CN211096484U - Blood pump control circuit and ventricle auxiliary device - Google Patents
Blood pump control circuit and ventricle auxiliary device Download PDFInfo
- Publication number
- CN211096484U CN211096484U CN201921100942.1U CN201921100942U CN211096484U CN 211096484 U CN211096484 U CN 211096484U CN 201921100942 U CN201921100942 U CN 201921100942U CN 211096484 U CN211096484 U CN 211096484U
- Authority
- CN
- China
- Prior art keywords
- blood pump
- control chip
- main control
- control circuit
- auxiliary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a blood pump control circuit and ventricle auxiliary device. Wherein, blood pump control circuit includes: the main control circuit is connected with the blood pump and is used for driving the blood pump to work according to the target rotating speed; and the auxiliary control circuit is connected with the main control circuit and the blood pump and is used for driving the blood pump to work according to the target rotating speed when the working state of the main control circuit is detected to be an abnormal working state. Through the utility model discloses, can in time change the blood pump, reach the technological effect that improves the reliability of controlling the blood pump.
Description
Technical Field
The utility model relates to a control field particularly, relates to a blood pump control circuit and ventricular auxiliary device.
Background
At present, the controller of the ventricular assist device mainly has the function of driving a blood pump to operate, and if the controller is abnormal, the blood pump cannot be driven, so that the life of a patient is threatened.
The conventional controller generally adopts a standby controller to solve the problem of possible controller abnormality, and when the controller in use fails, the current controller is manually switched to the standby controller. Reliable fault detection and manual assistance are required for the switching, so that the risk of untimely replacement exists when the blood pump is controlled, and the reliability of controlling the blood pump is low. Therefore, accidents are easily caused under the conditions that the main controller is abnormal and the manual replacement is not timely.
Aiming at the problem of low reliability of controlling a blood pump in the prior art, an effective solution is not provided at present.
SUMMERY OF THE UTILITY MODEL
A primary object of the present invention is to provide a blood pump control circuit and a ventricular assist device, which can solve the problem of low reliability of controlling the blood pump.
In order to achieve the above object, according to another aspect of the present invention, a blood pump control circuit is provided. This blood pump control circuit includes: the main control circuit is connected with the blood pump and is used for driving the blood pump to work according to the target rotating speed; and the auxiliary control circuit is connected with the main control circuit and the blood pump and is used for driving the blood pump to work according to the target rotating speed when the working state of the main control circuit is detected to be an abnormal working state.
Optionally, the main control circuit comprises: the main control chip is used for sending a first control signal; and the main driving module is connected with the main control chip and the blood pump and used for responding to the first control signal and driving the blood pump to work according to the target rotating speed.
Optionally, the auxiliary control circuit comprises: and the auxiliary control chip is connected with the main control chip and is used for detecting the working state of the main control chip of the main control circuit, or the working state of the main driving module, or the working state of the blood pump.
Optionally, the auxiliary control circuit further comprises: and the auxiliary driving module is connected with the auxiliary control chip and the blood pump and used for responding to a second control signal sent by the auxiliary control chip and driving the blood pump to work according to the target rotating speed.
Optionally, the blood pump control circuit further comprises: and the auxiliary alarm circuit is connected with the auxiliary control chip and used for sending a first alarm signal that the working state of the main control chip is an abnormal working state and a second alarm signal that the working state of the main drive module is an abnormal working state.
Optionally, the blood pump control circuit further comprises: and the storage module is connected with the auxiliary control chip and used for storing the working information of the auxiliary control chip.
Optionally, the storage module is connected to the main control chip and is configured to store the working information of the main control chip.
Optionally, the blood pump control circuit further comprises: and the clock calibration module is connected with the auxiliary control chip and used for calibrating the clock signal of the auxiliary control chip.
Optionally, the clock calibration module is connected to the main control chip and configured to calibrate a clock signal of the main control chip.
Optionally, the blood pump control circuit further comprises: and the main alarm circuit is connected with the main control chip and is used for sending a third alarm signal that the working state of the auxiliary control chip is an abnormal working state.
In order to achieve the above object, according to another aspect of the present invention, there is provided a ventricular assist device, which includes the blood pump control circuit according to an embodiment of the present invention.
