Method, device, control equipment and storage medium for determining catheter pump placement position

Abstract

The present application relates to a method, apparatus, control device, catheter pump system, and storage medium for determining the placement of a catheter pump. The method comprises: obtaining 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; obtaining a second temperature value when the catheter pump is in operation, and determining whether the catheter pump is accurately positioned based on a first target temperature difference; wherein the second temperature value is the temperature of the catheter pump body; and the first target temperature difference is the difference between the first temperature value and the second temperature value. This method can automatically determine whether the catheter pump is accurately positioned, improving safety and adaptability, and ensuring the operating efficiency of the catheter pump.

Description

Technical Field

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

[0002] Currently, the primary strategy for percutaneous interventional treatment of heart disease is to implant 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 assists the heart by pumping blood from the left ventricle into the aorta. However, traditional methods cannot accurately determine the placement of the catheter pump, resulting in 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 catheter pump placement position determination method, device, control equipment, catheter pump system and storage medium that can determine whether the placement position of the catheter pump is correct in order to address the above technical problems.

[0004] In one embodiment, a method for determining the placement 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 placement of the catheter pump is accurate 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] In one embodiment, the step of determining whether the placement position of the catheter pump is accurate based on the first target temperature difference includes: if the first target temperature difference is greater than a first temperature difference threshold and less than a second temperature difference threshold, determining that the placement position of the catheter pump is inaccurate; wherein the first temperature difference threshold is less than the second temperature difference threshold.

[0008] In one embodiment, the first temperature difference threshold is the first preset threshold or the first preset multiple of the preset safety temperature difference value; when the first temperature difference threshold is the first preset threshold, the second temperature difference threshold is the second preset threshold; when the first temperature difference threshold is the first preset multiple of the preset safety temperature difference value, the second temperature difference threshold is the second preset multiple of the preset safety temperature difference value.

[0009] In one embodiment, if the first target temperature difference is greater than a first temperature difference threshold and less than a second temperature difference threshold, the step of determining that the placement position of the catheter pump is inaccurate includes: if the first target temperature difference is greater than the first temperature difference threshold and less than a third temperature difference threshold, determining that the placement position of the catheter pump is inaccurate and the placement position of the catheter pump is the aorta; the third temperature difference threshold is greater than the first temperature difference threshold and less than the second temperature difference threshold.

[0010] In one embodiment, if the first target temperature difference is greater than a first temperature difference threshold and less than a second temperature difference threshold, the step of determining that the placement position of the catheter pump is inaccurate includes: if the first target temperature difference is greater than a third temperature difference threshold and less than the second temperature difference threshold, determining that the placement position of the catheter pump is inaccurate and that the placement position of the catheter pump is the left ventricle; the third temperature difference threshold is greater than the first temperature difference threshold and less than the second temperature difference threshold.

[0011] In one embodiment, the determination method further includes: if the first target temperature difference is greater than a fourth temperature difference threshold, determining that the catheter pump is in an abnormal temperature state; and the fourth temperature difference threshold is greater than the second temperature difference threshold.

[0012] In one embodiment, after the step of determining whether the catheter pump is in an abnormal temperature state, the method further includes: when the catheter pump is in an abnormal temperature state, starting temperature protection control on the catheter pump to keep the catheter pump in a normal temperature state.

[0013] In one embodiment, the step of determining whether the placement position of the catheter pump is accurate based on the first target temperature difference includes: if the first target ratio is greater than a first ratio threshold and less than a second ratio threshold, determining that the placement position of the catheter pump is inaccurate; wherein the first target ratio is the quotient of the 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; and the first ratio threshold is less than the second ratio threshold.

[0014] In one embodiment, if the first target ratio is less than a first ratio threshold, it is determined that the catheter pump is correctly placed; 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.

[0015] In one embodiment, the step of determining whether the catheter pump is accurately positioned based on the first target temperature difference further comprises: if the first target temperature difference is less than or equal to a first temperature difference threshold, determining that the catheter pump is accurately positioned. In one embodiment, while the catheter pump is in operation, obtaining a second temperature value and determining whether the catheter pump is accurately positioned based on the first target temperature difference further comprises: while the catheter pump is in operation, obtaining an operating position of the catheter pump and the second temperature value at the operating position; and determining whether the catheter pump is accurately positioned based on the first target temperature difference, a first temperature difference threshold corresponding to the operating position, and a second temperature difference threshold corresponding to the operating position.

