Temperature control method, device, control equipment and storage medium for catheter pump

By real-time monitoring of the temperature difference of the catheter pump and automatically adjusting the operating status, the problem of temperature increase of the catheter pump caused by accidental factors is solved, and safety and work efficiency are improved.

CN116672596BActive Publication Date: 2025-09-12MINIMALLY INVASIVE SURGERY MEDICAL TECH (SHANGHAI) CO LTD
View PDF 2 Cites 0 Cited by

Patent Information

Application Number
CN202210170101.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-02-23
Publication Date
2025-09-12
Estimated Expiration
2042-02-23

AI Technical Summary

Technical Problem

Conventional catheter pumps can overheat under accidental circumstances, resulting in low efficiency and potential damage to the heart and blood vessels.

Method used

By obtaining the ambient temperature and pump body temperature of the catheter pump and calculating the temperature difference, it is automatically determined whether the temperature is abnormal. In the event of an abnormality, the temperature protection control is activated, the gear is reduced, or the system is restarted to restore the normal state.

Benefits of technology

The safety and adaptability of the catheter pump are improved, the temperature rise caused by accidental factors is avoided, and the working efficiency is guaranteed.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN116672596B_ABST
    Figure CN116672596B_ABST
Patent Text Reader

Abstract

The present application relates to a temperature control method, device, control equipment, catheter pump system, and storage medium for a catheter pump. The method includes: when the catheter pump is not in operation, obtaining a first temperature value; the first temperature value is the temperature of the environment in which the catheter pump is located; when the catheter pump is in operation, obtaining a second temperature value, and determining whether the catheter pump is in an abnormal temperature state based on a first target temperature difference; wherein the second temperature value is the pump body temperature of the catheter pump; the first target temperature difference is the difference between the first temperature value and the second temperature value; when the catheter pump is in an abnormal temperature state, initiating temperature protection control on the catheter pump to restore the catheter pump to a normal temperature state. This method can avoid the increase in the catheter pump body temperature caused by accidental factors, improve the safety and adaptability of the catheter pump, and ensure the working efficiency of the catheter pump.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a temperature control method, device, control equipment, catheter pump system and storage medium for a catheter pump. Background Art

[0002] Currently, the primary strategy for percutaneous interventional treatment of heart disease involves implanting a catheter pump in the left ventricle to assist the heart in pumping blood. This catheter pump primarily consists of an inlet solenoid, paddles, an outlet tube, and a motor. A controller controls the operation of the catheter pump. The inlet port of the catheter pump should be located in the left ventricle, and the outlet port in the aorta. This pump pumps blood from the left ventricle into the aorta, assisting the heart in pumping blood. However, this traditional approach cannot avoid the risk of accidental increases in the catheter pump's temperature, leading to low pump efficiency and even damage to the heart and blood vessels. Summary of the Invention

[0003] Based on this, it is necessary to provide a temperature control method, device, control equipment, catheter pump system and storage medium for a catheter pump that can avoid the increase in the temperature of the catheter pump body due to accidental factors in order to solve the above technical problems.

[0004] In one embodiment, a method for controlling the temperature of a catheter pump is provided, the method comprising:

[0005] When the catheter pump is not in operation, obtaining a first temperature value; the first temperature value is the temperature of the environment in which the catheter pump is located;

[0006] When the catheter pump is in operation, a second temperature value is obtained, and whether the catheter pump is in an abnormal temperature state is determined based on the first target temperature difference; wherein the second temperature value is the pump body temperature of the catheter pump; and the first target temperature difference is the difference between the first temperature value and the second temperature value;

[0007] When the catheter pump is in an abnormal temperature state, temperature protection control is started on the catheter pump to keep the catheter pump in a normal temperature state.

[0008] In one embodiment, when the catheter pump is in an operating state, the steps of obtaining a second temperature value of an environment in which the catheter pump is located, and determining whether the catheter pump is in an abnormal temperature state based on a first target temperature difference include: when the catheter pump is in an operating state, obtaining an operating gear of the catheter pump and the second temperature value of the catheter pump at the operating gear; and determining whether the catheter pump is in an abnormal temperature state based on the first target temperature difference and a first temperature difference threshold corresponding to the operating gear.

[0009] In one embodiment, when the catheter pump is in an abnormal temperature state, the step of initiating temperature protection control on the catheter pump includes: when the catheter pump is in the abnormal temperature state and the operating gear is not the lowest operating gear, reducing the gear of the catheter pump to a current gear lower than the operating gear; obtaining a second temperature value of the catheter pump at the current gear, and when it is determined that the catheter pump is in an abnormal temperature state based on a first target temperature difference value and a first temperature difference threshold corresponding to the current gear, reducing the gear to operate until it is determined that the catheter pump returns to a normal temperature state or the current gear after the reduction is the lowest operating gear.

[0010] In one embodiment, before the step of lowering the gear of the catheter pump to a current gear lower than the operating gear, the step also includes recording the operating gear as a temperature abnormality gear; when the catheter pump is in a temperature abnormality state, the step of starting temperature protection control on the catheter pump also includes: when it is determined that the catheter pump has recovered to a normal temperature state, adjusting the catheter pump from the current gear to the temperature abnormality gear for operation, and determining whether the catheter pump is in a temperature abnormality state at the temperature abnormality gear.

[0011] In one embodiment, when the catheter pump is adjusted from the current gear to the temperature abnormality gear, the number of adjustments is recorded; when the catheter pump is in the temperature abnormality state, the step of starting temperature protection control on the catheter pump also includes: when it is determined that the catheter pump has returned to the normal temperature state and the number of adjustments is less than or equal to the gear adjustment number threshold, controlling the catheter pump to maintain operation in the temperature abnormality gear.

[0012] In one embodiment, when the catheter pump is adjusted from the current gear to the temperature abnormality gear, the number of adjustments is recorded; when the catheter pump is in the temperature abnormality state, the step of starting temperature protection control of the catheter pump also includes: when it is determined that the catheter pump has returned to the normal temperature state and the number of adjustments is greater than the gear adjustment number threshold, a first alarm signal is generated; the first alarm signal is used to prompt that the catheter pump has a temperature abnormality in the temperature abnormality gear.

