Power supply control method, power supply device, and medical device

Abstract

This application relates to a power supply control method, a power supply device, and a medical device. The power supply control method includes, in response to a start signal from the medical device, sequentially supplying power to multiple coils of the power supply device; acquiring a first operating voltage value for each coil and comparing the first operating voltage values ​​with each other; defining the coils corresponding to different first operating voltage values ​​as operating coils; and continuously supplying power to the operating coils in response to an operating signal from the medical device. This power supply control method can select the most suitable coil as the operating coil based on information such as the actual working scenario, the placement location, and the patient's posture, and supply power to the device implanted in the patient's body. This control method ensures that the output voltage of the power supply device remains stable within a preset range, thereby effectively improving the therapeutic effect and accuracy of the medical device during operation, ensuring the reliability and stability of the power supply device during operation, and optimizing the patient's user experience and treatment outcome.

Description

Technical Field

[0001] This application relates to the field of medical devices, and more particularly to a power supply control method, a power supply device, and a medical device. Background Technology

[0002] In modern medicine, implantable medical devices have become important tools for treating certain diseases. For example, hypoglossal nerve stimulators are widely used to treat respiratory disorders and sleep problems. Existing implantable medical devices typically require the use of an external adhesive device to provide wireless power to the electrodes of the implantable device.

[0003] Taking a hypoglossal nerve stimulator as an example, during treatment, the patient needs to wear a patch with a fixed transmission coil. The patch is placed on the mandible and corresponds to the implanted hypoglossal nerve stimulator to provide wireless energy signal transmission. However, because patients often turn over or turn their heads during sleep, the patch may shift, leading to risks such as disconnection or failure. Summary of the Invention

[0004] This application provides a power supply control method, a power supply device, and a medical device to address some or all of the shortcomings in the related technologies.

[0005] This application provides a power supply control method applicable to medical devices, wherein the medical devices include a power supply device, and the power supply control method includes: In response to the start signal of the medical device, power is sequentially supplied to multiple coils of the power supply device; Obtain the first operating voltage value of each coil and compare the first operating voltage values ​​with each other; The coils corresponding to the first working voltage values ​​with different values ​​are defined as working coils; In response to the operating signal of the medical device, the operating coil is continuously powered.

[0006] Optionally, the medical device further includes an implantable device, and after continuously supplying power to the working coil in response to the working signal of the medical device, it further includes: In response to the confirmation signal, the second operating voltage value of the implanted device is acquired in real time; Compare the second operating voltage value with the preset standard voltage value; Adjust the first operating voltage value of the working coil based on the comparison results.

[0007] Optionally, adjusting the first operating voltage value of the operating coil based on the comparison result includes: If the second operating voltage value is lower than the standard voltage value, then the first operating voltage value of the operating coil is increased; If the second operating voltage value is higher than the standard voltage value, then the first operating voltage value of the operating coil is reduced.

[0008] Optionally, after acquiring the second operating voltage value of the implanted device in real time, the method further includes: Determine whether the second operating voltage value is within the voltage calibration range; If the determination result is negative, a switching coil signal is output.

[0009] Optionally, the power supply control method further includes: In response to the switching coil signal, power is supplied to multiple coils sequentially; Obtain the first operating voltage value of each coil and compare the first operating voltage values ​​with each other; The coils corresponding to the first working voltage values ​​with different values ​​are defined as working coils; In response to the operating signal of the medical device, the operating coil is continuously powered.

[0010] Optionally, after obtaining the first operating voltage value of each of the coils and comparing the first operating voltage values ​​with each other, the method further includes: If the first operating voltage values ​​of each coil are the same, then a power-off signal is output. In response to the shutdown signal, the power supply device is controlled to shut down.

[0011] Optionally, the step of sequentially supplying power to a plurality of coils in response to the activation signal of the medical device includes: Multiple coils are powered sequentially during the first time period; The coil is switched at each time point; The first time period includes N time nodes, where N is an integer greater than or equal to 2.

[0012] Optionally, the real-time acquisition of the second operating voltage value of the implanted device includes: The second operating voltage value of the implanted device is continuously acquired during the second time period; At each time point, the second operating voltage value of the implanted device is acquired; The second time period includes M time nodes, where M is an integer greater than or equal to 2.

