CN-121971799-A - Impeller state detection method, blood pump, device, electronic apparatus, and storage medium

Abstract

The application provides an impeller state detection method, a blood pump, a device, an electronic device and a storage medium. The method is applied to a blood pump, the blood pump is a full-magnetic suspension blood pump, the blood pump comprises a pump head assembly and a driving assembly, the pump head assembly comprises a pump shell and an impeller which can be completely suspended in the pump shell, the driving assembly is connected with the pump head assembly, the driving assembly magnetically drives the impeller to operate in the pump shell, the method comprises the steps of acquiring a mechanical wave signal generated when the impeller collected by a sensor operates during the working period of the blood pump, and outputting alarm information corresponding to an abnormal operation event under the condition that the abnormal operation event of the impeller is detected based on the mechanical wave signal. By adopting the application, the abnormal condition of unstable operation of the impeller in the early stage can be effectively identified as early as possible and timely alarm is realized, the risk of unstable supporting flow, pump body damage or hemolysis caused by continuous abnormal operation of the impeller is reduced, and the safety and reliability of the operation of the blood pump are improved.

Inventors

• ZHANG WEIBO

Assignees

• 心擎医疗（苏州）股份有限公司

Dates

Publication Date

20260505

Application Date

20260130

Claims (15)

1. 1. A method of detecting the condition of an impeller, the method being applied to a blood pump, the blood pump comprising a pump head assembly and a drive assembly, the pump head assembly comprising a pump housing and an impeller capable of being suspended entirely within the pump housing, the drive assembly being connected to the pump head assembly, the drive assembly being capable of driving the impeller to operate within the pump housing, the method comprising: during the operation of the blood pump, acquiring a mechanical wave signal acquired by a sensor and generated when the impeller operates; And outputting alarm information corresponding to the abnormal operation event when the abnormal operation event of the impeller is detected based on the mechanical wave signal.
2. 2. The impeller state detection method according to claim 1, wherein the abnormal operation event includes at least one of a first event that the impeller is eccentrically operated within the pump casing and a second event that the impeller collides with the pump casing; And/or the blood pump is a full-magnetic suspension blood pump, and the driving assembly can magnetically drive the impeller to run in the pump shell.
3. 3. The impeller state detection method according to claim 1, characterized in that the method further comprises: Detecting whether the mechanical wave signal indicates the occurrence of the abnormal operation event of the impeller, the mechanical wave signal including an acoustic signal and/or a vibration signal; Outputting alarm information corresponding to an abnormal operation event when the abnormal operation event of the impeller is detected based on the mechanical wave signal, wherein the alarm information comprises: Outputting the alarm information when the sound signal is detected to indicate the abnormal operation event of the impeller, or Outputting the alarm information when the vibration signal is detected to indicate the abnormal operation event of the impeller, or And outputting the alarm information when the sound signal and the vibration signal are detected to indicate that the impeller has abnormal operation event.
4. 4. The method for detecting the state of an impeller according to claim 3, wherein, The detecting whether the mechanical wave signal indicates the occurrence of the abnormal operation event of the impeller includes: determining component signals corresponding to the sound signals in a plurality of frequency bands; acquiring reference characteristic data corresponding to each of the plurality of frequency bands, wherein the reference characteristic data is used for representing audio characteristics corresponding to the abnormal operation event; detecting based on the component signals corresponding to the frequency bands and the reference characteristic data corresponding to the frequency bands, so as to obtain a first detection result, wherein the first detection result is used for indicating whether the impeller generates the abnormal operation event or not; or said detecting whether said mechanical wave signal indicates said abnormal operation event of said impeller, comprising: Extracting sound characteristics of the sound signals, inputting the sound characteristics into a trained machine learning model, and outputting a first detection result, wherein the first detection result is used for indicating whether the impeller generates the abnormal operation event or not; The training samples of the machine learning model comprise positive samples and negative samples, wherein the positive samples are sound sample data generated when the impeller operates normally, and the negative samples are sound sample data generated when the impeller operates abnormally; or said detecting whether said mechanical wave signal indicates said abnormal operation event of said impeller, comprising: Acquiring vibration characteristic data corresponding to the vibration signals; and detecting based on the vibration signal and the vibration characteristic data to obtain a second detection result, wherein the second detection result is used for indicating whether the abnormal operation event occurs to the impeller.