[0016] In one embodiment, a device for determining the placement position of a catheter pump is provided. The device includes: a data acquisition module for acquiring a first temperature value when the catheter pump is not in operation and a second temperature value when the catheter pump is in operation; wherein the first temperature value is the temperature of the catheter pump environment and the second temperature value is the temperature of the catheter pump body; and a position determination module for determining whether the placement position of the catheter pump is accurate 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.

[0017] 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.

[0018] 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.

[0019] In one embodiment, the catheter pump system further includes a display screen; the display screen is electrically connected to the control device and is configured to display the first temperature value and the second temperature value.

[0020] 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.

[0021] The above-mentioned method, device, control equipment, catheter pump system and storage medium for determining the placement position of the catheter pump obtain the temperature of the environment in which the catheter pump is located, i.e., a first temperature value, when the catheter pump is not in operation; and simultaneously obtain the pump body temperature of the catheter pump, i.e., a second temperature value, when the catheter pump is in operation; and, based on the difference between the first temperature value and the second temperature value, i.e., a first target temperature difference, whether the placement position of the catheter pump is accurate can be automatically determined, thereby improving the safety and adaptability of use, ensuring the working efficiency of the catheter pump, and more conveniently and quickly assisting in verifying the placement position of the catheter pump, thereby improving the success rate of high-risk PCI surgery and shortening the operation time of high-risk PCI surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 1 is a schematic diagram of a first flow chart of a method for determining the placement position of a catheter pump in one embodiment;

[0023] Figure 2 Schematic diagram of a second flow chart of a method for determining the placement position of a catheter pump in one embodiment;

[0024] Figure 3 Schematic diagram of a third flow chart of a method for determining a placement position of a catheter pump in one embodiment;

[0025] Figure 4 is a structural block diagram of a device for determining the placement position of a catheter pump in one embodiment;

[0026] Figure 5 is a diagram showing the internal structure of a control device in one embodiment;

[0027] Figure 6 is a first structural schematic diagram of a catheter pump system in one embodiment;

[0028] Figure 7 FIG. 1 is a second structural schematic diagram of a catheter pump system in one embodiment. DETAILED DESCRIPTION

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] The embodiments of the present application provide a method, apparatus, control device, catheter pump system, and storage medium for determining the placement position of a catheter pump, which can automatically determine whether the placement position of the catheter pump is accurate, thereby improving the safety and adaptability of use, ensuring the working efficiency of the catheter pump, improving the success rate of high-risk PCI surgery, and shortening the operation time of high-risk PCI surgery.

[0035] In one embodiment, Figure 1 As shown, a method for determining the placement position of 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.

[0036] Step 102: Acquire a first temperature value when the catheter pump is not in operation.

[0037] 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.

[0038] 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.

[0039] Step 104 : When the catheter pump is in operation, obtain a second temperature value, and determine whether the placement position of the catheter pump is correct based on the first target temperature difference.

[0040] The second temperature value is the temperature of the catheter pump body, and the first target temperature difference is the difference between the first and second temperature values. Whether the catheter pump is accurately positioned refers to whether the catheter pump is accurately positioned. That is, if the catheter pump is accurately positioned, it is considered correctly positioned, and if it is not accurately positioned, it is considered incorrectly positioned. When the catheter pump body is located within the aorta or left ventricle, the pressure differential between the inlet and outlet of the catheter pump body decreases, increasing the flow rate of the catheter pump body, increasing the fluid flow rate, and optimizing the heat dissipation environment. However, this increased flow rate increases the motor current, resulting in an increase in heat generation. When both the heat generation and the heat dissipation environment change simultaneously, the optimized heat dissipation environment is insufficient to offset the increased heat, causing the catheter pump body temperature to increase. Therefore, the first target temperature difference can be used to determine whether the catheter pump is accurately positioned.

[0041] When the catheter pump is in operation, the control device can obtain the second temperature value to understand the corresponding pump body temperature value when the catheter pump is operating in the human body. The pump body temperature value is generally obtained by collecting the motor temperature of the catheter pump, and the first target temperature difference is calculated using the obtained second temperature value and the first temperature value, so as to determine whether the placement position of the catheter pump is accurate based on the first target temperature difference.

