WO2023173963A1

WO2023173963A1 - Method, system and apparatus for detecting blood-pumping catheter, and device, medium and product

Info

Publication number: WO2023173963A1
Application number: PCT/CN2023/075164
Authority: WO
Inventors: 薛志宽; 贾林壮; 曹殿嘉; 易鹏
Original assignee: 丰凯利医疗器械(上海)有限公司
Priority date: 2022-03-14
Filing date: 2023-02-09
Publication date: 2023-09-21
Also published as: CN116271492A; CN114588530A

Abstract

The present application belongs to the technical field of medical treatment. Disclosed are a method, system and apparatus for detecting a blood-pumping catheter, and a device, a medium and a product. The method comprises: acquiring electric parameters of an electric motor at a plurality of moments within a first duration, wherein the electric motor is used for driving a blood-pumping catheter to operate, and the first duration is not shorter than the duration of one cardiac cycle; determining fluctuation features of the electric parameters according to the electric parameters at the plurality of moments; and when a fluctuation feature meets a preset fluctuation condition, determining that the blood-pumping catheter is located at a correct position.

Description

Detection methods, systems, devices, equipment, media and products for blood pump catheters

Cross-references to related applications

This application claims priority to Chinese patent application 202210246543.6 titled "Method and System for Detecting the Position of a Blood Pump Catheter in the Human Body" submitted on March 14, 2022. The entire content of this application is incorporated herein by reference.

Technical field

This application belongs to the field of medical technology, and in particular relates to a detection method, system, device, equipment, medium and product for a blood pump catheter.

Background technique

Short-term blood pump is one of the effective treatments for cardiovascular and related complications. It provides patients with hemodynamic support in the short term and promotes the rapid recovery of the functions of the heart and other important tissues and organs. The effectiveness of short-term blood pumps is mainly reflected in the improvement of the patient's hemodynamic parameters, the most important of which are the improvement of the patient's aortic pressure and cardiac output.

The working principle of a blood pump is to build a blood flow channel between the left ventricle and the aorta. The impeller continuously rotates at a high speed so that blood flows from the left ventricle into the aorta through the pumping conduit of the blood pump. In the correct position, the inflow end of the pump catheter is located in the patient's left ventricle, and the outflow end is located in the patient's aorta. Once the position of the pump catheter changes, the inflow end and the outflow end are located in the aorta or the left heart at the same time. Indoors, the blood pump will not be able to achieve the expected working status and will be unable to transport blood from the left ventricle to the aorta, thus unable to support the patient's hemodynamics and achieve expected functions. In addition, incorrect positioning of the blood pumping catheter will also increase the probability of complications such as hemolysis and bleeding. Therefore, the correct position of the blood pump catheter is the prerequisite and basis for realizing the blood pump function.

Currently, the position of the blood pump catheter can be quickly determined only in cath labs or operating rooms with imaging equipment such as digital subtraction angiography (DSA) and ultrasound. However, because patients who receive blood pump support have to wait a long time after routine surgery. May not be able to recover in the short term Heart function still requires blood pump support. At this time, the patient will be transferred to the Intensive Care Unit (ICU). The ICU usually does not have imaging equipment such as DSA and ultrasound, and cannot detect the blood pumping catheter in a timely and real-time manner. location, and real-time detection cannot be achieved even in cath labs or operating rooms equipped with imaging equipment such as DSA and ultrasound.

Contents of the invention

Embodiments of the present application provide a detection method, system, device, equipment, medium and product for a blood pumping catheter, which can at least solve the problem in related technologies that the position of a blood pumping catheter cannot be detected in a timely and real-time manner.

In a first aspect, embodiments of the present application provide a method for detecting a blood pumping catheter, which method includes:

Obtain the electrical parameters of the motor at multiple moments within a first period of time. The motor is used to drive the blood pumping catheter to operate. The first period of time is not less than the length of one cardiac cycle;

Determine the fluctuation characteristics of the electrical parameters based on the electrical parameters at multiple times;

When the fluctuation characteristics meet the preset fluctuation conditions, it is determined that the blood pumping catheter is in the correct position.