5. 5. The method of claim 4, wherein the determining based on the component signals corresponding to the plurality of frequency bands and the reference feature data corresponding to the plurality of frequency bands to obtain the first detection result includes: for a first frequency band in the plurality of frequency bands, judging whether the component signals of the first frequency band accord with a first audio feature condition or not based on the component signals of the first frequency band and reference feature data corresponding to the first frequency band, and obtaining a first judgment result; for a second frequency band in the plurality of frequency bands, judging whether the component signals of the second frequency band accord with a second audio characteristic condition or not based on the component signals of the second frequency band and the reference characteristic data corresponding to the second frequency band, and obtaining a second judgment result corresponding to the second frequency band; And determining that the first detection result is the abnormal running event of the impeller under the condition that the first judgment result indicates that the component signal of the first frequency band accords with a first audio characteristic condition and/or the second judgment result indicates that the component signal of the second frequency band accords with a second audio characteristic condition.
6. 6. The impeller state detection method according to claim 5, characterized in that the reference characteristic data includes a sound intensity threshold; The first audio feature condition includes: the first sound intensity difference value corresponding to the first frequency band is larger than or equal to a first threshold value; The first sound intensity difference value refers to a difference value that the sound intensity of the first frequency band exceeds a sound intensity threshold value corresponding to the first frequency band, and the sound intensity of the first frequency band is determined based on the component signals of the first frequency band; The second audio feature condition includes: the second sound intensity difference value corresponding to the second frequency band is larger than or equal to a second threshold value; The second sound intensity difference is a difference that the sound intensity of the second frequency band exceeds a sound intensity threshold corresponding to the second frequency band, and the sound intensity of the second frequency band is determined based on the component signals of the second frequency band; preferably, the first frequency band is a sound frequency band which can be acquired in the plurality of frequency bands, the second frequency band is a specific sound frequency band in the plurality of frequency bands, and the second threshold is greater than the first threshold.
7. 7. The impeller state detection method according to claim 5, characterized in that the reference characteristic data includes a sound intensity threshold; The first audio feature condition includes: The sound intensity of the first frequency band is greater than or equal to a sound intensity threshold corresponding to the first frequency band; The second audio feature condition includes: and the sound intensity of the second frequency band is greater than or equal to a sound intensity threshold corresponding to the second frequency band.
8. 8. The impeller state detection method according to claim 4, wherein the vibration signal includes a vibration acceleration signal detected at least one position of the pump head assembly, the detection based on the vibration signal and the vibration characteristic data, obtaining a second detection result, comprising: Determining vibration acceleration corresponding to each of the at least one position based on the vibration acceleration signal; Comparing the vibration acceleration detected at each position with an acceleration threshold value to obtain an acceleration comparison result corresponding to each position, wherein the vibration characteristic data comprise the acceleration threshold value; And if any acceleration comparison result indicates that the vibration acceleration is greater than or equal to the acceleration threshold value, determining that the second detection result is that the abnormal operation event occurs to the impeller.
9. 9. The impeller state detection method according to claim 1, characterized in that the method further comprises: acquiring operation data of the driving assembly; detecting whether the operational data indicates that the impeller has the abnormal operational event; Outputting alarm information corresponding to an abnormal operation event when the abnormal operation event of the impeller is detected based on the mechanical wave signal, wherein the alarm information comprises: outputting alarm information corresponding to an abnormal operation event under the condition that the mechanical wave signal and the operation data indicate the abnormal operation event of the impeller; preferably, the operation data comprises sensing data of a plurality of operation parameters generated when the driving assembly works, and the detecting whether the operation data indicates the abnormal operation event of the impeller comprises: Acquiring parameter characteristic data corresponding to each of the plurality of working parameters, wherein the parameter characteristic data is used for representing the operation working condition characteristics of the driving assembly when the abnormal operation event occurs; For each working parameter, judging whether the sensing data corresponding to the working parameter accords with the early warning condition corresponding to the working parameter or not based on the sensing data corresponding to the working parameter and the parameter characteristic data corresponding to the working parameter, and obtaining a judging result corresponding to the working parameter; determining a third detection result based on the judgment result corresponding to each working parameter, wherein the third detection result is used for indicating whether the abnormal operation event occurs to the impeller; preferably, the plurality of operating parameters includes at least two of: motor current, magnetic suspension control current, total current of driving components and position deviation of a pump head; The early warning condition corresponding to the motor current comprises that motor current data is larger than or equal