Wearable medical apparatus

Abstract

The present invention provides a wearable medical apparatus, comprising a flexible circuit board, the flexible circuit board being disposed in a folded configuration. The flexible circuit board is provided with an antenna main body, and the antenna main body and a main circuit board of the flexible circuit board are disposed on two folded sides of the flexible circuit board, respectively, wherein the antenna main body is disposed directly above the main circuit board. The flexible circuit board is further provided with a wake-up module, and the wearable medical apparatus is woken up from a sleep state by means of the wake-up module, so that the wearable medical apparatus enters a working state. In the present invention, the antenna main body and the main circuit board are disposed on the same flexible circuit board, and the flexible circuit board is folded, so that the antenna radiation unit is disposed directly above the main circuit board, thereby reducing the volume of the circuit board and achieving a miniaturized design for the wearable medical apparatus.

Description

[0001] A wearable medical device

[0002] Technical Field

[0003] This invention relates to the field of communication technology, and in particular to a wearable medical device.

[0004] Background Technology

[0005] Wearable medical devices need to communicate with external devices, transmitting or receiving microwave signals, which requires an antenna component. In existing technologies related to antennas for wearable medical devices, the antenna is often separate from the signal source, attached or laser-engraved onto the device housing. This design requires spring pins, antenna springs, or coaxial cables to connect to the circuit board, resulting in a complex structure and cumbersome assembly. Alternatively, PCB-onboard antennas can be used, but this requires sufficient clearance on the PCB, hindering the miniaturization of wearable devices. Other designs use small ceramic antennas, which are more expensive.

[0006] Therefore, there is an urgent need for an antenna solution that is simple in structure, easy to assemble, low in cost, and can enable the miniaturization of wearable medical devices.

[0007] Summary of the Invention

[0008] This invention provides a wearable medical device that addresses the technical problems of traditional wearable medical devices, such as complex structural design, cumbersome assembly, the need for sufficient clearance, which hinders miniaturization and increases costs.

[0009] To solve the above-mentioned technical problems, the present invention adopts the following technical solution.

[0010] A wearable medical device includes a flexible circuit board, which is folded; an antenna body is disposed in the flexible circuit board, and the antenna body and the main circuit board of the flexible circuit board are respectively disposed on both sides of the folded flexible circuit board, wherein the antenna body is disposed directly above the main circuit board;

[0011] The flexible circuit board is also equipped with a wake-up module, which wakes the wearable medical device from its dormant state and puts it into working state.

[0012] Preferably, the antenna body includes a radiating element and a feeding structure; the radiating element forms an antenna reference ground plane in the vertical projection area on the main circuit board and / or in the main circuit board area adjacent to the vertical projection area; the radiating element is connected to a signal source through the feeding structure.

[0013] Preferably, the radiating element, the feeding structure, and the antenna reference ground plane together constitute a Monopo I e antenna;

[0014] The radiating unit is a metal conductor used to convert electrical signals into electromagnetic waves and radiate them, or to convert received electromagnetic waves into electrical signals.

[0015] The power supply structure includes a power supply line and a power supply point. One end of the radiating unit is connected to one end of the power supply line through the power supply point, and the other end of the radiating unit is suspended.

[0016] The other end of the feed line is connected to the signal source via a transmission line; the current of the signal source enters the radiation unit through the feed point, causing the radiation unit to radiate electromagnetic waves; here the signal source is the main control chip.

[0017] Preferably, the radiating element is a planar metal or a wire metal;

[0018] A short-circuit stub is also provided on the antenna body; the radiating element, the feeding structure, the antenna reference ground plane and the short-circuit stub together constitute a PI FA antenna; wherein, the short-circuit stub is connected to the antenna reference ground plane through a short-circuit point provided on the short-circuit stub.