[0013] This application also provides a power supply device for use in medical devices, the power supply device comprising: Multiple coils, which are used to output current; A control unit, electrically connected to the coil, is used to execute the power supply control method as described above; and A feedback unit is electrically connected to both the coil and the control unit, and is used to obtain the first operating voltage value of the coil.

[0014] This application also provides a medical device, including an implantable device and a power supply device as described above; the power supply device further includes a wireless communication unit; the implantable device includes a sampling unit; The wireless communication unit is electrically connected to the control unit; the sampling unit is used to collect the second operating voltage value of the implanted device and send it to the control unit through the wireless communication unit.

[0015] The technical solutions provided by the embodiments of this application may include the following beneficial effects: As can be seen from the above embodiments, the power supply control method of this application can select the most suitable coil with the most reasonable working voltage value as the working coil based on the multiple coil designs of the power supply device, according to information such as the actual working scenario, the attachment location, and the patient's body posture, and then supply power to the device implanted in the patient's body. This control method ensures that the output voltage of the power supply device is stabilized within a preset range, thereby effectively improving the therapeutic effect and accuracy of the medical device during operation, ensuring the reliability and stability of the power supply device during operation, and optimizing the patient's user experience and treatment effect.

[0016] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this application. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a partial flowchart of a power supply control method in one embodiment of this application; Figure 2 This is a complete flowchart of a power supply control method in one embodiment of this application. Detailed Implementation

[0019] The technical solutions in the embodiments (or "implementations") of this application will be clearly and completely described herein with reference to the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0020] If the embodiments of this application contain terms relating to directional indications or positional relationships (such as up, down, left, right, front, back, inside, outside, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative positional relationships and movement of the components in a specific posture (as shown in the attached figures); if the specific posture changes, the directional indications or positional relationships will also change accordingly. Furthermore, the terms "first" and "second" used in the embodiments of this application are only for descriptive convenience and should not be construed as indicating or implying relative importance.

[0021] In modern medicine, implantable medical devices have become important tools for treating certain diseases. For example, hypoglossal nerve stimulators are widely used to treat respiratory disorders and sleep problems. Existing implantable medical devices typically require the use of an external adhesive device to provide wireless power to the electrodes of the implantable device.

[0022] Taking a hypoglossal nerve stimulator as an example, during treatment, the patient needs to wear a patch with a fixed transmission coil. The patch is placed on the mandible and corresponds to the implanted hypoglossal nerve stimulator to provide wireless energy signal transmission. However, because patients often turn over or turn their heads during sleep, the patch may shift, leading to risks such as disconnection or failure.

[0023] In existing designs, the voltage output of the patch can only be adjusted by detecting changes in the voltage at the receiving end. However, this method will fail due to changes in the patient's posture, and there is also a risk that unstable voltage may cause damage to the medical equipment and the human body.

[0024] Based on this, this application provides a power supply control method applicable to medical devices.

[0025] In an alternative embodiment, the medical device includes a power supply, such as Figure 1 As shown, the power supply control method includes: S1. In response to the start signal of the medical device, power is supplied to multiple coils of the power supply device in sequence; S2. Obtain the first working voltage value of each coil and compare the first working voltage values ​​with each other; S3. Define the coils corresponding to the first working voltage values ​​with different values ​​as working coils; S4. In response to the working signal of the medical device, continuously power the working coil.

[0026] In practical applications, patients can place the power supply device (i.e., the power supply patch) on their chin, aligning it with the implanted device inside their body. Once the patient turns on the medical device, the power supply device is powered on and sequentially monitors the operating voltage of each coil. Following the power supply control method described above, the coil with the higher operating voltage is selected to provide a stable and precise power supply to the implanted device. This forms an open-loop control scheme.

[0027] Subsequently, with the power supply, the implanted device can provide signal stimulation to specific areas of the patient. For example, when the patient's tongue base collapses and obstructs the airway, the implanted device will immediately provide electrical stimulation to the tongue base to make the patient's tongue protrude forward, thereby releasing the airway and ensuring the continuity and safety of the patient's sleep process.

