CN117258137B - Rotational speed self-adaptive control method and device for ventricular catheter pump - Google Patents
Rotational speed self-adaptive control method and device for ventricular catheter pump Download PDFInfo
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- 230000002861 ventricular Effects 0.000 title claims abstract description 149
- 238000000034 method Methods 0.000 title claims abstract description 38
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- 238000012549 training Methods 0.000 claims description 31
- 230000000875 corresponding effect Effects 0.000 claims description 26
- 230000003247 decreasing effect Effects 0.000 claims description 6
- 230000002596 correlated effect Effects 0.000 claims description 5
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- 206010018910 Haemolysis Diseases 0.000 description 1
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- 208000007536 Thrombosis Diseases 0.000 description 1
- 206010053648 Vascular occlusion Diseases 0.000 description 1
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/10—Location thereof with respect to the patient's body
- A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
- A61M60/165—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable in, on, or around the heart
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/20—Type thereof
- A61M60/205—Non-positive displacement blood pumps
- A61M60/216—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
- A61M60/226—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller the blood flow through the rotating member having mainly radial components
- A61M60/232—Centrifugal pumps
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/20—Type thereof
- A61M60/205—Non-positive displacement blood pumps
- A61M60/216—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
- A61M60/237—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller the blood flow through the rotating member having mainly axial components, e.g. axial flow pumps
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/40—Details relating to driving
- A61M60/403—Details relating to driving for non-positive displacement blood pumps
- A61M60/408—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being mechanical, e.g. transmitted by a shaft or cable
- A61M60/411—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being mechanical, e.g. transmitted by a shaft or cable generated by an electromotor
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/40—Details relating to driving
- A61M60/403—Details relating to driving for non-positive displacement blood pumps
- A61M60/422—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being electromagnetic, e.g. using canned motor pumps
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
- A61M60/50—Details relating to control
- A61M60/508—Electronic control means, e.g. for feedback regulation
- A61M60/538—Regulation using real-time blood pump operational parameter data, e.g. motor current
Abstract
The embodiment of the application provides a rotational speed self-adaptive control method and device of a ventricular catheter pump, and belongs to the technical field of medical equipment. The method comprises the following steps: determining a target rotating speed corresponding to a target gear input by a user, and adjusting the rotating speed of the ventricular catheter pump according to the target rotating speed; determining a rotational speed variation relationship characterizing a time sequence fluctuation condition of an actual rotational speed of the ventricular catheter pump in the adjusting process; predicting the rotation speed of the ventricular catheter pump based on the rotation speed change relation, the physiological parameter of the target object aimed by the ventricular catheter pump and a preset prediction model to obtain a predicted rotation speed; and controlling the operation of the ventricular catheter pump according to the predicted rotating speed. By adopting the method and the device, the self-adaptive control of the rotating speed of the ventricular catheter pump can be realized, so that the control accuracy is improved.
Description
Technical Field
The application relates to the technical field of medical equipment, in particular to a rotational speed self-adaptive control method and device of a ventricular catheter pump.
Background
Ventricular catheter pumps are devices that provide support or assist functions for patients suffering from heart related diseases, such as heart failure, to assist the heart in pumping blood to other parts of the body.
The main problem with ventricular catheter pumps is control. The control is reasonable, so that the ventricular unloading is facilitated, and the cardiac output, the pulse pressure difference and the blood flow pulsatility are satisfied; abnormal conditions such as aspiration, thrombosis, hemolysis, etc. may occur when the control is improper. Thus, there is a need for a rotational speed scheme for a ventricular catheter pump that enables adaptive control.