[0019] Preferably, the flexible circuit board further includes an auxiliary circuit board; the radiating unit is disposed on the auxiliary circuit board of the flexible circuit board; after the flexible circuit board is folded, the auxiliary circuit board is located directly above the main circuit board; a battery, a main control chip, a control circuit, and sensor components are disposed on the main circuit board; the battery provides power to the main control chip, the control circuit, and the sensor components; the control circuit is connected to the sensor components and the main control chip respectively; the control circuit is responsible for transmitting, processing, and controlling electrical signals from the sensor components, and transmitting the processed electrical signals to the main control chip; the main control chip is the core component of the wearable medical device, used to realize the device's wireless connection, data transmission, device management, protocol stack processing, and power consumption management functions; after receiving the signal transmitted by the control circuit, the main control chip performs further processing and analysis. Preferably, a wake-up module is also provided on the flexible circuit board; the wake-up module is responsible for monitoring the trigger conditions and waking the wearable medical device from the dormant state when the conditions are met, so that it enters the working state.

[0020] Preferably, the wake-up module is an NFC wake-up module, a magnetic sensor wake-up module, a light sensor wake-up module, a capacitive sensor wake-up module, an electrochemical sensor wake-up module, or an accelerometer wake-up module.

[0021] Preferably, the main circuit board and the auxiliary circuit board are connected by a flexible connector to form a physical interconnect. The connection position of the main circuit board and the auxiliary circuit board at the outer frame is not specifically required. The flexible connector is strip-shaped and disposed on the flexible circuit board. One end of the flexible connector is connected to the main circuit board, and the other end of the flexible connector is connected to the auxiliary circuit board.

[0022] Preferably, the sensor assembly includes a sensor fixture and a sensor probe; the sensor probe includes, but is not limited to, sensors for lactate, acetylcholine, amylase, bilirubin, cholesterol, human chorionic gonadotropin, creatine kinase, creatine, DNA, fructosamine, glucose, glutamine, growth hormone, hematocrit, hemoglobin, hormones, ketones, lactate, oxygen, prostate-specific antigen, prothrombin, RNA, thyroid-stimulating hormone, and troponin; the sensor probe is used to acquire human biological parameters; the sensor fixture provides stable support and fixation for the sensor probe, ensuring that the sensor probe contacts the human skin surface or penetrates the human subcutaneous tissue at the correct position and angle, thereby accurately acquiring the required biological parameters; the sensor assembly converts the acquired human biological parameters into electrical signals and transmits the electrical signals to the control circuit.

[0023] Preferably, after the flexible circuit board is folded, the housing encloses the flexible circuit board, and the distance between the main circuit board and the auxiliary circuit board is 1.5mm~3mm, which is the antenna clearance height; the shell has a planar shape that is square, round, elliptical, teardrop-shaped, or triangular with rounded corners; the main circuit board has a shape that is square, round, elliptical, teardrop-shaped, annular, or triangular with rounded corners; the auxiliary circuit board has a shape that is square, round, elliptical, teardrop-shaped, annular, or triangular with rounded corners.

[0024] Preferably, a chip matching circuit is provided on the main circuit board near the main control chip; the chip matching circuit is used to adjust the output impedance of the communication signal of the main control chip; an antenna matching circuit is provided near the radiating unit and the feeding structure; the antenna matching circuit is used to adjust the input impedance of the antenna.

[0025] Compared with the prior art, the present invention has the following beneficial effects.

[0026] 1. The wearable medical device of the present invention employs a flexible circuit board (including a main circuit board and an auxiliary circuit board). This device is foldable, and by utilizing the foldable effect of the flexible circuit board, the size of the circuit board is reduced, thereby achieving a miniaturized design of the wearable medical device. The main circuit board and the auxiliary circuit board are folded and set in the upper and lower shells, and this integrated design reduces the complexity of manufacturing and assembly. At the same time, it can reduce the space occupied and meet the design requirements of miniaturization and lightweighting.

[0027] 2. The radiating element, feeding structure, and antenna reference ground plane of this invention together constitute the antenna of the wearable medical device. This design optimizes antenna performance and improves the efficiency and stability of information transmission and reception. Simultaneously, by optimizing material selection and structural design, the overall weight of the device is reduced, improving portability and comfort. The vertical projection area of ​​the radiating element on the main circuit board and / or the area of ​​the main circuit board adjacent to the vertical projection area form the antenna reference ground plane. This ground plane is integrated with the device's circuit board, and this integrated design helps save space.