[0028] As can be seen, the power supply control method described in this application can select the most suitable coil with the most reasonable operating voltage value as the working coil based on the multiple coil designs of the power supply device, according to information such as the actual working scenario, the attachment location, and the patient's body posture, and then supply power to the device implanted in the patient's body. This control method ensures that the output voltage of the power supply device is stabilized within a preset range, thereby effectively improving the therapeutic effect and accuracy of the medical device during operation, ensuring the reliability and stability of the power supply device, and optimizing the patient's user experience and treatment outcome.

[0029] Meanwhile, this application provides a power supply device for medical devices. The power supply device includes multiple coils, a control unit, and a feedback unit. The multiple coils are used to output current, and the control unit is electrically connected to the coils and used to execute the power supply control method described above. The feedback unit is electrically connected to both the coils and the control unit and is used to obtain the first operating voltage value of the coils.

[0030] The power supply device of this application, through the design of multiple coils, can more completely cover the patient's mandibular region, thereby ensuring that the power supply device can provide a more stable power supply. Furthermore, through the design of the control unit and feedback unit, the voltage of the transmitting coil can be accurately detected and adjusted in real time, thereby achieving precise control of the implanted device in the patient's body. This effectively improves the treatment effect and accuracy of the medical device during operation, ensures the reliability and stability of the power supply device during operation, and optimizes the patient's user experience and treatment effect.

[0031] In addition, this application also provides a medical device, including an implantable device and a power supply device as described above. The power supply device further includes a wireless communication unit, and the implantable device includes a sampling unit. The wireless communication unit is electrically connected to the control unit, and the sampling unit is used to collect a second operating voltage value of the implantable device and transmit it to the control unit via the wireless communication unit.

[0032] The medical device described in this application, through the coordinated design of the implantable device and the power supply device, not only achieves closed-loop control of the power supply device but also adjusts the output voltage and working coil of the power supply device in real time according to changes in the operating voltage of the implantable device. This allows for a faster and more accurate switch to a more effective output voltage range, or a direct switch to a coil with better coupling and voltage regulation. Therefore, this design ensures stable output voltage and high reliability of the power supply device, meeting the power supply requirements of precision equipment such as power-assisted dressings, thus optimizing the patient's user experience. Furthermore, this design optimizes the output energy consumption of the power supply device, further reducing the overall energy consumption of the medical device and making it suitable for small, portable devices.

[0033] Specifically, in practical applications, the DC power supply of the power supply device provides input power to the entire system. In some optional embodiments, the power supply device also includes an inverter module and a drive module. The inverter module converts DC power into high-frequency AC power, thereby matching its output frequency with the resonant frequency of the working coil. Multiple coils are arranged in an array-like three-dimensional configuration to further cover the installation area of ​​the implanted device. The drive module, according to instructions from the control unit, selects one or more transmitting coils and adjusts their power supply.

[0034] The drive module sequentially connects each coil in the coil array according to a preset order, while the control unit monitors the voltage changes of each coil through the voltage detection circuit (such as a feedback unit) of the power supply device. When the voltage of a certain coil deviates significantly due to coupling with the receiving coil, the drive module determines that the coil is the optimal coupling coil, locks the coil as the current working coil, and stops polling.

[0035] In another optional embodiment, the voltage detection circuit and inverter regulation circuit of the power supply device can also be configured according to the actual working scenario and user needs. For example, the voltage detection circuit can be designed as a combination structure of "voltage divider resistor, rectifier bridge, and filter capacitor". During operation, the AC voltage of the power supply device is stepped down by the voltage divider resistor, converted into DC voltage by the rectifier bridge, and after the ripple is filtered out by the filter capacitor, it can be input to the ADC (Analog-to-Digital Converter Port) interface of the control unit for sampling, thereby achieving accurate detection of the voltage of the working coil. The inverter regulation circuit can adopt a full-bridge inverter topology design. During operation, the control unit controls the conduction time of the MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) in the inverter bridge through PWM (Pulse-width modulation) signal, changing the effective value of the output AC power, realizing continuous adjustment of the transmission power, and thus accurately controlling the voltage of the implanted device. Furthermore, this application adopts high-precision voltage sampling and PWM regulation technology, which makes the device highly accurate in regulation, and the voltage deviation can be controlled within ±0.2V, meeting the power supply requirements of precision equipment such as medical dressings.

