S17 controls the blood purification device to send an alarm signal.

[0066] Step S18, when step S2 determines that the real-time liquid level in the intravenous pot 36 exceeds the preset liquid level range, or when step S4 determines that the detected temperature exceeds the preset temperature range, step S18 controls the liquid level increase button 21 and the liquid level decrease button 22 displayed on the display screen 2 to be set to a disabled state, and controls the blood purification equipment to send an alarm signal.

[0067] When both the liquid level increase button 21 and the liquid level decrease button 22 are set to the disabled state, neither the liquid level increase button 21 nor the liquid level decrease button 22 can be triggered, and an alarm signal is sent to the user. Once the user receives the alarm signal, he will immediately know that the liquid level in the intravenous pot 36 is in a fault state, and the user will deal with the fault state of the intravenous pot 36 in time.

[0068] Step S19: Detect the pressure of the gas in the intravenous pot 36 to obtain a pressure detection value.

[0069] Step S20, determining whether the pressure detection value is greater than a preset pressure safety value, if so, executing step S21; if not, executing step S22.

[0070] Step S21 , when step S20 determines that the pressure detection value is greater than the preset pressure safety value, step S21 controls the blood purification device to send an overpressure fault signal of the venous pot 36 .

[0071] Specifically, when the real-time liquid level in the intravenous pot 36 is determined to be outside a preset liquid level range, a pressure sensor installed on the gas regulating line 312 of the intravenous pot 36 detects the pressure value of the gas in the intravenous pot 36. The pressure value is the venous pressure in the intravenous line 311, for example, 150 kPa. Based on this pressure value, it is possible to determine whether the pressure of the gas in the intravenous pot 36 is excessive. If the pressure value is greater than the preset pressure safety value, it indicates that the intravenous pot 36 has experienced an overpressure fault. An audible prompt is issued to the user, indicating that the intravenous pot 36 has experienced an overpressure fault. Upon hearing the audible prompt, the user will be alerted to the overpressure fault in the intravenous pot 36, ensuring the safe flow of liquid in the intravenous line 311. When the intravenous pot 36 experiences an overpressure fault, it can cause blood to be malfunctioning while being returned to the patient's veins, causing discomfort to the patient and even leading to the presence of bubbles, impurities, and other problems in the intravenous line 311.

[0072] The preset pressure safety value is a pre-set value obtained by technicians after performing pressure tests on the intravenous pot 36 under normal conditions. This average pressure value serves as the preset pressure safety value. For example, if the preset pressure safety value is 150 kPa, when the pressure test value exceeds 150 kPa, it is determined that the intravenous pot 36 has an overpressure fault. Therefore, the liquid level control method of the blood purification device of this embodiment can promptly eliminate the problem of overpressure faults in the intravenous pot 36 based on the pressure test value of the gas in the intravenous pot 36.

[0073] It should be noted that the pressure of the gas in the intravenous pot 36 is detected to obtain a pressure detection value only when the real-time liquid level of the liquid in the intravenous pot 36 is determined to be outside the preset liquid level range. When the real-time liquid level of the liquid in the intravenous pot 36 is determined to be within the preset liquid level range, the pressure of the gas in the intravenous pot 36 is not detected to obtain a pressure detection value. This is because clinical practice has shown that when the real-time liquid level of the liquid in the intravenous pot 36 is abnormal, it is often accompanied by an overpressure fault in the intravenous pot 36. Therefore, the liquid level control method of the blood purification device of this embodiment can accurately determine whether the intravenous pot 36 has an overpressure fault, which is equivalent to obtaining the specific cause of the abnormal real-time liquid level of the liquid in the intravenous pot 36.

[0074] Step S22 , when step S20 determines that the pressure detection value is less than or equal to the preset pressure value, step S22 detects the amount of bubbles in the liquid in the venous line 311 of the blood purification device to obtain the amount of bubbles in the venous line 311 .

[0075] Step S23, determining whether the bubble volume in the venous line 311 is greater than a preset bubble volume, if yes, executing step S24; if not, executing step S22.

[0076] Step S24 , when step S23 determines that the bubble amount in the venous line 311 is greater than the preset bubble amount, step S24 controls the blood purification device to send a bubble fault signal of the venous line 311 .

