Interventional pump braking control method, device, equipment and ventricular assist device

Abstract

The application relates to an interventional pump braking control method, device and equipment and a ventricular assist device, and particularly relates to the technical field of medical instruments. The method is applied to a ventricular assist device, the ventricular assist device comprises a power supply module, a driving motor, an interventional pump and a flushing pump; the method comprises the following steps: in response to emergency braking instruction information of the interventional pump, braking the driving motor, and updating a target control parameter of the flushing pump into first target data; the first target data is used for indicating that the flushing pump consumes induced current generated by the driving motor; in an emergency braking stage of the interventional pump, driving the flushing pump to work based on the first target data and the induced current. The above scheme enables the electric energy generated by electromagnetic induction in the process of emergency braking of the interventional pump to be quickly consumed by the flushing pump, so that the braking time of the interventional pump is reduced.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an interventional pump braking control method, device, equipment, and ventricular assist device. Background Technology

[0002] A ventricular assist device (VAD), also known as a mechanical circulatory assist device, is a device that helps the heart pump blood from the lower chambers (ventricles) to the rest of the body.

[0003] Ventricular assist devices include an interventional pump for delivering blood and an flushing pump for delivering flushing fluid. During the power transmission of the interventional pump impeller, there are multiple rotating components, such as the drive shaft and proximal and distal bearings supporting the impeller. Therefore, during catheter pumping, flushing fluid needs to be injected into the catheter to lubricate and cool these rotating components. In practical scenarios, in an emergency, the power supply to the interventional pump can be switched off to stop its operation and prevent harm to the patient.

[0004] However, in the above scheme, after issuing a command to shut off the power of the intervention pump, the motor of the intervention pump will continue to rotate due to inertia and cannot be stopped immediately. Summary of the Invention

[0005] This application provides a method, device, equipment, and ventricular assist device for controlling the braking of an interventional pump, which reduces the emergency braking time of the interventional pump. The technical solution is as follows.

[0006] On one hand, an interventional pump braking control method is provided, the method being applied to a ventricular assist device, the ventricular assist device including a power supply module, a drive motor, an interventional pump, and an flushing pump; the drive motor is coupled to the interventional pump to drive the interventional pump to rotate; the flushing pump is used to deliver flushing fluid to the interventional pump; the drive motor is connected in parallel with the flushing pump, the drive motor is connected to the power supply module through a first branch, and the flushing pump is connected to the power supply module through a second branch;

[0007] The method includes:

[0008] In response to an emergency braking command message for the intervention pump, the drive motor is braked, and the target control parameters of the flushing pump are updated to first target data; the first target data is used to indicate that the flushing pump consumes the induced current generated by the drive motor, the induced current being generated based on the relative rotation between the drive motor and the intervention pump;

[0009] During the emergency braking phase of the intervention pump, the flushing pump is driven to operate based on the first target data and the induced current; wherein the induced current flows into the flushing pump through the second branch.

[0010] In another aspect, the present invention provides an interventional pump braking control device, which is applied to a ventricular assist device. The ventricular assist device includes a power supply module, a drive motor, an interventional pump, and an flushing pump. The drive motor is coupled to the interventional pump to drive the interventional pump to rotate. The flushing pump is used to deliver flushing fluid to the interventional pump. The drive motor is connected in parallel with the flushing pump. The drive motor is connected to the power supply module through a first branch, and the flushing pump is connected to the power supply module through a second branch.

[0011] The interventional pump braking control device includes:

[0012] The parameter update module is used to brake the drive motor in response to an emergency braking command message for the intervention pump, and to update the target control parameters of the flushing pump to first target data; the first target data is used to indicate that the flushing pump consumes the induced current generated by the drive motor, the induced current being generated based on the relative rotation between the drive motor and the intervention pump;

[0013] A pump control module is used to drive the flushing pump to operate based on the first target data and the induced current during the emergency braking phase of the intervention pump; wherein the induced current flows into the flushing pump through the second branch.

[0014] In another aspect, the present invention provides a computer device, the computer device including a processor and a memory, the memory storing at least one instruction, the at least one instruction being loaded and executed by the processor to implement the above-described intervention pump braking control method.

[0015] In another aspect, the present invention provides a ventricular assist device, the ventricular assist device including a controller, a power supply module, a drive motor, an interventional pump, and an irrigation pump; the drive motor is coupled to the interventional pump to drive the interventional pump to rotate; the irrigation pump is used to deliver irrigation fluid to the interventional pump; the drive motor is connected in parallel with the irrigation pump, the drive motor is connected to the power supply module through a first branch, and the irrigation pump is connected to the power supply module through a second branch;

[0016] The controller is used for:

[0017] In response to an emergency braking command message for the intervention pump, the drive motor is controlled to brake, and the target control parameters of the flushing pump are updated to first target data; the first target data is used to indicate that the flushing pump consumes the induced current generated by the drive motor, the induced current being generated based on the relative rotation between the drive motor and the intervention pump;

[0018] During the emergency braking phase of the intervention pump, the flushing pump is controlled to operate based on the first target data and the induced current; wherein the induced current flows into the flushing pump through the second branch.