[0013] In one embodiment, before the step of lowering the gear of the catheter pump to a current gear lower than the operating gear, the step also includes recording the operating gear as a temperature abnormality gear; when the catheter pump is in a temperature abnormality state, the step of starting temperature protection control on the catheter pump also includes: when the current gear after the reduction is the lowest operating gear, obtaining a first temperature value of the environment in which the catheter pump is located; restarting the catheter pump in the temperature abnormality gear, obtaining a second temperature value, and determining whether the catheter pump is in a temperature abnormality state based on the first target temperature difference; when it is determined that the catheter pump is in a temperature normal state, generating a second alarm signal, the second alarm signal being used to prompt that the environment in which the catheter pump is located is abnormal.

[0014] In one embodiment, the temperature control method further includes: when the catheter pump is restarted, recording the number of restarts of the catheter pump; when the number of restarts is less than or equal to a restart number threshold, entering the step of lowering the gear of the catheter pump to a current gear lower than the current operating gear when the catheter pump is in an abnormal temperature state and the operating gear is not the lowest operating gear.

[0015] In one embodiment, the temperature control method further includes: generating a third alarm signal when the restart number is greater than a restart number threshold, the third alarm signal being used to indicate that the catheter pump has failed to restart.

[0016] In one embodiment, the step of determining whether the catheter pump is in an abnormal temperature state according to the first target temperature difference includes: if the first target temperature difference is greater than a first temperature difference threshold, determining that the catheter pump is in an abnormal temperature state.

[0017] In one embodiment, the first temperature difference threshold is a first preset threshold or a first preset multiple of a preset safety temperature difference.

[0018] In one embodiment, the step of determining whether the catheter pump is in an abnormal temperature state according to the first target temperature difference further includes: if the first target temperature difference is less than or equal to a first temperature difference threshold, determining that the catheter pump is in a normal temperature state.

[0019] In one embodiment, the step of determining whether the catheter pump is in a temperature abnormality state based on a first target temperature difference includes: if a first target ratio is greater than a first ratio threshold, determining that the catheter pump is in a temperature abnormality state; wherein the first target ratio is the quotient of the second target temperature difference and a preset safety temperature difference; and the second target temperature difference is the difference between the first target temperature difference and the preset safety temperature difference.

[0020] In one embodiment, a temperature control device for a catheter pump is provided, the device comprising:

[0021] The data acquisition module is configured to acquire a first temperature value when the catheter pump is not in operation; the first temperature value is the temperature of the environment in which the catheter pump is located; and the data acquisition module is further configured to acquire a second temperature value when the catheter pump is in operation; wherein the second temperature value is the pump body temperature of the catheter pump;

[0022] a temperature determination module, configured to determine whether the catheter pump is in an abnormal temperature state based on a first target temperature difference, wherein the first target temperature difference is the difference between the first temperature value and the second temperature value;

[0023] The temperature protection module is used to start temperature protection control on the catheter pump when the catheter pump is in an abnormal temperature state, so as to keep the catheter pump in a normal temperature state.

[0024] In one embodiment, a control device is provided. The control device includes a memory and a processor. The memory stores a computer program. When the processor executes the computer program, the steps of any method in the above method embodiments are implemented.

[0025] In one embodiment, a catheter pump system is provided, which includes a catheter pump, a temperature sensor, and any control device in the above-mentioned control device embodiments; the catheter pump is electrically connected to the control device; the temperature sensor is arranged in the motor of the catheter pump or the casing of the catheter pump, and is electrically connected to the control device.

[0026] In one embodiment, the catheter pump system further includes a display screen; the display screen is electrically connected to the control device.

[0027] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of any method in the above method embodiments are implemented.

[0028] The above-described catheter pump temperature control method, apparatus, control device, catheter pump system, and storage medium are configured to obtain the temperature of the environment surrounding the catheter pump, i.e., a first temperature value, when the catheter pump is not in operation. Simultaneously, when the catheter pump is in operation, the pump body temperature, i.e., a second temperature value, is obtained. Furthermore, based on the difference between the first temperature value and the second temperature value, i.e., a first target temperature difference, it is automatically determined whether the catheter pump is in an abnormal temperature state. For example, if the pump body is accidentally damaged or the inlet is blocked during implantation, causing abnormal operation of the pump body, the pump body temperature may rise. Therefore, the degree of temperature rise can be used to determine whether the catheter pump is abnormal. Then, if the catheter pump is in an abnormal temperature state, temperature protection control is activated on the catheter pump to restore the catheter pump to a normal temperature state. This prevents temperature increases in the catheter pump body caused by accidental factors, improves the safety and adaptability of the catheter pump, and ensures its operating efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A first flow chart of a temperature control method for a catheter pump according to an embodiment;

[0030] Figure 2 A second flow chart of a temperature control method for a catheter pump according to an embodiment;

[0031] Figure 3 A third flow chart of a temperature control method for a catheter pump according to an embodiment;

[0032] Figure 4is a fourth flow chart of a temperature control method for a catheter pump in one embodiment;

[0033] Figure 5 is a fifth flow chart of a temperature control method for a catheter pump in one embodiment;

[0034] Figure 6 is a sixth flow chart of a temperature control method for a catheter pump in one embodiment;

[0035] Figure 7 is a seventh flow chart of a temperature control method for a catheter pump in one embodiment;

[0036] Figure 8 is a structural block diagram of a device for determining the placement position of a catheter pump in one embodiment;

[0037] Figure 9 is a diagram showing the internal structure of a control device in one embodiment;

[0038] Figure 10 is a first structural schematic diagram of a catheter pump system in one embodiment;

[0039] Figure 11 FIG. 1 is a second structural schematic diagram of a catheter pump system in one embodiment. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application pertains. The terms used herein in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application.

[0042] It will be understood that the terms "first," "second," etc., used herein may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor without departing from the scope of this application. The first resistor and the second resistor are both resistors, but they are not the same resistor.

[0043] It can be understood that the “connection” in the following embodiments should be understood as “electrical connection”, “communication connection”, etc. if there is transmission of electrical signals or data between the connected circuits, modules, units, etc.