Disclosure of Invention
An object of the embodiments of the present application is to provide a method and an apparatus for adaptively controlling a rotational speed of a ventricular catheter pump, so as to achieve adaptive control of the ventricular catheter pump and improve accuracy thereof. The specific technical scheme is as follows:
in a first aspect, there is provided a method of adaptively controlling a rotational speed of a ventricular catheter pump, the method comprising:
determining a target rotating speed corresponding to a target gear input by a user, and adjusting the rotating speed of the ventricular catheter pump according to the target rotating speed;
determining a rotational speed variation relationship characterizing a time sequence fluctuation condition of an actual rotational speed of the ventricular catheter pump in the adjusting process;
predicting the rotation speed of the ventricular catheter pump based on the rotation speed change relation, the physiological parameter of the target object aimed by the ventricular catheter pump and a preset prediction model to obtain a predicted rotation speed;
and controlling the operation of the ventricular catheter pump according to the predicted rotating speed.
In one embodiment of the present application, the controlling the operation of the ventricular catheter pump according to the predicted rotation speed includes:
determining a gear corresponding to the predicted rotating speed as a predicted gear;
judging whether the predicted gear is the same as the target gear;
if so, determining the predicted rotating speed as a first control parameter, and controlling the operation of the ventricular catheter pump according to the first control parameter.
In one embodiment of the present application, if the predicted gear is different from the target gear, the method further includes:
indicating a predicted gear to the user such that the user determines a second control parameter based on the predicted gear;
and acquiring a second control parameter determined by the user, and controlling the operation of the ventricular catheter pump according to the second control parameter.
In one embodiment of the present application, the controlling the operation of the ventricular catheter pump according to the predicted rotation speed includes:
calculating a rotation speed difference between the predicted rotation speed and a target rotation speed, and determining rotation speed adjustment times based on the rotation speed difference, wherein the rotation speed adjustment times and the rotation speed difference are positively correlated;
calculating a single rotation speed adjustment amount based on the rotation speed difference and the rotation speed adjustment times;
and controlling the rotation speed of the ventricular catheter pump according to the rotation speed adjustment times and the single rotation speed adjustment quantity so as to enable the rotation speed of the ventricular catheter pump to reach the predicted rotation speed.
In an embodiment of the present application, predicting, based on the rotation speed change relationship, the physiological parameter of the target object to which the ventricular catheter pump is directed, and a preset prediction model, the rotation speed of the ventricular catheter pump adapted to the current situation of the target object as the predicted rotation speed includes:
obtaining a plurality of sets of training parameters, each set of training parameters comprising: sample rotation speed change relation, sample physiological parameters and sample required rotation speed;
training an initial prediction model by adopting the plurality of groups of training parameters, and determining a model after training as a prediction model;
and inputting the rotation speed change relation and the physiological parameter of the target object aimed by the ventricular catheter pump into the prediction model to obtain the rotation speed output by the prediction model as the predicted rotation speed.
In a second aspect, there is provided a rotational speed adaptive control apparatus for a ventricular catheter pump, the apparatus comprising:
the rotation speed adjusting module is used for determining a target rotation speed corresponding to a target gear input by a user and adjusting the rotation speed of the ventricular catheter pump according to the target rotation speed;
the rotating speed change determining module is used for determining a rotating speed change relation of time sequence fluctuation conditions representing the actual rotating speed of the ventricular catheter pump in the adjusting process;
the rotating speed prediction module is used for predicting the rotating speed of the ventricular catheter pump based on the rotating speed change relation, the physiological parameter of the target object aimed by the ventricular catheter pump and a preset prediction model to obtain a predicted rotating speed;
and the rotating speed control module is used for controlling the operation of the ventricular catheter pump according to the predicted rotating speed.
In one embodiment of the present application, the above-mentioned rotational speed control module is specifically configured to determine a gear corresponding to the predicted rotational speed as a predicted gear; judging whether the predicted gear is the same as the target gear; if so, determining the predicted rotating speed as a first control parameter, and controlling the operation of the ventricular catheter pump according to the first control parameter.
In one embodiment of the present application, if the predicted gear is different from the target gear, the rotational speed control module is further specifically configured to indicate the predicted gear to the user, so that the user determines a second control parameter based on the predicted gear; and acquiring a second control parameter determined by the user, and controlling the operation of the ventricular catheter pump according to the second control parameter.