[0036] The implantable device can be specifically designed as a combination of a receiving coil, a rectifier and filter module, a voltage regulator module, and a load interface. The receiving coil obtains power through electromagnetic coupling with the working coil; the rectifier and filter module converts the induced AC power into DC power; and the voltage regulator module initially stabilizes the DC voltage before powering components such as medical sensors and microprocessors through the load interface. The sampling unit described in this paper can utilize a high-precision differential operational amplifier to build the sampling circuit, improving the sensitivity to small voltage changes. The wireless communication unit can use a BLE (Bluetooth Low Energy) module or an NFC (Near Field Communication) module, thereby reducing the power consumption of the power supply device through its low-power characteristics and further extending the battery life. Furthermore, in some optional embodiments, a signal conditioning module can be added according to actual needs to filter, amplify, and perform analog-to-digital conversion on the voltage signal of the sampling unit, thus converting the analog signal into a digital signal.

[0037] Therefore, it can be seen that, in the above embodiments, the embodiments can be combined and complement each other without causing conflict. Thus, this application does not limit the specific structure of the medical device to the scope described above.

[0038] It should be noted that, for ease of understanding, the optional embodiments described in this application all use a hypoglossal nerve stimulator for treating sleep-disordered breathing as an example. Therefore, the power supply device is actually a power supply patch attached to the patient's lower jaw. However, this application does not limit the specific structure and application scenarios of the power supply device and medical device to the hypoglossal nerve stimulator, and will not elaborate further below. In actual working scenarios, medical devices can also be implantable pacemakers, implantable bionic eyes, cochlear implants, and other devices implanted in the human body, and this application does not impose any restrictions on this.

[0039] like Figure 2 As shown, in another optional embodiment, after S4, the following is also included: S5. In response to the confirmation signal, acquire the second operating voltage value of the implanted device in real time; S6. Compare the second working voltage value with the preset standard voltage value; S7. Adjust the first working voltage value of the working coil according to the comparison result.

[0040] In this application, the second working voltage value of the implantable device is acquired in real time through a sampling unit, and the working voltage of the working coil is adjusted according to the difference between the second working voltage value and the preset standard voltage value, thereby ensuring that the power supply voltage of the working coil meets the treatment needs of the medical device, thus ensuring the working efficiency and treatment effect of the device.

[0041] In such Figure 2 In the optional embodiment shown, step S7 includes: S71. If the second working voltage value is lower than the standard voltage value, then increase the first working voltage value of the working coil. S72. If the second working voltage value is higher than the standard voltage value, then reduce the first working voltage value of the working coil.

[0042] Specifically, if the sampling unit detects that the operating voltage of the implanted device is lower than the standard voltage value, the control unit will increase the operating voltage of the working coil to provide a stronger stimulation intensity to the implanted device. Conversely, if the sampling unit detects that the operating voltage of the implanted device is higher than the standard voltage value, it indicates that the output voltage of the working coil is too high, which may cause stinging or discomfort to the patient. Therefore, the control unit will reduce the operating voltage of the working coil until the second operating voltage value of the implanted device is equivalent to the preset standard voltage value.

[0043] As can be seen, the medical device of this application adds a voltage feedback process at the implantation device end, thereby forming a closed-loop control link. This design can compensate for voltage deviations caused by load fluctuations, device displacement and other factors in real time, thereby stabilizing the power supply voltage of the power supply device within the preset range, improving the working reliability and treatment effect of the medical device.

[0044] In such Figure 2 In the optional embodiment shown, after S5, the following is further included: S51. Determine whether the second working voltage value is within the voltage calibration range; S52. If the determination result is negative, output the switching coil signal.

[0045] Specifically, if the voltage output of the currently operating coil is no longer suitable for the needs of the implanted device, it indicates that the power supply or implanted device has shifted due to changes in the patient's posture or external forces. Therefore, the control unit can output a switching coil signal to re-determine a new operating coil. This design allows the device to quickly switch to a better coupling coil and adjust the voltage, achieving dynamic and stable power supply in three-dimensional space and improving user flexibility.