Through the utility model discloses, blood pump control circuit includes: the main control circuit is connected with the blood pump and is used for driving the blood pump to work according to the target rotating speed; and the auxiliary control circuit is connected with the main control circuit and the blood pump and is used for driving the blood pump to work according to the target rotating speed when the working state of the main control circuit is detected to be an abnormal working state. That is to say, detect the operating condition of main control circuit through auxiliary control circuit, in case detect that main control circuit has appeared unusual operating condition, then drive the blood pump through auxiliary control circuit immediately, make its normal operating, when having avoided the controller that is using to break down, because need switch over the present controller to the standby controller through the manual work, make the unable in time change that exists of controlling the blood pump, thereby reached the purpose of in time changing the blood pump, the technical problem that the reliability that controls the blood pump is low is solved, the technical effect of the reliability that has reached the improvement and is controlled the blood pump.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:
fig. 1 is a schematic diagram of a blood pump control circuit according to an embodiment of the present invention; and
FIG. 2 is a schematic view of a ventricular assist device according to an embodiment of the present invention;
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises" and "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a system, article, or apparatus that comprises a list of elements is not necessarily limited to those elements explicitly listed, but may include other elements not expressly listed or inherent to such system, article, or apparatus.
Example 1
The embodiment of the utility model provides a blood pump control circuit.
Fig. 1 is a schematic diagram of a blood pump control circuit according to an embodiment of the present invention. As shown in fig. 1, the blood pump control circuit 10 includes: a main control circuit 11 and an auxiliary control circuit 12.
And the main control circuit 11 is connected with the blood pump and used for driving the blood pump to work according to the target rotating speed.
In this embodiment, the blood pump control circuit is a dual-redundancy control circuit for controlling the blood pump, that is, a dual-redundancy blood pump control circuit, and includes a main control circuit 11, and the main control circuit 11, that is, a main control drive circuit, has a drive function for driving the blood pump, and can drive the blood pump to operate at a target rotation speed, where the target rotation speed may be a preset specified rotation speed, and the blood pump is a pump body for realizing a blood pumping function.
Alternatively, the monitoring device communicates with the main control circuit 11 through a communication module, and sends a command for adjusting the rotation speed of the blood pump, a command for reading data, and the like to the main control circuit 11, which is not limited herein. The main control circuit 11 can process the instruction sent by the monitoring device through the communication module, and can read the clock information at regular time. The monitoring equipment and the blood pump belong to peripheral equipment of a blood pump control circuit.
And the auxiliary control circuit 12 is connected with the main control circuit 11 and the blood pump and is used for driving the blood pump to work according to a target rotating speed when detecting that the working state of the main control circuit 11 is an abnormal working state.
The blood pump control circuit of this embodiment may further include an auxiliary control circuit 12, and the auxiliary control circuit 12, that is, an auxiliary control drive circuit, performs timing communication with the main control circuit 11 in a normal operating state, and may send an inquiry command to the main control circuit 11 at regular intervals to detect whether the operating state of the main control circuit 11 is an abnormal operating state. The auxiliary control circuit 12 and the main control circuit 11 may communicate with each other through a bus, which may be a CAN bus, a 485 bus, or other industrial buses, and is not limited herein.
Alternatively, the auxiliary control circuit 12 of this embodiment may determine whether the operating state of the main control circuit 11 is an abnormal operating state according to a feedback signal of an inquiry command sent by the main control circuit 11 to the auxiliary control circuit 12 when detecting whether the operating state of the main control circuit 11 is an abnormal operating state, for example, in a case where the auxiliary control circuit 12 does not receive the feedback signal of the inquiry command by the main control circuit 11 for a long time, the operating state of the main control circuit 11 is determined to be an abnormal operating state.
Under the condition that the working state of the main control circuit 11 is an abnormal working state, the main control circuit 11 cannot continuously drive the blood pump to work according to the target rotating speed, at this time, the driving function for driving the blood pump is switched from the main control circuit 11 to the auxiliary control circuit 12, that is, the auxiliary control circuit 12 has the right of robbing the main control circuit 11 of the driving control function, so that the auxiliary control circuit 12 can drive the blood pump to work according to the target rotating speed, and the dangers that the blood pump stops rotating and can not supply blood are avoided.
When the auxiliary control circuit 12 detects that the operating state of the main control circuit 11 is the normal operating state, for example, the auxiliary control circuit 12 receives a feedback signal of the main control circuit 11 to the polling command, and determines that the operating state of the main control circuit 11 is the normal operating state, the auxiliary control circuit 12 may continue to send the polling command to the main control circuit 11 in the next cycle to detect whether the operating state of the main control circuit 11 is the abnormal operating state.