[0077] A bubble detector 37 is provided on the venous line 311 connected to the outlet of the venous pot 36. The bubble detector 37 detects the amount of bubbles in the liquid in the venous line 311 to obtain a bubble volume in the venous line 311. The bubble detector 37 converts the bubble volume in the venous line 311 from a non-electrical signal into an electrical signal (e.g., a voltage signal). Based on the electrical signal, the bubble detector 37 determines whether there are excessive bubbles in the liquid in the venous line 311. If the bubble volume in the venous line 311 is greater than a preset bubble volume, it indicates that there are excessive bubbles in the liquid in the venous line 311, which in turn indicates a bubble fault in the venous line 311. A light source prompt signal (where the light source prompt signal is a specific type of bubble fault signal) is used to alert the user that a bubble fault has occurred in the venous line 311. Upon seeing the light source prompt signal, the user will promptly address the bubble fault in the venous line 311. Therefore, the liquid level control method of the blood purification device of this embodiment detects whether there is a bubble fault in the venous line 311, thereby ensuring the safe flow of liquid in the venous line 311.

[0078] It should be noted that the liquid level control method of this embodiment of the blood purification device detects and determines whether a bubble fault has occurred in the venous line 311. This is based on the determination that the pressure value of the gas within the venous pot 36 is less than or equal to a preset pressure value, i.e., that the venous pot 36 has not experienced an overpressure fault. Specifically, if it is determined that the venous pot 36 has not experienced an overpressure fault, this indicates that the abnormal real-time liquid level of the liquid within the venous pot 36 is not caused by an overpressure fault in the venous pot 36, but rather by a bubble fault in the venous pot 311. The cause of a bubble fault in the venous pot 311 is typically a gap in the connection between the venous pot 36 and the arterial line 310, or a crack in the housing of the venous pot 36. Therefore, when the user sees the light source prompt signal, they will be aware of the bubble fault in the venous pot 311, and thus will know the specific cause of the abnormal real-time liquid level of the liquid within the venous pot 36, allowing the user to promptly and accurately address the abnormal real-time liquid level of the liquid within the venous pot 36.

[0079] After the liquid level increasing button 21 in the activated state is triggered in step S8 , steps S25 to S27 may be executed.

[0080] In step S25 , it is determined whether the temperature of the liquid in the intravenous pot 36 is rising. If so, step S26 is executed; if not, step S27 is executed.

[0081] Step S26 , controlling the display screen 2 to display the detected temperature of the liquid in the intravenous pot 36 .

[0082] Step S27: Control the blood purification equipment to send out an alarm signal.

[0083] Specifically, after the activated liquid level increase button 21 is triggered, the liquid level in the intravenous pot 36 of the blood purification device is adjusted upward. More liquid will gradually accumulate in the intravenous pot 36. On the basis of the external ambient temperature remaining normal and stable, the temperature of the liquid in the intravenous pot 36 will accumulate as the liquid continues to rise, and the temperature of the liquid in the intravenous pot 36 will rise. For example, before the user triggers the activated liquid level increase button 21, the temperature of the liquid in the intravenous pot 36 is 35°C. When the user continuously triggers the liquid level increase button 21 for the first trigger time T1 of 1 minute, the temperature of the liquid in the intravenous pot 36 rises to 37°C after the liquid level increase adjustment operation. Therefore, the temperature of the liquid in the intravenous pot 36 will show an upward trend during the liquid level increase adjustment operation, and the specific temperature increase trend is related to the liquid level increase rate of the liquid in the intravenous pot 36. When the temperature of the liquid in the intravenous pot 36 remains unchanged or decreases during the liquid level rising adjustment operation, it means that there is a temperature fault in the liquid in the intravenous pot 36. The reason for this fault is usually a sudden and sharp drop in the external ambient temperature, or the presence of foreign matter in the intravenous pot 36. The alarm signal can prompt the user: the temperature of the liquid in the intravenous pot 36 is abnormal. Once the user receives the alarm signal, he will promptly deal with the temperature abnormality of the liquid in the intravenous pot 36, thereby preventing the temperature fault of the liquid in the intravenous pot 36.