[0042] 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.

[0043] In a specific example, if the catheter pump inlet window is in the left ventricle and the outlet window is in the aorta, the catheter pump is considered to be placed in the correct position; if the catheter pump inlet window is not in the left ventricle or the outlet window is not in the aorta, the catheter pump is considered to be placed in an incorrect position. The above is only a specific example. In actual application, it can be flexibly set according to needs and is not limited here.

[0044] In one embodiment, Figure 2 As shown, the step of determining whether the placement position of the catheter pump is correct according to the first target temperature difference includes steps 201 and 202.

[0045] Step 201: If the first target temperature difference is greater than a first temperature difference threshold and less than a second temperature difference threshold, it is determined that the placement position of the catheter pump is inaccurate.

[0046] Step 202: If the first target temperature difference is less than or equal to the first temperature difference threshold, it is determined that the placement position of the catheter pump is correct.

[0047] The first temperature difference threshold is less than the second temperature difference threshold. The control device may determine that the catheter pump is inaccurately positioned when the first target temperature difference is greater than the first temperature difference threshold and less than the second temperature difference threshold. Furthermore, the control device may determine that the catheter pump is accurately positioned when the first target temperature difference is less than or equal to the first temperature difference threshold.

[0048] In this embodiment, the above steps can automatically determine whether the placement position of the catheter pump is accurate, thereby improving the working efficiency, use safety and adaptability of the catheter pump.

[0049] In one embodiment, the first temperature difference threshold is a first preset threshold or a first preset multiple of a preset safety temperature difference. Specifically, if the first temperature difference threshold is the first preset threshold, the second temperature difference threshold is the second preset threshold; if the first temperature difference threshold is the first preset multiple of the preset safety temperature difference, the second temperature difference threshold is the second preset multiple of the preset safety temperature difference. This improves the efficiency of the method for determining the placement of the catheter pump.

[0050] In one specific example, laboratory measurement data from a catheter pump indicates a preset safety temperature difference of 0.7°C, a first preset threshold of 0.91°C, a second preset threshold of 1.40°C, a first preset multiple of 1.3, and a second preset multiple of 2. In other words, during the process of determining the placement of the catheter pump, the first preset threshold of 0.91°C obtained from the measurement data can be directly used as the first temperature difference threshold, and the first preset threshold of 1.40°C can be used as the second temperature difference threshold. If the first temperature difference threshold is 0.91°C, the second temperature difference threshold is 1.40°C. 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. If the calculated first temperature difference threshold is 0.91°C, which is 1.3 times 0.7°C, the second temperature difference threshold is 1.40°C, which is twice 0.7°C.

[0051] It is understood that if the first target temperature difference is greater than 0.91°C and less than 1.40°C, the catheter pump is determined to be inaccurately positioned. Conversely, if the first target temperature difference is less than or equal to 0.91°C, the catheter pump is determined to be accurately positioned. The above is merely a specific example; in actual applications, this can be flexibly configured based on needs and is not intended to be limiting.

[0052] 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.

[0053] In a specific example, when the catheter pump is in operation, the preset safety temperature difference corresponding to each gear is different, and the specific temperature increase of the temperature difference in each gear is also different under different states. However, after experimental testing, if the catheter pump is operated in the fourth gear, according to the measurement data, the preset safety temperature difference is about 0.7°C and not higher than 0.91°C. When the pump body of the catheter pump is located in the aorta, the temperature difference is 0.91°C to 1.03°C, and when the pump body of the catheter pump is located in the left ventricle, the temperature difference is 1.1°C to 1.39°C; when the catheter pump is operated in the fifth gear, the preset safety temperature difference is about 0.8°C but not higher than 1.04°C. When the pump body of the catheter pump is located in the aorta, the temperature difference is 1.06°C to 1.2°C, and when the pump body of the catheter pump is located in the left ventricle, the temperature difference is 1.23°C to 1.59°C; all of the above values ​​can be stored in the control device. That is, when the catheter pump is operating in the fourth gear, the first temperature difference threshold is 0.91°C and the second temperature difference threshold is 1.40°C; or when the catheter pump is operating in the fifth gear, the first temperature difference threshold is 1.05°C and the second temperature difference threshold is 1.60°C. In other words, during operation, the pump position can be determined by reading and comparing the above data according to the operating gear. The above are only specific examples; in actual applications, flexible settings can be made based on needs and are not limited here.