In one embodiment of the present application, the above-mentioned rotational speed control module is specifically configured to calculate a rotational speed difference between the predicted rotational speed and the target rotational speed, and determine a rotational speed adjustment number based on the rotational speed difference, where the rotational speed adjustment number is positively correlated with the rotational speed difference; calculating a single rotation speed adjustment amount based on the rotation speed difference and the rotation speed adjustment times; and controlling the rotation speed of the ventricular catheter pump according to the rotation speed adjustment times and the single rotation speed adjustment quantity so as to enable the rotation speed of the ventricular catheter pump to reach the predicted rotation speed.
In an embodiment of the present application, the rotation speed prediction module is specifically configured to obtain multiple sets of training parameters, where each set of training parameters includes: sample rotation speed change relation, sample physiological parameters and sample required rotation speed; training an initial prediction model by adopting the plurality of groups of training parameters, and determining a model after training as a prediction model; and inputting the rotation speed change relation and the physiological parameter of the target object aimed by the ventricular catheter pump into the prediction model to obtain the rotation speed output by the prediction model as the predicted rotation speed.
In a third aspect, an electronic device is provided, including a processor, a communication interface, a memory, and a communication bus, where the processor, the communication interface, and the memory complete communication with each other through the communication bus;
a memory for storing a computer program;
and a processor, configured to implement the method steps described in the first aspect when executing the program stored in the memory.
In a fourth aspect, a computer-readable storage medium is provided, in which a computer program is stored which, when being executed by a processor, carries out the method steps according to the first aspect
From the above, it can be seen that, by applying the scheme provided by the embodiment of the application, the rotation speed of the ventricular catheter pump is predicted by the prediction model based on the rotation speed change relation and the physiological parameter, and the time sequence change condition of the actual rotation speed of the ventricular catheter pump is reflected by the rotation speed change relation, so that the current equipment characteristic of the ventricular catheter pump can be reflected by the time sequence change condition of the actual rotation speed of the ventricular catheter pump, and the current physiological condition of the target object can be reflected by the physiological parameter.
Of course, it is not necessary for any of the products or methods of the present application to be practiced with all of the advantages described above.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an axial flow pump according to an embodiment of the present disclosure;
fig. 2 is a flow chart of a method for adaptively controlling a rotational speed of a first ventricular catheter pump according to an embodiment of the present disclosure;
fig. 3 is a flowchart of a second method for adaptively controlling a rotational speed of a ventricular catheter pump according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a rotational speed adaptive control device of a ventricular catheter pump according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
The ventricular catheter pumps of the present application may be attached to the apex of the left ventricle, the right ventricle, or both ventricles of the heart. The ventricular catheter pump may be an axial flow pump, a centrifugal pump, or a magnetic suspension pump.
The structure of the ventricular catheter pump will be described below with reference to fig. 1 by taking an axial flow pump as an example. Fig. 1 shows a schematic structural diagram of an axial flow pump, which comprises a pig tail pipe 106, a blood inflow port 105, a blood flow channel 104, a blood outflow port 103, a motor housing 102 and a catheter 101 which are sequentially connected and fixed, wherein a motor is installed in the motor housing 102, and a rotating shaft of the motor penetrates through the motor housing and is fixedly connected with an axial flow impeller in the blood flow channel 104.
The motor drives the axial flow impeller to rotate, and under this driving action, blood in the heart flows in from the blood inflow port 105, passes through the blood flow path 104, and flows out from the blood outflow port 103.
In the configuration shown in fig. 1, the motor is located within the heart when the ventricular catheter pump is placed in the patient. In addition to this structure, the motor can be connected with the impeller through the flexible driving shaft, so that when the ventricular catheter pump is placed in the patient, the motor is positioned outside the heart, thereby reducing the size of the ventricular catheter pump, and the motor drives the impeller to rotate through the flexible driving shaft, so that the auxiliary blood pumping function of the ventricular catheter pump is realized.
The subject of execution of embodiments of the present application may be a control device of the ventricular catheter pump for detecting relevant parameters of the ventricular catheter pump/patient and controlling the operation of the ventricular catheter pump.
The following specifically describes a method for adaptively controlling the rotational speed of the ventricular catheter pump according to the embodiment of the present application.