[0084] After the liquid level down button 22 in the activated state is triggered in step S14 , steps S28 to S30 may be executed.

[0085] Step S28, determining whether the temperature of the liquid in the intravenous pot 36 is decreasing, if so, executing step S29; if not, executing step S30.

[0086] In step S29 , the display screen 2 is controlled to display the detected temperature of the liquid in the intravenous pot 36 .

[0087] Step S30: Control the blood purification equipment to send out an alarm signal.

[0088] Specifically, when the liquid level of the liquid in the intravenous pot 36 is lowered by triggering the activated liquid level-down adjustment button 22, the liquid level in the intravenous pot 36 decreases. As the liquid in the intravenous pot 36 flows out, it loses heat, and therefore, under normal circumstances, the temperature of the liquid in the intravenous pot 36 decreases. The liquid level control method of the blood purification apparatus of this embodiment determines whether the liquid level in the intravenous pot 36 is in a faulty state during the lowering adjustment operation based on the temperature of the liquid in the intravenous pot 36, thereby promptly eliminating any faulty state that may occur during the lowering adjustment operation.

[0089] After the liquid level increasing button 21 in the activated state is triggered in step S8 , steps S31 to S33 may be executed.

[0090] Step S31 , detecting the rate of increase of the liquid level in the intravenous pot 36 .

[0091] Step S32, determining whether the liquid level rising rate is greater than a preset maximum rate value, if so, executing step S33; if not, executing step S31.

[0092] Step S33: When step S32 determines that the liquid level rising rate is greater than the preset maximum rate, step S33 controls the blood purification equipment to send an alarm signal.

[0093] Specifically, the preset maximum rate value represents the maximum safe rising rate of the liquid level in the intravenous pot 36. Only when the rising rate of the liquid level in the intravenous pot 36 is less than or equal to the preset maximum rate value, the liquid level in the intravenous pot 36 will be in a normal changing state; on the contrary, when the rising rate of the liquid level in the intravenous pot 36 is greater than the preset maximum rate value, the liquid level in the intravenous pot 36 rises too fast, which will cause the liquid pressure in the venous line 311 to be too high, and will damage the safety of the patient's blood purification treatment during the blood purification stage, such as causing the patient's venous pressure to be too high. Among them, the preset maximum rate value is affected by the patient's own physical condition, such as the patient's weight, etc. The preset maximum rate value is set in advance by the technical personnel. For example, the preset maximum rate value is 1 cm / min, that is, when the liquid level of the liquid in the intravenous pot 36 rises by less than or equal to 1 cm within 1 minute, it means that the liquid level of the liquid in the intravenous pot 36 is in a normal changing state; when the liquid level of the liquid in the intravenous pot 36 rises by more than 1 cm within 1 minute, it means that the liquid level of the liquid in the intravenous pot 36 rises too fast, and the liquid level of the liquid in the intravenous pot 36 is in a fault state. An alarm signal is issued to remind the user: the liquid level of the liquid in the intravenous pot 36 is in a fault changing state. Once the user receives the alarm signal, he will immediately deal with the liquid level fault of the liquid in the intravenous pot 36.

[0094] When step S2 determines that the real-time liquid level of the liquid in the intravenous pot 36 is within the preset liquid level range, and when step S4 determines that the detected temperature of the liquid in the intravenous pot 36 is within the preset temperature range, and before step S8 triggers the liquid level increase button 21 in the activated state, step S34 can be executed.

[0095] In step S34, the preset maximum rate value in step S32 is set according to the detected temperature of the liquid in the intravenous pot 36, that is, the preset maximum rate value is inversely proportional to the detected temperature.