[0054] In another embodiment, the step of determining whether the placement position of the catheter pump is accurate according to the first target temperature difference includes:

[0055] If the first target ratio is greater than a first ratio threshold and less than a second ratio threshold, it is determined that the placement position of the catheter pump is inaccurate; wherein 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; and the first ratio threshold is less than the second ratio threshold.

[0056] The control device may pre-store a preset safety temperature difference, a first ratio threshold, and a second 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 a first target temperature difference, calculate the difference between the first target temperature difference and the preset safety temperature difference to obtain a second target temperature difference, and calculate a first target ratio by dividing the second target temperature difference by the quotient of 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 inaccurately positioned. Conversely, if the first target ratio is less than the first ratio threshold, the catheter pump is determined to be accurately positioned.

[0057] In this embodiment, the above steps can automatically determine whether the catheter pump is correctly positioned, thereby improving the operational efficiency, operational safety, and adaptability of the catheter pump. In a specific example, when the catheter pump is in operation, each gear corresponds to a different preset safety temperature difference. Furthermore, the specific temperature increase of each gear's temperature difference varies under different conditions. However, experimental testing has shown that the percentage of the specific temperature increase of each gear's temperature difference relative to the preset safety temperature difference for that gear is essentially constant, so a percentage can also be used as a judgment criterion. In the above embodiment, the first and second ratio thresholds are specifically percentage values.

[0058] Taking the catheter pump running at the fourth operating gear as an example, the temperature difference when the pump body is located in the aorta is 0.91℃ to 1.05℃, which is 30% higher than the preset safety temperature difference of 0.7℃ for this gear. At the same time, the temperature is lower than the preset safety temperature by 50%, that is, The specific judgment steps of this specific example are as follows: when the first temperature value and the second temperature value are obtained, the first target temperature difference can be obtained by calculating the difference between the first temperature value and the second temperature value, the second target temperature difference can be obtained by calculating the difference between the first target temperature difference and the preset safety temperature difference of 0.7°C, and the first target ratio can be 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 the first ratio threshold of 30% and less than the third ratio threshold of 50%, it is determined that the placement position of the catheter pump is inaccurate and the placement position of the catheter pump is the aorta.

[0059] It is understood that the first ratio threshold, the second ratio threshold, and the third ratio threshold can be pre-obtained from laboratory measurement data and can be pre-stored in the control device. That is, when the first target ratio is less than the first ratio threshold, i.e., when the first ratio threshold is 30%, the control device can estimate cardiac output and the catheter pump body can operate normally.

[0060] The determination step in this embodiment may specifically include: when the first target ratio is greater than a first ratio threshold of 30% and less than a third ratio threshold of 50%, the control device determines that the catheter pump is located within the aorta, and the control device triggers an alarm, warning, "The catheter pump is located within the aorta. The current position is incorrect and the catheter pump position needs to be adjusted." When the catheter pump is located within the aorta, the pressure differential between the outlet and inlet of the catheter pump decreases, and the flow rate of the catheter pump increases.

[0061] When the first target ratio is greater than a third ratio threshold of 50% and less than a second ratio threshold of 100%, the control device determines that the catheter pump is located within the left ventricle. The control device then displays an alarm, warning, "The catheter pump is located within the left ventricle. The current position is incorrect and requires adjustment." When the catheter pump is located within the left ventricle, the pressure differential between the catheter pump's outlet and inlet decreases, increasing the catheter pump's flow rate.

[0062] When the first target ratio exceeds the fourth ratio threshold of 200%, the control device issues a temperature anomaly alarm and activates the temperature protection control function. If the pump body is accidentally damaged or the inlet is blocked during implantation, causing abnormal pump operation, the designed temperature rise of the pump body cannot be effectively guaranteed. The above is only a specific example; in actual application, flexible settings can be set according to needs and are not limited here.

[0063] Based on this, a catheter pump is implanted in a human body, and when the catheter pump is not in operation, the temperature of the environment in which the catheter pump is located, i.e., a first temperature value, is obtained; at the same time, when the catheter pump is in operation, the pump body temperature of the catheter pump, i.e., a second temperature value, is obtained; and, based on the difference between the first temperature value and the second temperature value, i.e., a first target temperature difference value, it is possible to automatically determine whether the placement position of the catheter pump is accurate, thereby improving the safety and adaptability of use, ensuring the working efficiency of the catheter pump, and more conveniently and quickly assisting in verifying the placement position of the catheter pump, thereby improving the success rate of high-risk PCI surgery and shortening the operation time of high-risk PCI surgery.