[0044] When used herein, the singular forms "a", "an", and "the" may also include the plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" and the like specify the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the possibility of the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

[0045] Embodiments of the present application provide a temperature control method, apparatus, control device, catheter pump system, and storage medium for a catheter pump, which can automatically determine whether the catheter pump is in an abnormal temperature state. For example, during the implantation process, if the pump body is accidentally damaged or the inlet is blocked, causing the pump body to operate abnormally, the pump body temperature will increase. Therefore, whether the catheter pump is abnormal can be determined by the degree of temperature rise, and the increase in the catheter pump body temperature caused by accidental factors can be avoided, thereby improving the safety and adaptability of the catheter pump and ensuring the working efficiency of the catheter pump.

[0046] In one embodiment, Figure 1 As shown, a temperature control method for a catheter pump is provided. This embodiment uses the method applied to a control device as an example for illustration. In this embodiment, the method includes steps 102 to 104.

[0047] Step 102: Acquire a first temperature value when the catheter pump is not in operation.

[0048] Among them, the catheter pump mainly includes an inlet solenoid, a paddle, an outlet pipe and a motor. The controller can control the operation of the catheter pump to assist the heart in pumping blood. The accurate placement of the catheter pump is: the catheter pump inlet window should be located in the left ventricle, and the outlet window should be located in the aorta, by pumping blood from the left ventricle to the aorta. The environment in which the catheter pump is located includes the environment corresponding to the implantation inside the human body and the test simulation environment. Among them, the first temperature value refers to the temperature of the environment in which the catheter pump is located. When the catheter pump is not in operation, the control device obtains the temperature of the environment in which the catheter pump is located, that is, the first temperature value, and can also understand the pump body temperature when the catheter pump is not in operation, that is, the basal body temperature of the human body through the first temperature value.

[0049] In a specific example, when the catheter pump is not in operation, the control device can obtain a first temperature value of the environment in which the catheter pump is located through a temperature sensor arranged in the motor of the catheter pump or on the casing of the catheter pump. The above is only a specific example. In actual application, it can be flexibly set according to needs and is not limited here.

[0050] Step 104 : When the catheter pump is in operation, obtain a second temperature value, and determine whether the catheter pump is in an abnormal temperature state according to the first target temperature difference.

[0051] The second temperature value is the pump body temperature of the catheter pump, and the first target temperature difference is the difference between the first and second temperature values. When the catheter pump is in operation, the control device obtains the second temperature value to determine the corresponding pump body temperature of the catheter pump when operating within the human body. This pump body temperature is typically obtained by collecting the temperature of the catheter pump motor. The first target temperature difference is calculated using the obtained second temperature value and the first temperature value, thereby determining whether the catheter pump is in an abnormal temperature state based on the first target temperature difference.

[0052] In a specific example, when the catheter pump is in operation, the control device can obtain the second temperature value through a temperature sensor arranged in the motor of the catheter pump or on the casing of the catheter pump. The above is only a specific example. In actual application, it can be flexibly set according to needs and is not limited here.

[0053] In one embodiment, Figure 2 As shown, the step of determining whether the catheter pump is in an abnormal temperature state according to the first target temperature difference includes steps 201 and 202 .

[0054] Step 201: If the first target temperature difference is greater than a first temperature difference threshold, it is determined that the catheter pump is in an abnormal temperature state.

[0055] Step 202: If the first target temperature difference is less than or equal to the first temperature difference threshold, it is determined that the catheter pump is in a normal temperature state.

[0056] The control device may determine that the catheter pump is in an abnormal temperature state when the first target temperature difference is greater than a first temperature difference threshold; and at the same time, determine that the catheter pump is in a normal temperature state when the first target temperature difference is less than or equal to the first temperature difference threshold.

[0057] In this embodiment, the above steps can accurately identify whether the catheter pump is in an abnormal temperature state, so as to avoid the temperature increase of the catheter pump due to damage to the catheter pump or blockage of the inlet, thereby quickly determining the abnormality of the catheter pump, and thus providing information prompts to the doctor to determine whether to replace the pump body.

[0058] In one embodiment, the first temperature difference threshold is a first preset threshold or a first preset multiple of a preset safety temperature difference.

[0059] In a specific example, laboratory measurement data from a catheter pump can reveal a preset safety temperature difference of 0.7°C, a first preset threshold of 2.10°C, and a first preset multiple of 3. In other words, during the temperature control process of the catheter pump, the first preset threshold of 2.10°C obtained from the measurement data can be directly used as the first temperature difference threshold. Alternatively, the first temperature difference threshold can be calculated using the preset safety temperature difference and the first preset multiple, and the second temperature difference threshold can be calculated using the preset safety temperature difference and the second preset multiple. The calculated first temperature difference threshold is 2.10°C, which is three times 0.7°C. It is understood that if the first target temperature difference is greater than 2.10°C, the catheter pump is determined to be in an abnormal temperature state. Conversely, if the first target temperature difference is less than or equal to 2.10°C, the catheter pump is determined to be in a normal temperature state. The above is merely a specific example; in actual applications, the settings can be flexible based on needs and are not intended to be limiting.

[0060] In a specific example, based on the measurement data of the catheter pump in the laboratory, a preset safety temperature difference value for the catheter pump at different operating gears can be established. The above-mentioned measurement data includes the motor current, motor speed, pump flow rate, pump outlet pressure, pump inlet pressure and pump casing temperature of the catheter pump. The preset safety temperature difference value refers to the difference between the temperature value of the catheter pump when it is in the corresponding operating gear and in the standard operating state and the temperature value of the catheter pump when it is in the corresponding operating gear and in the non-operating state; that is, when the first target temperature difference value is equivalent to the above-mentioned preset safety temperature difference value, the catheter pump is in the standard operating state. At this time, the output of the catheter pump is stable and the performance can meet the design expectations. In addition, the preset safety temperature difference values ​​corresponding to different operating gears can be stored in the control device in the form of a data table for real-time call during use. The above is only a specific example. In actual application, it can be flexibly set according to needs and is not limited here.