[0096] Specifically, before the user triggers the liquid level increase button 21 in the activated state, the preset maximum rate value will be set in advance according to the detected temperature of the liquid in the intravenous pot 36, so that the preset maximum rate value can be used to accurately judge whether the liquid level rise rate of the liquid in the intravenous pot 36 is too fast. After many clinical practices by technical personnel, it was found that when the detected temperature of the liquid in the intravenous pot 36 is higher, the liquid in the intravenous pot 36 is more susceptible to infection from the source of contamination. If the liquid level rise rate of the liquid connected to the intravenous pot 36 is higher, the liquid in the intravenous pot 36 is affected by more uncontrollable factors, and the liquid level rise amplitude H1 of the liquid in the intravenous pot 36 is more difficult to control during the rising adjustment operation, which endangers the safety of the liquid flow in the intravenous line 311. In this embodiment, the preset maximum rate value is inversely proportional to the detected temperature. For example, Figure 6The corresponding curve between the detected temperature of the liquid in the intravenous pot 36 and the preset maximum rate value is shown. When the detected temperature of the liquid in the intravenous pot 36 is obtained (equivalent to the value of the preset maximum rate value), the Figure 6 The horizontal coordinate value of the middle curve) is as follows Figure 6 The corresponding curve in the preset rate can be found (equivalent to Figure 6 The corresponding vertical coordinate value of the middle curve), therefore, the liquid level control method of the blood purification equipment in this embodiment can scientifically and reasonably obtain the preset maximum rate value according to the detected temperature of the liquid in the venous pot 36, so as to ensure that the liquid level rising process of the liquid in the venous pot 36 is always in a safe state.

[0097] After the preset maximum rate value in step S32 is set according to the detected temperature of the liquid in the intravenous pot 36 in step S34, steps S35 to S39 are executed.

[0098] Step S35: Detect the diameter of the arterial line 310 of the blood purification device to obtain the diameter of the arterial line

[0099] Step S36, according to the diameter of the arterial line A calibration operation is performed on the preset maximum rate value to obtain a calibrated preset maximum rate value.

[0100] Specifically, the arterial line diameter Refers to the inner diameter of the arterial line 310. When the diameter of the arterial line is detected When the user triggers the activated liquid level increase button 21 to increase the liquid level in the intravenous pot 36, it is determined whether the liquid level increase rate in the intravenous pot 36 is greater than the calibrated preset maximum rate value. If it is determined that the liquid level increase rate in the intravenous pot 36 is greater than the calibrated preset maximum rate value, an audible and visual alarm signal is issued. When the value is larger, the flow rate variation range of the liquid in the arterial line 310 will also be larger, and the flow rate adjustable range of the liquid connected to the venous pot 36 will also be larger. Therefore, after setting the preset maximum rate value according to the detected temperature of the liquid in the venous pot 36 in step S34, the preset maximum rate value is set according to the diameter of the arterial line in step S36. Calibrate the preset rate maximum value to exclude arterial line diameter Changes in the process of setting the maximum value of the preset rate will cause interference errors. For example, when the diameter of the arterial line When the maximum value of the preset rate is larger, the method for calibrating the preset rate maximum value is to increase the preset rate maximum value. After increasing the preset rate maximum value, the liquid level rising rate of the liquid in the intravenous pot 36 has a larger adjustable range, which improves the flexibility of controlling the liquid level rising of the liquid in the intravenous pot 36. When the diameter of the arterial line is larger, the maximum value of the preset rate is increased. The smaller the value, the method for calibrating the preset maximum rate is to reduce the preset maximum rate. By reducing the preset maximum rate, it is prevented that the preset maximum rate is set too high, which may cause the liquid level rise rate in the intravenous bottle 36 to miss an alarm. The increase or decrease range of the preset maximum rate can be set based on the clinical experience of the technician.

[0101] Step S37: When the judgment is satisfied When the preset maximum rate value is reduced, a calibration operation is performed to obtain the preset maximum rate value after calibration.

[0102] Step S38: When the judgment is satisfied When the preset maximum rate value is maintained, the calibration operation is performed to obtain the preset maximum rate value after calibration.

[0103] Step S39: When the judgment is satisfied When the preset maximum rate value is increased, a calibration operation is performed to obtain the preset maximum rate value after calibration.

[0104] Specifically, the technicians set up a table based on clinical technical experience, as shown in Table 1 below. In Table 1, according to the diameter of the arterial line, The calibration rate variation range corresponding to the preset maximum rate value can be found, and then the preset maximum rate value obtained in step S34 according to the detected temperature of the liquid in the intravenous pot 36 is added to the corresponding calibration rate variation range in Table 1 to obtain the calibrated preset maximum rate value.