In a second aspect, embodiments of the present application provide a blood pumping catheter detection system, which includes a blood pumping catheter, a motor and a controller;

The blood pumping catheter is located in the human body and connected to the motor;

The motor is connected to the controller and used to drive the blood pumping catheter;

The controller is used to obtain the electrical parameters of the motor at multiple moments within a first period of time. The motor is used to drive the blood pump catheter to operate. The first period of time is not less than the length of one cardiac cycle. According to the electrical parameters at multiple moments, determine the electrical parameters. The fluctuation characteristics of the parameters, when the fluctuation characteristics meet the preset fluctuation conditions, determine that the blood pumping catheter is in the correct position.

In a third aspect, embodiments of the present application provide a detection device for a blood pumping catheter, which device includes:

The acquisition module is used to acquire the electrical parameters of the motor at multiple moments within a first duration. The motor is used to drive the blood pump catheter to operate. The first duration is not less than the duration of one cardiac cycle;

The first determination module is used to determine the fluctuation characteristics of the electrical parameters based on the electrical parameters at multiple times;

The second determination module is used to determine that the blood pumping catheter is in the correct position when the fluctuation characteristics meet the preset fluctuation conditions.

In a fourth aspect, embodiments of the present application provide an electronic device, which includes: a processor and a memory storing computer program instructions;

When the processor executes the computer program instructions, it implements: obtaining the electrical parameters of the motor at multiple moments within a first duration, and the motor is used to drive the blood pumping catheter to operate, and the first duration is not less than the duration of one cardiac cycle,

According to the electrical parameters at multiple times, the fluctuation characteristics of the electrical parameters are determined,

In a fifth aspect, embodiments of the present application provide a computer storage medium. Computer program instructions are stored on the computer storage medium. When the computer program instructions are executed by a processor, the following steps are implemented: obtaining multiple data of the motor within a first period of time. The electrical parameters of the moment, the motor is used to drive the blood pumping catheter to operate, the first duration is not less than the duration of one cardiac cycle,

In a sixth aspect, embodiments of the present application provide a computer program product. When instructions in the computer program product are executed by a processor of an electronic device, the electronic device obtains electrical parameters of the motor at multiple moments within a first period of time. , the motor is used to drive the blood pumping catheter, the first duration is not less than the duration of one cardiac cycle,

The detection method, system, device, equipment, medium and product of the blood pumping catheter according to the embodiments of the present application can obtain the electrical parameters of the motor used to drive the blood pumping catheter at multiple times within a first period of time, and based on multiple The electrical parameters at each moment are determined to determine the fluctuation characteristics of the electrical parameters. When the fluctuation characteristics meet the preset fluctuation conditions, the blood pumping catheter is determined to be in the correct position. In this way, it can be detected in real time whether the blood pumping catheter is in the correct position, so that when the blood pumping catheter is in the wrong position, measures can be promptly discovered and taken to protect the patient's life safety.

Description of the drawings

In order to explain the technical solutions of the embodiments of the present application more clearly, the drawings required to be used in the embodiments of the present application will be briefly introduced below. For those of ordinary skill in the art, it is not necessary to With creative effort, other drawings can also be obtained based on these drawings.

Figure 1 is a schematic structural diagram of a blood pump catheter detection system provided by an embodiment of the present application;

Figure 2 is a flow chart of a detection method for a blood pump catheter provided by an embodiment of the present application;

Figure 3 is a schematic diagram of the change curve of left ventricular pressure and aortic pressure within a cardiac cycle provided by an embodiment of the present application;

Figure 4a is a schematic diagram of a change curve of motor current provided by an embodiment of the present application;

Figure 4b is a schematic diagram of another motor current change curve provided by an embodiment of the present application;

Figure 5 is a schematic structural diagram of a detection device for a blood pump catheter provided by an embodiment of the present application;

Figure 6 is a schematic structural diagram of an electronic device provided by an embodiment of the present application.