[0061] In one specific example, when the catheter pump is operating, each gear position corresponds to a different preset safety temperature difference. The specific temperature rise at each gear position also varies depending on the operating state. However, experimental testing shows that, for example, when the catheter pump is operating in gear 4, the preset safety temperature difference, based on measurement data, is approximately 0.7°C and no higher than 0.91°C. When the catheter pump experiences a temperature anomaly, the temperature difference exceeds 2.10°C. When the catheter pump is operating in gear 5, the preset safety temperature difference is approximately 0.8°C and no higher than 1.04°C. When the catheter pump experiences a temperature anomaly, the temperature difference exceeds 2.40°C. All of these values ​​can be stored in the control device. This means that when the catheter pump is operating in gear 4, the first temperature difference threshold is 2.10°C; or when the catheter pump is operating in gear 5, the first temperature difference threshold is 2.40°C. In other words, during operation, by reading and comparing these data according to the operating gear position, it is possible to determine whether the catheter pump is experiencing a temperature anomaly. The above are only specific examples. In actual applications, they can be flexibly configured according to needs and are not limited here.

[0062] In one embodiment, the step of determining whether the catheter pump is in an abnormal temperature state according to the first target temperature difference includes: if the first target ratio is greater than a first ratio threshold, determining that the catheter pump is in an abnormal temperature state.

[0063] The first target ratio refers to the quotient of the second target temperature difference and the preset safety temperature difference; the second target temperature difference refers to the difference between the first target temperature difference and the preset safety temperature difference. The control device may pre-store the remote safety temperature difference and the first ratio threshold. Upon acquiring the first and second temperature values, the control device may calculate the difference between the first and second temperature values ​​to obtain the first target temperature difference, calculate the difference between the first target temperature difference and the preset safety temperature difference to obtain the second target temperature difference, and calculate the first target ratio using the quotient of the second target temperature difference and the preset safety temperature difference. If the first target ratio is greater than the first ratio threshold and less than the second ratio threshold, the catheter pump is determined to be in an abnormal temperature state. Conversely, if the first target ratio is less than or equal to the first ratio threshold, the catheter pump is determined to be in a normal temperature state.

[0064] In this embodiment, the above steps can accurately identify whether the catheter pump is in an abnormal temperature state, thereby avoiding an increase in the temperature of the catheter pump due to damage to the catheter pump or blockage of the inlet.

[0065] In one specific example, when the catheter pump is operating, each gear position corresponds to a different preset safety temperature difference. Furthermore, the specific temperature increase of each gear position also varies under different conditions. However, experimental testing has shown that the percentage of the specific temperature increase of each gear position to the predicted safety temperature difference for that gear position is generally constant, so a percentage can also be used as a judgment criterion. In the above embodiment, the first proportional threshold is specifically a percentage value.

[0066] Taking the catheter pump running in the fourth gear as an example, when the temperature of the catheter pump body is abnormal, the temperature difference is higher than 2.10℃, which is 200% higher than the preset safety temperature difference of 0.7℃ for this gear. The specific judgment steps of this specific example are as follows: when the first temperature value and the second temperature value are obtained, a first target temperature difference is obtained by calculating the difference between the first temperature value and the second temperature value, a second target temperature difference is obtained by calculating the difference between the first target temperature difference and a preset safety temperature difference of 0.7°C, and a first target ratio is obtained by calculating the quotient of the second target temperature difference and the preset safety temperature difference of 0.7°C. When the first target ratio is greater than a first ratio threshold of 200%, it is determined that the catheter pump is in an abnormal temperature state.

[0067] It is understood that the first ratio threshold, the second ratio threshold, and the third ratio threshold can be pre-obtained through laboratory measurement data and can be pre-stored in the control device. That is, when the first target ratio is greater than the first ratio threshold, i.e., 200%, the control device issues a temperature anomaly alarm and activates the temperature protection control function. If, during the implantation process, the pump body is accidentally damaged or the inlet is blocked, causing the pump body to operate abnormally, the designed temperature rise of the pump body cannot be effectively guaranteed. The above are only specific examples. In actual applications, they can be flexibly set according to needs and are not limited here.

[0068] Step 106 : When the catheter pump is in an abnormal temperature state, start temperature protection control on the catheter pump to keep the catheter pump in a normal temperature state.

[0069] When the catheter pump is in an abnormal temperature state, the control device can start temperature protection control on the catheter pump, thereby keeping the catheter pump in a normal temperature state.

[0070] Based on this, when a catheter pump is implanted in a human body, the temperature of the environment in which the catheter pump is located, i.e., a first temperature value, is obtained when the catheter pump is not in operation. At the same time, when the catheter pump is in operation, the temperature of the pump body of the catheter pump, i.e., a second temperature value, is obtained. Moreover, based on the difference between the first temperature value and the second temperature value, i.e., a first target temperature difference, it is automatically determined whether the catheter pump is in an abnormal temperature state. Then, when the catheter pump is in an abnormal temperature state, temperature protection control is activated on the catheter pump to keep the catheter pump in a normal temperature state, thereby avoiding an increase in the temperature of the catheter pump body due to accidental factors, improving the safety and adaptability of the catheter pump, and ensuring the working efficiency of the catheter pump.

[0071] In one embodiment, Figure 3 As shown, when the catheter pump is in operation, the steps of obtaining a second temperature value of the catheter pump and determining whether the catheter pump is in an abnormal temperature state according to the first target temperature difference include step 301 and step 302 .

[0072] Step 301 : When the catheter pump is in operation, obtain the operation gear of the catheter pump and a second temperature value of the catheter pump in the operation gear.

[0073] Step 302 : Determine whether the catheter pump is in an abnormal temperature state based on the first target temperature difference and a first temperature difference threshold corresponding to the operating gear.

[0074] Because the catheter pump experiences varying heat dissipation environments at different operating levels due to varying blood flow rates, the control device can determine the operating level and the second temperature of the catheter pump at that level while the catheter pump is operating. Simultaneously, based on the first target temperature difference and the first temperature difference threshold corresponding to the operating level, the control device can automatically determine whether the catheter pump is experiencing an abnormal temperature state, thereby improving the accuracy of the catheter pump's temperature control.

[0075] In one embodiment, Figure 4 As shown, when the catheter pump is in an abnormal temperature state, the step of starting temperature protection control on the catheter pump includes step 401 and step 402.

[0076] Step 401 : When the catheter pump is in an abnormal temperature state and the operating gear is not the lowest operating gear, the catheter pump is operated at a gear lower than the current operating gear.