[0064] In another embodiment, Figure 3 As shown, if the first target temperature difference is greater than the first temperature difference threshold and less than the second temperature difference threshold, the step of determining that the placement position of the catheter pump is inaccurate includes steps 301 to 302.

[0065] Step 301: If the first target temperature difference is greater than the first temperature difference threshold and less than the third temperature difference threshold, it is determined that the placement of the catheter pump is inaccurate and the placement of the catheter pump is in the aorta (ie, the pump body of the catheter pump is located in the aorta).

[0066] Step 302: If the first target temperature difference is greater than the third temperature difference threshold and less than the second temperature difference threshold, it is determined that the placement of the catheter pump is inaccurate and the placement of the catheter pump is the left ventricle (ie, the pump body of the catheter pump is located in the left ventricle).

[0067] The third temperature difference threshold is greater than the first temperature difference threshold and less than the second temperature difference threshold. When the first target temperature difference is greater than the first temperature difference threshold and less than the third temperature difference threshold, the control device determines that the catheter pump is inaccurately positioned and is located in the aorta. In one embodiment, if the first target temperature difference is greater than the first temperature difference threshold and less than the third temperature difference threshold, a first alarm is output to indicate that the catheter pump is inaccurately positioned and is located in the aorta, and that the catheter pump's position needs to be adjusted, thereby avoiding a slight increase in the catheter pump housing temperature caused by the catheter pump being located in the aorta.

[0068] If the first target temperature difference is greater than the third temperature difference threshold and less than the second temperature difference threshold, the control device may determine that the catheter pump is incorrectly positioned and is located in the left ventricle. In one embodiment, if the first target temperature difference is greater than the third temperature difference threshold and less than the second temperature difference threshold, a second alarm is output to indicate that the catheter pump is incorrectly positioned and is located in the left ventricle, and that the catheter pump's position needs to be adjusted, thereby avoiding a significant increase in the catheter pump housing temperature caused by the catheter pump being located in the left ventricle.

[0069] It can be understood that the third temperature difference threshold is the third preset threshold or the third preset multiple of the preset safety temperature difference value; when the first temperature difference threshold is the first preset threshold, the third temperature difference threshold is the third preset threshold; when the first temperature difference threshold is the first preset multiple of the preset safety temperature difference value, the third temperature difference threshold is the third preset multiple of the preset safety temperature difference value.

[0070] In this embodiment, when the first target temperature difference is greater than the first temperature difference threshold and less than the third temperature difference threshold, it is determined that the placement of the catheter pump is inaccurate and that the catheter pump is placed in the aorta. At the same time, when the first target temperature difference is greater than the third temperature difference threshold and less than the second temperature difference threshold, it is determined that the placement of the catheter pump is inaccurate and that the catheter pump is placed in the left ventricle. In this way, the placement position of the catheter pump can be accurately understood, and the staff can be promptly prompted to adjust the placement position of the catheter pump, thereby ensuring the working efficiency of the catheter pump.

[0071] In one embodiment, the determination method further includes: if the first target temperature difference is greater than a fourth temperature difference threshold, determining that the catheter pump is in an abnormal temperature state.

[0072] The fourth temperature difference threshold is greater than the second temperature difference threshold. When the first target temperature difference is greater than the fourth temperature difference threshold, the control device determines that the catheter pump is in an abnormal temperature state. It is understood that the fourth temperature difference threshold is a fourth preset threshold or a fourth preset multiple of a preset safety temperature difference; when the first temperature difference threshold is the first preset threshold, the fourth temperature difference threshold is the fourth preset threshold; when the first temperature difference threshold is the first preset multiple of the preset safety temperature difference, the fourth temperature difference threshold is the fourth preset multiple of the preset safety temperature difference. In one embodiment, if the first target temperature difference is greater than the fourth temperature difference threshold, a third alarm is output to indicate that the catheter pump is in an abnormal temperature state and requires temperature protection. In this embodiment, the above steps can accurately identify whether the catheter pump is in an abnormal temperature state, thereby preventing an increase in the catheter pump's ambient temperature due to damage to the catheter pump or inlet blockage.