Detailed ways

Features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be described in further detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only intended to explain the application, but not to limit the application. It will be apparent to one skilled in the art that the present application may be practiced without some of these specific details. The following description of embodiments is merely intended to provide a better understanding of the present application by illustrating examples thereof.

It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that these entities or operations are mutually exclusive. any such actual relationship or sequence exists between them. Furthermore, the terms "comprises," "comprises," or any other variations thereof are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that includes a list of elements includes not only those elements, but also those not expressly listed other elements, or elements inherent to the process, method, article or equipment. Without further limitation, an element defined by the statement "comprising..." does not exclude the presence of additional identical elements in a process, method, article, or device that includes the stated element.

Figure 1 shows the structure of a blood pump catheter detection system provided by an embodiment of the present application. Schematic diagram. As shown in Figure 1, the blood pump 101 may include a controller 102 and a catheter pump 103. The catheter pump 103 may include a blood pumping catheter 104 and a motor 105. The detection system of the blood pumping catheter may include a blood pumping catheter 104, a motor 105 and a control unit. Device 102;

The blood pumping catheter 104 is located in the human body, connected to the motor 105, and used to transport blood in the human body driven by the motor 105;

The motor 105 is connected to the controller 102 and is used to drive the blood pumping catheter 104 to operate;

The controller 102 is configured to execute a blood pumping catheter detection method provided by an embodiment of the present application.

A method for detecting a blood pumping catheter provided by an embodiment of the present application will be described in detail below.

Figure 2 shows a schematic flow chart of a blood pump catheter detection method provided by an embodiment of the present application. It should be noted that the blood pump catheter detection method can be applied to a blood pump controller, as shown in Figure 2 , the detection method of the blood pump catheter may include the following steps:

S210, obtain the electrical parameters of the motor at multiple moments within the first duration;

S220, determine the fluctuation characteristics of the electrical parameters based on the electrical parameters at multiple times;

S230, when the fluctuation characteristics meet the preset fluctuation conditions, determine that the blood pumping catheter is in the correct position.

Thus, it is possible to obtain the electrical parameters of the motor used to drive the blood pumping catheter at multiple times within the first period of time, and determine the fluctuation characteristics of the electrical parameters based on the electrical parameters at multiple times. When the fluctuation characteristics meet the preset fluctuation condition, make sure the pump catheter is in the correct position. In this way, it can be detected in real time whether the blood pumping catheter is in the correct position, so that when the blood pumping catheter is in the wrong position, measures can be promptly discovered and taken to protect the patient's life safety.

Referring to S210, the blood pump may include a controller and a catheter pump. The catheter pump may include a blood pumping catheter and a motor. The blood pumping catheter may include an inlet, an outlet, a transvalvular hose, a pumping impeller, a catheter body, and a pressure sensor/transducer. . The controller can include a display screen, electronic components, software and power system, etc. The controller can be used to provide an interactive interface for control and monitoring, input information, and provide alarm information and alarm solutions. The motor can be used to drive the blood pump catheter. The blood pump catheter is located in the human body and can be used to transport blood in the human body driven by a motor.

The pumping catheter may be in the right place in the body, or it may be in the wrong place. correct position The inlet of the pumping catheter is located in the left ventricle and the outlet of the pumping catheter is located in the aorta. The wrong position is that the inlet and outlet of the pumping catheter are both located in the left ventricle or both are located in the aorta. If the pumping catheter is in the correct position, it can transport blood from the left ventricle to the aorta, thereby reducing left ventricular work and oxygen consumption, and ultimately supporting the patient's hemodynamics; if the pumping catheter is in the wrong position, The inability to pump blood from the left ventricle to the aorta prevents hemodynamic support for the patient.