[0077] The lowest operating gear refers to the lowest value of the catheter pump's operating gears. In a specific example, the lowest operating gear can be, but is not limited to, 0, where the motor stops. The above is merely an example; in actual applications, this setting can be flexibly adjusted based on actual needs and is not intended to be limiting.

[0078] The control device can determine whether the catheter pump is in an abnormal temperature state based on the first target temperature difference and a first temperature difference threshold corresponding to the operating gear. If the catheter pump is in an abnormal temperature state and the operating gear is not the lowest operating gear, the control device can cause the catheter pump to operate at a lower gear, i.e., to a current gear lower than the aforementioned operating gear. It is understood that the lowered gear operation may specifically include operating at a lower gear by one, two, or three gears, and can be flexibly set based on actual needs in practice and is not limited herein.

[0079] Step 402: Obtain a second temperature value of the catheter pump at the current gear position. If the catheter pump is determined to be in an abnormal temperature state based on the first target temperature difference value and the first temperature difference threshold value corresponding to the current gear position, reduce the gear position until it is determined that the catheter pump has returned to a normal temperature state or the current gear position after the reduction is the lowest operating gear position.

[0080] The control device obtains a second temperature value after the last gear-down operation, that is, promptly obtains the current gear of the catheter pump and the current pump body temperature after the last gear-down operation; then, calculates the difference between the first temperature value and the current second temperature value to obtain the current first target temperature difference; at the same time, determines whether the catheter pump is in an abnormal temperature state based on the above-mentioned current first target temperature difference and the first temperature difference threshold corresponding to the current gear; and, if it is determined that the catheter pump is in an abnormal temperature state, the control device again causes the catheter pump to operate in a lower gear until the control device determines that the catheter pump has returned to a normal temperature state or the current gear after the gear downgrade is the lowest operating gear.

[0081] In this embodiment, through the above steps, when the catheter pump is in an abnormal temperature state and the operating gear is not the lowest operating gear, the catheter pump gear can be automatically lowered to operate so that the catheter pump can operate in a normal temperature state or directly lowered to the lowest operating gear to stop the catheter pump motor, thereby improving the convenience of the temperature control method of the catheter pump.

[0082] In one embodiment, Figure 5 As shown, before the step of lowering the gear of the catheter pump to a current gear lower than the operating gear, the step also includes recording the operating gear as a temperature abnormality gear; when the catheter pump is in a temperature abnormality state, the step of starting temperature protection control for the catheter pump also includes: step 403.

[0083] Step 403 , when it is determined that the catheter pump has recovered to a normal temperature state, the catheter pump is adjusted from the current gear to an abnormal temperature gear, and it is determined whether the catheter pump is in an abnormal temperature state at the abnormal temperature gear.

[0084] The control device may record the current gear position of the catheter pump as a temperature abnormality gear position before each execution of a lowered gear position. When the control device determines that the catheter pump has returned to a normal temperature state, that is, when the catheter pump has changed from a temperature abnormality state to a normal temperature state, the control device may return the catheter pump to the recorded temperature abnormality gear position and determine whether the catheter pump was in a temperature abnormality state at the temperature abnormality gear position.

[0085] In this embodiment, the above steps can enable the catheter pump to promptly resume operation at the recorded abnormal temperature gear when the abnormal temperature state changes to the normal temperature state, thereby improving the convenience of the temperature control method for the catheter pump.

[0086] In one embodiment, when the catheter pump is in an abnormal temperature state, a temperature anomaly alarm is issued to alert personnel that the catheter pump is currently in an abnormal temperature state. Furthermore, when the operating gear of the catheter pump is adjusted to the temperature abnormality gear, the temperature anomaly alarm is eliminated, thereby improving the convenience of the catheter pump temperature control method.

[0087] In one embodiment, Figure 6 As shown, when the catheter pump is adjusted from the current gear to the temperature abnormality gear, the adjustment times are recorded; when the catheter pump is in the temperature abnormality state, the step of starting temperature protection control for the catheter pump also includes steps 601 to 602.

[0088] Step 601: If it is determined that the catheter pump has returned to a normal temperature state and the number of adjustments is less than or equal to a gear adjustment number threshold, the catheter pump is controlled to operate at the temperature abnormality gear, where the temperature abnormality gear is regarded as a normal gear.

[0089] Step 602: If it is determined that the catheter pump has returned to a normal temperature state and the number of adjustments is greater than the gear shift back number threshold, a first alarm signal is generated. The first alarm signal is used to indicate that the catheter pump has a temperature abnormality in the temperature abnormality gear.

[0090] Among them, after the catheter pump is downshifted, it is determined through testing that the catheter pump temperature is normal. The control device then adjusts the gear to the previously recorded temperature abnormality gear. During operation in the temperature abnormality gear, it is again determined whether the temperature is abnormal. If there is no abnormality, the control device can display "Temperature Normal" and make the catheter pump run in the temperature abnormality gear, eliminating the alarm. If the temperature abnormality reappears after the control device is adjusted back to the temperature abnormality gear, the control device will still downgrade the gear and obtain a second temperature value to determine whether the temperature is normal. After repeating twice (i.e., the above-mentioned gear adjustment number threshold is 2), it still cannot return to normal in the temperature abnormality gear. Then, the control catheter pump is controlled to run in the gear with normal temperature after downgrading the gear operation, and a first alarm signal is issued. The first alarm signal can prompt "Temperature abnormality in gear X, currently running in gear X-1". In addition, the gear adjustment number threshold can be flexibly set according to needs in actual application and is not restricted here.

[0091] In one embodiment, Figure 7 As shown, the step of lowering the gear of the catheter pump to a current gear lower than the operating gear also includes recording the operating gear as a temperature abnormality gear.

[0092] When the catheter pump is in an abnormal temperature state, the step of starting temperature protection control on the catheter pump further includes: steps 404 to 406 .

[0093] Step 404 : When the current gear position after the reduction is the lowest operating gear position, a first temperature value of the environment in which the catheter pump is located is obtained.

[0094] Before each operation of reducing the catheter pump gear, the control device records the current operating gear of the catheter pump as a temperature abnormality gear. If the reduced operating gear is the lowest operating gear, the control device will again obtain the temperature of the environment in which the catheter pump was located when the catheter pump was not operating, that is, the first temperature value, thereby obtaining the updated human basal body temperature value. Simultaneously, the control device will restart the catheter pump based on the recorded temperature abnormality gear.