[0019] The technical solution provided in this application may include the following beneficial effects:

[0020] The ventricular assist device involved in this application includes a power supply module, an interventional pump, and an flushing pump. The interventional pump and the flushing pump are connected in parallel and form a circuit with the power supply module respectively. If an emergency braking command is received for the interventional pump, the target control parameters of the flushing pump can be updated to the first target data, thereby controlling the working current of the flushing pump during operation. This allows the electrical energy generated by electromagnetic induction during emergency braking of the interventional pump to be quickly consumed by the flushing pump, thereby reducing the braking time of the interventional pump. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a ventricular assist device according to an exemplary embodiment;

[0023] Figure 2 A schematic diagram showing the operating state of an intervention pump and a flushing pump according to an embodiment of this application is illustrated;

[0024] Figure 3 A schematic diagram of the intervention pump braking state according to an embodiment of this application is shown;

[0025] Figure 4 This is a schematic flowchart illustrating an interventional pump braking control method according to an exemplary embodiment;

[0026] Figure 5 This is a schematic flowchart illustrating an interventional pump braking control method according to another exemplary embodiment;

[0027] Figure 6 This is a schematic flowchart illustrating an interventional pump braking control method according to another exemplary embodiment;

[0028] Figure 7 A schematic diagram of the structure of a ventricular assist device according to an embodiment of this application is shown;

[0029] Figure 8This is a structural block diagram of an interventional pump braking control device according to an exemplary embodiment;

[0030] Figure 9 This is a schematic diagram of the structure of a computer device provided in an embodiment of this application;

[0031] Figure 10 This is a schematic diagram of the emergency braking process of the intervention pump in the embodiments of this application. Detailed Implementation

[0032] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] It should be understood that the term "instruction" mentioned in the embodiments of this application can be a direct instruction, an indirect instruction, or an indication of a relationship. For example, A instructing B can mean that A directly instructs B, such as B being able to obtain information through A; it can also mean that A indirectly instructs B, such as A instructing C, so B can obtain information through C; or it can mean that there is a relationship between A and B.

[0034] In the description of the embodiments of this application, the term "correspondence" may indicate that there is a direct or indirect correspondence between two things, or that there is an association between two things, or that there is a relationship of instruction and being instructed, configuration and being configured, etc.

[0035] In the embodiments of this application, "predefined" can be achieved by pre-storing corresponding codes, tables or other means that can be used to indicate relevant information in the device (e.g., including terminal devices and network devices). This application does not limit the specific implementation method.

[0036] Figure 1 This is a schematic diagram illustrating the structure of a ventricular assist device according to an exemplary embodiment. Figure 1As shown, the device includes a power supply module 100, an interventional pump (not shown), a flushing pump (not shown), a controller (MCU) 110, a drive motor 120 corresponding to the interventional pump, a first drive module (such as a drive / switch circuit) 130 for the drive motor, a flushing pump motor 140, and a second drive module (such as a drive / switch circuit) 150 corresponding to the flushing pump motor. The drive motor 120 is coupled to the interventional pump to drive its rotation, thereby driving the interventional pump to deliver blood. The flushing pump motor 140 is fixedly connected to the flushing pump to drive its rotation, thereby driving the flushing pump to deliver flushing fluid into the interventional pump. The drive motor 120 corresponding to the interventional pump is connected to the power supply module via a first branch, and the flushing pump is connected to the power supply module via a second branch.

[0037] from Figure 1 As can be seen, the first drive module and the second drive module form a circuit with the controller, and the two are connected in parallel to the power supply module and are also connected to the controller. The controller controls the intervention pump and the flushing pump by controlling the two drive modules, and the intervention pump and the flushing pump are thus in parallel.

[0038] The first drive module 130 and the power supply module 100 form a circuit, namely the first branch, so that the power supply module 100 can supply power to the first drive module 130, and the controller 110 can control the first drive module 130, thereby controlling the power supply current of the first drive module 130 to the drive motor 120; the first drive module 130 is used to drive the drive motor 120 to work, so as to realize the blood delivery.

[0039] Optionally, the drive motor 120 can be a BLDC motor (brushless DC motor).

[0040] Optionally, the second drive module 150 also forms a circuit with the power supply module 100, so that the power supply module 100 can supply power to the second drive module 150; the second drive module 150 is used to drive the flushing pump motor 140 to work, so as to realize the delivery of flushing fluid.

[0041] Optionally, the flushing pump motor 140 can be a stepper motor.

[0042] The controller 110 in this ventricular assist device can be an MCU (Microcontroller Unit). Optionally, the controller can also be a CPU (Central Processing Unit), a microcontroller, or other device with data processing capabilities. The controller is connected to the first drive module and the second drive module respectively to control the operating status of the interventional pump and the flushing pump.

[0043] Please refer to Figure 2 It shows a schematic diagram of the operating state of an intervention pump and a flushing pump according to an embodiment of this application. Figure 2 As shown, when the intervention pump and flushing pump are in normal working condition, the power supply module 100 provides a power supply voltage U and generates a current I in the main circuit. At this time, the current I is transmitted to the first drive module 130 and the second drive module 150 respectively, so that the intervention pump and flushing pump can work normally.

[0044] In the above working state, the first drive module 130 and the power supply module 100 are connected to form the first branch Is1. The current flows from the positive terminal of the power supply module to the first drive module 130, and then from the first drive module 130 to the negative terminal of the power supply module 100.

[0045] Similarly, under the above working state, the second drive module 150 is connected in parallel with both sides of the first drive module 130 and connected to the power supply module 100 to form the second branch Is2. The current flows from the positive terminal of the power supply module 100 to the second drive module 150, and then from the second drive module 150 to the negative terminal of the power supply module 100.

[0046] The first drive module 130 can be a drive / switching circuit for a drive motor, and the second drive module 150 can be a drive / switching circuit for a flushing pump motor.

[0047] Furthermore, during the aforementioned process, the controller 110 can perform real-time control of the operating status of the intervention pump and the flushing pump. For example, the controller 110 can control the drive / switching circuit of the drive motor and the drive / switching circuit of the flushing pump to adjust the operating status of the drive motor 120 and the flushing pump motor 140. When the drive / switching circuit of the drive motor and the drive / switching circuit of the flushing pump are in operation, the motors of the intervention pump and the flushing pump are allowed to enter the operating state.