[0073] In one embodiment, after determining that the catheter pump is in an abnormal temperature state, the method further includes: controlling the catheter pump to activate a temperature protection program if the catheter pump is in an abnormal temperature state, thereby restoring the catheter pump to a normal temperature state. In this embodiment, the above steps accurately identify whether the catheter pump is in an abnormal temperature state, while preventing an increase in the catheter pump's ambient temperature due to damage to the catheter pump or inlet blockage. This prevents damage to red blood cells and other blood substances caused by elevated blood temperature, thereby ensuring the operating efficiency of the catheter pump.

[0074] Furthermore, in one embodiment, when the catheter pump is in an operating state, the step of obtaining a second temperature value and determining whether the placement position of the catheter pump is accurate based on the first target temperature difference includes: 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 placement position of the catheter pump is accurate based on the first target temperature difference, a first temperature difference threshold corresponding to the operating gear, and a second temperature difference threshold corresponding to the operating gear.

[0075] Because the catheter pump's heat dissipation environment varies depending on the operating position of the catheter pump and the blood flow rate, in different operating states, in this embodiment, when the catheter pump is in operation, the control device can obtain the operating position of the catheter pump and the second temperature value of the catheter pump at that operating position. Simultaneously, based on the first target temperature difference, the first temperature difference threshold corresponding to that operating position, and the second temperature difference threshold corresponding to that operating position, the correct placement of the catheter pump can be determined, thereby improving the accuracy of the catheter pump placement determination.

[0076] It should be understood that although Figure 1-3 The 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 1-3 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.

[0077] In one embodiment, Figure 4 As shown, a device for determining the placement position of a catheter pump is provided, comprising: a data acquisition module 410 and a position determination module 420 .

[0078] Among them, the data acquisition module 410 is used to obtain a first temperature value when the catheter pump is not in operation; the data acquisition module 410 is also used to obtain a second temperature value when the catheter pump is in operation; wherein the first temperature value is the temperature of the catheter pump environment; the second temperature value is the pump body temperature of the catheter pump; the position judgment module 420 is used to judge whether the placement position of the catheter pump is accurate based on the first target temperature difference; the first target temperature difference refers to the difference between the first temperature value and the second temperature value.

[0079] In one embodiment, the position determination module 420 includes a first position determination unit. The first position determination unit is configured to determine that the catheter pump is not correctly positioned if the first target temperature difference is greater than a first temperature difference threshold and less than a second temperature difference threshold; wherein the first temperature difference threshold is less than the second temperature difference threshold.

[0080] In one embodiment, the first position determination unit is further configured to determine that the placement position of the catheter pump is accurate if the first target temperature difference is less than or equal to a first temperature difference threshold.

[0081] In one embodiment, the first temperature difference threshold is the first preset threshold or the first preset multiple of the preset safety temperature difference value; when the first temperature difference threshold is the first preset threshold, the second temperature difference threshold is the second preset threshold; when the first temperature difference threshold is the first preset multiple of the preset safety temperature difference value, the second temperature difference threshold is the second preset multiple of the preset safety temperature difference value.

[0082] In one embodiment, the first position determination unit includes a first position determination subunit. The first position determination subunit is configured to determine that the catheter pump is not correctly positioned and is positioned in the aorta if the first target temperature difference is greater than a first temperature difference threshold and less than a third temperature difference threshold; and the third temperature difference threshold is greater than the first temperature difference threshold and less than the second temperature difference threshold.

[0083] In one embodiment, the first position determination unit includes a second position determination subunit. The second position determination subunit is configured to determine that the placement of the catheter pump is inaccurate and that the catheter pump is placed in the left ventricle if the first target temperature difference is greater than a third temperature difference threshold and less than a second temperature difference threshold; and the third temperature difference threshold is greater than the first temperature difference threshold and less than the second temperature difference threshold.

[0084] In one embodiment, the device for determining the placement of the catheter pump further includes a temperature determination module, wherein the temperature determination module is configured to determine that the catheter pump is in an abnormal temperature state if the first target temperature difference is greater than a fourth temperature difference threshold, and the fourth temperature difference threshold is greater than the second temperature difference threshold.