A cardiac cycle can be divided into ventricular systole and other phases. As shown in Figure 3, during ventricular systole, the valve opens and the aortic pressure is very close to the left ventricular pressure. At this time, if the pump catheter is in the correct position, the pump The pressure difference between the inlet and outlet of the blood catheter is close to 0. In other stages of the cardiac cycle, the valve closes, the left ventricular pressure drops rapidly, and the aortic pressure is significantly higher than the left ventricular pressure. At this time, if the pumping catheter is in the correct position, the pressure difference between the inlet and outlet of the pumping catheter will larger. Therefore, if the pumping catheter is in the correct position, the pressure difference between the inlet and outlet of the pumping catheter will fluctuate significantly during a cardiac cycle.

If the blood pumping catheter is in the wrong position, since the inlet and outlet of the pumping catheter are both located in the left ventricle or the aorta, the pressure difference between the inlet and outlet of the pumping catheter is almost 0 in one cardiac cycle, basically No fluctuations.

Fluctuations in the pressure difference between the inlet and outlet of the blood pumping catheter can be reflected in fluctuations in the electrical parameters of the motor that drives the blood pumping catheter. For example, the electrical parameter may be current. When the blood pumping catheter is in the correct position, the pressure difference between the inlet and outlet will fluctuate significantly within a cardiac cycle, and the current of the motor will also fluctuate significantly, as shown in Figure 4a; when the blood pumping catheter is in the wrong position, When , the pressure difference between the inlet and outlet has almost no fluctuation within a cardiac cycle, and the motor current fluctuation amplitude will be very small, as shown in Figure 4b. Therefore, the correct position or the wrong position of the blood pumping catheter can be determined by the fluctuation characteristics of the electric current of the motor. Of course, the correct position or the wrong position of the blood pumping catheter can also be determined by the fluctuation characteristics of other electrical parameters, which are not limited here.

Here, the electrical parameters of the motor at multiple moments within a first duration can be obtained, and the first duration is not less than the duration of one cardiac cycle.

In some implementations, the duration between two adjacent moments may be equal. That is to say, the electrical parameters at multiple times can be obtained at equal intervals. In this way, the fluctuation characteristics of the electrical parameters can be determined more accurately.

Regarding S220, based on the electrical parameters at multiple times, the fluctuation characteristics of the electrical parameters can be determined. The fluctuation characteristics of the electrical parameters can reflect the pressure difference fluctuations at the inlet and outlet of the blood pumping catheter, so that it can be determined whether the blood pumping catheter is in the correct position or in the wrong position.

Regarding S230, if the fluctuation characteristics of the electrical parameters meet the preset fluctuation conditions, it can be determined that the inlet of the blood pumping catheter is located in the left ventricle of the human body and the outlet of the blood pumping catheter is located in the aorta, that is, the correct position. The preset fluctuation condition can be obvious fluctuation. Specifically, a threshold can be set according to the actual situation.

In some embodiments, in order to promptly discover that the blood pumping catheter is in an incorrect position, after S220, the method may further include:

When the fluctuation characteristics do not meet the preset fluctuation conditions, it is determined that the blood pumping catheter is in the wrong position.

Here, if the fluctuation characteristics of the electrical parameters do not meet the preset fluctuation conditions, it can be determined that the inlet and outlet of the blood pumping catheter are both located in the left ventricle or both in the aorta, that is, in the wrong position.

In this way, it can be discovered in time that the blood pumping catheter is in the wrong position, so that timely measures can be taken to protect the patient's life safety.

In some embodiments, in order to more accurately determine whether the blood pumping catheter is in the correct position, S220 may specifically include:

Determine the degree of dispersion of electrical parameters based on the electrical parameters at multiple times;

Based on this, S230 may specifically include:

When the dispersion degree is greater than the preset dispersion degree threshold, it is determined that the blood pumping catheter is in the correct position.