[0046] In an optional embodiment, the power supply control method further includes: In response to a switching coil signal, power is supplied to multiple coils sequentially. Obtain the first operating voltage value for each coil and compare the first operating voltage values ​​with each other; The coils corresponding to the different first working voltage values ​​are defined as working coils; In response to the working signals of the medical device, it continuously supplies power to the working coil.

[0047] Once the control unit outputs a switching coil signal, the process from steps S1 to S4 can be repeated to determine a new working coil.

[0048] In such Figure 2 In the optional embodiment shown, after S2, the following is further included: S21. If the first operating voltage values ​​of each coil are the same, then output a shutdown signal; S22. In response to the shutdown signal, control the power supply device to shut down.

[0049] When the first operating voltage values ​​of all coils are the same, it means that the setting position of the power supply device may be completely misaligned with the implanted device, or it may have been displaced, resulting in the two being unable to couple effectively. In this case, the control unit will shut down the power supply device to remind the patient to adjust the placement position of the power supply device or check whether the device is damaged.

[0050] In such Figure 2 In the optional embodiment shown, S1 includes: S11. Power supply is sequentially provided to multiple coils during the first time period; S12. Switch the coil at each time point; The first time period includes N time nodes, where N is an integer greater than or equal to 2.

[0051] In such Figure 2 In the optional embodiment shown, S5 includes: S53. During the second time period, continuously acquire the second operating voltage value of the implanted device; S54. Obtain the second operating voltage value of the implanted device at each time point; The second time period includes M time nodes, where M is an integer greater than or equal to 2.

[0052] In practical applications, the methods for obtaining the first and second working voltage values ​​are similar, both employing sampling at multiple time points within a certain time period to complete coil switching and power supply voltage adjustment. This design optimizes the overall control method, enabling the device to maintain lower power consumption while ensuring normal operation. It is suitable for various portable medical devices, has lower operating costs, and provides a better user experience.

[0053] In the actual workflow, taking a medical temperature monitoring patch as an example, the patch is configured with a DC power supply capable of generating a 12V input voltage. The inverter module outputs a 2MHz high-frequency AC power. The coil array adopts a 4×4×2 three-dimensional arrangement (i.e., a total of 32 coils, coil inductance L1=10μH, resonant capacitor C=130pF). The drive module uses a MOSFET driver chip IR2104, and the control unit MCU is configured as an STM32F103 with a built-in voltage comparison algorithm and a response time ≤10ms. Simultaneously, the receiving device implanted in the patient's body is configured with a receiving coil inductance L2=10μH. The rectification and filtering module uses a Schottky diode rectifier bridge and a 100μF electrolytic capacitor. The voltage regulator module uses an LDO (low dropout regulator) chip AMS1117-3.3 to power the temperature sensor (DS18B20). The sampling unit uses an operational amplifier LM324 to build a differential circuit with a sampling accuracy of 0.01V. The wireless communication unit is a BLE module CC2541, and the signal conditioning module integrates a 12-bit ADC.

[0054] When the patient starts the device, the control unit will first set the reference power supply voltage U0 of the implanted device (preset according to the needs of the device and the patient, such as 3.3V, 5V, etc.), and initialize the working state of the coil array to polling mode, and the inverter module outputs the initial high-frequency AC signal.

[0055] Subsequently, the drive module sequentially connects each coil in the coil array according to a preset order, while the control unit monitors the voltage changes of each coil through the voltage detection circuit (such as a feedback unit) of the power supply device. When the voltage of a certain coil deviates significantly due to coupling with the receiving coil, the coil is determined to be the optimal coupling coil, the drive module locks the coil as the current working coil, and stops polling.

[0056] During treatment, the sampling unit of the implanted device collects the actual power supply voltage U1 at the load end in real time. After processing by the signal conditioning module, the U1 data is wirelessly transmitted to the control unit by the wireless communication unit. The control unit compares U1 with the reference voltage U0 and calculates the deviation value ΔU = U1 - U0. When ΔU is greater than the preset threshold range (e.g., 0.2V), it indicates that the voltage of the implanted device is too high. The control unit sends a command to the inverter module to reduce the amplitude of its output AC power, thereby reducing the induced voltage of the receiving coil and making U1 approach U0. When ΔU is less than the preset threshold range, it indicates that the receiving voltage is too low. The control unit instructs the inverter module to increase the output AC amplitude and increase the induced voltage of the receiving coil. When ΔU is within the preset threshold range, the power supply voltage is determined to be stable, no adjustment is needed, and the system maintains its current operating state.

