Blood pump power supply system

Abstract

The application provides a blood pump power supply system, which comprises an in-vivo battery module, a wireless power supply device, a state detection module and a system control module, the in-vivo battery module and the wireless power supply device can supply power to the blood pump; the system control module obtains a first parameter of the blood pump through the state detection module to determine the state of the blood pump, the system control module controls the in-vivo battery module and the wireless power supply device to supply power to the blood pump simultaneously when the state of the blood pump is a starting state, and the system control module controls the wireless power supply device to supply power to the blood pump when the state of the blood pump is a stable working state. The cooperation design of the in-vivo battery module and the wireless power supply device can meet the power required by the blood pump in various states, and the rated power required by the blood pump in the stable working state is smaller than the large power required in the starting state, so the power output by the wireless power supply device can be designed to be smaller, thereby the volume design of the wireless power supply device can be reduced, and the volume of the blood pump power supply system as a whole is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical devices, in particular to a blood pump power supply system. BACKGROUND

[0002] The working mechanism of a ventricular assist device is to use a blood pump to do work on blood, thereby assisting blood flow. The present application relates to a full-magnetic suspension heart pump, which is suitable for long-term blood circulation assistance in the end stage of heart failure. In existing cases, the longest application time of the full-magnetic suspension heart pump can reach 10 years, and after the patient implants the product, he completely depends on the artificial blood pump, and the heart pumping capacity of the patient is almost lost. If the blood pump is powered off, it will be fatal to the patient, therefore, providing a stable and reliable power supply for the heart pump for a long time to support the long-term operation of the heart pump is the key to the product.

[0003] In the prior art, power transmission through a percutaneous cable is used, that is, a cable is passed through the skin of the human body to supply power to the blood pump in the human body, but the percutaneous cable wound is prone to infection, which brings inconvenience to the patient and even threatens the patient's life.

[0004] In view of the problem of infection of the percutaneous cable wound, the current alternative charging technology mainly includes wireless charging. In the wireless charging, the transmitting coil is placed outside the body, the receiving coil is placed inside the body, and the transmitting coil and the receiving coil are placed on the two sides of the skin. The transmitting coil outside the body is connected to an external power supply to wirelessly transmit electric energy to the receiving coil inside the body, and the receiving coil is connected to the blood pump to supply power to the blood pump in the human body.

[0005] In addition, in the prior art, a single power supply is used to supply power to the heart pump. For example, in the power transmission through a percutaneous cable, a single external power supply is electrically connected to an external controller, and the external controller is electrically connected to the blood pump through a cable; in the wireless charging process of the transmitting coil and the receiving coil, a single transmitting coil and receiving coil set is used, and the receiving coil is electrically connected to the blood pump to supply power to the blood pump. The starting power required by the blood pump in the pump starting stage is much larger than the rated power required by the blood pump in the long-term normal operation state. When designing the power supply of the blood pump, in order to ensure the normal starting and operation of the blood pump, the maximum output power of the power supply is designed to be greater than the starting power of the blood pump. Therefore, in order to ensure that the power supply can start the blood pump, the output power of the power supply is designed to be very large, which further leads to a large size of the power supply (specifically, a large size of the external battery in the percutaneous cable power supply and a large diameter of the coil in the wireless charging). However, when the blood pump changes from the starting state to the long-term normal operation state, the required rated power is reduced, so the power supply does not need to have a large power.

[0006] Therefore, it is necessary to reasonably design the power supply. On the one hand, the power supply can meet the power supply requirements of the blood pump starting and long-term normal operation; on the other hand, the output power of the power supply can be reasonably designed to minimize the size of the power supply. SUMMARY

[0007] The application provides a blood pump power supply system, which aims to meet the power supply power requirement of the blood pump in the starting stage and the long-time normal operation stage and reduce the power supply volume, so that the blood pump power supply volume is small and the weight is light.

[0008] To solve the above technical problems, the application provides a blood pump power supply system, which comprises:

[0009] An in-vivo battery module, which can supply power to the blood pump;

[0010] A wireless power supply device, which can supply power to the blood pump;

[0011] A state detection module, which is used for detecting a first parameter of the blood pump, and the first parameter comprises a motion state parameter and a position parameter of the blood pump;

[0012] A system control module, which is connected to the state detection module to obtain the first parameter, and the system control module has an active control mode, which is configured to: when the blood pump is in a stable working state, the system control module controls the wireless power supply device to supply power to the blood pump according to the first parameter, and when the blood pump is in a starting state, the system control module controls the in-vivo battery module and the wireless power supply device to supply power to the blood pump at the same time according to an external blood pump starting signal.

[0013] Optionally, the wireless power supply device comprises a ring-shaped iron core, an external transmission coil and an in-vivo receiving coil, the external transmission coil is used for being connected to alternating current, the in-vivo receiving coil is connected to the blood pump, and the external transmission coil and the in-vivo receiving coil are both wound on the ring-shaped iron core.

[0014] Optionally, the wireless power supply device further comprises a transmission driving circuit, which is used for providing alternating current to the external transmission coil, and the output mode of the alternating current of the transmission driving circuit is forward, flyback or push-pull.

[0015] Optionally, the active control mode is further configured to: when the blood pump is in a vibration impact state, the system control module controls the in-vivo battery module and the wireless power supply device to supply power to the blood pump at the same time according to the first parameter.

[0016] Optionally, the state detection module is further used for detecting a second parameter of the blood pump, and the second parameter comprises a current parameter and a voltage parameter of a motor of the blood pump; and the system control module further has a hardware control mode, which is configured to: when the blood pump is in a vibration impact state, the system control module controls the in-vivo battery module and the wireless power supply device to supply power to the blood pump at the same time according to the second parameter.

[0017] Optionally, the system control module executes the hardware control mode when the active control mode fails; wherein the sign of the failure of the active control mode is configured as: the voltage parameter is less than or equal to the minimum working voltage, and / or the falling range of the second parameter exceeds the preset falling range.

[0018] Optionally, the state detection module comprises a current sensor and a voltage sensor.

[0019] Optionally, the system control module is configured to detect the current and voltage of the in-vivo battery module, and detect the current and voltage of the wireless power supply device.

[0020] The system control module controls the wireless power supply device to supply power to the blood pump when the in-vivo battery module is in a failure state; wherein the sign of the failure of the in-vivo battery module is configured as: the current and voltage of the in-vivo battery module are both lower than the respective set threshold values.

[0021] The system control module controls the in-vivo battery module to supply power to the blood pump when the wireless power supply device is in a failure state; wherein the sign of the failure of the wireless power supply device is configured as: the current and voltage of the wireless power supply device are both lower than the respective set threshold values.

[0022] Optionally, the system control module is configured to transmit a failure warning signal to an external controller to feedback that the in-vivo battery module and / or the wireless power supply device is in a failure state.

[0023] Optionally, the blood pump power supply system further comprises a temperature detection module configured to detect the temperature of the wireless power supply device and the temperature of the in-vivo battery module.

[0024] The system control module controls the blood pump to reduce the operating speed and controls the wireless power supply device to reduce the power output to the blood pump when the temperature of the wireless power supply device exceeds a first preset temperature.

[0025] The system control module controls the blood pump to reduce the operating speed and controls the in-vivo battery module to reduce the power output to the blood pump when the temperature of the in-vivo battery module exceeds a second preset temperature.

[0026] Optionally, the in-vivo battery module is at least one group, and the wireless power supply device is at least one.

[0027] Optionally, the system control module can further control the wireless power supply device to charge the in-vivo battery module when the blood pump is in a stable working state.

[0028] Optionally, the blood pump power supply system further comprises a battery power management module, when the in-vivo battery module meets the preset condition, the system control module controls the wireless power supply device to charge the in-vivo battery module.

[0029] The preset condition comprises: the current of the in-vivo battery module is less than a current threshold, and / or the voltage of the in-vivo battery module is less than a voltage threshold.

[0030] Optionally, the blood pump power supply system further comprises a rectification filtering module, which is configured to rectify and filter the current provided by the wireless power supply device and then transmit the current to the in-vivo battery module.

[0031] Optionally, the blood pump power supply module further comprises a voltage stabilizing output module, which is configured to adjust the voltage provided by the in-vivo battery module and / or the wireless power supply device to a preset voltage and then output the voltage to the blood pump.

[0032] Optionally, the state detection module comprises an acceleration sensor, an angular velocity sensor and a position sensor, which are configured to detect the first parameter of the blood pump.

[0033] The blood pump power supply system as above, the in-vivo battery module is implanted in the patient's body together with the blood pump, the in-vivo battery module is wiredly connected to the blood pump to provide power to the blood pump. The transmitting coil of the wireless power supply device is located outside the patient's body, the receiving coil of the wireless power supply device is located inside the patient's body, and the transmitting coil outside the body and the receiving coil inside the body are separated by the skin. The transmitting coil outside the body is connected to an external power source (usually alternating current), and the power is wirelessly transmitted to the receiving coil inside the body. The receiving coil inside the body is wiredly connected to the blood pump, and can provide power to the blood pump 60. The in-vivo battery module and the wireless power supply device cooperate to supply power to the blood pump during the starting stage of the blood pump, so as to meet the high power required when the blood pump is in the starting state. When the blood pump is in the normal working state, only the wireless power supply device is controlled to supply power to the blood pump, so as to meet the rated power required when the blood pump is in the stable working state. The cooperation of the in-vivo battery module and the wireless power supply device in the embodiment can meet the power required by the blood pump in various states, and the rated power required by the blood pump is less than the high power required during starting. Therefore, the power output by the wireless power supply device can be designed to be smaller, so that the size of the wireless power supply device can be reduced, thereby reducing the overall size of the blood pump power supply system. In addition, the wireless power supply device transmits power in a wireless manner, and the in-vivo battery module is implanted in the patient's body, which can avoid the wound infection problem caused by the transmission of the power supply through the skin cable in the traditional scheme. BRIEF DESCRIPTION OF DRAWINGS

[0034] Those skilled in the art will understand that the provided drawings are for better understanding of the present application, and do not constitute any limitation on the scope of the present application. Among them:

[0035] Figure 1 is a schematic diagram of a blood pump power supply system according to an embodiment of the present application;

[0036] Figure 2 is a schematic diagram of the number configuration of the wireless power supply device and the in-vivo battery module of the blood pump power supply system according to an embodiment of the present application;

[0037] Figure 3 is a schematic diagram of the wireless power supply device in the blood pump power supply system according to an embodiment of the present application;

[0038] Figure 4 is another schematic diagram of the blood pump power supply system according to an embodiment of the present application.

[0039] In the drawings:

[0040] 10 - in-vivo battery module;

[0041] 20 - wireless power supply device; 21 - ring-shaped iron core; 22 - external transmitting coil; 23 - in-vivo receiving coil; 24 - transmitting driving circuit;

[0042] 30 - state detection module;

[0043] 40 - system control module;

[0044] 50 - voltage stabilizing output module;

[0045] 60 - blood pump;

[0046] 70 - battery power management module;

[0047] 80 - temperature detection module;

[0048] 90 - body surface tissue. DETAILED DESCRIPTION

[0049] In order to make the objectives, advantages and features of the present application clearer, the following will further describe the present application in detail with reference to the accompanying drawings and specific embodiments. It should be noted that the drawings are all very simplified and not drawn according to scale, and are only used to facilitate and clarify the purpose of assisting the description of the embodiments of the present application. In addition, the structures shown in the drawings are often part of the actual structures. In particular, the emphasis shown in each drawing is different, and sometimes different scales are used.

[0050] As used in the present application, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise. The term "or" is generally employed in its sense of "and / or" unless the content clearly dictates otherwise. The term "plurality" is generally employed in its sense of "at least one" unless the content clearly dictates otherwise. The term "at least two" is generally employed in its sense of "two or more" unless the content clearly dictates otherwise. In addition, the terms "first", "second", "third", etc., are used only to describe a purpose and cannot be understood as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined as "first", "second", "third" can explicitly or implicitly include one or at least two of the features. "One end" and "the other end" and "proximal end" and "distal end" generally refer to two parts corresponding to each other, which not only includes the end points, and the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrated; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the internal communication or interaction relationship between two elements. In addition, as used in the present application, a component disposed in another component generally only indicates that there is a connection, coupling, cooperation or transmission relationship between the two components, and the two components can be directly or indirectly connected, coupled, cooperated or transmitted through an intermediate component, and cannot be understood as indicating or implying the spatial positional relationship between the two components, i.e. one component can be in any orientation inside, outside, above, below or one side of another component, unless the content clearly indicates otherwise. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0051] Figure 1 is a schematic diagram of a wireless power supply system according to an embodiment of the present application. Referring to Figure 1In an embodiment, a blood pump power supply system is provided, which includes an in-vivo battery module 10, a wireless power supply device 20, a state detection module 30 and a system control module 40. The blood pump 60 is implanted in the patient's body to assist the heart to work. The in-vivo battery module 10 is implanted in the patient's body together with the blood pump 60, and is connected to the blood pump 60 by wire, and can provide power to the blood pump 60. The transmitting coil 22 of the wireless power supply device 20 is located outside the patient's body, and the receiving coil 23 of the wireless power supply device 20 is located inside the patient's body, and the transmitting coil 22 outside the body and the receiving coil 23 inside the body are separated by the skin. The transmitting coil 22 outside the body is connected to an external power supply (usually alternating current), and can wirelessly transmit power to the receiving coil 23 inside the body, and the receiving coil 23 inside the body is connected to the blood pump 60 by wire, and can provide power to the blood pump 60. The state detection module 30 is implanted in the patient's body together with the blood pump 60, and can detect a first parameter of the blood pump 60, the first parameter including a motion state parameter and a position parameter of the blood pump, and transmit the detected motion state parameter and position parameter to the system control module 40. The system control module 40 judges whether the blood pump is in a stable working state or a vibration impact state according to the received motion state parameter and position parameter. An external controller outside the body sends a blood pump start signal to the system control module 40 inside the body through wireless communication, and the system control module 40 receives the blood pump start signal of the external controller to determine that the blood pump 60 is in a start state. The system control module 40 is connected to the in-vivo battery module 10 and the wireless power supply device 20, and adjusts the power supply mode of the in-vivo battery module 10 and the wireless power supply device 20 to the blood pump 60 according to the state of the blood pump 60. The system control module 40 has an active control module. Specifically, the system control module 40 receives the blood pump start signal of the external controller, and determines that the blood pump 60 is in a start state. At this time, the system control module 40 controls the in-vivo battery module 10 and the wireless power supply device 20 to supply power to the blood pump 60 at the same time. When the system control module 40 receives the first parameter (which can be further the rotor angular velocity and position data of the blood pump 60) of the blood pump 60 detected by the state detection module 30, it is determined that the blood pump 60 is in a stable working state, and the system control module 40 cuts off the connection between the in-vivo battery module 10 and the blood pump 60, and only controls the wireless power supply device 20 to supply power to the blood pump 60. When the system control module 40 receives the rotor acceleration data of the blood pump 60 detected by the state detection module 30, it is determined that the blood pump 60 is in a vibration impact state, and the system control module 40 controls the in-vivo battery module 10 and the wireless power supply device 20 to supply power to the blood pump 60 at the same time.

[0052] In summary, the state detection module 30 detects the motion and position parameters of the blood pump 60. The system control module determines the state of the blood pump 60 based on the detected parameters and actively adjusts the power supply accordingly. This is the active control mode of the system control module 40. The active control mode can determine the required power of the blood pump 60 based on its state (e.g., startup, stable operation, and vibration / impact), thereby rationally adjusting the power supply.

[0053] Specifically, the state detection module 30 includes an accelerometer, an angle sensor, and a position sensor, which are typically built into the blood pump 60. The accelerometer detects the acceleration of the blood pump 60 along the X, Y, and Z axes. When the patient is standing or walking normally, the acceleration of the blood pump 60 along the X, Y, and Z axes is detected to be 0. When the patient is in a complex external environment (such as riding a high-speed elevator, suddenly falling, or riding in a vehicle that brakes suddenly), the blood pump 60 implanted in the patient's body will also be impacted, and changes in the three-axis acceleration of the blood pump 60 and its vector sum will be detected. Based on this, the system control module 40 indicates that the blood pump 60 is in a state of vibration and impact. The angle sensor measures the angular velocity of the rotor of the blood pump 60, and the position sensor measures the axial and radial positions of the rotor of the blood pump 60 within the pump housing. If the rotor angular velocity or rotor position is within a preset range, the system control module 40 indicates that the blood pump 60 is in a stable working state.

[0054] It should be noted that the external controller outside the body sends a blood pump start signal to the internal system control module 40 via wireless communication. The system control module 40 is connected to the blood pump operation control module in the blood pump 60. After the system control module 40 transmits the blood pump start signal to the blood pump operation control module, the blood pump 60 starts.

[0055] When the blood pump 60 is in the startup state, that is, in the initial start-up phase, a relatively high-power power supply is required. When the blood pump 60 is in the stable operating state, that is, in the stage of normal and stable operation to perform work on the blood, the power required for the operating state (i.e., the rated power of the blood pump 60) is less than the power required for the startup phase. When the blood pump 60 is in a vibration and shock state, that is, when the patient with the blood pump 60 implanted in the body is in a complex external environment, such as riding a fast elevator, suddenly falling, or riding in a vehicle that brakes suddenly, the blood pump 60 in the patient's body will also be subjected to impact, and the blood pump 60 will be subjected to acceleration forces along the X, Y, and Z axes. In order to balance the acceleration forces subjected to the blood pump 60, the motor power needs to be increased. Therefore, compared with the stable operating state, the blood pump 60 requires more power under vibration and shock conditions.

[0056] In this embodiment, the cooperation between the in-vivo battery module 10 and the wireless power supply device 20 can meet the power requirements of the blood pump 60 in various states. The blood pump 60 requires a larger power supply when in the start-up state and under vibration and shock conditions, so the system control module 40 controls the in-vivo battery module 10 and the wireless power supply device 20 to supply power to the blood pump 60 simultaneously. The blood pump 60 requires a smaller power supply when in a stable operating state, so the system control module 40 only controls the wireless power supply device 20 to supply power to the blood pump 60. The power supply of the wireless power supply device 20 only needs to meet the rated power required by the blood pump 60 in a stable operating state; compared to the stable operating state, the additional power required in the start-up state and under vibration and shock conditions is provided by the in-vivo battery module 10. The power supply of the wireless power supply device 20 can be designed to be smaller. Therefore, on the one hand, the external transmitting coil 22 and the internal receiving coil 23 of the wireless power supply device 20 can be designed to be smaller, reducing the difficulty of implanting the internal receiving coil 23; on the other hand, lower power supply results in less coil heating, reducing the risk of high-temperature burns to the human tissue in contact with the coil.

[0057] Furthermore, the status detection module 30 is also used to detect a second parameter of the blood pump 60, which includes the current parameter and voltage parameter of the motor of the blood pump 60. Specifically, the status detection module includes a current sensor and a voltage sensor. The current sensor detects the current parameter of the motor, and the voltage sensor detects the voltage parameter of the motor. The current parameter and voltage parameter of the motor directly reflect the operating status of the motor. When the blood pump is under vibration and shock, the current parameter of the motor detected by the current sensor and the voltage parameter of the motor detected by the voltage sensor drop abnormally. The system control module 40 also has a hardware control mode. Specifically, when the system control module 40 receives the voltage and current parameters of the blood pump 60 motor detected by the status detection module 30, and the drop in the voltage and current parameters of the motor exceeds the preset range, the system control module 40 determines that the blood pump 60 is under vibration and shock. The system control module 40 controls the internal battery module 10 and the wireless power supply device 20 to simultaneously supply power to the blood pump 60 to meet the high power demand under vibration and shock.

[0058] In summary, by using accelerometers, angle sensors, and position sensors to detect the motion and position parameters of the blood pump 60, the system control module 40 can determine the state of the blood pump 60 based on the detected parameters and actively adjust the power supply accordingly. This is the active control mode of the system control module 40. Alternatively, by using current and voltage sensors to detect the current and voltage parameters of the blood pump 60's motor, the system control module 40 directly receives these parameters and drives the internal battery module 10 and wireless power supply device 20 to provide power to the motor. This is the hardware control mode. The active control mode can determine the required power of the blood pump 60 based on its state (e.g., startup, stable operation, vibration / impact), and thus rationally adjust the power supply. However, when the motor voltage or current suddenly drops, due to inaccurate first parameters sampled by the sensor or data processing delays in the system control module 60, the internal battery module 10 and wireless power supply device 20 cannot provide the motor with the extreme instantaneous power demand in time. At this time, the system control module 40 directly receives and calculates the voltage and current parameters of the motor from the blood pump 60, and controls the internal battery module 10 and wireless power supply device 20 to simultaneously provide the motor with the extreme instantaneous power demand, thus timely increasing the motor voltage and current. Therefore, the active control mode can be considered the first level of system power safety management, and the hardware control mode can be considered the second level of system power safety management. The hardware control mode is activated only when the active control mode fails. For example, the failure of the active control mode could be indicated when the motor voltage parameter drops to the nearest minimum operating voltage (e.g., 10V), exceeding the preset voltage drop range. In this case, the system control module 40 activates the hardware control mode. The multi-level system power safety management mode can increase the reliability and stability of power supply, and avoid the blood pump 60 from being unable to supply power due to the first parameter of sensor sampling being inadequate or the data processing delay of the system control module, which would cause the blood pump 60 to stop and seriously endanger the patient's life.

[0059] The system control module 40 connects the internal battery module 10 and the wireless power supply device 20. On one hand, the system control module 40 can control the internal battery module 10 and the wireless power supply device 20 to supply power to the blood pump 60. On the other hand, the system control module 40 can detect the battery and voltage of the internal battery module 10, as well as the current and voltage of the wireless power supply device 20. Further, when the system control module 40 detects that the current and voltage of the internal battery module 10 are both lower than their respective set thresholds (i.e., the current of the internal battery module 10 is lower than the first current threshold and the voltage is lower than the first voltage threshold), it determines that the internal battery module 10 is in a fault state, and the system control module 40 only controls the wireless power supply device 20 to supply power to the blood pump 60. When the system control module 40 detects that the current and voltage of the wireless power supply device 20 are both lower than their respective set thresholds (i.e., the current of the wireless power supply device 20 is lower than the second current threshold and the voltage is lower than the second voltage threshold), it determines that the wireless power supply device 20 is in a fault state, and the system control module 40 only controls the internal battery module 10 to supply power to the blood pump. Simultaneously, the system control module 40 will also transmit fault warning signals to the external controller to indicate that the internal battery module 10 or the wireless power supply device 20 is in a fault state, thereby providing fault information to the user and prompting the operator to handle the fault problem of the internal battery module 10 or the wireless power supply device 20. The fault information provided here can be prompted to the user in the form of sensory signals, such as visualizing the fault information, including appearing on the display of the external controller in the form of an information prompt box, or displaying it in the form of status lights.

[0060] Furthermore, the blood pump power supply system also includes a temperature detection module 80. The temperature sensor in the temperature detection module 80 is used to detect the temperature of the wireless power supply device 20 (specifically, the temperature of the in-vivo receiving coil 23) and the temperature of the in-vivo battery module 10. The system control module 40 receives the temperature data detected by the temperature sensor. When the temperature of the in-vivo receiving coil 23 exceeds a first preset temperature, the system control module 40 controls the blood pump 60 to reduce its operating speed and the power output from the wireless power supply device 20 to the blood pump 60 to reduce its power. When the temperature of the in-vivo battery module exceeds a second preset temperature, the system control module 40 controls the blood pump 60 to reduce its operating speed and the power output from the in-vivo battery module 10 to the blood pump 60 to reduce its power, for example, to a set minimum power to meet the minimum power requirements for blood to perform its work.

[0061] Preferably, the blood pump power supply system further includes a voltage regulator output module 50. The voltage regulator output module 50 can adjust the voltage provided by the in-vivo battery module 10 to a preset voltage and then output it to the blood pump 60. The voltage regulator output module 50 can also adjust the voltage provided by the wireless power supply device 20 to a preset voltage and then output it to the blood pump 60. The design of the voltage regulator output module 50 ensures that a constant preset voltage is provided to the blood pump 60, such as a preset voltage of 12V. The voltage regulator output module 50 can be, for example, a voltage regulator built into the blood pump 60, or a voltage regulator output circuit integrated into the circuit board of the blood pump 60.

[0062] Figure 2 This is a schematic diagram illustrating the quantity and configuration of the wireless power supply device and the in-vivo battery module in a blood pump power supply system according to an embodiment of the present invention. There is at least one in-vivo battery module and at least one wireless power supply device. (See also...) Figure 2 Preferably, there are at least two sets of internal battery modules 10, and these at least two sets of internal battery modules 10 are connected in parallel without interfering with each other. Correspondingly, there can also be at least two wireless power supply devices 20, and these at least two wireless power supply devices 20 are connected in parallel without interfering with each other. The number of internal battery modules 10 and wireless power supply devices 20 can be the same or different. The multiple design of the wireless power supply devices 20 ensures redundant input, resulting in higher power supply reliability. The multiple design of the internal battery modules 10 also ensures a longer redundant backup power time for the internal battery modules 10.

[0063] Figure 3 This is a schematic diagram of a wireless power supply device according to an embodiment of the present invention. (See attached diagram.) Figure 3 Furthermore, this embodiment can be configured with the wireless power supply device 20 based on the principle of a transformer. Specifically, the wireless power supply device 20 includes a ring-shaped iron core 21, an external transmitting coil 22, and an internal receiving coil 23. The external transmitting coil 22 is used to connect to AC power, and the internal receiving coil 23 is connected to the blood pump 60. Both the external transmitting coil 22 and the internal receiving coil 23 are wound on the ring-shaped iron core 21. In a specific implementation, the internal receiving coil 23 is first implanted into the patient's body, located under the patient's body surface tissue 90. Then, a puncture hole is made in the patient's body surface tissue 90, and the puncture hole passes through the through hole of the internal receiving coil 23. The ring-shaped iron core 21 passes through the puncture hole, and the external transmitting coil 22 passes through the through hole of the ring-shaped iron core 21, thereby installing the wireless power supply device 20. Of course, the wireless power supply device 20 of the present invention is not specifically limited. The wireless power supply device 20 can be based on principles such as electromagnetic induction, magnetic field resonance, radio waves, and electric field coupling.

[0064] Figure 4 This is another schematic diagram of the power supply system according to one embodiment of the present invention. (See attached diagram.) Figure 4Furthermore, the wireless power supply device 20 also includes a transmission drive circuit 24 that provides AC power to the external transmitting coil 22. The AC power output mode of the transmission drive circuit 24 is forward, flyback, or push-pull, which ensures that the transmission drive circuit 24 is more stable and reliable, and makes it easier to achieve a miniaturized design of the wireless power supply device 20.

[0065] Furthermore, regarding the charging and energy storage method of the in vivo battery module 10, in one embodiment, when the blood pump 60 is in a stable working state, after the system control module 40 switches the power supply of the in vivo battery module 10 to the blood pump 60, the system control module 40 also controls the wireless power supply device 20 to charge the in vivo battery module 10.

[0066] Specifically, the blood pump power supply system also includes a battery power management module 70. After the internal battery module 10 stops supplying power to the blood pump 60, the battery power management module 70 continuously monitors the status of the internal battery module 10. When the battery power management module 70 detects that the status of the internal battery module 10 meets preset conditions, it notifies the system control module 40, which then controls the wireless power supply device 20 to charge the internal battery module 10. The preset conditions include, but are not limited to: the current of the internal battery module 10 is less than a current threshold (i.e., the current of the internal battery module 10 is lower than a third current threshold) and the voltage of the internal battery module 10 is less than a voltage threshold (i.e., the voltage of the internal battery module 10 is lower than a third voltage threshold).

[0067] Preferably, the blood pump power supply system further includes a rectification and filtering module, which is used to rectify and filter the current provided by the wireless power supply device 20 before transmitting it to the in-body battery module 10 for charging. The rectification and filtering module can be, for example, a capacitor C connected in parallel with the in-body receiving coil 23. Figure 4 (as shown in the image).

[0068] The following seven stages illustrate how the blood pump power supply system of this implementation supplies power to the blood pump 60:

[0069] Start-up phase: The external controller sends a blood pump start signal to the system control module 40 (the blood pump start signal is transmitted wirelessly). The system control module 40 controls the blood pump 60 to start and determines that the blood pump 60 is in the start-up state. The system control module 40 controls the internal battery module 10 and the wireless power supply device 20 to supply power to the blood pump 60 at the same time to ensure that the blood pump 60 is started up normally.

[0070] Vibration and shock stage in active control mode: When the system control module 40 determines that the blood pump 60 is in an operating environment with large vibration or shock based on the first parameters fed back by the acceleration sensor, angle sensor and position sensor (that is, the blood pump 60 is in a vibration and shock state), the system control module 40 will reduce the operating speed of the blood pump 60, and the system control module 40 will still control the internal battery module 10 and the wireless power supply device 20 to supply power to the blood pump 60 simultaneously, so as to meet the high power required by the blood pump 60 when it is in a vibration and shock state.

[0071] Stable working phase: After the system control module 40 determines that the blood pump 60 is in a stable working state based on the first parameter fed back by the status detection module 30, the system control module 40 cuts off the power supply from the internal battery module 10 to the blood pump 60, and only maintains the power supply from the wireless power supply device 20 to the blood pump 60.

[0072] Charging phase: After the blood pump 60 is in a stable working state, the battery power management module 70 detects that the current of the internal battery module 10 is lower than the current threshold, or detects that the voltage of the internal battery module 10 is lower than the voltage threshold. Then the system control module 40 controls the wireless power supply device 20 to maintain the mode of powering the blood pump 60 while charging the internal battery module 10.

[0073] Vibration and shock stage in hardware control mode: When the blood pump 60 is in a stable working state, the second parameter of the blood pump 60 is detected by the current sensor and voltage sensor. When the voltage parameter of the second parameter is less than or equal to the minimum working voltage, the active control mode of the system control module 40 is considered to be in failure. The system control module 40 will execute the hardware control module. The system control module 40 determines that the blood pump 60 is in a vibration and shock state according to the second parameter, and controls the internal battery module 10 and the wireless power supply device 20 to supply power to the blood pump 60 at the same time.

[0074] In the power failure phase: The system control module 40 detects the current and voltage of the internal battery module 10 and the wireless power supply device 20. If both the current and voltage of the internal battery module 10 are lower than their respective set thresholds, the internal battery 10 is determined to be in a fault state, and the system control module 40 will control the wireless power supply device 20 to supply power to the blood pump 20. If both the current and voltage of the wireless power supply device 20 are lower than their respective set thresholds, the wireless power supply device 20 is determined to be in a fault state, and the system control module 40 will control the internal battery module 10 to supply power to the blood pump 60. The system control module 40 also sends a fault warning signal to the external controller regarding the internal battery module 10 or the wireless power supply device 20.

[0075] Temperature detection phase: Temperature detection module 80 detects the temperature of wireless power supply device 20 and internal battery module 10. When the temperature of wireless power supply device 20 exceeds the first preset temperature, system control module 40 controls blood pump 60 to reduce its operating speed and the power output from wireless power supply device 20 to blood pump 60. When the temperature of internal battery module 10 exceeds the second preset temperature, system control module 40 controls blood pump 60 to reduce its operating speed and the power output from internal battery module 10 to blood pump 60, for example, to reduce it to a set minimum power to meet the minimum power requirements for blood to perform work, thereby maintaining the patient's minimum life support mode.

[0076] While the present invention has been disclosed above with reference to preferred embodiments, these embodiments are not intended to limit the invention. For any person skilled in the art, many possible variations and modifications can be made to the technical solutions of the present invention based on the disclosed technical content, or equivalent embodiments can be modified accordingly, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, shall still fall within the scope of protection of the present invention.

Claims

1. A blood pump power supply system, characterized in that, include: An internal battery module that can power the blood pump; A wireless power supply device that can supply power to the blood pump; A state detection module is used to detect a first parameter of the blood pump, the first parameter including the motion state parameter and position parameter of the blood pump; The system control module has an active control mode, which is configured as follows: when the system control module determines that the blood pump is in a stable working state based on the first parameter, it controls the wireless power supply device to supply power to the blood pump; and when the system control module determines that the blood pump is in a start-up state based on an external blood pump start-up signal, it controls the internal battery module and the wireless power supply device to supply power to the blood pump simultaneously.

2. The blood pump power supply system according to claim 1, characterized in that, The wireless power supply device includes a ring-shaped iron core, an external transmitting coil, and an internal receiving coil. The external transmitting coil is used to connect to AC power, and the internal receiving coil is connected to the blood pump. Both the external transmitting coil and the internal receiving coil are wound around the ring-shaped iron core.

3. The blood pump power supply system according to claim 2, characterized in that, The wireless power supply device also includes a transmission drive circuit that provides AC power to the external transmitting coil. The AC power output mode of the transmission drive circuit is forward, flyback, or push-pull.

4. The blood pump power supply system according to claim 1, characterized in that, The active control mode is further configured such that when the system control module determines that the blood pump is in a vibration and impact state based on the first parameter, it controls the in-body battery module and the wireless power supply device to simultaneously supply power to the blood pump.

5. The blood pump power supply system according to claim 4, characterized in that, The status detection module is also used to detect a second parameter of the blood pump, the second parameter including the current parameter and voltage parameter of the blood pump motor; the system control module also has a hardware control mode, the hardware control mode being configured such that when the system control module determines that the blood pump is in a vibration and impact state according to the second parameter, it controls the internal battery module and the wireless power supply device to simultaneously supply power to the blood pump.

6. The blood pump power supply system according to claim 5, characterized in that, The system control module executes the hardware control mode when the active control mode fails; wherein, the flag indicating that the active control mode has failed is configured as follows: the voltage parameter is less than or equal to the minimum operating voltage.

7. The blood pump power supply system according to claim 5, characterized in that, The status detection module includes a current sensor and a voltage sensor.

8. The blood pump power supply system according to claim 1, characterized in that, The system control module is used to detect the current and voltage of the in-body battery module, and to detect the current and voltage of the wireless power supply device; When the system control module determines that the in vivo battery module is in a fault state, it controls the wireless power supply device to supply power to the blood pump. The flag indicating that the in vivo battery module is in a fault state is configured as follows: the current and voltage of the in vivo battery module are both lower than their respective set thresholds. When the system control module determines that the wireless power supply device is in a fault state, it controls the in vivo battery module to supply power to the blood pump. The flag indicating that the wireless power supply device is in a fault state is configured as follows: the current and voltage of the wireless power supply device are both lower than their respective set thresholds.

9. The blood pump power supply system according to claim 8, characterized in that, The system control module is used to transmit fault warning signals to an external controller to indicate that the internal battery module and / or wireless power supply device are in a faulty state.

10. The blood pump power supply system according to claim 1, characterized in that, The blood pump power supply system also includes a temperature detection module, which is used to detect the temperature of the wireless power supply device and the temperature of the in vivo battery module. When the temperature of the wireless power supply device exceeds a first preset temperature, the system control module controls the blood pump to reduce its operating speed and controls the wireless power supply device to reduce the power output to the blood pump. When the temperature of the in vivo battery module exceeds a second preset temperature, the system control module controls the blood pump to reduce its operating speed and controls the in vivo battery module to reduce the power output to the blood pump.

11. The blood pump power supply system according to claim 1, characterized in that, The in-body battery module is at least one set, and the wireless power supply device is at least one.

12. The blood pump power supply system according to claim 11, characterized in that, When the blood pump is in a stable working state, the system control module can also control the wireless power supply device to charge the in vivo battery module.

13. The blood pump power supply system according to claim 12, characterized in that, The blood pump power supply system also includes a battery power management module. When the battery power management module detects that the in-body battery module meets preset conditions, the system control module controls the wireless power supply device to charge the in-body battery module. The preset conditions include: the current of the in-body battery module is less than a current threshold, and / or the voltage of the in-body battery module is less than a voltage threshold.

14. The blood pump power supply system according to claim 1, characterized in that, The blood pump power supply module also includes a voltage stabilization output module, which adjusts the voltage provided by the in vivo battery module and / or the wireless power supply device to a preset voltage and then outputs it to the blood pump.

15. The blood pump power supply system according to claim 1, characterized in that, The state detection module includes an acceleration sensor, an angular velocity sensor, and a position sensor, used to detect the first parameter of the blood pump.

Images