Referring to fig. 2, fig. 2 is a flow chart of a method for adaptively controlling a rotational speed of a first ventricular catheter pump according to an embodiment of the present application, where the method includes the following steps S201 to S204.
Step S201: and determining a target rotating speed corresponding to the target gear input by the user, and adjusting the rotating speed of the ventricular catheter pump according to the target rotating speed.
The user may be a healthcare worker.
The control device of a ventricular catheter pump generally has a plurality of gears, each gear corresponding to a rotational speed range: a rotational speed range of fixed amplitude fluctuating up and down around the central rotational speed. The higher the gear, the faster the rotational speed. Based on the above, the medical staff can input the gear on the user interface provided by the control device, the input gear is the target gear, and the central rotating speed of the rotating speed range corresponding to the input gear is the target rotating speed.
Specifically, when the control device detects the target gear input by the user, the control device may determine, as the target rotation speed, the center rotation speed corresponding to the target gear based on the correspondence between the gear and the center rotation speed.
When the rotation speed of the ventricular catheter pump is regulated, a preset rotation speed regulation mode can be adopted to regulate the current rotation speed to the target rotation speed.
For example, the preset rotational speed adjustment mode may be a step-up/down motor current mode, and the magnitude of the current increased/decreased each time is the same, and the rotational speed of the ventricular catheter pump is adjusted in accordance with such a rotational speed adjustment mode; the preset rotation speed adjusting mode can also be motor current increased/decreased in an initial stage, the current amplitude of each increase/decrease is A, and when the difference between the current rotation speed and the target rotation speed is smaller than a preset difference threshold value in the process of gradually approaching the target rotation speed, the motor current is increased/decreased according to the amplitude of the current amplitude is B, wherein B is smaller than A.
Step S202: a rotational speed variation relationship is determined that characterizes time-series fluctuations in the actual rotational speed of the ventricular catheter pump during the adjustment.
The above-described rotational speed variation relationship represents a fluctuation in the actual rotational speed of the ventricular catheter pump in the time-series dimension.
Due to the characteristics of the ventricular catheter pump and the complex environment of blood, the actual rotation speed is different from the change condition of the input rotation speed in the process of adjusting the ventricular catheter pump, although the change condition of the input rotation speed shows linear change, and the time sequence fluctuation condition of the actual rotation speed may show nonlinear change. It will be appreciated that the rotational speed variation relationship described above may reflect, to some extent, the characteristics of the ventricular catheter pump itself, the characteristics of the blood transport system, such as vascular occlusion, blood viscosity, etc., or a combination thereof.
When the rotation speed change relation is determined, the actual rotation speed corresponding to each adjusting moment of the ventricular catheter pump in the rotation speed adjusting process can be collected, the actual rotation speed corresponding to the adjusting moment and the adjusting moment is fitted, and the fitting result is determined to be the rotation speed change relation.
Step S203: and predicting the rotating speed of the ventricular catheter pump based on the rotating speed change relation, the physiological parameter of the target object aimed by the ventricular catheter pump and a preset prediction model to obtain a predicted rotating speed.
The target object is an object to which the ventricular catheter pump is directed. The physiological parameters may include parameters such as height, weight, heart pressure, blood index, etc. of the target subject.
The above-described predictive model is pre-constructed. When the rotating speed of the ventricular catheter pump is predicted, the rotating speed change relation and the physiological parameters of the target object can be preprocessed, the preprocessed rotating speed change relation and the physiological parameters of the target object are converted into parameter data in a preset data format, and the parameter data are input into a prediction model to obtain the predicted rotating speed output by the prediction model.
Wherein, the prediction model can be obtained by the following way: obtaining a plurality of sets of training parameters, each set of training parameters comprising: sample rotation speed change relation, sample physiological parameters and sample required rotation speed; and training an initial prediction model by adopting a plurality of groups of training parameters, and determining the model after training as a prediction model. Then, the rotation speed change relation can be input into the prediction model by the physiological parameter of the target object, so that the rotation speed output by the prediction model is obtained and used as the predicted rotation speed.