[0028] 3. The main circuit board of this invention integrates a battery, a main control chip, a control circuit, and sensor components, forming a complete signal acquisition, processing, and control system. The control circuit is responsible for transmitting, processing, and controlling the electrical signals from the sensor components, and transmitting the processed signals to the main control chip for further analysis, ensuring signal accuracy and efficiency. The wake-up module monitors trigger conditions and wakes the wearable medical device from its dormant state when the conditions are met. This design helps reduce the device's energy consumption and extend battery life. In addition, the intelligent wake-up function enables the device to automatically enter the working state as needed, improving ease of use and intelligence.

[0029] 4. The radiating element of this invention features a short-circuit stub. The radiating element, feed structure, antenna reference ground plane, and short-circuit stub together constitute a PIFA antenna. This structure uses a planar radiating element as the radiator. After folding, the radiating element is parallel to the main circuit board. The projection area formed by the radiating element on the main circuit board serves as the antenna reference ground plane. The radiating element has two pins: an antenna feed terminal and a short-circuit stub, used for grounding and as a feed point, respectively. The feed terminal transmits radio frequency signals from the radio frequency circuit to the antenna, or transmits signals received by the antenna back to the radio frequency circuit. In antenna design, parameters such as the position, shape, and size of the feed point need to be carefully designed and optimized to ensure efficient signal transmission and good antenna performance. Grounding the short-circuit stub can reduce interference between the antenna and other electronic devices, improving the antenna's stability and performance. In the antenna structure, the short-circuit stub is connected to the antenna's ground plane through a short-circuit point, forming a closed circuit loop. The introduction of the short-circuit stub can change the antenna's impedance matching and radiation performance, thereby affecting parameters such as the antenna's resonant frequency and bandwidth. By adjusting parameters such as the length and position of the short-circuit stub, antenna performance can be optimized to better adapt to different application scenarios and operating conditions. The short-circuit stub is associated with the antenna reference ground plane, and the reactive component introduced by the stub itself can adjust the antenna's input impedance, change the effective electrical length of the antenna to redistribute the current on the radiating element, change the current path length, and lower the resonant point of the radiating element. This further reduces the physical size of the antenna, making the entire wearable medical device lighter.

[0030] The invention will now be further described with reference to the accompanying drawings.

[0031] Attached Figure Description

[0032] Figure 1 is a schematic diagram of the structure of the wearable medical device of the present invention.

[0033] Figure 2 shows the first embodiment of the flexible circuit board after unfolding in this invention.

[0034] Figure 3 shows a second embodiment of the flexible circuit board after unfolding in this invention.

[0035] Figure 4 shows the third embodiment of the flexible circuit board after unfolding in this invention.

[0036] Figure 5 is a schematic diagram of the structure of the flexible circuit board after it is folded in half according to the present invention.

[0037] Figure 6 shows the TF structure of the wearable medical device after disassembly when the wake-up module is an NFC wake-up module in this invention.

[0038] Figure 7 shows the disassembled structure of the wearable medical device when the wake-up module is a magnetic sensor wake-up module in this invention.

[0039] Figure 8 is a schematic diagram of the working principle of the PI FA antenna in this invention.

[0040] Figure 9 is the equivalent circuit diagram of the PI FA antenna in this invention, where jX and ZA are connected in parallel. jX simulates the capacitance effect between the metal radiating patch and the ground plane in the antenna structure, and ZA represents the input impedance of the antenna, simulating the radiation and loss characteristics of the antenna.

[0041] Figure 10 shows a first embodiment of the PIFA antenna in this invention.

[0042] Figure 11 shows a second embodiment of the PIFA antenna in this invention.

[0043] Figure 12 shows a third embodiment of the PIFA antenna in this invention.

[0044] Figure 13 is a diagram of the first embodiment of the Monopo I e antenna in this invention.

[0045] Figure 14 shows a second embodiment of the Monopo I e antenna in this invention.

[0046] Figure 15 shows a first embodiment of the flexible circuit board after folding in this invention.