Optionally, the monitoring device of this embodiment also communicates with the auxiliary control circuit 12 through the communication module, and can access the auxiliary control circuit 12.
Alternatively, the main control circuit 11 of this embodiment operates in the slave mode, and the auxiliary control circuit 12 operates in the master mode.
In this embodiment, the blood pump control circuit is connected to the blood pump through the main control circuit 11, and drives the blood pump to operate at a target rotation speed, and is connected to the main control circuit 11 and the blood pump through the auxiliary control circuit 12, and is configured to drive the blood pump to operate at the target rotation speed when detecting that the operating state of the main control circuit is an abnormal operating state. That is to say, detect the operating condition of main control circuit 11 through auxiliary control circuit 12, in case detect main control circuit 11 and appeared unusual operating condition, then drive the blood pump through auxiliary control circuit 12 immediately, make its normal operating, avoided because when the controller that is using breaks down, need switch over the present controller to the standby controller through the manual work, make the unable in time change that exists of controlling the blood pump, thereby reached the purpose of in time changing the blood pump, solved the technical problem that the reliability that controls the blood pump is low, reached the technological effect of improving the reliability of controlling the blood pump.
The main control circuit of this embodiment is further described below.
Optionally, the main control circuit comprises: the main control chip is used for sending a first control signal; and the main driving module is connected with the main control chip and the blood pump and used for responding to the first control signal and driving the blood pump to work according to the target rotating speed.
In this embodiment, the main control circuit includes a main control chip, and the main control circuit may be connected to the communication module through the main control chip to receive an instruction sent by the monitoring device to the main control circuit through the communication module to adjust the rotation speed of the blood pump, an instruction to read data, and the like. Optionally, the main control chip of this embodiment may be a Digital Signal Processor (DSP), a single chip, or other microcontrollers, and the like, which is not limited herein.
The main control circuit of this embodiment may further include a main drive module, and the main drive module is connected to the main control chip and the blood pump, and is configured to receive a first control signal sent by the main control chip when the operating state of the main control chip is the normal operating state, and drive the blood pump to operate at the target rotational speed in response to the first control signal, that is, the main control chip and the main drive module of this embodiment are both configured to drive the blood pump to operate at the target rotational speed.
The auxiliary control circuit of this embodiment is further described below.
Optionally, the auxiliary control circuit comprises: the auxiliary control chip is connected with the main control chip and is used for detecting the working state of the main control chip of the main control circuit, or the working state of the main driving module, or the working state of the blood pump; the auxiliary control circuit further comprises: and the auxiliary driving module is connected with the auxiliary control chip and the blood pump and used for responding to a second control signal sent by the auxiliary control chip and driving the blood pump to work according to the target rotating speed.
In this embodiment, the auxiliary control circuit includes an auxiliary control chip, and the auxiliary control circuit may be connected to the communication module through the auxiliary control chip to receive information sent by the monitoring device to the auxiliary control circuit through the communication module. Optionally, the auxiliary control chip of this embodiment may be a DSP, a single chip, or other microcontroller. The auxiliary control chip and the main control chip of the embodiment are two independent control chips, which may be the same or different.
The auxiliary control chip of this embodiment is used to detect the operating state of the main control chip of the main control circuit or the operating state of the main drive module.
When the working state of the main control chip is detected through the auxiliary control chip, a target signal can be sent to the main control chip at regular time through the auxiliary control chip, the target signal can be an inquiry instruction, and the control chip can send the target signal to the main control chip once every certain period. Under a normal working state, the main control chip responds to the target signal after receiving the target signal, for example, replies to the query instruction. Under the condition that the auxiliary control chip does not receive the response signal sent by the main control chip within a certain time period, or under the condition that the times of sending the target signal to the main control chip by the auxiliary control chip reach the preset times and the response signal sent by the main control chip is still not received, namely, the reply of the main control chip still cannot be obtained after the times of trying, the working state of the main control chip is determined to be an abnormal working state; optionally, if the response signal sent by the main control chip is received within a certain time period by the auxiliary control chip, or if the number of times that the target signal is sent by the auxiliary control chip to the main control chip is less than the predetermined number of times and the response signal sent by the main control chip is received, it is determined that the working state of the main control chip is a normal working state.