The initial predictive model may be a neural network model. Specifically, the sample rotation speed change curve and the sample sign parameters can be input into an initial prediction model to obtain the output rotation speed as a rotation speed initial value, then the difference between the rotation speed initial value and the rotation speed required by the sample is calculated, the parameters of the initial prediction model are adjusted based on the difference, the training steps are repeated until the difference is smaller than a set value, and the training is finished.
Because the prediction model is obtained by training based on a large number of training samples, the characteristics among the rotation speed change relation, the physiological parameters and the rotation speed can be learned by the prediction model, and therefore, the prediction rotation speed can be accurately determined based on the prediction model, and the accuracy of rotation speed control is improved.
Step S204: and controlling the operation of the ventricular catheter pump according to the predicted rotating speed.
In controlling the operation of the ventricular catheter pump, in the first embodiment, the above-described predicted rotational speed may be directly determined as the control parameter, and the operation of the ventricular catheter pump may be controlled according to the determined control parameter.
In a second embodiment, a gear corresponding to the predicted rotational speed may be determined, and as the predicted gear, it is determined whether the predicted gear is the same as the target gear, if so, the predicted rotational speed is determined as a first control parameter, and if not, the operation of the ventricular catheter pump is controlled according to the first control parameter, and if so, the predicted gear is indicated to the user, a second control parameter indicated by the user is determined, and the operation of the ventricular catheter pump is controlled according to the second control parameter.
When the predicted gear is determined, a target rotation speed range to which the predicted rotation speed belongs in a preset rotation speed range can be determined, and a gear corresponding to the target rotation speed range is determined as the predicted gear based on a corresponding relation between the preset gear and the rotation speed range.
If the predicted gear is the same as the target gear, the adaptation degree of the target gear and the current physiological condition of the target object is higher, and in this case, the ventricular catheter pump is directly controlled according to the predicted rotating speed without adjusting the target gear, so that the control efficiency of the ventricular catheter pump is improved.
If the predicted gear is different from the target gear, the adaptation degree between the target gear and the current physiological condition of the target object is low, and in this case, the predicted gear is indicated to the user. The user may re-determine the gear of the ventricular catheter pump based on the predicted gear displayed by the control device and based on the current physiological condition of the target subject, and input the re-determined gear. The control device can thus determine the corresponding rotational speed as the second control parameter on the basis of the gear position redefined by the user. And the ventricular catheter pump is controlled according to the second control parameter, so that the control precision of the ventricular catheter pump is improved.
From the above, it can be seen that, by applying the scheme provided by the embodiment, the rotation speed of the ventricular catheter pump is predicted by the prediction model based on the rotation speed change relation and the physiological parameter, and the time sequence change condition of the actual rotation speed of the ventricular catheter pump is reflected by the rotation speed change relation, so that the current equipment characteristic of the ventricular catheter pump can be reflected by the time sequence change condition of the actual rotation speed of the ventricular catheter pump, and the current physiological condition of the target object can be reflected by the physiological parameter, so that the predicted rotation speed can be more accurately adapted to the current physiological condition of the target object and the current equipment characteristic of the ventricular catheter pump based on the information of the two aspects, and thus, the operation of the ventricular catheter pump can be controlled based on the predicted rotation speed, and the self-adaptive control of the ventricular catheter pump can be realized, thereby improving the control precision of the ventricular catheter pump.
In step S204 of the foregoing embodiment of fig. 2, steps S304-S306 of the following embodiment of fig. 3 may be employed in addition to the two mentioned embodiments for controlling the operation of the ventricular catheter pump. Based on this, referring to fig. 3, fig. 3 is a flowchart of a method for adaptively controlling a rotational speed of a second ventricular catheter pump according to an embodiment of the present application, where the method includes the following steps S301 to S306.
Step S301: and determining a target rotating speed corresponding to the target gear input by the user, and adjusting the rotating speed of the ventricular catheter pump according to the target rotating speed.