[0105] Table 1

[0106]

[0107] Table 1 above shows the arterial line diameters The corresponding relationship between the calibration rate change amplitude and the preset maximum rate value, such as when the arterial line diameter If the maximum value of the preset rate is 8 cm, then according to the corresponding relationship in Table 1 above, it is necessary to increase the maximum value of the preset rate by 0.3 cm / min to complete the calibration process of the maximum value of the preset rate. For example, in step S34, the maximum value of the preset rate obtained according to the detected temperature of the liquid in the intravenous pot 36 is 1 cm / min, and the maximum value of the preset rate after calibration is 1.3 cm / min. Therefore, the liquid level control method of the blood purification equipment in this embodiment is based on the diameter of the arterial line. The preset maximum rate value is calibrated to improve the fault judgment accuracy of the liquid level rising rate of the liquid in the intravenous pot 36.

[0108] After the liquid level increasing button 21 in the activated state is triggered in step S8 , steps S40 and S41 may be executed.

[0109] In step S40 , the triggered liquid level increase button 21 is displayed on the display screen 2 in a magnified graphical form, and the liquid level decrease button 22 is set to a disabled state.

[0110] After the liquid level lowering button 22 in the activated state is triggered in step S14 , step S41 may be executed.

[0111] In step S41 , the triggered liquid level lowering button 22 is displayed on the display screen 2 in a magnified graphic form, and the liquid level upper adjusting button 21 is set to a disabled state.

[0112] Specifically, when the user triggers either the activated liquid level increase button 21 or the activated liquid level decrease button 22, the remaining buttons on the display screen 2 will be set to a disabled state, and the user-triggered liquid level increase button 21 or the user-triggered liquid level decrease button 22 will be displayed in an enlarged graphic form on the display screen 2. The user can clearly know whether the button he triggered is the liquid level increase button 21 or the liquid level decrease button 22, so as to prevent the user from accidentally triggering the activated liquid level increase button 21 or the activated liquid level decrease button 22 continuously, resulting in confusion in the liquid level control logic of the liquid in the intravenous pot 36. For example, when the user first triggers the active liquid level adjustment button 21, the liquid level adjustment button 22 is set to the disabled state, and the user cannot trigger the liquid level adjustment button 22 again, thereby ensuring the safety and stability of the liquid level increase adjustment operation of the liquid in the intravenous pot 36. When the user first triggers the active liquid level adjustment button 22, the liquid level adjustment button 21 is set to the disabled state, and the user cannot trigger the liquid level adjustment button 21 again, thereby avoiding the problem of incorrect triggering on the display screen 2 causing incorrect liquid level control of the liquid in the intravenous pot 36. If the user triggers the active liquid level adjustment button 21 and the active liquid level adjustment button 22 at the same time, this situation will not cause the liquid level in the intravenous pot 36 to change, and it will be directly judged as a false trigger, thereby improving the control accuracy of the liquid level adjustment button 21 or the liquid level adjustment button 22 on the display screen 2.

[0113] After the liquid level lowering button 22 in the activated state is triggered in step S14 , steps S42 to S45 may be executed.

[0114] Step S42 , detecting the liquid output rate of the output end of the intravenous pot 36 .

[0115] Step S43, determining whether the liquid output rate is greater than a preset safety rate, if so, executing step S44; if not, executing step S42.

[0116] Step S44 , when step S43 determines that the liquid output rate is greater than the preset safety rate, step S44 controls the blood purification equipment to issue a liquid output failure alarm signal of the venous pot 36 .