Optionally, the main control chip of this embodiment may also determine whether the auxiliary control chip has an abnormal operating state. If the auxiliary control chip does not send the target signal to the main control chip in a preset time period, that is, if the main control chip does not receive the target signal sent by the auxiliary control chip continuously for a long time, it can be determined that the auxiliary control chip has an abnormal working state.
The auxiliary control circuit of this embodiment may further include an auxiliary driving module, where the auxiliary driving module is connected to both the auxiliary control chip and the blood pump, and is configured to receive a second control signal sent by the auxiliary control chip and, in response to the second control signal, drive the blood pump to operate at the target rotational speed, that is, the auxiliary control chip and the auxiliary driving module of this embodiment are used together to drive the blood pump to operate at the target rotational speed.
When the working state of the main driving module is detected through the auxiliary control circuit, if the working state of the main control chip is a normal working state, if the blood pump works abnormally, for example, the blood pump stops running, the main control chip is controlled to be disconnected, the auxiliary driving module is controlled through the auxiliary control chip to drive the blood pump, namely, the auxiliary driving module tries to drive the blood pump, and if the blood pump driven by the auxiliary driving module works normally, the working state of the main driving module can be determined to be an abnormal working state.
This embodiment detects the operating condition of main control chip and is unusual operating condition, perhaps under the operating condition of main drive module is unusual operating condition, through auxiliary control chip control auxiliary drive module, come the drive blood pump to work according to the target rotational speed, that is, auxiliary control chip takes over the control to the blood pump through auxiliary drive module, thereby avoid when main control circuit can't drive the blood pump, the blood pump appears stalling, the danger of unable blood supply, thereby reached the purpose of changing the blood pump in time, the security and the reliability of driving the blood pump have been improved, and then the efficiency of driving the blood pump has been improved.
Under the condition that the working state of the main control chip is a normal working state, after the auxiliary drive module is controlled by the auxiliary control chip to drive the blood pump, if the blood pump driven by the auxiliary drive module still works abnormally, the blood pump fault can be determined, so that measures can be further taken for the blood pump to eliminate the fault. After the blood pump fault is determined, the main control chip is controlled to be switched on, and the auxiliary control chip is controlled to be switched off, so that after the blood pump is relieved from the fault, the main control chip controls the main drive module to drive the blood pump to work according to the target rotating speed, namely, the auxiliary control chip returns the control right for driving the blood pump to the main control chip.
Optionally, the blood pump control circuit further comprises: and the auxiliary alarm circuit is connected with the auxiliary control chip and used for sending a first alarm signal that the working state of the main control chip is an abnormal working state and a second alarm signal that the working state of the main drive module is an abnormal working state.
The blood pump control circuit of the embodiment comprises an auxiliary alarm circuit, which can be an auxiliary acousto-optic alarm circuit and can be controlled by an auxiliary control chip. When the working state of the main control chip is an abnormal working state, the auxiliary alarm circuit sends out a first alarm signal, the first alarm signal is used for indicating that the working state of the main control chip is the abnormal working state, and the first alarm signal can be sound or light so as to achieve the purpose of reminding a user.
The auxiliary alarm circuit of the embodiment is further configured to send out a second alarm signal when the working state of the main driving module is an abnormal working state, where the second alarm signal is used to indicate that the working state of the main driving module is the abnormal working state, and the second alarm signal may be a sound or a light, so as to achieve a purpose of reminding a user.
According to the embodiment, the auxiliary alarm circuit sends the first alarm signal that the working state of the main control chip is the abnormal working state and the second alarm signal that the working state of the main driving module is the abnormal working state, so that the problem that the alarm signal cannot be sent out when the main control chip is in the abnormal working state is solved.
Optionally, the blood pump control circuit further comprises: and the storage module is connected with the auxiliary control chip and used for storing the working information of the auxiliary control chip.
In this embodiment, the blood pump control circuit further includes a storage module, and the auxiliary control chip may store its own working information in the storage module periodically, for example, the auxiliary control chip stores parameters generated during operation in the storage module, and analyzes its performance more than at a later period.
Optionally, the storage module is connected to the main control chip and is configured to store the working information of the main control chip.
The storage module of this embodiment may also be connected to a main control chip, and the main control chip may store its own working information in the storage module periodically, for example, the main control chip stores parameters generated during operation in the storage module, and analyzes its performance later than defecation.
Optionally, the blood pump control circuit further comprises: and the clock calibration module is connected with the auxiliary control chip and used for calibrating the clock signal of the auxiliary control chip.