to a motor current threshold value; The early warning condition corresponding to the magnetic suspension control current comprises that the magnetic suspension control current is larger than or equal to a magnetic suspension control current threshold value; the early warning condition corresponding to the total current of the driving assembly comprises that the total current of the driving assembly is larger than or equal to a total current threshold value of the driving assembly; The early warning conditions corresponding to the pump head position deviation comprise that the pump head position deviation data is more than or equal to a position deviation threshold value; The determining a third detection result based on the judgment result corresponding to each working parameter includes: And under the condition that the judging result corresponding to at least one working parameter indicates that the working parameter accords with the corresponding early warning condition, determining that the third detecting result is the abnormal running event of the impeller.
10. 10. The impeller state detection method according to claim 3, wherein the sensor includes a microphone for collecting the sound signal and/or an acceleration sensor for collecting the vibration signal; preferably, the blood pump is an extracorporeal blood pump, and the pump shell is provided with a sound insulation component; The sound signal is collected by the microphone disposed at the sound isolation assembly; preferably, the sound insulation component is a sound insulation sucker adsorbed to the pump shell.
11. 11. The method for detecting the state of an impeller according to any one of claims 1 to 10, wherein, The pump head assembly is a standard pump head assembly, the driving assembly is a tested driving assembly, and when the abnormal operation event of the impeller is detected based on the mechanical wave signal, a detection result indicating that the tested driving assembly does not pass the detection is output, or The pump head assembly is a pump head assembly to be detected, the driving assembly is a standard driving assembly, and a detection result indicating that the pump head assembly to be detected does not pass through is output under the condition that the abnormal operation event of the impeller is detected based on the mechanical wave signal; Preferably, the method further comprises: randomly selecting alternative parts from the centrifugal pumps of a plurality of batches and the pump heads of a plurality of batches respectively to obtain alternative centrifugal pumps and alternative pump heads; pairing the alternative centrifugal pumps and the alternative pump heads in pairs to form a plurality of pairs of test combinations; The operation test is carried out on a plurality of groups of blood pumps formed by each pair of test combinations at different rotating speeds to obtain test results, wherein the operation test comprises the steps of acquiring mechanical wave signals generated when impellers of alternative pump heads operate and/or operation data of alternative centrifugal pumps during the operation of the blood pumps, and detecting whether the mechanical wave signals and the operation data indicate whether abnormal operation events occur to the impellers or not; based on all test results, at least one standard centrifugal pump and at least one standard pump head are selected to obtain the standard drive assembly and the standard pump head assembly.
12. 12. The impeller state detection device is characterized by being applied to a blood pump, wherein the blood pump comprises a pump head assembly and a driving assembly, the pump head assembly comprises a pump shell and an impeller which can be completely suspended in the pump shell, the driving assembly is connected with the pump head assembly, and the driving assembly can drive the impeller to run in the pump shell; The device comprises: the communication module is used for acquiring a mechanical wave signal acquired by the sensor and generated when the impeller runs during the working period of the blood pump; the processing module is used for outputting alarm information corresponding to the abnormal operation event when the abnormal operation event of the impeller is detected based on the mechanical wave signal; Preferably, the abnormal operation event includes at least one of a first event that the impeller eccentrically operates within the pump casing and a second event that the impeller collides with the pump casing.
13. 13. An electronic device comprising a processor, a memory and an executable program stored on the memory and executable by the processor, wherein the processor performs the steps of the impeller state detection method of any one of claims 1 to 11 when the executable program is run by the processor.
14. 14. A blood pump, the blood pump comprising: A pump head assembly comprising a pump housing and an impeller capable of being fully suspended within the pump housing; The driving assembly is connected with the pump head assembly and can drive the impeller to run in the pump shell; A sensor for acquiring a mechanical wave signal generated when the impeller is operated during operation of the blood pump; the impeller state detection apparatus according to claim 12, or the electronic device according to claim 13; preferably, the blood pump is an extracorporeal blood pump, the sensor is attached to the surface of the pump shell, or the blood pump is an intracorporal blood pump, and the sensor is arranged in the blood pump; preferably, the mechanical wave signal comprises an acoustic signal and/or a vibration signal, and the sensor comprises: a microphone for capturing the sound signal, and/or, The acceleration sensor is used for acquiring the vibration signal; preferably, the microphone is provided with a sound-insulating suction cup capable of being sucked to the pump housing.
15. 15. A storage medium having stored thereon an executable program, wherein the executable program when executed by a processor implements the steps of the impeller condition detection method according to any one of claims 1 to 11.

