Implantable medical device and medical instrument

Abstract

The utility model provides implantable medical equipment and medical equipment. The implantable medical equipment comprises a control module, a matching module and a charging module, wherein the matching module and the charging module are respectively connected with the control module; the matching module is connected with the charging module; the matching module comprises an antenna, a common matching circuit and a first analog switch which are connected in sequence; the first analog switch and the common matching circuit are respectively connected with the control module; and the antenna is in communication connection with an external in-vitro transmitter and an external terminal. In the mode, by arranging the matching module supporting middle-frequency band matching, the terminal can be used for temporarily charging the implantable medical device while the matched in-vitro emitter is used for charging the implantable medical device, so that the working time of the implantable medical device is prolonged, and the practicability of the implantable medical device is improved. Therefore, the charging convenience of the implantable medical device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to an implantable medical device and a medical device. Background Art

[0002] Currently, most active implantable medical devices on the market use rechargeable lithium batteries to power their circuit systems. These devices are equipped with an external transmitter, which wirelessly charges the implanted battery when the battery is low. However, these transmitters are also typically powered by lithium batteries, making them inconvenient to carry when the transmitter itself is low on power. Furthermore, these transmitters are large, making them difficult for patients to carry around. Utility Model Content

[0003] In view of this, the purpose of the present invention is to provide an implantable medical device and medical instrument, which can be used to charge the implantable medical device using a matching in vitro transmitter while also temporarily charging the implantable medical device using a terminal, thereby increasing the working time of the implantable medical device and further improving the charging convenience of the implantable medical device.

[0004] In the first aspect, an embodiment of the present invention provides an implantable medical device, comprising: a control module and a matching module and a charging module respectively connected to the control module; the matching module is connected to the charging module; the matching module includes an antenna, a shared matching circuit and a first analog switch connected in sequence; the first analog switch and the shared matching circuit are respectively connected to the control module; the antenna is communicatively connected to the external transmitter of the peripheral device and the terminal of the peripheral device; the control module is used to send a first enable signal to the first analog switch to enable the first analog switch; the shared matching circuit is used to determine whether the connection signal received by the antenna is a preset frequency band; the preset frequency band includes a preset external transmitter frequency band and a preset terminal frequency band; if the connection signal is a terminal frequency band, a first disable signal is sent to the first analog switch to disable the first analog switch; the charging module is used to receive the radio frequency field energy sent by the external transmitter when the antenna receives the connection signal and the first analog switch is in the enabled state; and receive the radio frequency field energy sent by the terminal when the antenna receives the connection signal and the first analog switch is in the disabled state.

[0005] Furthermore, the matching module also includes an external transmitter matching circuit; the external transmitter matching circuit is respectively connected to the charging module and the first analog switch; the external transmitter matching circuit is used to connect to the external transmitter when the antenna receives a connection signal and the first analog switch is in an enabled state, so that the external transmitter charges the charging module.

[0006] Furthermore, the matching module also includes an NFC circuit; the NFC circuit is respectively connected to the control module and the shared matching circuit; the NFC circuit is used to obtain the identity information sent by the terminal when the antenna receives a connection signal and the first analog switch is in a disabled state, generate an interrupt signal according to the identity information, and send the interrupt signal to the control module; if an identity authentication success signal sent by the control module is received, it is connected to the terminal so that the terminal charges the charging module.

[0007] Furthermore, the NFC circuit includes a connected NFC chip, an NFC antenna, and a register.

[0008] Furthermore, the charging module also includes a connected lithium battery charging management circuit and a lithium battery; the lithium battery charging management circuit is connected to the control module; the lithium battery charging management circuit is used to obtain the real-time power of the lithium battery in real time; determine whether the real-time power is lower than a preset charging threshold, or whether the real-time power is equal to a preset stop charging threshold; if the real-time power is lower than the charging threshold, send a charging signal to the control module; if the real-time power is equal to the stop charging threshold, send a stop charging signal to the control module.

[0009] Furthermore, the charging module includes a second analog switch; the second analog switch is connected to the control module and the lithium battery respectively; the control module is used to send a second enable signal to the second analog switch when receiving a charging signal to enable the second analog switch; and send a second disable signal to the second analog switch when receiving a stop charging signal to disable the second analog switch; the control module is also used to determine whether the identity information in the interrupt signal complies with the preset identity information rules; if not, send a second disable signal to the second analog switch to disable the second analog switch.