[0095] In one embodiment, when the lowered operating gear is the lowest operating gear, the catheter pump restarts according to a preset waiting time, that is, after the motor stops, the restart countdown is started. After the countdown ends, the current pump body shell temperature, that is, the first temperature value, is tested, the patient's basal body temperature is updated, and the catheter pump is automatically restarted according to the recorded temperature abnormality gear, thereby improving the accuracy of the obtained first temperature value.

[0096] Step 405 , restarting the catheter pump in the temperature abnormality gear, obtaining a second temperature value, and determining whether the catheter pump is in a temperature abnormality state based on the first target temperature difference; as in steps 301 and 302 above.

[0097] Step 406 : When it is determined that the temperature of the catheter pump is normal, a second alarm signal is generated. The second alarm signal is used to indicate that the environment of the catheter pump is abnormal.

[0098] The control device restarts the catheter pump in the temperature abnormality position; then, it obtains a second temperature value and, based on the first target temperature difference, determines whether the catheter pump is in a temperature abnormality state. If the catheter pump temperature returns to normal, the control device outputs a second alarm signal, indicating an elevated patient temperature, and controls normal operation of the catheter pump. If the catheter pump temperature remains abnormal, the temperature protection function is activated again. This embodiment allows for timely monitoring of the ambient temperature of the catheter pump, i.e., the basal body temperature of the human body, thereby enhancing the convenience of the catheter pump temperature control method.

[0099] In one embodiment, the temperature control method further comprises:

[0100] When the catheter pump is restarted according to the temperature abnormality gear, the restart count of the catheter pump is recorded; when the restart count is less than or equal to the restart count threshold, the process proceeds to the step of lowering the gear when the catheter pump is in the temperature abnormality state and the operating gear is not the lowest operating gear, such as the above step 401.

[0101] In this embodiment, through the above steps, after the control device restarts the catheter pump, and when the number of restarts of the catheter pump is less than or equal to the restart number threshold, the control device decides whether to further lower the operating gear of the catheter pump by again determining whether the catheter pump is in an abnormal temperature state or the operating gear of the catheter pump is not the lowest operating gear, and thus decides whether to start the temperature protection control of the catheter pump again, thereby improving the convenience of the temperature control method of the catheter pump.

[0102] In one embodiment, the temperature control method further includes: generating a third alarm signal when the restart number is greater than a restart number threshold, the third alarm signal being used to indicate that the catheter pump has failed to restart.

[0103] If the catheter pump restart count exceeds the corresponding restart threshold, the control device will promptly generate a third alarm signal, notifying the operator of the catheter pump restart failure. The operator will then determine whether to restart the catheter pump again, check for blockage at the pump inlet, and determine whether the catheter pump needs to be replaced. This improves the convenience of the catheter pump temperature control method.

[0104] It should be understood that although Figure 1-7The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. In addition, Figure 1-7 At least part of the steps may include multiple steps or multiple stages. These steps or stages are not necessarily performed at the same time, but can be performed at different times. The order of execution of these steps or stages is not necessarily one by one, but can be performed in turn or alternately with other steps or at least part of the steps or stages in other steps.

[0105] In one embodiment, Figure 8 As shown, a temperature control device for a catheter pump is provided, comprising: a data acquisition module 810, a temperature determination module 820 and a temperature protection module 830, wherein:

[0106] The data acquisition module 810 is configured to acquire a first temperature value when the catheter pump is not in operation; the first temperature value is the temperature of the environment in which the catheter pump is located; and to acquire a second temperature value when the catheter pump is in operation; the second temperature value is the pump body temperature of the catheter pump;

[0107] a temperature determination module 820 for determining whether the catheter pump is in an abnormal temperature state according to a first target temperature difference, wherein the first target temperature difference refers to a difference between a first temperature value and a second temperature value;

[0108] The temperature protection module 830 is used to start temperature protection control on the catheter pump when the catheter pump is in an abnormal temperature state, so as to keep the catheter pump in a normal temperature state.

[0109] In one embodiment, the temperature determination module 820 includes a first temperature determination unit configured to determine whether the catheter pump is in an abnormal temperature state based on a first target temperature difference and a first temperature difference threshold corresponding to an operating gear.

[0110] In one embodiment, the temperature protection module 830 includes a first temperature protection unit. The first temperature protection unit is configured to reduce the operating gear of the catheter pump when the catheter pump is in an abnormal temperature state and the operating gear is not the lowest operating gear; obtain a second temperature value of the catheter pump after the last operation at the reduced gear; and, if the catheter pump is determined to be in an abnormal temperature state based on the first target temperature difference value and a first temperature difference threshold corresponding to the current gear, reduce the operating gear again until the catheter pump is determined to have returned to a normal temperature state or the reduced operating gear is the lowest operating gear.

[0111] In one embodiment, the first temperature protection unit is further configured to record the operating gear as a temperature abnormality gear before the step of reducing the gear. The temperature protection module 830 also includes a second temperature protection unit. If the second temperature protection unit determines that the catheter pump has returned to a normal temperature state, it adjusts the gear of the catheter pump to the temperature abnormality gear.

[0112] In one embodiment, the second temperature protection unit is further configured to record the number of adjustments made when the gear is adjusted to the temperature abnormality gear. The second temperature protection unit is further configured to maintain the catheter pump in the temperature abnormality gear if it is determined that the catheter pump has returned to a normal temperature state and the number of adjustments is less than or equal to a gear return threshold. In one embodiment, the second temperature protection unit is further configured to record the number of adjustments made when the catheter pump is adjusted from the current gear to the temperature abnormality gear. The second temperature protection unit is further configured to generate a first alarm signal if it is determined that the catheter pump has returned to a normal temperature state and the number of adjustments is greater than a gear return threshold. The first alarm signal indicates that the catheter pump has a temperature abnormality in the temperature abnormality gear. In one embodiment, the first temperature protection unit is further configured to record the operating gear as the temperature abnormality gear before lowering the gear of the catheter pump to a gear lower than the current operating gear. The temperature protection module 830 also includes a third temperature protection unit. The third temperature protection unit is used to obtain a first temperature value of the environment in which the catheter pump is located when the current gear after the reduction is the lowest operating gear; restart the catheter pump in the temperature abnormality gear to obtain a second temperature value, and determine whether the catheter pump is in a temperature abnormality state based on the first target temperature difference; and generate a second alarm signal when it is determined that the catheter pump is in a temperature normal state, and the second alarm signal is used to indicate that the environment in which the catheter pump is located is abnormal.