Step S302: a rotational speed variation relationship is determined that characterizes time-series fluctuations in the actual rotational speed of the ventricular catheter pump during the adjustment.
Step S303: and predicting the rotating speed of the ventricular catheter pump based on the rotating speed change relation, the physiological parameter of the target object aimed by the ventricular catheter pump and a preset prediction model to obtain a predicted rotating speed.
The steps S301 to S303 are the same as the steps S201 to S203, and are not described here again.
Step S304: and calculating a rotation speed difference between the predicted rotation speed and the target rotation speed, and determining the rotation speed adjustment times based on the rotation speed difference.
Wherein, the rotation speed adjustment times and the rotation speed difference are positively correlated.
When the adjustment times are determined, normalizing the rotation speed difference, and determining data obtained by normalizing as the adjustment times; and a corresponding relation between a preset rotating speed difference and preset adjusting times can be constructed, and the adjusting times corresponding to the rotating speed difference can be determined based on the corresponding relation and used as the rotating speed adjusting times.
Step S305: and calculating a single rotation speed adjustment amount based on the rotation speed difference and the rotation speed adjustment times.
Specifically, a ratio between the rotational speed difference and the number of rotational speed adjustment times may be calculated, and the calculated ratio is determined as a single rotational speed adjustment amount.
Step S306: and controlling the rotation speed of the ventricular catheter pump according to the rotation speed adjustment times and the single rotation speed adjustment quantity so as to enable the rotation speed of the ventricular catheter pump to reach the predicted rotation speed.
When the rotation speed of the ventricular catheter pump is controlled, the rotation speed of the ventricular catheter pump can be gradually increased/decreased, the adjustment times are the determined rotation speed adjustment times, and each adjustment amount is the determined single rotation speed adjustment amount until the rotation speed of the ventricular catheter pump reaches the predicted rotation speed.
The rotation speed of the ventricular catheter pump is controlled according to the rotation speed adjustment times and the single rotation speed adjustment quantity, so that the rotation speed can be stably controlled, equipment abnormality caused by sudden fluctuation of the rotation speed in a short time is avoided, and the control stability of the ventricular catheter pump is ensured.
Corresponding to the above-mentioned rotational speed self-adaptive control method of the ventricular catheter pump, the embodiment of the application also provides a rotational speed self-adaptive control device of the ventricular catheter pump.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a rotational speed adaptive control device for a ventricular catheter pump according to an embodiment of the present application, where the device includes the following 401-404.
The rotation speed adjusting module 401 is configured to determine a target rotation speed corresponding to a target gear input by a user, and adjust a rotation speed of the ventricular catheter pump according to the target rotation speed;
a rotational speed variation determination module 402 for determining a rotational speed variation relationship characterizing a time-series fluctuation of an actual rotational speed of the ventricular catheter pump during the adjustment;
the rotation speed prediction module 403 is configured to predict a rotation speed of the ventricular catheter pump based on the rotation speed variation relationship, a physiological parameter of the target object targeted by the ventricular catheter pump, and a preset prediction model, so as to obtain a predicted rotation speed;
a rotational speed control module 404 for controlling operation of the ventricular catheter pump in accordance with a predicted rotational speed.
From the above, it can be seen that, by applying the scheme provided by the embodiment, the rotation speed of the ventricular catheter pump is predicted by the prediction model based on the rotation speed change relation and the physiological parameter, and the time sequence change condition of the actual rotation speed of the ventricular catheter pump is reflected by the rotation speed change relation, so that the current equipment characteristic of the ventricular catheter pump can be reflected by the time sequence change condition of the actual rotation speed of the ventricular catheter pump, and the current physiological condition of the target object can be reflected by the physiological parameter, so that the predicted rotation speed can be more accurately adapted to the current physiological condition of the target object and the current equipment characteristic of the ventricular catheter pump based on the information of the two aspects, and thus, the operation of the ventricular catheter pump can be controlled based on the predicted rotation speed, and the self-adaptive control of the ventricular catheter pump can be realized, thereby improving the control precision of the ventricular catheter pump.