Description

Impeller state detection method, blood pump, device, electronic apparatus, and storage medium Technical Field The present application relates to the technical field of medical devices, and in particular, to a method for detecting an impeller state, a blood pump, a device, an electronic apparatus, and a storage medium. Background Centrifugal blood pumps are one of blood pumps for supporting the function of the heart of a patient, and impellers as a core rotating member of the centrifugal blood pump, the stable operation of which is critical to the safety and blood compatibility of the blood pump. Especially for the full-magnetic suspension blood pump, the impeller can be completely suspended in the pump shell to rotate, once the impeller is unstable in operation, abnormal events such as eccentricity and even shell collision easily occur, the flow of the blood pump is unstable, and even damage to blood cells is increased. Whether an implantable in-vivo blood pump or an implantable in-vitro blood pump, the impeller is positioned in a closed pump shell and is shielded by blood or a body, and a clinical operator cannot directly observe the running state of the impeller through vision. Even in the test before the impeller leaves the factory, it is difficult for a tester to directly visually observe whether the impeller is operating normally at the center position. In the related art, if the impeller is unstable in operation, noise usually occurs, so that noise judgment is performed manually, corresponding marks are made, but the mode of manually judging the noise is high in subjectivity, and errors or misjudgment are easy to occur. Disclosure of Invention In view of the above, the present application provides an impeller status detection method, a blood pump, a device, an electronic apparatus, and a storage medium for solving at least one of the problems in the background art. In a first aspect, an embodiment of the present application provides a method for detecting an impeller status, the method being applied to a blood pump, the blood pump including a pump head assembly and a driving assembly, the pump head assembly including a pump housing and an impeller capable of being completely suspended in the pump housing, the driving assembly being connected to the pump head assembly, the driving assembly being capable of driving the impeller to operate in the pump housing, the method comprising: during the operation of the blood pump, acquiring a mechanical wave signal acquired by a sensor and generated when the impeller operates; And outputting alarm information corresponding to the abnormal operation event when the abnormal operation event of the impeller is detected based on the mechanical wave signal. In a second aspect, an embodiment of the present application provides an impeller status detection apparatus, where the apparatus is applied to a blood pump, where the blood pump includes a pump head assembly and a driving assembly, where the pump head assembly includes a pump casing and an impeller that can be completely suspended in the pump casing, and the driving assembly is connected to the pump head assembly, and the driving assembly can drive the impeller to operate in the pump casing; The device comprises: the communication module is used for acquiring a mechanical wave signal acquired by the sensor and generated when the impeller runs during the working period of the blood pump; and the processing module is used for outputting alarm information corresponding to the abnormal operation event when the abnormal operation event of the impeller is detected based on the mechanical wave signal. In some embodiments, the abnormal operation event includes at least one of a first event and a second event, the first event being an event in which the impeller is eccentrically operated within the pump casing, the second event being an event in which the impeller collides with the pump casing. In a third aspect, an embodiment of the present application provides an electronic device, including a processor, a memory, and an executable program stored on the memory and capable of being executed by the processor, where the processor executes the executable program to perform the steps of the impeller state detection method as provided in any embodiment of the first aspect. In a fourth aspect, embodiments of the present application provide a blood pump, the blood pump comprising: A pump head assembly comprising a pump housing and an impeller capable of being fully suspended within the pump housing; The driving assembly is connected with the pump head assembly and can drive the impeller to run in the pump shell; A sensor for acquiring a mechanical wave signal generated when the impeller is operated during operation of the blood pump; the impeller state detection apparatus as provided by any one of the embodiments of the second aspect, or the electronic device as provided by the third aspect. In some embodiments, the blood pump is