[0085] In one embodiment, the device for determining the placement position of the catheter pump further includes a temperature protection module, wherein the temperature protection module is configured to activate temperature 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.

[0086] In one embodiment, the position determination module 420 includes a second position determination unit. The second position determination unit is configured to determine that the catheter pump is incorrectly positioned if a first target ratio is greater than a first ratio threshold and less than a second ratio threshold. The first target ratio is the quotient of the 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. The first ratio threshold is less than the second ratio threshold. In this embodiment, the position determination module 420 includes only the second position determination unit and does not include the first position determination unit. Alternatively, the position determination module 420 includes both the second and first position determination units.

[0087] In one embodiment, the second position determination unit is further configured to determine that the placement position of the catheter pump is accurate if the first target ratio is less than or equal to a first ratio threshold.

[0088] In one embodiment, the data acquisition module 410 is further configured to obtain the current operating position of the catheter pump and the second temperature value at the current operating position when the catheter pump is in operation; the position determination module 420 determines whether the placement position of the catheter pump is accurate based on the first target temperature difference, the first temperature difference threshold and / or the first ratio threshold corresponding to the current operating position, and the second temperature difference threshold and / or the second ratio threshold corresponding to the current operating position.

[0089] The specific definitions of the catheter pump placement device can be found in the definitions of the catheter pump placement method described above and will not be further elaborated here. Each module within the aforementioned catheter pump placement device can be implemented in whole or in part via software, hardware, or a combination thereof. Each of these modules can be embedded in or independent of a processor within a computer device in hardware form, or stored in a computer device memory in software form, allowing the processor to call and execute the corresponding operations of each module.

[0090] In one embodiment, a control device 630 is provided. The control device 630 may be a terminal, and its internal structure diagram may be as follows: Figure 5 As shown. The control device 630 includes a processor, a memory, a communication interface, a display screen and an input device connected via a system bus. Among them, the processor of the control device 630 is used to provide computing and control capabilities. The memory of the control device 630 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 630 is used to communicate with an external terminal in a wired or wireless manner, and 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 630 can be a liquid crystal display screen or an electronic ink display screen, and the input device of the control device 630 can be a touch layer covering the display screen, or a button, trackball or touchpad provided on the housing of the control device 630, or an external keyboard, touchpad or mouse.

[0091] Those skilled in the art will understand that Figure 5 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 630 to which the solution of the present application is applied. The specific control device 630 may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0092] In one embodiment, a control device 630 is provided. The control device 630 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.

[0093] In one embodiment, Figure 6 As shown, a catheter pump system is provided, which includes a catheter pump 610, a temperature sensor 620 and any control device 630 in the above control device embodiments; the catheter pump 610 is electrically connected to the control device.

[0094] The temperature sensor 620 is disposed in the motor of the catheter pump 610 or in the housing of the catheter pump 610 and is electrically connected to the control device 630. In a specific example, Figure 7 As shown, temperature sensor 620 can be a thermocouple, thermistor, resistance temperature detector (RTD), etc. The signal line of temperature sensor 620 extends from the cable junction at the rear of the catheter pump 610 motor to the motor surface. The probe is located at the front, middle, rear, and other locations on the motor surface of catheter pump 610, or inside the motor of catheter pump 610. The temperature acquisition frequency of temperature sensor 620 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.

[0095] In this embodiment, the above-mentioned tube pump system can automatically determine whether the placement position of the catheter pump is accurate, thereby improving the safety and adaptability of use, ensuring the working efficiency of the catheter pump, and more conveniently and quickly assisting in verifying the placement position of the catheter pump, thereby improving the success rate of high-risk PCI surgery and shortening the operation time of high-risk PCI surgery.

[0096] In one embodiment, Figure 6 As shown, the catheter pump system further includes a display screen 640 ; the display screen 640 is electrically connected to the control device 630 and can be used to display the first temperature value and the second temperature value, the position status of the catheter pump, and / or an alarm message. Thus, the convenience of the catheter pump system is improved.

[0097] 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.

[0098] 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).

[0099] The technical features of the above embodiments can be combined arbitrarily. 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.

[0100] 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 method for determining the placement of a catheter pump, characterized in that: The judgment 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, a second temperature value is obtained, and whether the placement position of the catheter pump is accurate is determined based on a 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.