Here, the fluctuation characteristics can be reflected by the degree of dispersion of the electrical parameters, and the degree of dispersion of the electrical parameters can be determined based on the electrical parameters at multiple times. If the degree of dispersion of the electrical parameters is greater than the preset dispersion threshold, it can be shown that the fluctuation characteristics of the electrical parameters satisfy The fluctuation conditions are preset so that it can be determined that the inlet of the pumping catheter is located in the left ventricle and the outlet of the pumping catheter is located in the aorta, that is, the correct position.

In some examples, the degree of dispersion can be determined by calculating the variance. Specifically, the variance of the current can be calculated based on the current values at multiple times; if the variance is greater than the preset variance threshold, it can be determined that the inlet of the blood pumping catheter is located in the left ventricle and the outlet of the blood pumping catheter is located in the aorta, that is, it is correct Location.

The formula for calculating variance is as follows:

Among them, S ² can be the variance, _Xi can be the i-th current value, i=(1,2...n), n can be the number of current values, and X ₀ can be the average of n current values.

In addition, the degree of dispersion can also be determined by calculating the standard deviation. Of course, the degree of dispersion can also be determined by other indicators, which are not limited here.

In this way, it is possible to more accurately determine whether the pumping catheter is in the correct position.

In some embodiments, in order to more accurately determine whether the blood pumping catheter is in the wrong position, when the fluctuation characteristics do not meet the preset fluctuation conditions, determining that the blood pumping catheter is in the wrong position may include:

When the degree of dispersion is not greater than the preset degree of dispersion threshold, it is determined that the blood pumping catheter is in an incorrect position.

Here, if the degree of dispersion of the electrical parameters is not greater than the preset dispersion threshold, it can be indicated that the fluctuation characteristics of the electrical parameters do not meet the preset fluctuation conditions, and thus it can be determined that the inlet and outlet of the blood pumping catheter are both located in the left ventricle or both are located in the aorta. , that is, the wrong location.

In some examples, the variance of the current can be calculated based on the current at multiple moments; if the variance is not greater than the preset variance threshold, it can be determined that both the inlet and outlet of the pumping catheter are located in the left ventricle or both are located in the aorta, that is, Wrong location.

In this way, it is more accurately determined whether the pumping catheter is in the wrong position.

In some embodiments, in order to facilitate the user to promptly discover that the blood pumping catheter is in the wrong position, so as to take timely measures to protect the patient's life safety, after the above-mentioned determination that the blood pumping catheter is in the wrong position, the method may also include:

Generates an alarm signal to indicate that the pump catheter is in the wrong position.

Here, if it is determined that the inlet and outlet of the blood pumping catheter are both located in the left ventricle or the aorta, that is, in wrong positions, an alarm signal can be generated and output to prompt the user that the blood pumping catheter is in the wrong position. The alarm signal may include at least one of text, graphics and sound.

In some examples, when it is determined that the inlet and outlet of the pumping catheter are both located in the left ventricle or both are located in the aorta, a bell alarm may be sounded to indicate that the pumping catheter is in the wrong location.

In this way, it is convenient for users to promptly discover that the blood pumping catheter is in the wrong position and take timely measures. Ensure patient life safety.

Based on the same inventive concept, embodiments of the present application also provide a detection device for a blood pump catheter. The detection device of the blood pump catheter provided by the embodiment of the present application will be described in detail below with reference to FIG. 5 .

Figure 5 shows a schematic structural diagram of a detection device for a blood pump catheter provided by an embodiment of the present application.

As shown in Figure 5, the detection device of the blood pump catheter may include:

The acquisition module 501 is used to acquire the electrical parameters of the motor at multiple moments within a first duration. The motor is used to drive the blood pump catheter to operate. The first duration is not less than the duration of one cardiac cycle;

The first determination module 502 is used to determine the fluctuation characteristics of the electrical parameters based on the electrical parameters at multiple times;

The second determination module 503 is used to determine that the blood pumping catheter is in the correct position when the fluctuation characteristics meet the preset fluctuation conditions.