[0117] During the process of adjusting the liquid level in the intravenous pot 36 to decrease, the air pump 313 pumps air into the intravenous pot 36, causing the output end of the intravenous pot 36 to output liquid to the venous line 311, thereby lowering the liquid level in the intravenous pot 36 and increasing the liquid output rate from the output end of the intravenous pot 36. The preset safety rate represents a safe value for the rate of liquid output from the intravenous line 311. The preset safety rate is determined by technicians through multiple clinical technical experiences and technical experiments, for example, a preset safety rate of 10 ml / min. Only when the rate of liquid returned to the patient from the intravenous line 311 (i.e., the liquid output rate from the output end of the intravenous pot 36) is less than or equal to the preset safety rate will the patient's blood purification treatment process be safe. Conversely, when the rate at which the liquid is returned to the patient through the venous line 311 (i.e., the rate at which the liquid is output from the output end of the venous pot 36) exceeds the preset safety rate, this indicates that the rate at which the liquid is returned to the patient through the venous line 311 is too high, which can cause discomfort to the patient or even endanger the patient's life. A fault alarm signal is then issued to the user, indicating that the rate at which the liquid is output from the output end of the venous pot 36 is too high. Upon receiving the fault alarm signal, the user will immediately address the liquid output failure at the output end of the venous pot 36. Therefore, the liquid level control method of the blood purification apparatus of this embodiment can ensure the safe output of liquid from the output end of the venous pot 36 during the liquid level adjustment operation of the venous pot 36.

[0118] When it is determined in step S2 that the real-time liquid level of the liquid in the intravenous pot 36 is within the preset liquid level range, steps S45 and S46 may be executed.

[0119] Step S45 , detecting the weight of the intravenous pot 36 , and controlling the display screen 2 to display a first variation curve of the weight of the intravenous pot 36 over time.

[0120] Step S46 , controlling the display screen 2 to display a second variation curve of the real-time liquid level of the liquid in the intravenous pot 36 versus time.

[0121] Specifically, when the real-time liquid level of the liquid in the intravenous pot 36 is within the preset liquid level range, the blood in the intravenous line 311 is in a normal flow state, and the user can trigger the active liquid level adjustment button 21 or the active liquid level adjustment button 22 at any time. The first change curve in step S45 reflects the change of the weight of the intravenous pot 36 over time, and the second change curve in step S46 reflects the change of the real-time liquid level of the liquid in the intravenous pot 36 over time. When the user does not trigger the active liquid level adjustment button 21 or the active liquid level adjustment button 22, both the weight of the intravenous pot 36 and the real-time liquid level of the liquid in the intravenous pot 36 should remain unchanged under normal circumstances, such as Figure 7 As shown, the first variation curve and the second variation curve are both horizontal straight lines. When the user triggers the active liquid level adjustment button 21 or the active liquid level adjustment button 22, the weight of the intravenous pot 36 and the real-time liquid level of the liquid in the intravenous pot 36 normally follow the same variation pattern. For example, when the user triggers the active liquid level adjustment button 21, the weight of the intravenous pot 36 and the real-time liquid level of the liquid in the intravenous pot 36 normally increase; when the user triggers the active liquid level adjustment button 22, the weight of the intravenous pot 36 and the real-time liquid level of the liquid in the intravenous pot 36 normally decrease.

[0122] Therefore, the liquid level control method for the blood purification device of this embodiment controls the display screen 2 to simultaneously display the first and second change curves. The user can directly see on the display screen 2 whether the fluctuation patterns of the first and second change curves are consistent, thereby clearly determining whether errors have occurred in the real-time liquid level detection process and the weight detection process of the liquid in the intravenous pot 36. For example, when the user triggers the activated liquid level increase button 21, the first change curve shows an upward increase pattern, while the second change curve shows a downward decrease pattern. If the change patterns of these two curves are inconsistent, it indicates that errors have occurred in the real-time liquid level detection process and the weight detection process of the liquid in the intravenous pot 36. Based on the changes in the first and second change curves, the user can determine whether errors have occurred in the weight detection process and the real-time liquid level detection process of the liquid in the intravenous pot 36, thereby eliminating any problems in the liquid level adjustment operation of the liquid in the intravenous pot 36 and ensuring the safety of the liquid level adjustment operation of the liquid in the intravenous pot 36.

[0123] Blood purification equipment embodiment:

[0124] The blood purification device of this embodiment includes components such as a host 1 and a display screen 2. The display screen 2 is a human-machine interactive touch screen. A circuit board that can interact with the display screen 2 is provided in the host 1. A processor and a memory are provided on the circuit board. The memory stores a computer program. When the computer program is executed by the processor, each step of the liquid level control method of the above-mentioned blood purification device is implemented.