The blood pump control circuit of the embodiment further comprises a clock calibration module, wherein the auxiliary control chip reads the clock signal in a timing mode, and the clock calibration module can be used for calibrating the clock signal of the auxiliary control chip.
Optionally, the clock calibration module is connected to the main control chip and configured to calibrate a clock signal of the main control chip.
The clock calibration module of the embodiment is further connected with the main control chip, the main control chip reads the clock signal at regular time, and the clock calibration module can be used for calibrating the clock signal of the main control chip.
Alternatively, the memory module and the clock calibration module of this embodiment may be disposed together while being connected to the main control chip and the supplementary control chip.
Optionally, the blood pump control circuit further comprises: and the main alarm circuit is connected with the main control chip and is used for sending a third alarm signal that the working state of the auxiliary control chip is an abnormal working state.
The blood pump control circuit of the embodiment further comprises a main alarm circuit, and the main alarm circuit can be a main acousto-optic alarm circuit and is controlled through a main control chip. And sending a third alarm signal under the condition that the working state of the auxiliary control chip is an abnormal working state, wherein the third alarm signal is used for indicating that the working state of the auxiliary control chip is the abnormal working state, and the third alarm signal can be sound and light so as to achieve the purpose of reminding a user.
According to the embodiment, the main alarm circuit sends the third alarm signal that the working state of the main auxiliary control chip is the abnormal working state, so that the problem that the alarm signal cannot be sent out when the auxiliary control chip is in the abnormal working state is solved.
Optionally, the main control chip of this embodiment compares the operating parameters of the main control chip with the blood pump parameters and the software preset value, and if the operating parameters of the main control chip or the blood pump exceeds the software preset value, the main control chip may control the main alarm circuit to generate an alarm signal.
The main control chip and the auxiliary control chip are redundant modules in a dual-redundancy blood pump control circuit, communication and mutual coordination work are performed among the redundant modules, automatic and timely switching is performed to a standby control drive circuit, the problem that manual switching is not timely when the main control chip in use breaks down is solved, and therefore the purpose of timely replacing the blood pump is achieved, the problem that alarm information cannot be sent out when the main control chip is abnormal is solved, the reliability and the safety of driving the blood pump are improved, and further the efficiency of driving the blood pump is improved.
Example 2
The embodiment of the utility model also provides a ventricular assist device. The ventricular assist device may include the blood pump control circuit of embodiment 1 of the present invention.
In this embodiment, the ventricular assist device consists of an in vivo blood pump and an in vitro electronic control system. Blood pump mainly used realizes the pump blood function, and electrical system mainly comprises controller and supporting power supply unit, and this electrical system can include the utility model discloses blood pump control circuit in embodiment 1.
Example 3
The technical solution of the present invention will be illustrated in detail with reference to the preferred embodiments.
Heart failure is one of the major public health problems worldwide, with an incidence of about 1%. Conventional heart transplant therapy, which usually requires a donor, does not become an immediate and widespread treatment modality. A ventricular assist device is a mechanical assist device that supplies blood to a person when the heart fails to meet the body's blood needs. By mechanically pumping blood and improving tissue perfusion, patients with severe heart failure can be treated.
In the related art, the controller of the ventricular assist device mainly functions to drive the blood pump to operate, and when the controller in use fails, an audible and visual alarm signal is sent to a patient or other personnel, so that the controller is switched to a standby controller in an emergency and manual mode. The switching mode requires reliable failure detection mode and manual assistance. When the main control chip is abnormal, the acousto-optic alarm is abnormal or the manual replacement is not in time, accidents are easily caused.
The ventricular assist device according to embodiments of the present invention will be described below.
Fig. 2 is a schematic diagram of a ventricular assist device according to an embodiment of the present invention. As shown in FIG. 2, the ventricular assist device includes a monitoring device 31, a communication module 32, a main audible and visual alarm circuit 33, a main control chip 34, a storage and clock module 35, an auxiliary control chip 36, an auxiliary audible and visual alarm circuit 37, a main drive module 38, an auxiliary drive module 39, a blood pump 40, and other auxiliary circuits 41 (including membrane key circuits, a power management circuit, a battery charge reading circuit, etc.). Optionally, the ventricular assist device of this embodiment includes a dual-redundancy blood pump control circuit, which includes the above-mentioned main audible and visual alarm circuit 33, main control chip 34, storage and clock module 35, auxiliary control chip 36, auxiliary audible and visual alarm circuit 37, main drive module 38, auxiliary drive module 39, and other auxiliary circuits 41 (including membrane key circuit, power management circuit, battery charge reading circuit, etc.).