In one embodiment of the present application, the above-mentioned rotational speed control module is specifically configured to determine a gear corresponding to the predicted rotational speed as a predicted gear; judging whether the predicted gear is the same as the target gear; if so, determining the predicted rotating speed as a first control parameter, and controlling the operation of the ventricular catheter pump according to the first control parameter.
If the predicted gear is the same as the target gear, the adaptation degree of the target gear and the current physiological condition of the target object is higher, and in this case, the ventricular catheter pump is directly controlled according to the predicted rotating speed without adjusting the target gear, so that the control efficiency of the ventricular catheter pump is improved.
In one embodiment of the present application, if the predicted gear is different from the target gear, the rotational speed control module is further specifically configured to indicate the predicted gear to the user, so that the user determines a second control parameter based on the predicted gear; and acquiring a second control parameter determined by the user, and controlling the operation of the ventricular catheter pump according to the second control parameter.
If the predicted gear is different from the target gear, the adaptation degree between the target gear and the current physiological condition of the target object is low, and in this case, the predicted gear is indicated to the user. The user may re-determine the gear of the ventricular catheter pump based on the predicted gear displayed by the control device and based on the current physiological condition of the target subject, and input the re-determined gear. The control device can thus determine the corresponding rotational speed as the second control parameter on the basis of the gear position redefined by the user. And the ventricular catheter pump is controlled according to the second control parameter, so that the control precision of the ventricular catheter pump is improved.
In one embodiment of the present application, the above-mentioned rotational speed control module is specifically configured to calculate a rotational speed difference between the predicted rotational speed and the target rotational speed, and determine a rotational speed adjustment number based on the rotational speed difference, where the rotational speed adjustment number is positively correlated with the rotational speed difference; calculating a single rotation speed adjustment amount based on the rotation speed difference and the rotation speed adjustment times; and controlling the rotation speed of the ventricular catheter pump according to the rotation speed adjustment times and the single rotation speed adjustment quantity so as to enable the rotation speed of the ventricular catheter pump to reach the predicted rotation speed.
The rotation speed of the ventricular catheter pump is controlled according to the rotation speed adjustment times and the single rotation speed adjustment quantity, so that the rotation speed can be stably controlled, equipment abnormality caused by sudden fluctuation of the rotation speed in a short time is avoided, and the control stability of the ventricular catheter pump is ensured.
In an embodiment of the present application, the rotation speed prediction module is specifically configured to obtain multiple sets of training parameters, where each set of training parameters includes: sample rotation speed change relation, sample physiological parameters and sample required rotation speed; training an initial prediction model by adopting the plurality of groups of training parameters, and determining a model after training as a prediction model; and inputting the rotation speed change relation and the physiological parameter of the target object aimed by the ventricular catheter pump into the prediction model to obtain the rotation speed output by the prediction model as the predicted rotation speed.
Because the prediction model is obtained by training based on a large number of training samples, the characteristics among the rotation speed change relation, the physiological parameters and the rotation speed can be learned by the prediction model, and therefore, the prediction rotation speed can be accurately determined based on the prediction model, and the accuracy of rotation speed control is improved.
Corresponding to the above-mentioned self-adaptive control method for the rotational speed of the ventricular catheter pump, the embodiment of the application also provides an electronic device.
The embodiment of the application also provides an electronic device, as shown in fig. 5, including a processor 501, a communication interface 502, a memory 503, and a communication bus 504, where the processor 501, the communication interface 502, and the memory 503 complete communication with each other through the communication bus 504,
a memory 503 for storing a computer program;
the processor 501 is configured to implement the method for adaptively controlling the rotational speed of the ventricular catheter pump according to the embodiment of the present application when executing the program stored in the memory 503.
The communication bus mentioned above for the electronic device may be a Peripheral component interconnect standard (Peripheral ComponentInterconnect, PCI) bus or an extended industry standard architecture (Extended Industry StandardArchitecture, EISA) bus, etc. The communication bus may be classified as an address bus, a data bus, a control bus, or the like. For ease of illustration, the figures are shown with only one bold line, but not with only one bus or one type of bus.