[0048] When the intervention pump or flushing pump is in normal working condition, the controller can also stop outputting control signals to the drive / switching circuit of the drive motor or the drive / switching circuit of the flushing pump, thereby turning off the drive / switching circuit of the drive motor or the drive / switching circuit of the flushing pump, thus shutting down the drive motor of the intervention pump or the flushing pump motor.

[0049] In real-world applications, there may be emergencies requiring the shutdown of the interventional pump. Please refer to [the relevant documentation / reference]. Figure 3 , Figure 3 A schematic diagram of the intervention pump braking state according to an embodiment of this application is shown. Figure 3As shown, when an emergency necessitates shutting down the interventional pump, the controller 110 can stop outputting control signals to the drive / switching circuit of the drive motor 120. However, even when the drive / switching circuit of the drive motor 120 stops controlling the motor, due to inertia and the coupled connection between the drive motor 120 and the interventional pump, the internal rotor of the motor and the rotor of the interventional pump will continue to rotate relative to each other due to inertia, generating an induced electromotive force. At this time, the drive motor 120 is equivalent to a generator connected in parallel with the power supply module 100. The direction of the induced current is as follows... Figure 3 As shown in Is1, the current direction is the same as that of the power supply module 100. If the electricity generated by the drive motor cannot be consumed in time, the drive motor 120 will continue to rotate for a period of time, and the intervention pump will therefore not be able to stop rotating immediately.

[0050] Optionally, the drive motor and the interventional pump are connected by eddy current coupling. The drive motor includes an active component, and the interventional pump includes a driven component. The active component and the driven component are nested together. The driven component rotates axially within the active component.

[0051] When the drive circuit of the intervention pump stops driving the motor, the driven member and the driving member rotate relative to each other, thereby generating an induced electromotive force in the internal circuit of the drive motor.

[0052] Optionally, the drive motor and the interventional pump are magnetically coupled. The drive motor includes a first magnet, and the interventional pump includes a second magnet. The first magnet is connected to the drive circuit of the drive motor. When the interventional pump is stopped, the first magnet and the second magnet generate a speed difference, thereby generating an induced electromotive force in the internal circuit of the drive motor.

[0053] In a specific application example, the drive motor of the interventional pump includes a motor and a drive rotor, and the interventional pump includes a driven rotor;

[0054] Wherein, when the drive motor and the intervention pump are engaged, the drive rotor is coupled to the driven rotor to drive the driven rotor to rotate;

[0055] During the process of updating the target control parameters of the flushing pump to the first target data, relative rotation occurs between the drive rotor and the driven rotor, generating an induced current. The electrical energy generated by the induced current is consumed by the flushing pump.

[0056] The aforementioned driving rotor can be the driving element under eddy current coupling or the first magnet under magnetic coupling. Correspondingly, the aforementioned driven rotor can be the driven element under eddy current coupling or the second magnet under magnetic coupling.

[0057] Figure 4 This is a schematic flowchart illustrating an interventional pump braking control method according to an exemplary embodiment. The method comprises, as follows: Figure 1 The controller in the illustrated ventricular assist device is activated. Optionally, the ventricular assist device includes a power supply module, a drive motor, an interventional pump, and an irrigation pump; the drive motor is coupled to the interventional pump to drive the interventional pump to rotate; the irrigation pump is used to deliver irrigation fluid to the interventional pump; the drive motor is connected in parallel with the irrigation pump, the drive motor is connected to the power supply module through a first branch, and the irrigation pump is connected to the power supply module through a second branch.

[0058] like Figure 4 As shown, the intervention pump braking control method may include the following steps:

[0059] Step 401: In response to the emergency braking command information for the intervention pump, brake the drive motor and update the target control parameters of the flushing pump to the first target data.

[0060] The first target data is used to indicate the induced current generated by the drive motor consumed by the flushing pump. The induced current is generated based on the relative rotation between the drive motor and the intervention pump.

[0061] In this embodiment of the application, in order to speed up the stopping speed of the intervention pump, when the intervention pump meets the conditions for emergency stopping, an emergency braking command information can be generated accordingly. At this time, after the controller detects the emergency braking command information, it can adjust the target control parameters of the flushing pump, thereby adjusting the working current consumed by the flushing pump during operation.

[0062] The above emergency braking command information can be triggered based on preset control operations or based on alarms or abnormal situations detected by the equipment itself.

[0063] Step 402: During the emergency braking phase of the intervention pump, the flushing pump is driven to operate based on the first target data and the induced current; wherein, the induced current flows into the flushing pump through the second branch.

[0064] After the target control parameters of the flushing pump are updated to the first target data, the input operating current of the flushing pump changes (it can be a change in magnitude or a change in the input source). During the process of the intervention pump receiving the emergency braking command information and generating induced electromotive force in an electromagnetic induction state, the flushing pump can consume more current due to the change in the target control parameters. Therefore, it can consume the aforementioned induced current, thereby increasing the consumption rate of induced current, shortening the intervention pump stop time, and enabling the intervention pump to quickly apply emergency braking.

[0065] In summary, the ventricular assist device involved in this application includes a power supply module, an interventional pump, and an flushing pump. The interventional pump and the flushing pump are connected in parallel and form circuits with the power supply module respectively. If an emergency braking command is received for the interventional pump, the target control parameters of the flushing pump can be updated to the first target data, thereby controlling the working current of the flushing pump during operation. This allows the electrical energy generated by electromagnetic induction during emergency braking of the interventional pump to be quickly consumed by the flushing pump, thereby reducing the braking time of the interventional pump.

[0066] In some embodiments, the target control parameters include, but are not limited to, torque, speed, flow rate, and set operating current; correspondingly, the first target data includes, but is not limited to, a first target torque, a first target speed, a first target flow rate, and a first target operating current, and the first target data is greater than or equal to the second target data corresponding to the target control parameters before emergency braking. The second target data includes, but is not limited to, a second target torque, a second target speed, a second target flow rate, and a second target operating current.