[0057] In addition, if the implanted device or power supply device moves in three-dimensional space, causing the coupling between the current working coil and the receiving coil to weaken, the voltage detection circuit of the power supply device will detect a voltage change. At this time, as described above, the control unit will repeat steps S1 to S4 to reselect the optimal coupling coil and repeat the closed-loop adjustment process in the above steps based on the new coupling state to ensure that the implanted device can always obtain a stable voltage supply.

[0058] Of course, it should be noted that the specific structure and numerical settings of the equipment described in this article are for the convenience of readers and are not limited to the specific scope described in this article.

[0059] It should be noted that the technical solutions or features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of this application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; all modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A power supply control method, characterized in that, Applicable to medical devices, the medical devices including power supply devices, the power supply control method including: In response to the start signal of the medical device, power is sequentially supplied to multiple coils of the power supply device; Obtain the first operating voltage value of each coil and compare the first operating voltage values ​​with each other; The coils corresponding to the first working voltage values ​​with different values ​​are defined as working coils; In response to the operating signal of the medical device, the operating coil is continuously powered.

2. The power supply control method according to claim 1, characterized in that, The medical device further includes an implantable device, and after continuously supplying power to the working coil in response to the working signal of the medical device, it further includes: In response to the confirmation signal, the second operating voltage value of the implanted device is acquired in real time; Compare the second operating voltage value with the preset standard voltage value; The first operating voltage value of the working coil is adjusted based on the comparison results.

3. The power supply control method according to claim 2, characterized in that, The step of adjusting the first operating voltage value of the working coil according to the comparison result includes: If the second operating voltage value is lower than the standard voltage value, then the first operating voltage value of the operating coil is increased; If the second operating voltage value is higher than the standard voltage value, then the first operating voltage value of the operating coil is reduced.

4. The power supply control method according to claim 2, characterized in that, After acquiring the second operating voltage value of the implanted device in real time, the method further includes: Determine whether the second operating voltage value is within the voltage calibration range; If the determination result is negative, a switching coil signal is output.

5. The power supply control method according to claim 4, characterized in that, The power supply control method further includes: In response to the switching coil signal, power is supplied to multiple coils sequentially; Obtain the first operating voltage value of each coil and compare the first operating voltage values ​​with each other; The coils corresponding to the first working voltage values ​​with different values ​​are defined as working coils; In response to the operating signal of the medical device, the operating coil is continuously powered.

6. The power supply control method according to claim 1, characterized in that, After obtaining the first operating voltage value of each coil and comparing the first operating voltage values ​​with each other, the method further includes: If the first operating voltage values ​​of each coil are the same, then a power-off signal is output. In response to the shutdown signal, the power supply device is controlled to shut down.

7. The power supply control method according to claim 1, characterized in that, The process of sequentially supplying power to multiple coils in response to the activation signal of the medical device includes: Multiple coils are powered sequentially during the first time period; The coil is switched at each time point; The first time period includes N time nodes, where N is an integer greater than or equal to 2.

8. The power supply control method according to claim 2, characterized in that, The real-time acquisition of the second operating voltage value of the implanted device includes: The second operating voltage value of the implanted device is continuously acquired during the second time period; At each time point, the second operating voltage value of the implanted device is acquired; The second time period includes M time nodes, where M is an integer greater than or equal to 2.

9. A power supply device, characterized in that, The power supply device, used in medical devices, includes: Multiple coils, which are used to output current; A control unit, electrically connected to the coil, and configured to execute the power supply control method as described in any one of claims 1 to 8; and A feedback unit is electrically connected to both the coil and the control unit, and is used to obtain the first operating voltage value of the coil.

10. A medical device, characterized in that, The device includes an implantable device and a power supply device as described in claim 9; the power supply device further includes a wireless communication unit; the implantable device includes a sampling unit; The wireless communication unit is electrically connected to the control unit; the sampling unit is used to collect the second operating voltage value of the implanted device and send it to the control unit through the wireless communication unit.

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