In this embodiment, both the monitoring device 31 and the blood pump 40 belong to the peripheral device. The monitoring device 31 communicates with the main control chip 34 and the supplementary control chip 36 through the communication module 32 so that the monitoring device 31 can access the main control chip 34 and the supplementary control chip 36. The main control chip 34 and the auxiliary control chip 36 CAN communicate with each other via a bus, which may be a CAN bus, a 485 bus, or other industrial bus, without limitation. The primary control chip 34 operates in a slave mode and the secondary control chip 36 operates in a master mode.
The main control chip 34 is connected to the main acousto-optic alarm circuit 33, and is used for sending out alarm information detected by the main control chip 34.
The main control chip 34 is connected to a main drive module 38, which together drive a blood pump 40 to operate at a specified rotational speed.
The main control chip 34 is connected with the storage and clock module 35, and the main control chip 34 is used for periodically storing the self information in the storage and clock module 35; the main control chip 34 is implemented to calibrate time by storing the clock in the clock module 35.
The main control chip 34 is connected to other auxiliary circuits 41 for receiving the key switch command of the user, supplying power, reading the battery power, and so on.
The auxiliary control chip 36 is connected to an auxiliary drive module 39, which drives the blood pump 40 to operate at a specified rotational speed under certain conditions.
The auxiliary control chip 36 is connected with the storage and clock module 35, the auxiliary control chip 36 is used for periodically storing self information in the storage and clock module 35, and the auxiliary control chip 36 calibrates time by storing the clock in the clock module 35 when in implementation.
The auxiliary control chip 36 is connected to other auxiliary circuits 41 to complete functions of receiving a key switch command from a user, supplying power, reading battery power, and the like.
The auxiliary control chip 36 is connected to the auxiliary sound-light alarm circuit 37, and is configured to send out alarm information detected by the auxiliary control chip 36.
The main control chip 34 and the auxiliary control chip 36 are two independent control chips, which may be the same or different, and may be DSPs, single-chip microcomputers or other microcontrollers.
Under normal working conditions, the main control chip 34 works in a normal state, and the main drive module 38 drives and controls the pump; the control device receives instructions such as rotating speed adjustment and data reading sent by the monitoring device 31 through the communication module 32, processes corresponding instructions, the main control chip 34 reads clock information at regular time, the main control chip 34 stores data to the storage and clock module 35 at regular intervals, the main control chip 34 compares the condition of driving the blood pump 40 with a software preset value according to the working condition of the main control chip 34, and if the running condition of the main control chip or the running condition of the blood pump 40 exceeds the software preset value, the main control chip 34 generates an alarm signal through the main audible and visual alarm circuit 33.
Under the normal working condition, the auxiliary control chip 36 communicates with the main control chip 34 at regular time, and judges whether the working state of the main control chip 34 is normal according to the feedback information on the main control chip 34, if the main control chip 34 works normally and the main driving module 38 works normally, the auxiliary control chip 36 continues to inquire in the next period. When the main control chip 34 is detected to be abnormal, the blood pump 40 cannot be driven and controlled; the main control chip 34 of this embodiment sends an alarm signal through the main acousto-optic alarm circuit 33. The auxiliary control chip 36 has the highest control authority, and has the right to rob the main control chip 34 of the drive control function.
The following describes the procedures of the blood pump 40 malfunction determination, the main drive module 38 drive abnormality, and the auxiliary control chip 36 operation abnormality of this embodiment.
In this embodiment, if the main control chip 34 is operating normally and the blood pump 40 is not operating normally, the auxiliary control chip 36 continues to operate in the auxiliary control mode, the auxiliary drive module 39 attempts to drive the blood pump 40, if the blood pump 40 is still not operating normally after being driven, the auxiliary control chip 36 determines that the blood pump 40 is malfunctioning, and the auxiliary control chip 36 passes control of the blood pump 40 back to the main control chip 34.