[0125] For example, a computer program can be divided into one or more modules, one or more of which are stored in a memory and executed by a processor to implement the various modules of the present invention. One or more modules can be a series of computer program instruction segments that can perform specific functions, and the instruction segments are used to describe the execution process of the computer program in a terminal device.

[0126] The processor referred to in the present invention may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor. The processor is the control center of an electrical appliance, connecting all parts of the appliance using various interfaces and circuits.

[0127] The memory can be used to store computer programs and / or modules. The processor implements the various functions of the appliance by running or executing the computer programs and / or modules stored in the memory, as well as accessing data stored in the memory. The memory can primarily include a program storage area and a data storage area. The program storage area can store an operating system, at least one application required for a function, and the data storage area can store data generated based on the use of the appliance. Furthermore, the memory can include high-speed random access memory and non-volatile memory, such as a hard disk, internal memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) card, a flash card, at least one disk storage device, a flash memory device, or other volatile solid-state storage device.

[0128] Computer readable storage medium embodiment:

[0129] If the computer program stored in the memory of the blood purification device is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present invention can implement all or part of the processes in the above-mentioned embodiment method by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by a processor, it can implement each step of the liquid level control method of the blood purification device.

[0130] Among them, computer programs include computer program code, which may be in source code form, object code form, executable files, or some intermediate form. Computer-readable media may include: any entity or device capable of carrying computer program code, recording media, USB flash drives, removable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signals, telecommunications signals, and software distribution media. It should be noted that the content included in computer-readable media may be appropriately increased or decreased based on the requirements of legislation and patent practice within a jurisdiction. For example, in some jurisdictions, based on legislation and patent practice, computer-readable media does not include electric carrier signals and telecommunications signals.

[0131] The above embodiments are only preferred examples of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structure, features and principles of the patent application scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A blood purification device, characterized in that: The device comprises a host and a display screen. The host is provided with a circuit board capable of interactive communication with the display screen. The circuit board is provided with a processor and a memory. The memory stores a computer program. When the computer program is executed by the processor, the liquid level control method of the blood purification device described below is implemented, including: triggering an activated liquid level increase button to control the blood purification device to increase the liquid level of the liquid in the intravenous pot of the blood purification device, and controlling a display screen of the blood purification device to display the real-time liquid level of the liquid in the intravenous pot, and obtaining a first triggering time T1 of the liquid level increase button being continuously triggered, wherein the first triggering time T1 is proportional to the liquid level increase amplitude H1 of the liquid in the intravenous pot; Alternatively, triggering an activated liquid level lowering button to control the blood purification device to perform a lowering operation on the liquid level of the liquid in the intravenous pot of the blood purification device, and simultaneously controlling a display screen of the blood purification device to display the real-time liquid level of the liquid in the intravenous pot, and obtaining a second triggering time T2 when the liquid level lowering button is continuously triggered, wherein the second triggering time T2 is proportional to the liquid level lowering amplitude H2 of the liquid in the intravenous pot; When it is determined that the real-time liquid level of the liquid in the intravenous bottle is within the preset liquid level range, the liquid level control method of the blood purification device further includes: detecting the temperature of the liquid in the intravenous bottle to obtain a detection temperature; Determining whether the detected temperature is within a preset temperature range; If yes, the liquid level increase button and the liquid level decrease button displayed on the display screen are controlled to be set to an activated state; If not, the liquid level increase button and the liquid level decrease button displayed on the display screen are controlled to be set to a disabled state, and the blood purification device is controlled to send out an alarm signal.

2. The blood purification device according to claim 1, characterized in that: Before triggering the liquid level increasing button in the activated state, the liquid level control method of the blood purification device further includes: Detecting the capacity of the venous pot to obtain the venous pot capacity V1, detecting the volume of the liquid in the venous pot to obtain the liquid volume V2, and detecting the liquid flow rate of the arterial line of the blood purification device to obtain the arterial line flow rate Q; Calculate the preset safety time When it is detected that the first trigger time T1 is greater than the preset safety time ΔT, the liquid level increasing button is set to a disabled state.