[0010] Furthermore, the implantable medical device also includes: a dynamic tuning module; the control module also includes a resonant circuit; the dynamic tuning module is connected to the control module and the resonant circuit respectively; the control module is used to detect the real-time resonant frequency of the resonant circuit in real time, and determine whether the real-time resonance is within a preset threshold range of a preset operating frequency. If not, a tuning signal is generated according to a preset tuning rule and the real-time resonant frequency, and the tuning signal is sent to the dynamic tuning module so that the dynamic tuning module adjusts the real-time resonant frequency to within a preset threshold range of the preset operating frequency.

[0011] Furthermore, the dynamic tuning module includes a connected DAC and a varactor diode; the DAC is connected to the control module; and the varactor diode is connected to the matching module.

[0012] In a second aspect, an embodiment of the present invention provides a medical device, comprising any of the above-mentioned implantable medical devices, and further comprising an in vitro transmitter and a terminal; the in vitro transmitter and the terminal are both communicatively connected to the implantable medical device.

[0013] Furthermore, the terminal is configured with preset software; the preset software is used to generate identity information that complies with preset identity information rules for the terminal.

[0014] An embodiment of the present utility model provides an implantable medical device and medical instrument, including: a control module and a matching module and a charging module respectively connected to the control module; the matching module is connected to the charging module; the matching module includes an antenna, a shared matching circuit and a first analog switch connected in sequence; the first analog switch and the shared matching circuit are respectively connected to the control module; the antenna is communicatively connected to the external transmitter of the peripheral device and the terminal of the peripheral device; the control module is used to send a first enable signal to the first analog switch to enable the first analog switch; the shared matching circuit is used to determine whether the connection signal received by the antenna is a preset frequency band; the preset frequency band includes a preset external transmitter frequency band and a preset terminal frequency band; if the connection signal is a terminal frequency band, a first disable signal is sent to the first analog switch to disable the first analog switch; the charging module is used to receive the radio frequency field energy sent by the external transmitter when the antenna receives the connection signal and the first analog switch is in the enabled state; and receive the radio frequency field energy sent by the terminal when the antenna receives the connection signal and the first analog switch is in the disabled state. In this method, by setting up a matching module that supports mid-frequency band matching, the implantable medical device can be charged using the matching in vitro transmitter while the terminal can be used to temporarily charge the implantable medical device, thereby increasing the working time of the implantable medical device and improving the charging convenience of the implantable medical device.

[0015] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The objectives and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0016] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A schematic diagram of an implantable medical device provided in Example 1 of the present utility model;

[0019] Figure 2 A schematic diagram of a matching module provided in Example 1 of the present utility model;

[0020] Figure 3 This is a schematic diagram of an NFC circuit provided in Example 1 of the present utility model;

[0021] Figure 4 A schematic diagram of a charging module provided in Example 1 of the present utility model;

[0022] Figure 5 A schematic diagram of another implantable medical device provided in Example 1 of the present utility model;

[0023] Figure 6 A schematic diagram of a dynamic tuning module provided in Example 1 of the present utility model;

[0024] Figure 7 This is a schematic diagram of the medical device provided in Example 2 of the present utility model.

[0025] Icons: 1-control module; 2-matching module; 3-charging module; 4-antenna; 5-common matching circuit; 6-first analog switch; 7-external transmitter matching circuit; 8-NFC circuit; 81-NFC chip; 82-NFC antenna; 83-register; 9-lithium battery charging management circuit; 10-lithium battery; 11-second analog switch; 12-dynamic tuning module; 121-DAC; 122-varicap diode; 13-implantable medical device; 14-external transmitter; 15-terminal. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0027] To facilitate understanding of this embodiment, the embodiment of the utility model is described in detail below.

[0028] Example 1:

[0029] Figure 1 This is a schematic diagram of an implantable medical device provided in Example 1 of the present utility model.

[0030] Reference Figure 1 and Figure 2 The implantable medical device includes: a control module 1 and a matching module 2 and a charging module 3 respectively connected to the control module 1; the matching module 2 is connected to the charging module 3; the matching module 2 includes an antenna 4, a shared matching circuit 5 and a first analog switch 6 connected in sequence; the first analog switch 6 and the shared matching circuit 5 are respectively connected to the control module 1; the antenna 4 is communicatively connected to an external transmitter of an external device and a terminal of the external device.