If the auxiliary driving module 39 is trying to drive the blood pump 40, and the blood pump 40 can work normally, the auxiliary control chip 36 determines that the main driving module 38 is abnormally driven, the auxiliary control chip 36 takes the control driving function of the main control chip 34, and sends alarm information for indicating that the main driving module 38 is abnormally driven through the auxiliary sound-light alarm circuit 37. At this time, the auxiliary control chip 36 and the auxiliary driving module 39 can still drive the blood pump 40 to work normally, and the danger of stalling and blood supply failure cannot occur. The auxiliary control chip 36 and the auxiliary driving module 39 constitute a standby control driving circuit.
In this embodiment, if the main control chip 34 is not working normally, the auxiliary control chip 36 cannot receive the reply from the main control chip 34 in time through timing communication, and the reply from the main control chip 34 still cannot be obtained after several attempts, the auxiliary control chip 36 takes over the control of the blood pump 40 through the auxiliary driving module 39, and sends an alarm message for indicating the abnormality of the main control chip 34 through the auxiliary acousto-optic alarm circuit 37. At this time, the auxiliary control chip 36 and the auxiliary driving module 39 can still drive the blood pump 40 to work normally, and the danger of stalling and blood supply failure cannot occur.
In this embodiment, if the auxiliary control chip 36 is abnormally operated, it can be judged by the main control chip 34. Since the inquiry command cannot be sent to the main control chip 34 at regular time after the abnormality of the auxiliary control chip 36. The main control chip 34 judges whether the inquiry command of the auxiliary control chip 36 cannot be received for a long time, if the inquiry command of the auxiliary control chip 36 cannot be received for a long time, the auxiliary control chip 36 is determined to be abnormal, and alarm information for indicating the abnormality of the auxiliary control chip 36 is sent out through the main acousto-optic alarm circuit 33. At this time, the main control chip 34 and the main drive module 38 still drive the blood pump 40 to work normally, and the danger of stalling and blood supply failure does not occur.
According to the embodiment, through the detection processes of the three faults, the dual-redundancy blood pump control circuit has multiple abnormal self-detection means, and the reliability of driving the blood pump is improved.
In this embodiment, the auxiliary control chip has the highest control authority, and has the right to rob the drive control function; under normal conditions, the main control chip and the main driving module drive the blood pump to work; only when the main control chip or the main driving module is determined to be abnormal, the auxiliary control chip and the auxiliary driving module participate in the control process of driving the blood pump; the main control chip and the auxiliary control chip of the embodiment are communicated with each other, whether the other party is in a normal working state or not is determined through the communication condition, the main control chip determines that the auxiliary control chip is abnormal under the condition that the main control chip cannot receive the query instruction sent by the auxiliary control chip, and the auxiliary control chip determines that the main control chip is abnormal under the condition that the auxiliary control chip cannot receive the reply of the main control chip; the main control chip and the auxiliary control chip respectively send alarm information through the corresponding independent acousto-optic alarm circuits, and simultaneously take over the driving work of the blood pump, so that the pump stalling and the blood supply influence are prevented; the auxiliary control chip can detect the state of the blood pump by matching the auxiliary driving module with the main driving module so as to determine whether the blood pump is abnormal or the main driving module is abnormal.
The main control chip and the auxiliary control chip are redundant modules in a dual-redundancy blood pump control circuit, communication and mutual coordination work are performed among the redundant modules, automatic and timely switching is performed to a standby control drive circuit, the problem that manual switching is not timely when the main control chip in use breaks down is solved, and therefore the purpose of timely replacing the blood pump is achieved, the problem that alarm information cannot be sent out when the main control chip is abnormal is solved, the reliability and the safety of driving the blood pump are improved, and further the efficiency of driving the blood pump is improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. A blood pump control circuit, comprising:
the main control circuit is connected with the blood pump and used for driving the blood pump to work according to a target rotating speed;
and the auxiliary control circuit is connected with the main control circuit and the blood pump and is used for driving the blood pump to work according to the target rotating speed when the working state of the main control circuit is detected to be an abnormal working state.
2. The blood pump control circuit of claim 1, wherein the main control circuit comprises:
the main control chip is used for sending a first control signal;
and the main driving module is connected with the main control chip and the blood pump and used for responding to the first control signal and driving the blood pump to work according to the target rotating speed.
3. The blood pump control circuit of claim 2, wherein the auxiliary control circuit comprises:
and the auxiliary control chip is connected with the main control chip and is used for detecting the working state of the main control chip of the main control circuit, or the working state of the main driving module, or the working state of the blood pump.