[0047] Figure 16 shows a second embodiment of the flexible circuit board after folding in this invention.

[0048] Figure 17 shows a third embodiment of the flexible circuit board after folding in this invention.

[0049] Figure 18 shows an embodiment of the main control chip and antenna impedance matching in this invention.

[0050] Figure 19 shows the simulation diagram of the return loss of the Monopole antenna or PIFA antenna in this invention. Figure 20 shows the simulation diagram of the efficiency of the Monopole antenna or PIFA antenna in this invention.

[0051] Figure 21 shows a simulation diagram of the radiation direction of the Monopolole antenna or PIFA antenna in this invention, where Theta (0) and Phi (6) are two angular parameters used to describe the spatial radiation direction. Theta (6): defined as the angle between the positive Z-axis direction of the antenna coordinate system and the vector of the observation point, ranging from 0° to 180°. Phi (6): defined as the angle between the projection of the observation point on the XY plane and the positive X-axis direction, ranging from 0° to 360°.

[0052] Figure 22 is a schematic diagram of the communication connection between the wearable medical device and the terminal device in this invention.

[0053] Reference numerals: 11 — Upper shell, 12 — Lower shell, 13 — Flexible circuit board, 14 — Battery, 15 — Main control chip, 16 — Wake-up module, 17 — Auxiliary circuit board, 18 — Main circuit board, 19 — Flexible connector, 23 — Short-circuit stub, 24 — Feed structure, 25 — Radiation element, 26 — Antenna reference ground plane. Detailed implementation details.

[0054] As shown in Figure 1-21, this wearable medical device includes a flexible circuit board 13; the flexible circuit board 13 is folded; an antenna body is disposed within the flexible circuit board 13; the antenna body and the main circuit board of the flexible circuit board 13 are respectively disposed on both sides of the parallel structure formed after the flexible circuit board 13 is folded, wherein the antenna body is disposed directly above the main circuit board 18; the flexible circuit board 13 also has a wake-up module 16, which is responsible for monitoring trigger conditions and waking the wearable medical device from its dormant state when the conditions are met, so that it enters the working state. In use, the sensor probe of the wearable medical device is inserted into the user's subcutaneous tissue or attached to the user's skin surface; the sensor components in the wearable medical device also include a temperature sensor and other auxiliary test sensors disposed on the main circuit board; this invention reduces the volume of the circuit board and achieves a miniaturized design of the wearable medical device by placing the antenna body and the main circuit board on the same flexible circuit board and by folding the flexible circuit board so that the antenna radiation unit is placed directly above the main circuit board.

[0055] In this embodiment, the flexible circuit board 13 includes a main circuit board 18 and an auxiliary circuit board 17; the size and shape of the main circuit board 18 and the auxiliary circuit board 17 may be the same or different; the radiating unit is disposed on the auxiliary circuit board 17 of the flexible circuit board 13.

[0056] The main circuit board 18 and auxiliary circuit board 17 are folded together and housed within the upper shell 11 and lower shell 12, respectively, and are foldably connected. After the flexible circuit board 13 is folded, a gap remains between the main circuit board 18 and the auxiliary circuit board 17. A battery 14, a main control chip 15, a control circuit, and sensor components are mounted on the main circuit board 18. The battery 14 provides power to the main control chip 15, the control circuit, and the sensor components, providing a continuous and stable voltage output. The control circuit is connected to both the sensor components and the main control chip 15. The control circuit is responsible for transmitting, processing, and controlling electrical signals from the sensor components, and transmitting the processed electrical signals to the main control chip 15. Upon receiving the signals from the control circuit, the main control chip 15 performs further processing and analysis. In the medical monitoring equipment, the main control chip 15 is the core component of the communication system, enabling wireless connection, data transmission, device management, protocol stack processing, and power consumption management. The wearable medical device is telecommunication-connected to one or more data receiving devices; these data receiving devices include, but are not limited to, mobile phones, watches, PDM devices, or gateways; the wearable medical device transmits detection data to the receiving devices, allowing individuals to view health parameters and determine the next treatment step; the data receiving devices are telecommunication-connected to a network platform; the data receiving devices can further transmit data to the network platform, allowing medical personnel to monitor health parameters. A radiating unit 25 is provided on the auxiliary circuit board 17. After the flexible circuit board 13 is folded, the radiating unit 25 forms an antenna reference ground plane 26 in its vertical projection area on the main circuit board 18 and / or in the area of ​​the main circuit board 18 adjacent to the vertical projection area; the radiating unit 25 is connected to a signal source through a feeding structure 24, and the radiating unit 25, the feeding structure, and the antenna reference ground plane 26 together form the antenna of the wearable medical device for information transmission with terminal devices.