[0067] The controller can make the flushing pump consume induced current by modifying the above target control parameters. This means that the current supplied by the second drive module to the flushing pump motor needs to include the induced current component. The amount or presence of the power supply current component can be adjusted according to the actual situation.

[0068] In an exemplary embodiment, driving the flushing pump based on the first target data and the induced current includes at least the following methods:

[0069] Method 1: With the target control parameters reaching the first target data as the objective, control the flushing pump to operate based on the power supply current and the induced current;

[0070] Method 2: Control the flushing pump to operate based on induced current.

[0071] The power supply current refers to the current supplied by the power supply module to the flushing pump.

[0072] In Method 1, the power supply module can still supply power to the flushing pump. During the intervention pump braking phase, the flushing pump can be powered by both the supply current and the induced current. Under this dual power supply, the working state of the flushing pump can be changed by modifying the speed and flow rate of the flushing pump, thereby causing the flushing pump to consume the induced current and shorten the intervention pump braking time.

[0073] When the first target data equals the second target data, the controller can keep the working state of the flushing pump unchanged, but it needs to adjust the power supply current so that the induced current is input to the second drive module and then input to the flushing pump motor by the second drive module.

[0074] When the first target data is greater than the second target data, the target control parameter corresponding to the flushing pump is increased to the first target data when the intervention pump brakes. However, the actual parameter data at the start of the intervention pump brake cannot reach the first target data in time. Therefore, the second drive module needs to output more current to the flushing pump. The induced current generated when the drive motor brakes can be input to the flushing pump motor through the second drive module, so that the flushing pump can consume the above-mentioned induced current and shorten the emergency braking time of the intervention pump.

[0075] The aforementioned first target data can be at least the first target torque, the first target speed, the first target flow rate, or the first target operating current.

[0076] The first target torque indicates the target torque of the flushing pump during the intervention pump braking process, while the second target torque indicates the target torque of the flushing pump before the intervention pump braking. The second target torque is less than or equal to the first target torque. When the first target torque is greater than the second target torque, the target torque corresponding to the flushing pump is increased to the first target torque during intervention pump braking. However, the actual torque at the start of intervention pump braking does not reach the first target torque. Therefore, the second drive module needs to output more current to the flushing pump. The induced current generated during drive motor braking can then be input to the flushing pump motor through the second drive module, thereby allowing the flushing pump to consume the aforementioned induced current and shorten the emergency braking time of the intervention pump.

[0077] The first target speed, first target flow rate, or first target operating current are similar to the first target torque, so they will not be described again here.

[0078] Whether the first target data equals the second target data or is greater than the second target data, the induced current is not a constant input. Therefore, the controller needs to adjust the power supply current input to the flushing pump motor side in real time, which can also be described as adjusting the output of the second drive module. When controlling the flushing pump, the current data corresponding to the target control parameters can be compared with the first target data, and the operating state of the flushing pump can be gradually changed to achieve the first target data.

[0079] In an exemplary embodiment, the controller or the second drive module can determine the current data corresponding to the target control parameter; and control the input of the power supply current according to the current data corresponding to the target control parameter and the first target data.

[0080] Specifically, changes in the induced current, such as a decrease, will instantaneously reduce the current data corresponding to the target control parameter, such as the speed, flow rate, torque, and operating current. This means that the current data corresponding to the target control parameter cannot reach the first target data in time. Therefore, by comparing the current data with the first target data, the easily controllable power supply current can be adjusted. By adjusting the power supply current, the flushing pump can consume the induced current while maintaining a stable operating state at the set point, thus maintaining the stability of the system.

[0081] In mode 2, the controller can stop the power supply module from supplying power to the flushing pump and only control the flushing pump to operate based on the induced current, thereby causing the flushing pump to consume the induced current and shorten the braking time of the intervention pump.

[0082] In some embodiments, the controller can adjust the power supply current supplied to the flushing pump by the power supply module, for example, by reducing or stopping the power supply current. During this process, the amount of reduction in the power supply current, or the decision to stop the power supply current, can be jointly determined by the target control parameter and the first target data. The target control parameter can be the current target control parameter for the power supply current (i.e., the target control parameter for the power supply current), while the first target data can be the target data for the power supply current. During the intervention pump braking phase, based on the target data for the power supply current, the power supply current supplied to the flushing pump by the power supply module can be reduced or stopped. If reducing the power supply current is chosen, the specific amount of current reduction can be specified. Subsequently, the flushing pump can be driven based on the reduced power supply current and the induced current, or, if the power supply current is stopped, the flushing pump can be driven only based on the induced current. This flexible adjustment of the flushing pump's operating state through multiple methods improves the ease of adjustment.

[0083] Figure 5 This is a schematic flowchart illustrating an interventional pump braking control method according to an exemplary embodiment. The method comprises, as follows: Figure 1 The controller in the illustrated ventricular assist device is activated. For example... Figure 5 As shown, the intervention pump braking control method may include the following steps:

[0084] Step 501: In response to the emergency braking command information for the intervention pump, control the first drive module to stop outputting control signals to the drive motor.

[0085] In this embodiment of the application, after the controller receives the emergency braking command information for the intervention pump, the controller can immediately stop outputting control signals to the drive motor. At this time, the drive motor cannot stop immediately due to inertia and will generate an induced electromotive force by cutting the magnetic field lines.

[0086] Step 502: With the control signal output to the drive motor stopped, the target control parameters of the flushing pump are updated to the first target data.

[0087] Step 503: Control the flushing pump to operate according to the first target data in order to consume the electrical energy generated during the braking process of the intervention pump.

[0088] After the controller updates the first target data of the flushing pump, the first target data can indicate the new working state of the flushing pump. The second drive module can drive the flushing pump to the updated working state according to the first target data, so as to consume the induced electrical energy generated by the drive motor as soon as possible.