[0031] Here, the peripheral terminal is a smart device with an NFC function and a preset app (Application) installed, and the smart device can be a mobile phone.

[0032] One implantable medical device corresponds to one matching external transmitting terminal.

[0033] When the implantable medical device needs to be charged, the user turns on the external transmitter or terminal, depending on the actual situation. Wireless power is transmitted between the external transmitter and the implantable medical device using a preset external transmitter frequency band (which can be 6.78MHz). Wireless power is transmitted between the terminal and the implantable medical device using a preset terminal frequency band (which can be 13.56MHz).

[0034] When the external transmitter is activated, its internal power transmission circuit will periodically transmit the Ping signal (detection signal), generating a periodic radio frequency field on the external transmitter's transmitting coil. When the implantable medical device is located within this radio frequency field, the external transmitter and the implantable medical device will perform identity authentication. When the identity authentication is successful, the implantable medical device can be charged through the external transmitter. When the battery of the implantable medical device is fully charged, the implantable medical device actively sends a full-charge signal to the external transmitter. After successfully receiving the full-charge signal sent by the implantable medical device, the external transmitter stops power transmission and resumes the state of periodically transmitting the Ping signal.

[0035] When the terminal is activated, the NFC reader chip integrated within the terminal periodically transmits polling signals, periodically generating a radio frequency field on the NFC transmitting coil. When the implantable medical device is within the radio frequency field, the APP sends identity information based on a private protocol to the NFC circuit 8 within the implantable medical device through the NFC reader chip. After receiving the identity information, the NFC circuit 8 within the implantable medical device stores the identity information in an internal register 83 and generates an interrupt signal to the control module 1 based on the identity information. The control module 1 reads the identity information in the internal register 83 of the NFC tag and performs identity authentication. If the identity information meets the preset identity information rules (the preset identity information rules are used to determine whether the identity authentication information is legal), an identity authentication success signal is generated, allowing the NFC circuit 8 within the implantable medical device to collect radio frequency field energy to power itself; if the identity information does not meet the preset identity information rules, charging will not occur. Verifying identity information through the APP can prevent any terminal with integrated NFC function from being able to wirelessly power the implantable medical device.

[0036] When the battery of the implantable medical device is fully charged, the implantable medical device actively sends a full-charge signal to the terminal. After the terminal successfully receives the full-charge signal sent by the implantable medical device, it stops power transmission.

[0037] The control module 1 is configured to send a first enable signal to the first analog switch 6 to enable the first analog switch 6 .

[0038] Here, the control module 1 is an MCU controller. The enabled state is when the first analog switch 6 is turned on. By default, the first analog switch 6 is in the enabled state.

[0039] A shared matching circuit 5 is used to determine whether the connection signal received by the antenna 4 is in a preset frequency band; the preset frequency band includes a preset external transmitter frequency band and a preset terminal frequency band; if the connection signal is in a terminal frequency band, a first disable signal is sent to the first analog switch 6 to put the first analog switch 6 in a disabled state.

[0040] Here, the matching circuit 5 is used to obtain wireless power in the 6.78 MHz frequency band and wireless power in the 13.56 MHz frequency band.

[0041] The connection signal is one of a Ping signal and a polling signal. The shared matching circuit 5 determines whether the received connection signal is in the 6.78 MHz frequency band or the 13.56 MHz frequency band. If the connection signal is in the 6.78 MHz frequency band, it is determined that the current sender of the connection signal is an external transmitter, and no signal is generated to maintain the first analog switch 6 in the enabled state. If the connection signal is in the 13.56 MHz frequency band, it is determined that the current sender of the connection signal is a terminal, and a first disable signal is generated to switch the first analog switch 6 to the disabled state.

[0042] In one embodiment, referring to Figure 2 The matching module 2 further includes an in vitro transmitter matching circuit 7 ; the in vitro transmitter matching circuit 7 is connected to the charging module 3 and the first analog switch 6 respectively.

[0043] The external transmitter matching circuit 7 is used to connect to the external transmitter when the antenna 4 receives the connection signal and the first analog switch 6 is in the enabled state, so that the external transmitter charges the charging module 3.