In some embodiments, in order to promptly detect that the blood pumping catheter is in the wrong position, the detection device of the blood pumping catheter may also include:

The third determination module is configured to determine that the blood pumping catheter is in the wrong position after determining the fluctuation characteristics of the electrical parameters based on the electrical parameters at multiple times and when the fluctuation characteristics do not meet the preset fluctuation conditions.

In some embodiments, in order to facilitate the user to promptly discover that the blood pumping catheter is in the wrong position, so as to take timely measures to protect the patient's life safety, the detection device of the blood pumping catheter may also include:

The generating module is configured to generate an alarm signal to prompt that the blood pumping catheter is in the wrong position after determining that the blood pumping catheter is in the wrong position.

In some embodiments, in order to more accurately determine the fluctuation characteristics of the electrical parameter, the time length between every two adjacent moments is equal.

In some embodiments, in order to more accurately determine whether the blood pumping catheter is in the correct position, the first determination module 502 may be configured to determine the degree of dispersion of the electrical parameters based on the electrical parameters at multiple moments;

The second determination module 503 may be specifically configured to determine that the blood pumping catheter is in the correct position when the degree of dispersion is greater than a preset degree of dispersion threshold.

In some embodiments, in order to more accurately determine whether the blood pumping conduit is in the wrong position, the third determination module may be configured to determine that the blood pumping conduit is in the wrong position when the degree of dispersion is not greater than a preset dispersion threshold.

Figure 6 shows a schematic structural diagram of an electronic device provided by an embodiment of the present application.

As shown in FIG. 6 , the electronic device 6 is capable of implementing the blood pumping catheter detection method and the blood pumping catheter detection device according to the embodiment of the present application. The electronic device may refer to the electronic device in the embodiment of the present application.

The electronic device 6 may include a processor 601 and a memory 602 storing computer program instructions.

Specifically, the above-mentioned processor 601 may include a central processing unit (CPU), or an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), or may be configured to implement one or more integrated circuits according to the embodiments of the present application.

Memory 602 may include bulk storage for data or instructions. By way of example and not limitation, the memory 602 may include a hard disk drive (HDD), a floppy disk drive, flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a Universal Serial Bus (USB) drive or two or more A combination of many of the above. Memory 602 may include removable or non-removable (or fixed) media, where appropriate. Where appropriate, the memory 602 may be internal or external to the integrated gateway disaster recovery device. In certain embodiments, memory 602 is non-volatile solid-state memory. In certain embodiments, memory 602 may include read only memory (ROM), random access memory (RAM), magnetic disk storage media devices, optical storage media devices, flash memory devices, electrical, optical, or other physical/tangible memory storage devices . Thus, generally, memory 602 includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software including computer-executable instructions, and when the software is executed (e.g., by a or multiple processors) that is operable to perform the execution of a reference in accordance with this Apply one aspect of the method to the operations described.

The processor 601 reads and executes the computer program instructions stored in the memory 602 to implement any of the blood pumping catheter detection methods in the above embodiments.

In one example, the electronic device may also include a communication interface 603 and a bus 604. Among them, as shown in Figure 6, the processor 601, the memory 602, and the communication interface 603 are connected through the bus 604 and complete communication with each other.

The communication interface 603 is mainly used to implement communication between modules, devices, units and/or equipment in the embodiments of this application.

Bus 604 includes hardware, software, or both, coupling the components of the electronic device to each other. By way of example, and not limitation, buses may include Accelerated Graphics Port (AGP) or other graphics buses, Enhanced Industry Standard Architecture (EISA) bus, Front Side Bus (FSB), HyperTransport (HT) interconnect, Industry Standard Architecture (ISA) Bus, Infinite Bandwidth Interconnect, Low Pin Count (LPC) Bus, Memory Bus, Micro Channel Architecture (MCA) Bus, Peripheral Component Interconnect (PCI) Bus, PCI-Express (PCI-X) Bus, Serial Advanced Technology Attachment (SATA) bus, Video Electronics Standards Association Local (VLB) bus or other suitable bus or a combination of two or more of these. Where appropriate, bus 404 may include one or more buses. Although the embodiments of this application describe and illustrate a specific bus, this application contemplates any suitable bus or interconnection.