[0089] exist Figure 5 In the intervention pump braking control method shown, the controller can update the target control parameters of the flushing pump in a timely manner after braking the drive motor, thereby minimizing the impact of changes in the target control parameters on the flushing pump while ensuring the rapid consumption of electrical energy generated by the drive motor.

[0090] Figure 6 This is a schematic flowchart illustrating an interventional pump braking control method according to an exemplary embodiment. The method comprises, as follows: Figure 1 The controller in the illustrated ventricular assist device is activated. For example... Figure 6 As shown, the intervention pump braking control method may include the following steps:

[0091] Step 601: In response to the emergency braking command information for the intervention pump, update the target control parameters of the flushing pump to the first target data.

[0092] Step 602: Control the operation of the flushing pump according to the first target data.

[0093] In this embodiment, when the controller receives an emergency braking command for the intervention pump, it first updates the target control parameters of the flushing pump to the first target data. For example, the first target data is parameter data indicating an increase in the operating current of the flushing pump. Based on the update of the first target data, the second drive module can increase the upper limit of the current output to the flushing pump motor.

[0094] Step 603: Brake the drive motor to consume the electrical energy generated during emergency braking of the intervention pump via the flushing pump.

[0095] Optionally, when the target control parameters of the flushing pump are updated to the first target data, that is, when the driving parameters of the flushing pump change, the controller can stop the first driving module from driving the aforementioned driving motor. At this time, the driving motor generates the aforementioned induced current, and the driving parameters of the flushing pump have changed. For example, the upper limit of the current output by the second driving module to the flushing pump motor is increased. Therefore, when the induced current flows to the second driving module through the second branch, it can be output to the flushing pump motor by the second driving module in a timely manner. The flushing pump can start to consume the aforementioned induced current in a very short time, reducing the braking time of the intervention pump.

[0096] exist Figure 6 In the intervention pump braking control method shown, the controller can perform two actions in parallel after responding to the intervention pump braking command: one is to update the target control parameters of the flushing pump, and the other is to brake the drive motor. Therefore, it is not necessary to wait for the brake motor to be braked before updating the target control parameters of the flushing pump. The target control parameters of the flushing pump can be updated in advance, waiting to consume the induced current generated when the brake drive motor is braked. Once the drive motor brakes and generates induced current, the flushing pump can directly consume the induced current, reducing the time from braking to complete stop of the drive motor.

[0097] This application does not impose a sequential restriction on the two actions of braking drive motor and updating target control parameters; the configuration can be selected according to the actual situation.

[0098] Furthermore, the aforementioned target control parameters may also include indicators for the state of the circuit formed by the flushing pump and the power supply module. The first target data includes a disconnection flag, at which point the controller can disconnect the circuit formed by the power supply module and the flushing pump based on the first target data.

[0099] When the target control parameters of the flushing pump are modified to the first target data, the controller can disconnect the circuit formed by the power supply module and the flushing pump relative to the original target control parameters. At this time, the electrical energy consumed by the flushing pump during operation is entirely provided by the electromagnetic induction process of the intervention pump, which can greatly improve the power consumption rate of the intervention pump.

[0100] In one possible implementation, please refer to Figure 7 The diagram illustrates a structural schematic of a ventricular assist device according to an embodiment of this application. Figure 7 As shown, the flushing pump of the ventricular assist device includes an infusion pump and a circulation pump; the infusion pump and the circulation pump respectively form a circuit with the power supply module; the infusion pump is used to pump flushing fluid into the interventional pump, for example, to deliver flushing fluid from the infusion bag to the drive catheter handle in the interventional pump, and the flushing fluid enters the target body through the catheter of the interventional pump under the pumping of the infusion pump; the circulation pump is used to drive the flushing fluid to circulate between the interventional pump and the flushing tubing.

[0101] Specifically, under the pumping of the infusion pump, the flushing fluid reaches the circulation pump through the flushing line. The circulation pump continues to pump the flushing fluid into the drive catheter handle. After entering the drive catheter handle, part of the flushing fluid enters the catheter of the intervention pump and enters the target body. The flow rate of this part is the same as that of the infusion pump. The other part is pumped back to the flushing line and is continued to be pumped into the drive catheter handle by the circulation pump. In other words, the circulation pump is used to drive part of the flushing fluid to circulate between the intervention pump and the flushing line in order to cool down the driven rotor in the drive catheter handle.

[0102] At this time, the controller can drive the infusion pump and / or circulation pump to operate based on the first target data and the induced current, so as to consume the induced current through the infusion pump and / or circulation pump.

[0103] In the case where the flushing pump includes an infusion pump and a circulation pump, and the second drive module includes an infusion pump drive module and a flushing pump drive module, the controller can select at least one of them to update the target control parameters. Since the infusion pump and the circulation pump both form a circuit with the power supply module, and the infusion pump drive module and the flushing pump drive module are both connected in parallel with the first drive module, each of them can receive the electrical energy generated by the drive motor due to electromagnetic induction. Therefore, the first target data can be parameter data for adjusting the control parameters of at least one of the infusion pump and the circulation pump, so that at least one of the infusion pump and the circulation pump consumes the induced current.

[0104] Optionally, since the circulation pump is used to drive the flushing fluid to circulate in the drive tube handle, the flow rate of the circulation pump only determines the flushing fluid circulation flow rate and does not affect the amount of flushing fluid entering the human body. Therefore, it will not have a significant impact on the human body. Thus, it is preferable to use the circulation pump to consume the induced current, for example, by increasing the circulation pump flow rate, thereby using the circulation pump to consume the induced current and avoiding the burden and impact of increasing the amount of flushing fluid inside the target body.