[0044] Specifically, external transmitter matching circuit 7 is a circuit capable of matching only in the 6.78 MHz frequency band. When it is determined that the target of the current connection signal is an external transmitter, external transmitter matching circuit 7 receives the radio frequency field energy from the external transmitter. The external transmitter supplies power to charging module 3 through external transmitter matching circuit 7.

[0045] In one embodiment, referring to Figure 2 The matching module 2 further includes an NFC circuit 8; the NFC circuit 8 is connected to the control module 1 and the shared matching circuit 5 respectively.

[0046] The NFC circuit 8 is used to obtain the identity information sent by the terminal when the antenna 4 receives a connection signal and the first analog switch 6 is in a disabled state, generate an interrupt signal based on the identity information, and send the interrupt signal to the control module 1; if an identity authentication success signal is received from the control module 1, it is connected to the terminal so that the terminal charges the charging module 3.

[0047] In one embodiment, referring to Figure 3 The NFC circuit 8 includes a connected NFC chip 81, an NFC antenna 82 and a register 83.

[0048] Specifically, when it is determined that the object currently sending the connection signal is a terminal, the NFC circuit 8 stores the identity information in the register 83 after receiving the identity information, generates an interrupt signal according to the identity information, and sends the interrupt signal to the control module 1.

[0049] The control module 1 reads the identity information in the interrupt signal and verifies the identity information. If the identity information meets the preset identity information rules, an identity authentication success signal is generated to enable the NFC circuit 8 to collect radio frequency field energy to power itself; if the identity authentication information does not meet the preset identity information rules, an identity authentication failure signal is generated to stop the NFC circuit 8 from working.

[0050] The charging module 3 is used to receive the radio frequency field energy sent by the external transmitter when the antenna 4 receives a connection signal and the first analog switch 6 is in an enabled state; and to receive the radio frequency field energy sent by the terminal when the antenna 4 receives a connection signal and the first analog switch 6 is in a disabled state.

[0051] In one embodiment, referring to Figure 4 The charging module 3 also includes a connected lithium battery charging management circuit 9 and a lithium battery 10; the lithium battery charging management circuit 9 is connected to the control module 1.

[0052] The lithium battery charging management circuit 9 is used to obtain the real-time power level of the lithium battery 10 in real time; determine whether the real-time power level is lower than a preset charging threshold, or whether the real-time power level is equal to a preset stop charging threshold; if the real-time power level is lower than the charging threshold, send a charging signal to the control module 1; if the real-time power level is equal to the stop charging threshold, send a stop charging signal to the control module 1.

[0053] Here, the preset charging threshold and the preset charging stop threshold are both preset according to actual conditions, and the preset charging stop threshold can be set to 100%.

[0054] In one embodiment, referring to Figure 4 The charging module 3 includes a second analog switch 11; the second analog switch 11 is connected to the control module 1 and the lithium battery 10 respectively.

[0055] The control module 1 is configured to send a second enable signal to the second analog switch 11 upon receiving a charging signal, so that the second analog switch 11 is in an enabled state; and send a second disable signal to the second analog switch 11 upon receiving a stop charging signal, so that the second analog switch 11 is in a disabled state.

[0056] The control module 1 is further configured to determine whether the identity information in the interrupt signal complies with a preset identity information rule; if not, send a second disable signal to the second analog switch 11 to disable the second analog switch 11 .

[0057] Here, the second analog switch 11 is used to control whether the lithium battery 10 starts to charge.

[0058] In one embodiment, referring to Figure 5The implantable medical device further includes a dynamic tuning module 12, which is connected to the control module 1 and the matching module 2. The control module also includes a resonant circuit.

[0059] In one embodiment, referring to Figure 6 The dynamic tuning module 12 includes a DAC 121 (digital-to-analog converter) and a varactor diode 122 connected to each other; the DAC 121 is connected to the control module 1 ; and the varactor diode 122 is connected to the matching module 2 .

[0060] The control module 1 is used to detect the real-time resonant frequency of the resonant circuit in real time, determine whether the real-time resonance is within a preset threshold range of a preset operating frequency, and if not, generate a tuning signal according to a preset tuning rule and the real-time resonant frequency, and send the tuning signal to the dynamic tuning module 12, so that the dynamic tuning module 12 adjusts the real-time resonant frequency to within the preset threshold range of the preset operating frequency.