The electronic device can execute the blood pumping catheter detection method in the embodiment of the present application, thereby realizing the blood pumping catheter detection method and device described in conjunction with FIGS. 1 to 5 .

In addition, combined with the detection method of the blood pumping catheter in the above embodiment, the embodiment of the present application can provide a computer storage medium for implementation. The computer storage medium stores computer program instructions; when the computer program instructions are executed by the processor, any one of the blood pumping catheter detection methods in the above embodiments is implemented.

To be clear, this application is not limited to the specific configurations and processes described above and illustrated in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present application is not limited to the specific steps described and illustrated. Those skilled in the art can make various changes, modifications and additions, or change the order between steps after understanding the spirit of the present application.

The functional blocks shown in the structural block diagram described above can be implemented as hardware, software, firmware or or their combination. When implemented in hardware, it may be, for example, an electronic circuit, an application specific integrated circuit (ASIC), appropriate firmware, a plug-in, a function card, or the like. When implemented in software, elements of the application are programs or code segments that are used to perform the required tasks. The program or code segments may be stored in a machine-readable medium or transmitted over a transmission medium or communications link via a data signal carried in a carrier wave. "Machine-readable medium" may include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio frequency (RF) links, and the like. Code segments may be downloaded via computer networks such as the Internet, intranets, and the like.

It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. However, the present application is not limited to the order of the above steps. That is to say, the steps may be performed in the order mentioned in the embodiment, or may be different from the order in the embodiment, or several steps may be performed simultaneously.

Aspects of the present application are described above with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine such that execution of the instructions via the processor of the computer or other programmable data processing apparatus enables Implementation of the functions/actions specified in one or more blocks of a flowchart and/or block diagram. Such a processor may be, but is not limited to, a general-purpose processor, a special-purpose processor, a special application processor, or a field-programmable logic circuit. It will also be understood that each block in the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can also be implemented by special purpose hardware that performs the specified functions or actions, or can be implemented by special purpose hardware and A combination of computer instructions.

The above are only specific implementation modes of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the above-described systems, modules and units can be referred to the foregoing method embodiments. The corresponding process will not be described again here. It should be understood that the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of various equivalent modifications or substitutions within the technical scope disclosed in the present application. These modifications Any modification or replacement shall be covered by the protection scope of this application.

Claims

A method for detecting blood pumping catheters, the method includes:

Obtain electrical parameters of a motor used to drive a blood pumping catheter to operate at multiple moments within a first duration, where the first duration is not less than the duration of one cardiac cycle;

Determine the fluctuation characteristics of the electrical parameters according to the electrical parameters at the multiple moments;

When the fluctuation characteristics meet the preset fluctuation conditions, it is determined that the blood pumping catheter is in the correct position.
The method according to claim 1, after determining the fluctuation characteristics of the electrical parameters based on the electrical parameters at the plurality of moments, the method further includes:

When the fluctuation characteristics do not meet the preset fluctuation conditions, it is determined that the blood pumping conduit is located in an incorrect position.
The method of claim 2, after determining that the pumping catheter is in an incorrect position, the method further includes:

An alarm signal is generated to indicate that the pumping catheter is in the wrong position.
The method according to claim 1, wherein the duration between every two adjacent moments is equal.
The method according to claim 2, wherein determining the fluctuation characteristics of the electrical parameters according to the electrical parameters at the plurality of moments includes:

Determine the degree of dispersion of the electrical parameters according to the electrical parameters at the multiple moments;

When the fluctuation characteristics meet the preset fluctuation conditions, determining that the blood pumping catheter is in the correct position includes:

When the degree of dispersion is greater than the preset degree of dispersion threshold, it is determined that the blood pumping catheter is in the correct position.
The method according to claim 5, wherein determining that the blood pumping catheter is in an incorrect position when the fluctuation characteristics do not meet preset fluctuation conditions includes:

When the degree of dispersion is not greater than the preset degree of dispersion threshold, it is determined that the blood pumping catheter is located in an incorrect position.
A detection system for a blood pumping catheter, the system includes a blood pumping catheter, a motor and a controller;

The blood pumping conduit is connected to the motor;

The motor is connected to the controller and used to drive the blood pumping catheter to operate;

The controller is used to obtain the electrical parameters of the motor at multiple moments within a first duration, and the motor is used to drive the blood pumping catheter to operate. The first duration is not less than the duration of one cardiac cycle. According to the multiple times, The electrical parameters at each moment are determined to determine the fluctuation characteristics of the electrical parameters. When the fluctuation characteristics meet the preset fluctuation conditions, it is determined that the blood pumping catheter is in the correct position.
A detection device for a blood pumping catheter, the device includes:

The acquisition module is used to acquire the electrical parameters of the motor used to drive the blood pumping catheter to operate at multiple moments within a first duration, and the first duration is not less than the duration of one cardiac cycle;

A first determination module, configured to determine the fluctuation characteristics of the electrical parameters based on the electrical parameters at the multiple moments;

The second determination module is used to determine that the blood pumping catheter is in the correct position when the fluctuation characteristics meet the preset fluctuation conditions.
The device of claim 8, further comprising:

The third determination module is configured to determine that the blood pumping catheter is in an incorrect position when the fluctuation characteristics do not meet the preset fluctuation conditions.
The device of claim 9, further comprising:

A generating module, configured to generate an alarm signal to prompt that the blood pumping conduit is located in an incorrect position after it is determined that the blood pumping conduit is located in an incorrect position.
The device according to claim 8, wherein the duration between every two adjacent moments is equal.
The device of claim 9, wherein:

The first determination module is specifically configured to determine the degree of dispersion of the electrical parameters based on the electrical parameters at the multiple moments;

The second determination module is specifically configured to determine that the blood pumping catheter is in the correct position when the degree of dispersion is greater than a preset degree of dispersion threshold.
The device of claim 12, wherein:

The third determination module is specifically configured to determine that the blood pumping catheter is in an incorrect position when the degree of dispersion is not greater than a preset degree of dispersion threshold.
An electronic device, characterized in that the device includes: a processor and a memory storing computer program instructions;

When the processor executes the computer program instructions, it implements: obtaining the electrical parameters of the motor at multiple moments within a first duration, the motor is used to drive the blood pumping catheter to operate, and the first duration is not less than one cardiac cycle. duration,

Determine the fluctuation characteristics of the electrical parameters based on the electrical parameters at the multiple moments,

When the fluctuation characteristics meet the preset fluctuation conditions, it is determined that the blood pumping catheter is in the correct position.
A computer storage medium, characterized in that computer program instructions are stored on the computer storage medium. When the computer program instructions are executed by a processor, the following are achieved: obtaining the electrical parameters of the motor at multiple moments within a first duration, so The motor is used to drive the blood pumping catheter to operate, and the first duration is not less than the duration of one cardiac cycle,

Determine the fluctuation characteristics of the electrical parameters based on the electrical parameters at the multiple moments,

When the fluctuation characteristics meet the preset fluctuation conditions, it is determined that the blood pumping catheter is in the correct position.
A computer program product, characterized in that, when instructions in the computer program product are executed by a processor of an electronic device, the electronic device obtains electrical parameters of a motor at multiple moments within a first period of time, and the motor Used to drive the operation of the blood pumping catheter, the first duration is not less than the duration of one cardiac cycle,

Determine the fluctuation characteristics of the electrical parameters based on the electrical parameters at the multiple moments,

When the fluctuation characteristics meet the preset fluctuation conditions, it is determined that the blood pumping catheter is in the correct position.