[0105] In an embodiment that utilizes a circulating pump to consume induced current, the infusion pump is maintained in operation, and the circulating pump is driven based on the supply current and induced current to consume the induced current through the circulating pump. The supply current refers to the current supplied by the power supply module to the flushing pump.

[0106] In this embodiment, the emergency braking command information for the interventional pump can be generated when an emergency situation is detected affecting the interventional pump, such as an abnormality in the target object, a problem with the operation of the interventional pump, or an active emergency braking of the interventional pump by the user for special reasons. The emergency braking command information includes, but is not limited to: a first braking command triggered when physiological monitoring data is abnormal, a second braking command triggered based on an emergency braking operation, and a third braking command triggered when the ventricular assist device is malfunctioning.

[0107] Abnormalities indicated by abnormal physiological monitoring data include, but are not limited to, abnormal blood pressure, chordae tendineae entanglement in the impeller, aspiration, and other abnormalities.

[0108] In one possible implementation, the interventional pump includes a pressure sensor; the controller can monitor the blood pressure of the target object through the pressure sensor; when the blood pressure of the target object reaches a pressure threshold, a first braking command is generated.

[0109] When the pressure sensor in the interventional pump detects that the blood pressure of the target object has reached the pressure threshold, it means that the target object's body is in an emergency. At this time, the interventional pump is immediately braked to stop pumping blood and a corresponding alarm signal is issued to indicate that the target object's physical condition is abnormal.

[0110] In one possible implementation, the controller monitors the data of the drive motor in real time, such as parameters like current, speed, and torque. When the monitored data meets the alarm rules corresponding to abnormal physiological conditions, it generates the first braking command.

[0111] For example, the controller also monitors the torque of the interventional pump. Since the interventional pump operates in the heart, there may be situations where the pump impeller gets caught in the chordae tendineae tissue in the heart, causing heart damage. In such cases, the relevant data of the drive motor may change abruptly, such as an increase in current. At this time, an emergency braking command is generated for the interventional pump to reduce the possibility of damage to the target body.

[0112] In addition to the ventricular assist device automatically monitoring the target's physical condition and generating emergency braking command information when an abnormality is detected, the device operator can also actively intervene in the emergency braking pump through the human-machine interface module on the ventricular assist device.

[0113] In one possible implementation, the ventricular assist device is equipped with an emergency braking control; the user's triggering operation of the emergency braking control is equivalent to issuing a second braking command.

[0114] Optionally, the emergency braking control includes, but is not limited to, a physical button on the ventricular assist device; the triggering operation includes, but is not limited to, a pressing operation.

[0115] The ventricular assist device can be equipped with a physical emergency stop button. When the user presses this button, an emergency braking command message is generated for the interventional pump.

[0116] Optionally, the ventricular assist device is equipped with a display module; the display module shows a user interface; and the user interface includes the emergency braking control.

[0117] In another possible implementation, the controller can detect relevant parameters of the ventricular assist device to determine whether the ventricular assist device is operating abnormally, such as detecting that the drive current or drive motor temperature exceeds a threshold, and triggering the aforementioned third braking command.

[0118] This application does not limit the triggering method for the emergency braking information of the interventional pump; triggering conditions can be set according to actual conditions. By combining the above-mentioned various manual and automatic triggering of emergency braking command information, the interventional pump can be braked in an emergency, thereby improving the safety of the interventional pump.

[0119] In summary, the ventricular assist device involved in this application includes a power supply module, an interventional pump, and an flushing pump. The interventional pump and the flushing pump are connected in parallel and form circuits with the power supply module respectively. If an emergency braking command is received for the interventional pump, the target control parameters of the flushing pump can be updated to the first target data, thereby controlling the working current of the flushing pump during operation. This allows the electrical energy generated by electromagnetic induction during emergency braking of the interventional pump to be quickly consumed by the flushing pump, thereby reducing the braking time of the interventional pump.

[0120] This application also provides a ventricular assist device, which includes a controller, a power supply module, a drive motor, an interventional pump, and an irrigation pump; the drive motor is coupled to the interventional pump to drive the interventional pump to rotate; the irrigation pump is used to deliver irrigation fluid to the interventional pump; the drive motor is connected in parallel with the irrigation pump, the drive motor is connected to the power supply module through a first branch, and the irrigation pump is connected to the power supply module through a second branch;

[0121] The controller is used for:

[0122] In response to an emergency braking command message for the intervention pump, the drive motor is controlled to brake, and the target control parameters of the flushing pump are updated to first target data; the first target data is used to indicate that the flushing pump consumes the induced current generated by the drive motor, the induced current being generated based on the relative rotation between the drive motor and the intervention pump;

[0123] During the emergency braking phase of the intervention pump, the flushing pump is controlled to operate based on the first target data and the induced current; wherein the induced current flows into the flushing pump through the second branch.

[0124] Figure 8This is a structural block diagram illustrating an interventional pump braking control device according to an exemplary embodiment. The device is applied to a ventricular assist device, which includes a power supply module, a drive motor, an interventional pump, and a flushing pump. The drive motor is coupled to the interventional pump to drive its rotation. The flushing pump delivers flushing fluid to the interventional pump. The drive motor is connected in parallel with the flushing pump, and the drive motor is connected to the power supply module via a first branch, while the flushing pump is connected to the power supply module via a second branch.

[0125] The interventional pump braking control device includes:

[0126] The parameter update module 801 is used to brake the drive motor in response to an emergency braking command message for the intervention pump, and to update the target control parameters of the flushing pump to first target data; the first target data is used to indicate that the flushing pump consumes the induced current generated by the drive motor, the induced current being generated based on the relative rotation between the drive motor and the intervention pump;

[0127] The pump control module 802 is used to drive the flushing pump to work based on the first target data and the induced current during the emergency braking phase of the intervention pump; wherein the induced current flows into the flushing pump through the second branch.