2. The judgment method according to claim 1, characterized in that: The step of determining whether the placement position of the catheter pump is correct according to the first target temperature difference comprises: If the first target temperature difference is greater than a first temperature difference threshold and less than a second temperature difference threshold, it is determined that the placement position of the catheter pump is inaccurate; wherein the first temperature difference threshold is less than the second temperature difference threshold.

3. The judgment method according to claim 2, characterized in that: The first temperature difference threshold is a first preset threshold or a first preset multiple of a preset safety temperature difference; when the first temperature difference threshold is the first preset threshold, the second temperature difference threshold is a second preset threshold; In a case where the first temperature difference threshold is a first preset multiple of the preset safety temperature difference value, the second temperature difference threshold is a second preset multiple of the preset safety temperature difference value.

4. The judgment method according to claim 2, characterized in that: The step of determining that the placement position of the catheter pump is inaccurate if the first target temperature difference is greater than a first temperature difference threshold and less than a second temperature difference threshold comprises: If the first target temperature difference is greater than the first temperature difference threshold and less than a third temperature difference threshold, it is determined that the placement position of the catheter pump is inaccurate and the placement position of the catheter pump is the aorta; the third temperature difference threshold is greater than the first temperature difference threshold and less than the second temperature difference threshold.

5. The judgment method according to claim 2, characterized in that: The step of determining that the placement position of the catheter pump is inaccurate if the first target temperature difference is greater than a first temperature difference threshold and less than a second temperature difference threshold comprises: If the first target temperature difference is greater than a third temperature difference threshold and less than the second temperature difference threshold, it is determined that the placement position of the catheter pump is inaccurate and the placement position of the catheter pump is the left ventricle; the third temperature difference threshold is greater than the first temperature difference threshold and less than the second temperature difference threshold.

6. The judgment method according to claim 2, characterized in that: The determination method further includes: If the first target temperature difference is greater than a fourth temperature difference threshold, it is determined that the catheter pump is in an abnormal temperature state; and the fourth temperature difference threshold is greater than the second temperature difference threshold.

7. The judgment method according to claim 6, characterized in that: After the step of determining that the catheter pump is in an abnormal temperature state, the following step is further included: 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.

8. The judgment method according to claim 1, characterized in that: The step of determining whether the placement position of the catheter pump is correct according to the first target temperature difference comprises: If the first target ratio is greater than a first ratio threshold and less than a second ratio threshold, it is determined that the placement position of the catheter pump is inaccurate; wherein 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; and the first ratio threshold is less than the second ratio threshold.

9. The judgment method according to claim 1, characterized in that: The step of determining whether the placement position of the catheter pump is correct according to the first target temperature difference comprises: If the first target ratio is less than a first ratio threshold, it is determined that the placement position of the catheter pump is accurate; wherein 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.

10. The judgment method according to claim 1, characterized in that: The step of determining whether the placement position of the catheter pump is correct 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, it is determined that the placement position of the catheter pump is correct.

11. The judgment method according to claim 1, characterized in that: The step of obtaining the second temperature value and determining whether the placement position of the catheter pump is correct according to the first target temperature difference when the catheter pump is in operation includes: When the catheter pump is in an operating state, obtaining an operating gear of the catheter pump and the second temperature value at the operating gear; Whether the placement position of the catheter pump is accurate is determined according to the first target temperature difference, a first temperature difference threshold corresponding to the operating gear, and a second temperature difference threshold corresponding to the operating gear.

12. A device for determining the placement position of a catheter pump, characterized in that: The judging device comprises: a data acquisition module, configured to acquire a first temperature value when the catheter pump is not in operation and to acquire a second temperature value when the catheter pump is in operation; wherein the first temperature value is the temperature of the environment in which the catheter pump is located, and the second temperature value is the pump body temperature of the catheter pump; The position determination module determines whether the placement position of the catheter pump is accurate according to a first target temperature difference; wherein the first target temperature difference refers to the difference between the first temperature value and the second temperature value.

13. 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 11 are implemented.

14. A catheter pump system, characterized in that: The catheter pump system includes a catheter pump, a temperature sensor and a control device as described in claim 13; 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.

15. The catheter pump system according to claim 14, wherein: The catheter pump system further includes a display screen; the display screen is electrically connected to the control device and is used to display the first temperature value and the second temperature value.

16. 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 11 are implemented.

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