3. The blood purification device according to claim 1, characterized in that: After triggering the liquid level increasing button in the activated state, the liquid level control method of the blood purification device further includes: Determining whether the temperature of the liquid in the intravenous bottle is rising; If yes, controlling the display screen to display the detected temperature of the liquid in the intravenous bottle; If not, controlling the blood purification device to send out an alarm signal; Alternatively, after triggering the liquid level lowering button in the activated state, the liquid level control method of the blood purification device further includes: Determining whether the temperature of the liquid in the intravenous bottle has dropped; If yes, controlling the display screen to display the detected temperature of the liquid in the intravenous bottle; If not, controlling the blood purification device to send out an alarm signal; Alternatively, after triggering the liquid level lowering button in the activated state, the liquid level control method of the blood purification device further includes: detecting a liquid output rate from an output end of the intravenous pot; When it is determined that the liquid output rate is greater than a preset safety rate, the blood purification device is controlled to issue a liquid output failure alarm signal of the intravenous kettle.

4. The blood purification device according to claim 1, characterized in that: After triggering the liquid level increase button in the activated state, the liquid level control method of the blood purification device further includes: displaying the triggered liquid level increase button in a graphically enlarged form on the display screen, and setting the liquid level decrease button to a disabled state; Alternatively, after triggering the liquid level lowering button in the activated state, the liquid level control method of the blood purification equipment further includes: displaying the triggered liquid level lowering button in a graphically enlarged form on the display screen, and setting the liquid level raising button to a disabled state.

5. The blood purification device according to any one of claims 1 to 4, characterized in that: The liquid level control method of the blood purification device further includes: Determining whether the real-time liquid level of the liquid in the intravenous bottle is within a preset liquid level range; If yes, the liquid level increase button and the liquid level decrease button displayed on the display screen are controlled to be set to an activated state; If not, controlling the liquid level increase button and the liquid level decrease button displayed on the display screen to be set to a disabled state, and controlling the blood purification device to send an alarm signal; When it is determined that the real-time liquid level of the liquid in the intravenous bottle exceeds the preset liquid level range, the liquid level control method of the blood purification device further includes: detecting the pressure of the gas in the intravenous bottle to obtain a pressure detection value; Determining whether the pressure detection value is greater than a preset pressure safety value; If yes, controlling the blood purification device to send an overpressure fault signal of the venous kettle; If not, the amount of bubbles in the liquid in the venous line of the blood purification device is detected to obtain the venous line bubble amount, and when it is determined that the venous line bubble amount is greater than the preset bubble amount, the blood purification device is controlled to send a bubble fault signal of the venous line.

6. The blood purification device according to claim 5, characterized in that: After triggering the activated liquid level increasing button, the liquid level control method of the blood purification device further includes: detecting a rate of increase in the liquid level of the liquid in the intravenous bottle; When it is determined that the liquid level rising rate is greater than a preset maximum rate, the blood purification device is controlled to send an alarm signal; The preset maximum rate value is inversely proportional to the detected temperature.

7. The blood purification device according to claim 6, characterized in that: The liquid level control method of the blood purification device further includes: Detect the diameter of the arterial line of the blood purification device to obtain the diameter of the arterial line According to the diameter of the arterial line performing a calibration operation on the preset maximum rate value to obtain the calibrated preset maximum rate value; Among them, when the judgment satisfies When the preset maximum rate value is reduced, a calibration operation is performed to obtain the preset maximum rate value after calibration; When the judgment is satisfied When the preset maximum rate value is maintained, a calibration operation is performed to obtain the preset maximum rate value after calibration; When the judgment is satisfied When the preset maximum rate value is increased, a calibration operation is performed to obtain the preset maximum rate value after calibration.

8. The blood purification device according to claim 5, characterized in that: When it is determined that the real-time liquid level of the liquid in the intravenous bottle is within the preset liquid level range, the liquid level control method of the blood purification device further includes: detecting the weight of the intravenous pot, and controlling the display screen to display a first variation curve of the weight of the intravenous pot varying with time; And / or, controlling the display screen to display a second variation curve showing the real-time liquid level of the liquid in the intravenous bottle changing with time.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, each step of the liquid level control method of the blood purification device described in any one of claims 1 to 8 is implemented.

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