4. The blood pump control circuit of claim 3, wherein the auxiliary control circuit further comprises:
and the auxiliary driving module is connected with the auxiliary control chip and the blood pump and used for responding to a second control signal sent by the auxiliary control chip and driving the blood pump to work according to the target rotating speed.
5. The blood pump control circuit of claim 3, further comprising:
and the auxiliary alarm circuit is connected with the auxiliary control chip and used for sending a first alarm signal that the working state of the main control chip is the abnormal working state and a second alarm signal that the working state of the main drive module is the abnormal working state.
6. The blood pump control circuit of claim 3, further comprising:
and the storage module is connected with the auxiliary control chip and used for storing the working information of the auxiliary control chip.
7. The blood pump control circuit of claim 6,
the storage module is connected with the main control chip and used for storing the working information of the main control chip.
8. The blood pump control circuit of claim 3, further comprising:
and the clock calibration module is connected with the auxiliary control chip and used for calibrating the clock signal of the auxiliary control chip.
9. The blood pump control circuit of claim 8,
the clock calibration module is connected with the main control chip and used for calibrating the clock signal of the main control chip.
10. The blood pump control circuit according to any of claims 3 to 9, further comprising:
and the main alarm circuit is connected with the main control chip and used for sending a third alarm signal that the working state of the auxiliary control chip is the abnormal working state.
11. A ventricular assist device comprising a blood pump control circuit as claimed in any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921100942.1U CN211096484U (en) | 2019-07-12 | 2019-07-12 | Blood pump control circuit and ventricle auxiliary device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921100942.1U CN211096484U (en) | 2019-07-12 | 2019-07-12 | Blood pump control circuit and ventricle auxiliary device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211096484U true CN211096484U (en) | 2020-07-28 |
Family
ID=71718820
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921100942.1U Active CN211096484U (en) | 2019-07-12 | 2019-07-12 | Blood pump control circuit and ventricle auxiliary device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211096484U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117122811A (en) * | 2023-10-26 | 2023-11-28 | 苏州同心医疗科技股份有限公司 | Self-starting method applied to ventricular assist device system |
-
2019
- 2019-07-12 CN CN201921100942.1U patent/CN211096484U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117122811A (en) * | 2023-10-26 | 2023-11-28 | 苏州同心医疗科技股份有限公司 | Self-starting method applied to ventricular assist device system |
| CN117122811B (en) * | 2023-10-26 | 2024-01-02 | 苏州同心医疗科技股份有限公司 | Self-starting method applied to ventricular assist device system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10773003B2 (en) | System architecture that allows patient replacement of VAD controller/interface module without disconnection of old module | |
| US5560033A (en) | System for providing automatic power control for highly available n+k processors | |
| EP2759039B1 (en) | Control and protection for parallel uninterruptible power supplies | |
| US9566920B2 (en) | Circuit arrangement comprising a monitoring device | |
| CN211096484U (en) | Blood pump control circuit and ventricle auxiliary device | |
| JP7444887B2 (en) | Switch control device and its control method, and robot-assisted surgical device | |
| WO2013058759A1 (en) | Method and apparatus of master selection logic in ups parallel system | |
| CN105305605B (en) | The outage detection and protection system of medical treatment electronic equipment | |
| CN112206410A (en) | Blood pump control circuit, control method and device thereof and ventricular assist device | |
| WO2021120388A1 (en) | Pressure protection circuit, control method, and computer-readable storage medium | |
| CN102835072B (en) | Method for operating a bus control unit, and bus control unit | |
| GB2197739A (en) | Failure alarm device | |
| JP3250397B2 (en) | Uninterruptible power system | |
| JPH10179525A (en) | Fail-safe control system for patient monitor | |
| US9895502B2 (en) | Medical device and method for controlling same | |
| JPH10307635A (en) | Computer system and temperature monitoring method applied to the same system | |
| US20040119341A1 (en) | Battery backup method and system | |
| KR100738572B1 (en) | H-bridge multi-level inverter having a dual controller | |
| JP6947312B2 (en) | Uninterruptible power supply system and uninterruptible power supply | |
| JPH04371133A (en) | At-home medical care control device | |
| US20070173898A1 (en) | Emergency controller for a medical device | |
| CN111831094A (en) | Complete machine power-off and abnormal restarting system | |
| CN114515390A (en) | Defibrillator starting method, defibrillator and computer readable storage medium | |
| JP3248483B2 (en) | Alarm processing device | |
| CN104680033A (en) | Intelligent pension service software system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |