Blood pump power supply system

Abstract

The invention 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, and both the in-vivo battery module and the wireless power supply device can supply power to a blood pump; the system control module obtains a first parameter of the blood pump through the state detection module to judge the state of the blood pump, and controls the in-vivo battery module and the wireless power supply device to supply power to the blood pump at the same time 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 the stable working state. The matching design of the in-vivo battery module and the wireless power supply device can meet the power required by the blood pump in each state, and the rated power required when the blood pump is in a stable working state is smaller than the high power required when the blood pump is started, so that the power output by the wireless power supply device can be designed to be smaller; therefore, the size design of the wireless power supply device can be reduced, and the size of the blood pump power supply system is integrally reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a blood pump power supply system. Background Art

[0002] The working mechanism of the ventricular assist device is to use the blood pump to do work on the blood, thereby assisting blood flow. The present invention relates to a fully magnetically suspended heart pump, which is suitable for long-term blood circulation assistance in the late stage of heart failure. In existing cases, the application time of the fully magnetically suspended heart pump can be up to 10 years, and the patient is completely dependent on the artificial blood pump after implantation of this product, and the heart's own blood pumping ability is almost lost. If the blood pump loses power, it will be fatal to the patient. Therefore, providing a stable and reliable power supply to the heart pump for a long time to support the long-term operation of the heart pump is the key to this product.

[0003] In the prior art, power is transmitted through a percutaneous cable, that is, a cable is passed through the human skin to supply power to the blood pump in the human body. However, the wound caused by the percutaneous cable is easily infected, which brings inconvenience to the patient and even threatens his life.

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

[0005] In addition, the prior art uses a single power supply to power the heart pump. For example, in the percutaneous cable transmission power supply, a single external power supply is electrically connected to the external controller, and then the external controller is electrically connected to the blood pump through the cable; in the wireless charging process of the transceiver coil, a single transceiver coil group is used, and the receiving coil is electrically connected to the blood pump to power the blood pump. The starting power required by the blood pump during the pump startup phase is much greater than the rated power of the pump when it is in normal operation for a long time. When designing the power supply for the blood pump, in order to ensure the normal startup 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 in turn leads to a large volume design of the power supply (specifically, the external battery in the percutaneous cable power supply is very large and the coil diameter in the wireless charging is very large). However, when the blood pump enters a long-term normal operation state from the startup state, the required rated power is reduced, so the power supply does not need to be high-power.

[0006] Therefore, it is necessary to reasonably design the power supply. On the one hand, it can meet the power supply requirements for the start-up and long-term normal operation of the blood pump; on the other hand, it can design a reasonable power supply output power to reduce the size of the power supply as much as possible. Summary of the invention

[0007] The present invention provides a blood pump power supply system, which aims to meet the power supply power requirements of the blood pump in the startup stage and the long-term normal operation stage and reduce the power supply volume to achieve the effect of small volume and light weight of the blood pump power supply.

[0008] In order to solve the above technical problems, the present invention provides a blood pump power supply system, which includes:

[0009] an in-body battery module that powers 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 to detect a first parameter of the blood pump, wherein the first parameter includes a motion state parameter and a position parameter of the blood pump;

[0012] A system control module is connected to the state detection module to obtain the first parameter, and the system control module has an active control mode. The active control mode is configured as follows: when the system control module determines that the blood pump is in a stable working state according to the first parameter, the system control module 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 according to an external blood pump start-up signal, 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.

[0013] Optionally, the wireless power supply device includes an annular iron core, an external transmitting coil and an internal receiving coil, the external transmitting coil is used to access alternating current, the internal receiving coil is connected to the blood pump, and the external transmitting coil and the internal receiving coil are both wound around the annular iron core.

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

[0015] Optionally, the active control mode is further configured as follows: when the system control module determines that the blood pump is in a vibration impact state according to the first parameter, 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.

[0016] Optionally, the status detection module is also used to detect a second parameter of the blood pump, wherein the second parameter includes a current parameter and a voltage parameter of the motor of the blood pump; the system control module also has a hardware control mode, and the hardware control mode is configured as follows: when the system control module determines that the blood pump is in a vibration impact state based on the second parameter, it controls the in vivo battery module and the wireless power supply device to supply power to the blood pump at the same time.

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

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

[0019] Optionally, the system control module is used to detect the current and voltage of the in-body 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 it determines that the in-vivo battery module is in a fault state, and the sign that the in-vivo battery module is in a fault state is configured as: the current and voltage of the in-vivo battery module are both lower than respective set thresholds;

[0021] When the system control module determines that the wireless power supply device is in a fault state, it controls the in-body battery module to supply power to the blood pump. The sign that the wireless power supply device is in a fault state is configured as: the current and voltage of the wireless power supply device are both lower than their respective set thresholds.

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

[0023] Optionally, the blood pump power supply system further comprises a temperature detection module, and the temperature detection module is used 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 when the temperature of the wireless power supply device exceeds a first preset temperature, and controls the wireless power supply device to reduce the power output to the blood pump;

[0025] The system control module controls the blood pump to reduce its operating speed when the temperature of the in vivo battery module exceeds a second preset temperature, and controls the in vivo battery module to reduce its output. The in vivo battery module is at least one group, and the wireless power supply device is at least one power supply to the blood pump.

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

[0027] Optionally, the system control module may also 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 includes a battery power management module, and when the battery power management module detects that the in-vivo battery module meets a preset condition, the system control module controls the wireless power supply device to charge the in-vivo battery module;

[0029] The preset condition includes: 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 includes a rectification and filtering module, which is used to rectify and filter the current provided by the wireless power supply device and then transmit it to the in-vivo battery module.

[0031] Optionally, the blood pump power supply module further includes a voltage stabilizing 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 the voltage to the blood pump.

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

[0033] In the blood pump power supply system as described above, the in-vivo battery module is implanted in the patient's body together with the blood pump, and the in-vivo battery module is connected to the blood pump by wire to provide electrical energy to the blood pump. The transmitting coil of the wireless power supply device is located outside the patient's body, and the receiving coil of the wireless power supply device is located inside the patient's body, with skin between the external transmitting coil and the internal receiving coil. The external transmitting coil is connected to an external power source (usually alternating current) to wirelessly transmit electrical energy to the internal receiving coil, and the internal receiving coil is connected to the blood pump by wire to provide electrical energy to the blood pump 60. The in-vivo battery module and the wireless power supply device cooperate to simultaneously supply power to the blood pump during the startup phase of the blood pump to meet the high power required when the blood pump is in the startup state, and when the blood pump is operating normally, only the wireless power supply device is controlled to supply power to the blood pump, thereby meeting the rated power required when the blood pump is in a stable working state. The coordinated design of the in-vivo battery module and the wireless power supply device of this 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 at startup, so the power output by the wireless power supply device can be designed to be smaller, thereby reducing the volume design of the wireless power supply device, thereby reducing the volume of the blood pump power supply system as a whole. In addition, the wireless power supply device transmits electrical energy wirelessly, and the in-vivo battery module is implanted in the patient's body, which can avoid the problem of wound infection caused by the percutaneous cable transmission power supply method in the traditional solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Those skilled in the art should understand that the drawings are provided for a better understanding of the present invention and do not constitute any limitation on the scope of the present invention.

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

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

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

[0038] Figure 4 2 is another schematic diagram of the blood pump power supply system according to the first embodiment of the present invention.

[0039] In the attached figure:

[0040] 10- In-body battery module;

[0041] 20-wireless power supply device; 21-ring core; 22-external transmitting coil; 23-internal receiving coil; 24-transmitting drive circuit;

[0042] 30-status detection module;

[0043] 40-system control module;

[0044] 50-voltage regulated 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 purpose, advantages and features of the present invention clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the drawings are all in a very simplified form and are not drawn to scale, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. In addition, the structure shown in the drawings is often a part of the actual structure. In particular, the emphasis of each drawing is different, and sometimes different scales are used.

[0050] As used in the present invention, the singular forms "one", "an" and "the" include plural objects, the term "or" is generally used to include the meaning of "and / or", the term "several" is generally used to include the meaning of "at least one", and the term "at least two" is generally used to include the meaning of "two or more". In addition, the terms "first", "second" and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" and "third" may explicitly or implicitly include one or at least two of the features, "one end" and "the other end" and "the proximal end" and "the distal end" generally refer to two corresponding parts, which include not only the endpoints, and the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. In addition, as used in the present invention, an element disposed on another element generally only indicates that there is a connection, coupling, cooperation or transmission relationship between the two elements, and the connection, coupling, cooperation or transmission between the two elements may be direct or indirect through an intermediate element, and cannot be understood as indicating or implying the spatial position relationship between the two elements, that is, one element may be in any orientation such as inside, outside, above, below or on one side of another element, unless otherwise clearly indicated in the content. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] Figure 1 is a schematic diagram of a wireless power supply system according to an embodiment of the present invention. Figure 1An embodiment of the present invention schematically provides a blood pump power supply system, 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 in doing work. The in-vivo battery module 10 is implanted in the patient's body together with the blood pump 60. The in-vivo battery module 10 and the blood pump 60 are wired connected, and the in-vivo battery module 10 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. The skin is between the external transmitting coil 22 and the internal receiving coil 23. The external transmitting coil 22 is connected to an external power source (usually alternating current) to wirelessly transmit power to the internal receiving coil 23. The internal receiving coil 23 and the blood pump 60 are wired connected to provide power to the blood pump 60. The state detection module 30 is implanted in the patient's body along with the blood pump 60. The state detection module 30 can detect the first parameter of the blood pump 60, which includes the motion state parameter and 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 determines whether the blood pump is in a stable working state or a vibration impact state based on the received motion state parameter and position parameter. The external controller outside the body sends a blood pump start signal to the system control module 40 inside the body through wireless communication. The system control module 40 receives the blood pump start signal from the external controller and determines that the blood pump 60 is in the start state. The system control module 40 is connected to the internal battery module 10 and the wireless power supply device 20, and adjusts the way in which the internal battery module 10 and the wireless power supply device 20 supply power 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 a blood pump start signal from an external controller and determines that the blood pump 60 is in a start state. At this time, 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; when the system control module 40 receives the first parameter of the blood pump 60 detected by the state detection module 30 (which can be further the rotor angular velocity and position data of the blood pump 60) is stable, 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 internal 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 is in a rapid change, it is determined that the blood pump 60 is in a vibration impact state, and 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.

[0052] In summary, the state detection module 30 is used to detect the motion state parameters and position parameters of the blood pump 60, and the system control module determines the state of the blood pump 60 according to the detected first parameter, and actively adjusts the power supply according to the state of the blood pump, that is, in the active control mode of the system control module 40. The active control mode can determine the required power of the blood pump 60 according to the state of the blood pump (such as the startup state, the stable working state, and the vibration impact state), so as to reasonably adjust the power supply.

[0053] Specifically, the state detection module 30 includes an acceleration sensor, an angle sensor, and a position sensor, which are usually built into the blood pump 60. The acceleration sensor detects the acceleration of the blood pump 60 on the X-axis, Y-axis, and Z-axis. When the patient stands or walks normally, the acceleration of the blood pump 60 on the X-axis, Y-axis, and Z-axis is detected to be 0. When the patient is in a complex external environment (such as riding a fast elevator, suddenly falling, or riding in an emergency braked vehicle), the blood pump 60 implanted in the patient's body will also be impacted, and the three-axis acceleration of the blood pump 60 and its vector sum will be detected to change. The system control module 40 accordingly prompts that the blood pump 60 is in a vibration impact state. 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 in the pump housing. The rotor angular velocity or rotor position is within a preset range, and the system control module 40 accordingly prompts 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 system control module 40 inside the body through 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] The blood pump 60 is in the startup state, that is, the blood pump 60 is in the initial startup stage, and a relatively high power source is required for the startup stage; the blood pump 60 is in the stable working state, that is, the blood pump 60 is in the normal and stable operation stage to do work for the blood, and the power source required in the working stage (that is, the rated power of the blood pump 60) is less than the power required in the startup stage; the blood pump 60 is in the vibration impact state, that is, 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, riding in an emergency braked vehicle, the blood pump 60 in the patient's body will also be impacted, and the blood pump 60 will be subjected to acceleration forces on the X-axis, Y-axis, and Z-axis. In order to balance the acceleration force on the blood pump 60, the power of the motor needs to be increased. Therefore, compared with the stable working state, the power source required for the blood pump 60 in the vibration impact state is greater.

[0056] The cooperation of the in-vivo battery module 10 and the wireless power supply device 20 of this embodiment can meet the power required by the blood pump 60 in various states. The power required by the blood pump 60 in the startup state and the vibration impact state is relatively large, 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; the power required by the blood pump 60 in the stable working state is relatively small, and 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 the stable working state; compared with the stable working state, the additional power required in the startup state and the vibration impact state is provided by the in-vivo battery module 10. The power supply of the wireless power supply device 20 can be designed to be relatively small, so that, on the one hand, the volume of the in-vivo transmitting coil 22 and the in-vivo receiving coil 23 of the wireless power supply device 20 can be designed to be relatively small, and the difficulty of implanting the in-vivo receiving coil 23 is reduced; on the other hand, the power supply is small, the coil generates less heat, and the risk of high temperature burns of human tissue in contact with the coil is reduced.

[0057] Further, the state detection module 30 is also used to detect the second parameter of the blood pump 60, and the second parameter includes the current parameter of the motor of the blood pump 60 and the voltage parameter of the motor. Specifically, the state 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, and the current parameter and the voltage parameter of the motor directly reflect the running condition of the motor. When the blood pump is in a vibration impact state, 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, the system control module 40 receives the voltage parameter and the current parameter of the motor of the blood pump 60 detected by the state detection module 30. If the decrease of the voltage parameter and the current parameter of the motor exceeds the preset range, the system control module 40 determines that the blood pump 60 is in a vibration impact state, and the system control module 40 controls the in-body battery module 10 and the wireless power supply device 20 to supply power to the blood pump 60 at the same time to meet the high power demand of the power supply under the vibration impact state.

[0058] In summary, the three sensors, namely the acceleration sensor, the angle sensor and the position sensor, are used to detect the motion state parameters and position parameters of the blood pump 60. The system control module 40 can judge the state of the blood pump 60 according to the detected first parameter, and actively adjust the power supply according to the state of the blood pump 60, which belongs to the active control mode of the system control module 40. The current sensor and the voltage sensor are used to detect the current parameters and voltage parameters of the motor of the blood pump 60. The system control module 40 directly receives the voltage parameters and current parameters of the motor of the blood pump 60, and drives the in-body battery module 10 and the wireless power supply device 20 to provide power to the motor, which belongs to the hardware control mode. The active control mode can judge the power required by the blood pump 60 according to the state of the blood pump 60 (such as the startup state, the stable working state, the vibration impact state), so as to reasonably adjust the power supply. However, when the voltage or current of the motor suddenly drops, due to the problem of the first parameter sampled by the sensor not being in place or the data processing delay of the system control module 60, the internal battery module 10 and the wireless power supply device 20 cannot be driven to provide the motor with extreme instantaneous power requirements in time. At this time, the system control module 40 directly receives the voltage parameter and current parameter of the motor of the blood pump 60 and calculates, controls the internal battery module 10 and the wireless power supply device 20 to provide the motor with extreme instantaneous power requirements at the same time, and timely increases the voltage and current of the motor. In this way, the active control mode can be considered as the first-level system power safety management, and the hardware control mode can be considered as the second-level system power safety management. When and only when the active control mode fails, the hardware control mode is started. The sign of the failure of the active control mode can be, for example, when the voltage parameter of the motor is reduced to the nearest minimum operating voltage (such as 10V), the voltage drop exceeds the preset voltage drop range, and the active control mode will fail. At this time, the hardware control mode is started in the system control module 40. The multi-level system power safety management mode can increase the reliability and stability of the power supply, and avoid the blood pump 60 being shut down due to the first parameter of the sensor sampling not being in place or the data processing delay of the system control module, which seriously endangers the patient's life safety.

[0059] The system control module 40 is connected to the in-vivo battery module 10 and the wireless power supply device 20. On the one hand, the system control module 40 can control the in-vivo 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 in-vivo battery module 10, and detect 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 in-vivo battery module 10 are both lower than the corresponding thresholds set respectively (that is, the current of the in-vivo battery module 10 is lower than the first current threshold, and the voltage is lower than the first voltage threshold), it is determined that the in-vivo 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 the corresponding thresholds set respectively (that is, 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 is determined that the wireless power supply device 20 is in a fault state, and the system control module 40 only controls the in-vivo battery module 10 to supply power to the blood pump. At the same time, the system control module 40 will also transmit a fault warning signal to the external controller to feedback that the internal battery module 10 is in a fault state or the wireless power supply device 20 is in a fault state, thereby giving fault information to the user and prompting the operator to deal with the fault problem of the internal battery module 10 or the fault problem of the wireless power supply device 20. The fault information given here can, for example, prompt the user in the form of a sensory signal, such as visualizing the fault information, including appearing in the form of an information prompt box on the display of the external controller, or displaying it in the form of a status light.

[0060] Furthermore, the blood pump power supply system also includes a temperature detection module 80, and 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 the first preset temperature, the system control module 40 controls the operation speed of the blood pump 60 to decrease and controls the power of the power supply output from the wireless power supply device 20 to the blood pump 60 to decrease; when the temperature of the in-vivo battery module exceeds the second preset temperature, the system control module 40 controls the operation speed of the blood pump 60 to decrease and controls the power of the power supply output from the in-vivo battery module 10 to the blood pump 60 to decrease, for example, it can be reduced to a set minimum power to meet the minimum power requirement for blood work.

[0061] Preferably, the blood pump power supply system also includes a voltage-stabilizing output module 50, which 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-stabilizing 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-stabilizing output module 50 can ensure that a constant preset voltage is provided to the blood pump 60, such as providing a preset voltage of 12V. The voltage-stabilizing output module 50 can be, for example, a voltage stabilizer built into the blood pump 60, or a voltage-stabilizing output circuit integrated in the circuit board of the blood pump 60.

[0062] Figure 2 Schematic diagram of the number of wireless power supply devices and in-vivo battery modules of a blood pump power supply system according to an embodiment of the present invention. The in-vivo battery module is at least one group and the number of wireless power supply devices is at least one. Figure 2 Preferably, there are at least two groups of in-vivo battery modules 10, and at least two groups of in-vivo battery modules 10 are connected in parallel without interfering with each other. Correspondingly, there may also be at least two wireless power supply devices 20, and at least two wireless power supply devices 20 are connected in parallel without interfering with each other. The number of in-vivo battery modules 10 and wireless power supply devices 20 may be the same or different. The multiple quantity design of the wireless power supply device 20 can ensure the redundant input of the wireless power supply device 20, making the power supply reliability higher. The multiple quantity design of the in-vivo battery module 10 ensures that the redundant backup time of the in-vivo battery module 10 is prolonged.

[0063] Figure 3 FIG. 1 is a schematic diagram of a wireless power supply device according to an embodiment of the present invention. Figure 3 , further, this embodiment can configure 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 access the alternating current, and the internal receiving coil 23 is connected to the blood pump 60. The external transmitting coil 22 and the internal receiving coil 23 are both 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 and is located under the patient's body surface tissue 90. Then, a puncture hole is made on 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, so that the wireless power supply device 20 is installed. 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 the principles of electromagnetic induction, magnetic field resonance, radio waves, electric field coupling, etc.

[0064] Figure 4 FIG. 2 is another schematic diagram of a power supply system according to an embodiment of the present invention. Figure 4Furthermore, the wireless power supply device 20 also includes a transmitting drive circuit 24 that provides alternating current to the external transmitting coil 22. The output mode of the alternating current of the transmitting drive circuit 24 is a forward type, a flyback type, or a push-pull type. This ensures that the transmitting drive circuit 24 is more stable and reliable, and it is easier to realize the miniaturization design of the wireless power supply device 20.

[0065] Furthermore, regarding the method of charging and storing energy in 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 in-vivo battery module 10 to power 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 further includes a battery power management module 70. After the in-vivo battery module 10 stops supplying power to the blood pump 60, the battery power management module 70 continuously detects the state of the in-vivo battery module 10. When the battery power management module 70 detects that the state of the in-vivo battery module 10 meets the preset conditions, it notifies the system control module 40, and the system control module 40 controls the wireless power supply device 20 to charge the in-vivo battery module 10. The preset conditions include but are not limited to: the current of the in-vivo battery module 10 is less than the current threshold (that is, the current of the in-vivo battery module 10 is lower than the third current threshold) and the voltage of the in-vivo battery module 10 is less than the voltage threshold (that is, the voltage of the in-vivo battery module 10 is lower than the third voltage threshold).

[0067] Preferably, the blood pump power supply system further includes a rectifying and filtering module, which is used to rectify and filter the current provided by the wireless power supply device 20 and transmit it to the in-vivo battery module 10 for charging. The rectifying and filtering module can be, for example, a capacitor C ( Figure 4 ).

[0068] The following seven stages are used to illustrate the manner in which the blood pump power supply system of this embodiment supplies power to the blood pump 60, as follows:

[0069] Startup phase: the external controller sends a blood pump start signal to the system control module 40 (transmits the blood pump start signal via wireless communication), the system control module 40 controls the start of the blood pump 60 and determines that the blood pump 60 is in the start-up state, the system control module 40 controls the in-body battery module 10 and the wireless power supply device 20 to supply power to the blood pump 60 at the same time, ensuring that the blood pump 60 starts up normally.

[0070] Vibration 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 (that is, the blood pump 60 is in a vibration shock state) based on the first parameter fed back by the acceleration sensor, the angle sensor and the position sensor, the system control module 40 will control the operating speed of the blood pump 60 to decrease, and the system control module 40 still controls the in-body battery module 10 and the wireless power supply device 20 to supply power to the blood pump 60 at the same time, thereby meeting the high power required when the blood pump 60 is in a vibration shock state.

[0071] Stable working stage: 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 state detection module 30, the system control module 40 cuts off the power supply from the in-body 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 stage: 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 power supply mode for the blood pump 60 while charging the internal battery module 10.

[0073] Vibration shock stage under 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 the voltage sensor. When the voltage parameter of the second parameter is less than or equal to the minimum working voltage, it is considered that the active control mode of the system control module 40 has failed, and 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 shock state according to the second parameter, and controls the in-body battery module 10 and the wireless power supply device 20 to supply power to the blood pump 60 at the same time.

[0074] Power failure stage: the system control module 40 detects the current and voltage of the in-vivo battery module 10, and detects the current and voltage of the wireless power supply device 20. When the current and voltage of the in-vivo battery module 10 are both lower than the respective set thresholds, it is determined that the in-vivo battery 10 is in a fault state, and the system control module 40 controls the wireless power supply device 20 to supply power to the blood pump 20; when the current and voltage of the wireless power supply device 20 are both lower than the respective set thresholds, it is determined that the wireless power supply device 20 is in a fault state, and the system control module 40 controls the in-vivo battery module 10 to supply power to the blood pump 60. The system control module 40 also sends a fault warning signal about the in-vivo battery module 10 or the wireless power supply device 20 to the external controller.

[0075] Temperature detection stage: the temperature detection module 80 detects the temperature of the wireless power supply device 20 and the temperature of the in-vivo battery module 10. When the temperature of the wireless power supply device 20 exceeds a first preset temperature, the system control module 40 controls the blood pump 60 to reduce the operating speed, and controls the wireless power supply device 20 to reduce the power output to the blood pump 60. When the temperature of the in-vivo battery module 10 exceeds a second preset temperature, the system control module 40 controls the blood pump 60 to reduce the operating speed, and controls the in-vivo battery module 10 to reduce the power output to the blood pump 60, for example, it can be reduced to a set minimum power to meet the minimum power requirement for blood work, thereby maintaining the patient's minimum life support mode.

[0076] Although the present invention is disclosed as above with preferred embodiments, the above embodiments are not intended to limit the present invention. For any technician familiar with the art, without departing from the scope of the technical solution of the present invention, the technical content disclosed above can be used to make many possible changes and modifications to the technical solution of the present invention, or modified into equivalent embodiments of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still belongs to the scope of protection of the technical solution of the present invention.

Claims

1. A blood pump power supply system, characterized in that: include: an in-body battery module that powers the blood pump; a wireless power supply device, which can supply power to the blood pump; A state detection module, which is used to detect a first parameter of the blood pump, wherein the first parameter includes a motion state parameter and a position parameter of the blood pump; The system control module has an active control mode, and the active control mode 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, the system control module 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, 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.

2. The blood pump power supply system according to claim 1, characterized in that: The wireless power supply device includes an annular iron core, an external transmitting coil and an internal receiving coil, wherein the external transmitting coil is used to access alternating current, the internal receiving coil is connected to the blood pump, and both the external transmitting coil and the internal receiving coil are wound around the annular iron core.

3. The blood pump power supply system according to claim 2, characterized in that: The wireless power supply device also includes a transmitting drive circuit for providing alternating current to the external transmitting coil, and the output mode of the alternating current of the transmitting drive circuit is a forward type, a flyback type or a push-pull type.

4. The blood pump power supply system according to claim 1, characterized in that: The active control mode is further configured as follows: when the system control module determines that the blood pump is in a vibration impact state according to the first parameter, 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.

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, which second parameter includes a current parameter and a voltage parameter of the motor of the blood pump; the system control module also has a hardware control mode, and the hardware control mode is configured as follows: when the system control module determines that the blood pump is in a vibration impact state based on the second parameter, it controls the in-body battery module and the wireless power supply device to supply power to the blood pump at the same time.

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 sign of the active control mode failure is configured as: 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 state 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 detect the current and voltage of the wireless power supply device; The system control module controls the wireless power supply device to supply power to the blood pump when it determines that the in-vivo battery module is in a fault state, and the sign that the in-vivo battery module is in a fault state is configured as: the current and voltage of the in-vivo battery module are both lower than respective set thresholds; When the system control module determines that the wireless power supply device is in a fault state, it controls the in-body battery module to supply power to the blood pump. The sign that the wireless power supply device is in a fault state is configured as: 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 a fault warning signal to an external controller to provide feedback that the in-body battery module and / or the wireless power supply device is in a fault state.

10. The blood pump power supply system according to claim 1, characterized in that: The blood pump power supply system further comprises a temperature detection module, wherein the temperature detection module is used to detect the temperature of the wireless power supply device and the temperature of the in-vivo battery module; The system control module controls the blood pump to reduce the operating speed when the temperature of the wireless power supply device exceeds a first preset temperature, and controls the wireless power supply device to reduce the power output to the blood pump; The system control module controls the blood pump to reduce the operating speed when the temperature of the in-vivo battery module exceeds a second preset temperature, 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 group, and the wireless power supply device is at least one.

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

13. The blood pump power supply system according to claim 12, characterized in that: The blood pump power supply system further comprises a battery power management module, and when the battery power management module detects that the in-vivo battery module meets a preset condition, the system control module controls the wireless power supply device to charge the in-vivo battery module; The preset condition includes: 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.

14. The blood pump power supply system according to claim 1, characterized in that: The blood pump power supply module also includes a voltage stabilizing 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, which are used to detect the first parameter of the blood pump.

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