[0113] In one embodiment, the third temperature protection unit is further used to record the number of restarts of the catheter pump when the catheter pump is restarted according to the temperature abnormality gear; when the number of restarts is less than or equal to the restart number threshold, the step of lowering the gear of the catheter pump to a current gear lower than the operating gear when the catheter pump is in a temperature abnormality state and the operating gear is not the lowest operating gear is entered.

[0114] In one embodiment, the third temperature protection unit is further configured to generate a third alarm signal when the number of restarts is greater than a restart number threshold, and the third alarm signal is configured to indicate that the catheter pump has failed to restart.

[0115] In one embodiment, the temperature determination module 820 includes a second temperature determination unit, wherein the second temperature determination unit is configured to determine that the catheter pump is in an abnormal temperature state if the first target temperature difference is greater than a first temperature difference threshold.

[0116] In one embodiment, the first temperature difference threshold is a first preset threshold or a first preset multiple of a preset safety temperature difference.

[0117] In one embodiment, the second temperature determination unit is further configured to determine that the catheter pump is in a normal temperature state if the first target temperature difference is less than or equal to a first temperature difference threshold.

[0118] In one embodiment, the temperature determination module 820 includes a third temperature determination unit. The third temperature determination unit is configured to determine that the catheter pump is in an abnormal temperature state if a first target ratio is greater than a first ratio threshold. The first target ratio is the quotient of a second target temperature difference and a preset safety temperature difference. The second target temperature difference is the difference between the first target temperature difference and the preset safety temperature difference.

[0119] The first and third temperature judgment units are selectively provided. When the first temperature judgment unit is present, the second temperature judgment unit may be selectively provided. The specific definition of the temperature control device for the catheter pump can be found in the definition of the temperature control method for the catheter pump described above and will not be elaborated upon here. The various modules in the temperature control device for the catheter pump may be implemented in whole or in part through software, hardware, or a combination thereof. The various modules may be embedded in or independent of a processor in a computer device in hardware form, or may be stored in a memory in a computer device in software form, so that the processor can call and execute operations corresponding to the various modules.

[0120] In one embodiment, a control device 1030 is provided. The control device 1030 may be a terminal, and its internal structure diagram may be as follows: Figure 9 As shown. The control device 1030 includes a processor, a memory, a communication interface, a display screen and an input device connected via a system bus. The processor of the control device 1030 is used to provide computing and control capabilities. The memory of the control device 1030 includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The communication interface of the control device 1030 is used to communicate with an external terminal in a wired or wireless manner. The wireless manner can be achieved through WIFI, an operator network, NFC (near field communication) or other technologies. When the computer program is executed by the processor, a method for placing a catheter pump is implemented. The display screen of the control device 1030 can be a liquid crystal display screen or an electronic ink display screen. The input device of the control device 1030 can be a touch layer covering the display screen, or a button, trackball or touchpad provided on the housing of the control device 1030, or an external keyboard, touchpad or mouse.

[0121] Those skilled in the art will understand that Figure 9 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the control device 1030 to which the solution of the present application is applied. The specific control device 1030 may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0122] In one embodiment, a control device 1030 is provided. The control device 1030 includes a memory and a processor. The memory stores a computer program. When the processor executes the computer program, the steps of any method in the above method embodiments are implemented.

[0123] In one embodiment, Figure 10 As shown, a catheter pump system is provided, which includes a catheter pump 1010, a temperature sensor 1020 and any control device 1030 in the above control device embodiments; the catheter pump 1010 is electrically connected to the control device.

[0124] The temperature sensor 1020 is disposed in the motor of the catheter pump 1010 or in the housing of the catheter pump 1010 and is electrically connected to the control device 1030. In a specific example, Figure 11 As shown, temperature sensor 1020 can be a thermocouple, thermistor, resistance temperature detector (RTD), etc. The signal line of temperature sensor 1020 extends from the cable junction at the rear of the catheter pump 1010 motor to the motor surface. The probe is located at the front, middle, rear, and other locations on the motor surface of catheter pump 1010, or inside the motor of catheter pump 1010. The temperature acquisition frequency of temperature sensor 1020 is no less than 200 Hz. The above is only a specific example; in actual applications, it can be flexibly configured according to needs and is not limited here.

[0125] In this embodiment, the catheter pump system can start temperature protection control on the catheter pump to keep the catheter pump in a normal temperature state, thereby avoiding the increase in the temperature of the catheter pump body due to accidental factors, improving the safety and adaptability of the catheter pump, and ensuring the working efficiency of the catheter pump.

[0126] In one embodiment, Figure 10 As shown, the catheter pump system further includes a display screen 1040 ; the display screen 1040 is electrically connected to the control device 1030 and can be used to display the first temperature value and the second temperature value, and / or display the above-mentioned alarm signal. Therefore, the convenience of the catheter pump system is improved.

[0127] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of any method in the above method embodiments are implemented.

[0128] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiment methods can be implemented by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application may include at least one of non-volatile and volatile memory. Non-volatile memory may include read-only memory (ROM), magnetic tape, floppy disk, flash memory or optical memory, etc. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM).

[0129] The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0130] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art could make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A temperature control method for a catheter pump, characterized in that: The method comprises: When the catheter pump is not in operation, obtaining a first temperature value; the first temperature value is the temperature of the environment in which the catheter pump is located; When the catheter pump is in operation, a second temperature value is obtained, and whether the catheter pump is in an abnormal temperature state is determined according to a first target temperature difference; wherein the second temperature value is a pump body temperature of the catheter pump; and the first target temperature difference is a difference between the first temperature value and the second temperature value; When the catheter pump is in an abnormal temperature state, temperature protection control is started on the catheter pump to keep the catheter pump in a normal temperature state.

2. The temperature control method according to claim 1, characterized in that: When the catheter pump is in operation, the step of obtaining a second temperature value of an environment in which the catheter pump is located, and determining whether the catheter pump is in an abnormal temperature state according to a first target temperature difference includes: When the catheter pump is in an operating state, acquiring an operating gear of the catheter pump and the second temperature value of the catheter pump at the operating gear; Whether the catheter pump is in an abnormal temperature state is determined according to the first target temperature difference and a first temperature difference threshold corresponding to the operating gear.

3. The temperature control method according to claim 2, characterized in that: When the catheter pump is in an abnormal temperature state, the step of starting temperature protection control on the catheter pump includes: When the catheter pump is in an abnormal temperature state and the operating gear is not the lowest operating gear, the catheter pump is operated at a lower gear than the current operating gear; The second temperature value of the catheter pump at the current gear is obtained, and when it is determined that the catheter pump is in an abnormal temperature state based on the first target temperature difference value and a first temperature difference threshold corresponding to the current gear, the gear is reduced to operate until it is determined that the catheter pump returns to the normal temperature state or the current gear after the reduction is the lowest operating gear.

4. The temperature control method according to claim 3, characterized in that: Before the step of lowering the gear of the catheter pump to a current gear lower than the operating gear, the step further includes recording the operating gear as a temperature abnormality gear; when the catheter pump is in a temperature abnormality state, the step of initiating temperature protection control on the catheter pump further includes: when it is determined that the catheter pump has recovered to a normal temperature state, adjusting the catheter pump from the current gear to the temperature abnormality gear for operation, and determining whether the catheter pump is in a temperature abnormality state at the temperature abnormality gear.

5. The temperature control method according to claim 4, characterized in that: In the case of adjusting the catheter pump from the current gear to the temperature abnormality gear for operation, recording the number of adjustments; When the catheter pump is in an abnormal temperature state, the step of starting temperature protection control on the catheter pump further includes: When it is determined that the catheter pump has returned to a normal temperature state and the number of adjustments is less than or equal to a gear shift-back number threshold, the catheter pump is controlled to maintain operation at the temperature abnormality gear.

6. The temperature control method according to claim 4, characterized in that: In the case of adjusting the catheter pump from the current gear to the temperature abnormality gear for operation, recording the number of adjustments; When the catheter pump is in an abnormal temperature state, the step of starting temperature protection control on the catheter pump further includes: When it is determined that the catheter pump has returned to a normal temperature state and the number of adjustments is greater than a gear shift-back number threshold, a first alarm signal is generated; the first alarm signal is used to prompt that the catheter pump has a temperature abnormality in the temperature abnormality gear.

7. The temperature control method according to any one of claims 3 to 6, characterized in that: Before the step of lowering the gear of the catheter pump to a current gear lower than the operating gear, the step further includes recording the operating gear as a temperature abnormality gear; when the catheter pump is in a temperature abnormality state, the step of starting temperature protection control on the catheter pump further includes: When the current gear position after the reduction is the lowest operating gear position, obtaining a first temperature value of an environment where the catheter pump is located; restarting the catheter pump in the abnormal temperature gear, obtaining the second temperature value, and determining whether the catheter pump is in an abnormal temperature state according to the first target temperature difference; When it is determined that the temperature of the catheter pump is normal, a second alarm signal is generated, where the second alarm signal is used to indicate that the environment in which the catheter pump is located is abnormal.

8. The temperature control method according to claim 7, characterized in that: The temperature control method further comprises: In the case of restarting the catheter pump, recording the number of restarts of the catheter pump; When the restart number is less than or equal to the restart number threshold, the method proceeds to the step of lowering the gear of the catheter pump to a current gear lower than the operating gear when the catheter pump is in an abnormal temperature state and the operating gear is not the lowest operating gear.

9. The temperature control method according to claim 8, characterized in that: The temperature control method further comprises: When the restart number is greater than the restart number threshold, a third alarm signal is generated, where the third alarm signal is used to prompt that the catheter pump fails to restart.

10. The temperature control method according to claim 1, wherein: The step of determining whether the catheter pump is in an abnormal temperature state according to the first target temperature difference includes: If the first target temperature difference is greater than a first temperature difference threshold, it is determined that the catheter pump is in an abnormal temperature state.

11. The temperature control method according to claim 10, characterized in that: The first temperature difference threshold is a first preset threshold or a first preset multiple of a preset safety temperature difference.

12. The temperature control method according to claim 10, characterized in that: The step of determining whether the catheter pump is in an abnormal temperature state according to the first target temperature difference further includes: If the first target temperature difference is less than or equal to the first temperature difference threshold, it is determined that the catheter pump is in a normal temperature state.

13. The temperature control method according to claim 1, wherein: The step of determining whether the catheter pump is in an abnormal temperature state according to the first target temperature difference includes: If the first target ratio is greater than a first ratio threshold, it is determined that the catheter pump is in an abnormal temperature state; wherein the first target ratio refers to the quotient of the second target temperature difference and the preset safety temperature difference; and the second target temperature difference refers to the difference between the first target temperature difference and the preset safety temperature difference.

14. A temperature control device for a catheter pump, characterized in that: The device comprises: a data acquisition module, configured to acquire a first temperature value when the catheter pump is not in operation, the first temperature value being the temperature of the environment in which the catheter pump is located; and to acquire a second temperature value when the catheter pump is in operation, the second temperature value being the pump body temperature of the catheter pump; a temperature determination module, configured to determine whether the catheter pump is in an abnormal temperature state according to a first target temperature difference; wherein the first target temperature difference refers to a difference between the first temperature value and the second temperature value; The temperature protection module is used to start temperature protection control on the catheter pump when the catheter pump is in an abnormal temperature state, so as to keep the catheter pump in a normal temperature state.

15. A control device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 13 are implemented.

16. A catheter pump system, characterized in that: The catheter pump system comprises a catheter pump, a temperature sensor, and a control device according to claim 15; the catheter pump is electrically connected to the control device; The temperature sensor is arranged in the motor of the catheter pump or the housing of the catheter pump and is electrically connected to the control device.

17. The catheter pump system according to claim 16, wherein: The catheter pump system further includes a display screen; the display screen is electrically connected to the control device.

18. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 13 are implemented.

Citation Information

Patent Citations

  • Blood pump control device based on physiological parameters

    CN101983732A

  • Multi-leVel multi-target left Ventricle auxiliary blood pump physiological control system

    CN108671296A