[0061] Here, when using a terminal with NFC function to power an implantable medical device, if the position of the terminal changes, the coupling coefficient between the terminal and the implantable medical device will change, thereby changing the self-inductance and mutual inductance of the terminal and the implantable medical device, resulting in detuning of the resonant circuit; or different users may use different terminals, and the NFC coil inductance, shape, size and other parameters of different terminal models will be different. If the implantable medical device uses a resonant circuit with fixed parameters, it cannot adapt to the terminal model used, which will inevitably lead to detuning when the user uses certain models of implantable medical devices, and the output power of the implantable medical device will be greatly reduced.

[0062] The preset threshold range is preset according to actual conditions and is used to represent the difference between the real-time resonant frequency and the preset operating frequency.

[0063] The preset operating frequency is the transmission frequency of the in vitro transmitter or terminal. The control module 1 detects the real-time resonant frequency of the resonant circuit and determines whether the real-time resonant frequency is within the threshold range of the transmission frequency of the in vitro transmitter or terminal. If not, it is determined that the difference between the real-time resonant frequency and the transmission frequency of the in vitro transmitter or terminal is large, and the real-time resonant frequency is adjusted to the threshold range of the transmission frequency of the in vitro transmitter or terminal through the dynamic tuning module 12.

[0064] Specifically, when the control module 1 detects that the resonant circuit is detuned, the control module 1 controls the DAC 121 to output different voltage values to be applied to the varactor diode 122, thereby changing the capacitance of the varactor diode 122, thereby dynamically adjusting the resonant frequency of the resonant circuit to be the same as the preset operating frequency, even if it operates in a resonant state.

[0065] An embodiment of the present utility model provides an implantable medical device, comprising: a control module and a matching module and a charging module respectively connected to the control module; the matching module is connected to the charging module; the matching module includes an antenna, a shared matching circuit and a first analog switch connected in sequence; the first analog switch and the shared matching circuit are respectively connected to the control module; the antenna is communicatively connected to an external transmitter of an external device and a terminal of the external device; the control module is used to send a first enable signal to the first analog switch to enable the first analog switch; the shared matching circuit is used to determine whether the connection signal received by the antenna is a preset frequency band; the preset frequency band includes a preset external transmitter frequency band and a preset terminal frequency band; if the connection signal is a terminal frequency band, a first disable signal is sent to the first analog switch to disable the first analog switch; the charging module is used to receive the radio frequency field energy sent by the external transmitter when the antenna receives the connection signal and the first analog switch is in the enabled state; and receive the radio frequency field energy sent by the terminal when the antenna receives the connection signal and the first analog switch is in the disabled state. In this method, by setting up a matching module that supports mid-band matching, the implantable medical device can be charged using the matching external transmitter while also temporarily charging the implantable medical device using the terminal, thereby increasing the operating time of the implantable medical device and improving the charging convenience of the implantable medical device. At the same time, the implantable medical device is also equipped with a dynamic tuning module that can adapt to various models of peripheral terminals.

[0066] Example 2:

[0067] Figure 7 This is a schematic diagram of the medical device provided in Example 2 of the present utility model.

[0068] Reference Figure 7 The medical device includes the above-mentioned implantable medical device 13 , and also includes an external transmitter 14 and a terminal 15 ; the external transmitter 14 and the terminal 15 are both communicatively connected to the implantable medical device 13 .

[0069] Furthermore, the terminal 15 is configured with preset software; the preset software is used to generate identity information for the terminal 15 that complies with preset identity information rules.

[0070] The present invention provides a medical device that, by providing a matching module that supports mid-band matching, can simultaneously charge the implantable medical device using a matching external transmitter while also temporarily charging the implantable medical device using a terminal, thereby increasing the operating time of the implantable medical device and further enhancing the charging convenience of the implantable medical device. Furthermore, the implantable medical device is also provided with a dynamic tuning module that can adapt to various models of peripheral terminals.