[0128] In one embodiment, the target control parameter includes at least one of torque, speed, flow rate, and set operating current, and the first target data includes at least one of first target torque, first target speed, first target flow rate, and first target operating current, and the first target data is greater than or equal to the second target data corresponding to the target control parameter before emergency braking.

[0129] In one embodiment, the pump control module 802 is specifically used to control the flushing pump to operate based on the power supply current and the induced current, with the target control parameters reaching the first target data as the target, or to control the flushing pump to operate based on the induced current, wherein the power supply current refers to the current supplied by the power supply module to the flushing pump.

[0130] In one embodiment, the intervention pump braking control device is further configured to determine the current data corresponding to the target control parameter; and control the input of the power supply current based on the current data corresponding to the target control parameter and the first target data.

[0131] In one embodiment, the target control parameters include a power supply current target control parameter, the first target data includes power supply current target data, and the pump control module 802 is specifically used to: reduce or stop the power supply current of the power supply module to the flushing pump based on the power supply current target data; drive the flushing pump to work based on the reduced power supply current and the induced current, or drive the flushing pump to work based on the induced current.

[0132] In one embodiment, the flushing pump includes an infusion pump and a circulation pump; the infusion pump and the circulation pump respectively form a circuit with the power supply module; the infusion pump is used to pump flushing fluid into the interventional pump, and the flushing fluid enters the target body through the conduit of the interventional pump under the pumping of the infusion pump; the circulation pump is used to drive the flushing fluid to circulate between the interventional pump and the flushing pipeline.

[0133] The pump control module 802 is specifically used to drive the infusion pump and / or the circulation pump to work based on the first target data and the induced current, so as to consume the induced current through the infusion pump and / or the circulation pump.

[0134] In one embodiment, the pump control module 802 is specifically used to maintain the working state of the infusion pump and drive the circulation pump to work based on the power supply current and the induced current, so as to consume the induced current through the circulation pump. The power supply current refers to the current supplied by the power supply module to the flushing pump.

[0135] In one embodiment, the emergency braking command information includes at least one of: a first braking command triggered when physiological monitoring data is abnormal, a second braking command triggered based on emergency braking operation, and a third braking command triggered when the ventricular assist device is malfunctioning.

[0136] In summary, the ventricular assist device involved in this application includes a controller, a power supply module, an interventional pump, and an irrigation pump. The interventional pump and the irrigation pump are connected in parallel and form circuits with the power supply module respectively. If an emergency braking command is received for the interventional pump, the target control parameters of the irrigation pump can be updated to the first target data, thereby controlling the working current of the irrigation pump during operation. This allows the electrical energy generated by electromagnetic induction during emergency braking of the interventional pump to be consumed by the irrigation pump more quickly, thereby reducing the emergency braking time of the interventional pump.

[0137] This invention also provides a computer device having the above-described features. Figure 8 The motor control device shown.

[0138] Please see Figure 9 , Figure 9This is a schematic diagram of the structure of a computer device provided in an embodiment of this application, such as... Figure 9 As shown, the computer device includes one or more processors 10, memory 20, and interfaces for connecting the components, including high-speed interfaces and low-speed interfaces. The components communicate with each other via different buses and can be mounted on a common motherboard or otherwise installed as needed. The processors can process instructions executed within the computer device, including instructions stored in or on memory to display graphical information of a GUI on external input / output devices (such as display devices coupled to the interfaces). In some alternative implementations, multiple processors and / or multiple buses can be used with multiple memories and multiple memory modules, if desired. Similarly, multiple computer devices can be connected, each providing some of the necessary operations (e.g., as a server array, a group of blade servers, or a multiprocessor system). Figure 9 Take a processor 10 as an example.

[0139] Processor 10 may be a central processing unit, a network processor, or a combination thereof. Processor 10 may further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The programmable logic device may be a complex programmable logic device (CAMP), a field-programmable gate array (FPGA), a general-purpose array logic (GDA), or any combination thereof.

[0140] The memory 20 stores instructions executable by at least one processor 10 to cause the at least one processor 10 to perform the method shown in the above embodiments.

[0141] The memory 20 may include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on the use of the computer device as shown by a landing page for an app. Furthermore, the memory 20 may include high-speed random access memory and may also include non-transitory memory, such as at least one disk storage device, flash memory device, or other non-transitory solid-state storage device. In some alternative embodiments, the memory 20 may optionally include memory remotely located relative to the processor 10, which can be connected to the computer device via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0142] The memory 20 may include volatile memory, such as random access memory; the memory may also include non-volatile memory, such as flash memory, hard disk or solid-state drive; the memory 20 may also include a combination of the above types of memory.

[0143] The computer device also includes a communication interface 30 for communicating with other devices or communication networks.

[0144] Figure 10 A schematic diagram of the emergency braking process of the interventional pump is shown. The execution process of the above ventricular assist device, control device, or computer equipment during interventional pump braking includes:

[0145] Determine if the interventional pump is started; if the interventional pump is started, determine if the system is operating normally; determine if a stop or alarm-triggered stop drive motor (BLDC) command has been received; if a command is received, enable the second set of control parameters (i.e., the first target data mentioned above, the first set of control parameters can be the second target data mentioned above) to increase the stepper motor (flushing pump motor) drive current and enable drive, and stop the signal output of the interventional pump drive motor.

[0146] In one exemplary embodiment, a computer-readable storage medium is also provided for storing at least one computer program, which is loaded and executed by a processor to implement all or part of the steps in the above-described method. For example, the computer-readable storage medium may be a read-only memory (ROM), a random access memory (RAM), a compact disc read-only memory (CD-ROM), magnetic tape, floppy disk, or optical data storage device, etc.

[0147] In one exemplary embodiment, a computer program product or computer program is also provided, comprising computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the aforementioned actions. Figures 4 to 6 All or part of the steps of the method shown in any embodiment.

[0148] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0149] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A computer device, characterized in that, The computer equipment is used in a ventricular assist device, which includes a power supply module, a drive motor, an interventional pump, and an irrigation pump. The drive motor is coupled to the interventional pump to drive the interventional pump to rotate. The irrigation pump is used to deliver irrigation fluid to the interventional pump. The drive motor is connected in parallel with the irrigation pump. The drive motor is connected to the power supply module through a first branch, and the irrigation pump is connected to the power supply module through a second branch. The computer device includes a processor and a memory, the memory storing at least one instruction, which is loaded by the processor and executed in the following steps: In response to the emergency braking command information for the intervention pump, the drive motor is braked, and the target control parameters of the flushing pump are updated to the first target data; The first target data is used to indicate that the flushing pump consumes the induced current generated by the drive motor, the induced current being generated based on the relative rotation between the drive motor and the intervention pump; During the emergency braking phase of the intervention pump, the flushing pump is driven to operate based on the first target data and the induced current; wherein the induced current flows into the flushing pump through the second branch.

2. The computer device according to claim 1, characterized in that, The computer device includes the controller in the ventricular assist device.

3. The computer device according to claim 1, characterized in that, The target control parameter includes at least one of torque, speed, flow rate, and set operating current. The first target data includes at least one of first target torque, first target speed, first target flow rate, and first target operating current. The first target data is greater than or equal to the second target data corresponding to the target control parameter before emergency braking.

4. The computer device according to claim 3, characterized in that, The step of driving the flushing pump based on the first target data and the induced current includes: With the goal of achieving the first target data using the target control parameters, the flushing pump is controlled to operate based on the supply current and the induced current, or the flushing pump is controlled to operate based on the induced current, wherein the supply current refers to the current supplied by the power supply module to the flushing pump.

5. The computer device according to claim 4, characterized in that, The computer device is also used for: Determine the current data corresponding to the target control parameter; The input of the power supply current is controlled according to the current data corresponding to the target control parameters and the first target data.

6. The computer device according to claim 1, characterized in that, The target control parameters include target control parameters for the power supply current, the first target data includes target data for the power supply current, and the step of driving the flushing pump based on the first target data and the induced current includes: Based on the target power supply current data, reduce or stop the power supply current of the power supply module to the flushing pump; The flushing pump is driven based on the reduced supply current and the induced current, or the flushing pump is driven based on the induced current.

7. The computer device according to claim 1, characterized in that, The flushing pump includes an infusion pump and a circulation pump; the infusion pump and the circulation pump respectively form a circuit with the power supply module; the infusion pump is used to pump flushing fluid into the interventional pump, and the flushing fluid enters the target body through the catheter of the interventional pump under the pumping of the infusion pump; the circulation pump is used to drive the flushing fluid to circulate between the interventional pump and the flushing pipeline. The step of driving the flushing pump based on the first target data and the induced current includes: Based on the first target data and the induced current, the infusion pump and / or the circulation pump are driven to operate, so as to consume the induced current through the infusion pump and / or the circulation pump.

8. The computer device according to claim 7, characterized in that, The step of driving the infusion pump and / or the circulation pump based on the first target data and the induced current includes: The infusion pump is maintained in operation, and the circulation pump is driven to operate based on the supply current and the induced current, so that the induced current is consumed through the circulation pump. The supply current refers to the current supplied by the power supply module to the flushing pump.

9. The computer device according to any one of claims 1 to 8, characterized in that, The emergency braking command information includes at least one of the following: a first braking command triggered when physiological monitoring data is abnormal, a second braking command triggered based on emergency braking operation, and a third braking command triggered when the ventricular assist device is malfunctioning.

10. A braking control device for an interventional pump, characterized in that, The device is applied to a ventricular assist device, which includes a power supply module, a drive motor, an interventional pump, and an irrigation pump. The drive motor is coupled to the interventional pump to drive the interventional pump to rotate. The irrigation pump is used to deliver irrigation fluid to the interventional pump. The drive motor is connected in parallel with the irrigation pump. The drive motor is connected to the power supply module through a first branch, and the irrigation pump is connected to the power supply module through a second branch. The interventional pump braking control device includes: The parameter update module is used to brake the drive motor in response to an emergency braking command message for the intervention pump, and to update the target control parameters of the flushing pump to first target data; the first target data is used to indicate that the flushing pump consumes the induced current generated by the drive motor, the induced current being generated based on the relative rotation between the drive motor and the intervention pump; A pump control module is used to drive the flushing pump to operate based on the first target data and the induced current during the emergency braking phase of the intervention pump; wherein the induced current flows into the flushing pump through the second branch.

11. A ventricular assist device, characterized in that, The ventricular assist device includes a controller, a power supply module, a drive motor, an interventional pump, and an irrigation pump; the drive motor is coupled to the interventional pump to drive the interventional pump to rotate; the irrigation pump is used to deliver irrigation fluid to the interventional pump; the drive motor is connected in parallel with the irrigation pump, the drive motor is connected to the power supply module through a first branch, and the irrigation pump is connected to the power supply module through a second branch; The controller is used for: In response to the emergency braking command information for the intervention pump, the drive motor is controlled to brake, and the target control parameters of the flushing pump are updated to the first target data; The first target data is used to indicate that the flushing pump consumes the induced current generated by the drive motor, the induced current being generated based on the relative rotation between the drive motor and the intervention pump; During the emergency braking phase of the intervention pump, the flushing pump is controlled to operate based on the first target data and the induced current; wherein the induced current flows into the flushing pump through the second branch.

12. The apparatus according to claim 11, characterized in that, The first branch includes a first drive module, and the second branch includes a second drive module; the first drive module and the second drive module are connected in parallel to the power supply module. The first drive module and the second drive module are respectively connected to the controller.

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