The communication interface is used for communication between the electronic device and other devices.
The machine-readable storage medium may include RAM (Random Access Memory ) or NVM (Non-Volatile Memory), such as at least one magnetic disk Memory. Additionally, the machine-readable storage medium may be at least one storage device located remotely from the processor.
The processor may be a general-purpose processor, including a CPU (Central Processing Unit ), NP (Network Processor, network processor), etc.; but also DSP (Digital Signal Processing, digital signal processor), ASIC (Application Specific Integrated Circuit ), FPGA (Field-Programmable Gate Array, field programmable gate array) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In this specification, each embodiment is described in a related manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for the electronic device embodiments, since they are substantially similar to the method embodiments, the description is relatively simple, and reference is made to the description of the method embodiments in part.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the scope of the present application. Any modifications, equivalent substitutions, improvements, etc. that are within the spirit and principles of the present application are intended to be included within the scope of the present application.
Claims (3)
1. A rotational speed self-adaptive control device of a ventricular catheter pump is characterized in that,
the device comprises:
the rotation speed adjusting module is used for determining a target rotation speed corresponding to a target gear input by a user and adjusting the rotation speed of the ventricular catheter pump according to the target rotation speed; wherein said adjusting the rotational speed of said ventricular catheter pump in accordance with said target rotational speed comprises: and adjusting the current rotating speed to a target rotating speed by adopting a preset rotating speed adjusting mode, wherein the preset rotating speed adjusting mode is as follows: the preset rotating speed regulating mode is a mode of gradually increasing/decreasing motor current;
the rotating speed change determining module is used for determining a rotating speed change relation of time sequence fluctuation conditions representing the actual rotating speed of the ventricular catheter pump in the adjusting process;
the rotating speed prediction module is used for predicting the rotating speed of the ventricular catheter pump based on the rotating speed change relation, the physiological parameters of the target object aimed by the ventricular catheter pump and a preset prediction model to obtain a predicted rotating speed, wherein the current increased/decreased each time has the same magnitude, and the physiological parameters comprise the height and the weight of the target object;
the rotating speed control module is used for controlling the operation of the ventricular catheter pump according to the predicted rotating speed; wherein said controlling operation of said ventricular catheter pump in accordance with a predicted rotational speed comprises: determining a target rotating speed range to which a predicted rotating speed belongs in a preset rotating speed range, and determining a gear corresponding to the target rotating speed range as a predicted gear based on a corresponding relation between a preset gear and the rotating speed range; judging whether the predicted gear is the same as the target gear; if yes, determining the predicted rotating speed as a first control parameter, and controlling the operation of the ventricular catheter pump according to the first control parameter; if the predicted gear is different from the target gear, indicating the predicted gear to the user so that the user determines a second control parameter based on the predicted gear; and acquiring a second control parameter determined by the user, and controlling the operation of the ventricular catheter pump according to the second control parameter.
2. The apparatus of claim 1, wherein the device comprises a plurality of sensors,
the rotating speed control module is specifically configured to calculate a rotating speed difference between the predicted rotating speed and the target rotating speed, and determine a rotating speed adjustment number based on the rotating speed difference, where the rotating speed adjustment number is positively correlated with the rotating speed difference; calculating a single rotation speed adjustment amount based on the rotation speed difference and the rotation speed adjustment times; and controlling the rotation speed of the ventricular catheter pump according to the rotation speed adjustment times and the single rotation speed adjustment quantity so as to enable the rotation speed of the ventricular catheter pump to reach the predicted rotation speed.
3. The device according to any one of claims 1-2, wherein,
the rotation speed prediction module is specifically configured to obtain multiple sets of training parameters, where each set of training parameters includes: sample rotation speed change relation, sample physiological parameters and sample required rotation speed; training an initial prediction model by adopting the plurality of groups of training parameters, and determining a model after training as a prediction model; and inputting the rotation speed change relation and the physiological parameter of the target object aimed by the ventricular catheter pump into the prediction model to obtain the rotation speed output by the prediction model as the predicted rotation speed.
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