[0071] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described systems and devices can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0072] In addition, in the description of the embodiments of the present invention, unless otherwise specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0073] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0074] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0075] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the above-described embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the above-described embodiments within the technical scope disclosed by the present invention, or replace some of the technical features therein with equivalents. Such modifications, changes, or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. An implantable medical device, characterized in that: include: A control module and a matching module and a charging module respectively connected to the control module; the matching module is connected to the charging module; the matching module includes an antenna, a shared matching circuit, and a first analog switch connected in sequence; the first analog switch and the shared matching circuit are respectively connected to the control module; the antenna is communicatively connected to an external transmitter of an external device and a terminal of the external device; The control module is configured to send a first enable signal to the first analog switch to enable the first analog switch; The shared matching circuit is used to determine whether the connection signal received by the antenna is in a preset frequency band; the preset frequency band includes a preset external transmitter frequency band and a preset terminal frequency band; If the connection signal is the terminal frequency band, sending a first disable signal to the first analog switch to put the first analog switch into a disabled state; The charging module is configured to receive the radio frequency field energy sent by the external transmitter when the antenna receives the connection signal and the first analog switch is in the enabled state; When the antenna receives the connection signal and the first analog switch is in a disabled state, the antenna receives radio frequency field energy sent by the terminal.

2. The implantable medical device according to claim 1, wherein: The matching module further includes an in vitro transmitter matching circuit; the in vitro transmitter matching circuit is connected to the charging module and the first analog switch respectively; The external transmitter matching circuit is used to connect to the external transmitter when the antenna receives the connection signal and the first analog switch is in the enabled state, so that the external transmitter charges the charging module.

3. The implantable medical device according to claim 1, wherein: The matching module further includes an NFC circuit; the NFC circuit is connected to the control module and the shared matching circuit respectively; The NFC circuit is configured to, when the antenna receives the connection signal and the first analog switch is in a disabled state, obtain identity information sent by the terminal, generate an interrupt signal according to the identity information, and send the interrupt signal to the control module; If the identity authentication success signal sent by the control module is received, the terminal is connected to enable the terminal to charge the charging module.

4. The implantable medical device according to claim 3, wherein: The NFC circuit includes a connected NFC chip, an NFC antenna and a register.

5. The implantable medical device according to claim 3, wherein: The charging module also includes a connected lithium battery charging management circuit and a lithium battery; the lithium battery charging management circuit is connected to the control module; The lithium battery charging management circuit is used to obtain the real-time power level of the lithium battery in real time; determine whether the real-time power level is lower than a preset charging threshold, or whether the real-time power level is equal to a preset stop charging threshold; If the real-time power level is lower than the charging threshold, sending a charging signal to the control module; If the real-time power level is equal to the charging stop threshold, a charging stop signal is sent to the control module.

6. The implantable medical device according to claim 5, wherein: The charging module includes a second analog switch; the second analog switch is connected to the control module and the lithium battery respectively; The control module is configured to, upon receiving the charging signal, send a second enable signal to the second analog switch to enable the second analog switch; and upon receiving the stop charging signal, send a second disable signal to the second analog switch to disable the second analog switch; The control module is further configured to determine whether the identity information in the interrupt signal complies with a preset identity information rule; if not, send the second disable signal to the second analog switch to disable the second analog switch.

7. The implantable medical device according to claim 1, wherein: The implantable medical device further comprises: a dynamic tuning module; the control module further comprises a resonant circuit; the dynamic tuning module is connected to the control module and the matching module respectively; The control module is used to detect the real-time resonant frequency of the resonant circuit in real time, determine whether the real-time resonance is within a preset threshold range of a preset operating frequency, and if not, generate a tuning signal according to a preset tuning rule and the real-time resonant frequency, and send the tuning signal to the dynamic tuning module so that the dynamic tuning module adjusts the real-time resonant frequency to within the preset threshold range of the preset operating frequency.

8. The implantable medical device according to claim 7, wherein: The dynamic tuning module includes a connected DAC and a varactor diode; the DAC is connected to the control module; and the varactor diode is connected to the matching module.

9. A medical device, characterized in that: The implantable medical device comprises the implantable medical device according to any one of claims 1 to 8, further comprising an in vitro transmitter and a terminal; the in vitro transmitter and the terminal are both communicatively connected to the implantable medical device.

10. The medical device according to claim 9, characterized in that The terminal is configured with preset software; the preset software is used to generate identity information that complies with preset identity information rules for the terminal.

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