[0057] In this embodiment, the wearable medical device further includes a housing; the housing includes an upper housing 11 and a lower housing 12; after the flexible circuit board 13 is folded, the housing closes the flexible circuit board 13, and the distance between the main circuit board 18 and the auxiliary circuit board 17 is 1.5mm~3mm; the planar shape of the housing is square, circular, elliptical, teardrop-shaped, or a triangle with rounded corners; the shape of the main circuit board 18 is square, circular, elliptical, teardrop-shaped, annular, or a triangle with rounded corners; the shape of the auxiliary circuit board 17 is square, circular, elliptical, teardrop-shaped, annular, or a triangle with rounded corners.

[0058] In one embodiment, the radiating element 25, the feeding structure 24, and the antenna reference ground plane 26 together constitute a Monopo 1e antenna. The radiating element 25 is a metallic conductor with a length typically one-quarter wavelength of the signal. The feeding structure 24 includes a feed line and a feed point. One end of the radiating element 25 is connected to one end of the feed line via the feed point, and the other end of the radiating element 25 is suspended parallel to the antenna reference ground plane 26. The other end of the feed line is connected to a signal source via a transmission line. The current from the signal source enters the radiating element 25 through the feed point, causing the radiating element 25 to radiate electromagnetic waves. Here, the signal source is the main control chip 15.

[0059] In another embodiment, a short-circuit stub 23 is also provided on the radiating element 25. The radiating element 25, the feed structure 24, the antenna reference ground plane 26, and the short-circuit stub 23 together constitute a PIFA antenna. The short-circuit stub 23 is connected to the antenna reference ground plane 26 through a short-circuit point. This connection method helps to form a complete resonant system and enhances the antenna's radiation capability. In the PIFA antenna, the radiating element 25, the feed structure 24, the antenna reference ground plane 26, and the short-circuit stub 23 form a closed circuit loop. The short-circuit stub is usually made of a metal sheet similar to that of the radiating element 25. The location and connection method of the short-circuit point have an important impact on the antenna performance because it determines the electrical connection between the short-circuit stub and the antenna reference ground plane 26. The introduction of short-circuit stub 23 can change the impedance matching and radiation performance of the PIFA antenna, thereby affecting parameters such as the resonant frequency and bandwidth of the PIFA antenna. By adjusting parameters such as the length and position of short-circuit stub 23, the performance of the PIFA antenna can be optimized to better adapt it to different application scenarios and operating conditions. The equivalent length L of the radiating element 25 is a quarter wavelength at the dielectric resonant frequency. The length of the radiating element can be adjusted according to actual needs to tune the antenna to the target frequency band.

[0060] In this embodiment, the wake-up module 16 employs either an NFC wake-up module or a magnetic sensor wake-up module. As a passive NFC device, when an NFC-enabled terminal device approaches the device, the device's NFC antenna activates itself by receiving energy from the active device through magnetic field induction, then initiates the corresponding connection process. The device communicates with the terminal device via the antenna; the NFC detection distance is typically within 4 centimeters. Alternatively, in magnetic sensor wake-up, the magnetic sensor is an electronic switch that generates a high- or low-level voltage signal when it senses a change in magnetic field. The magnetic switch triggers a control signal, and the microcontroller sends a command to begin the device connection operation.

[0061] The NFC wake-up module includes an NFC antenna, an NFC controller, wake-up logic circuitry, and a low-power mode management module;

[0062] NFC antenna: Responsible for receiving and transmitting signals with external NFC devices, transmitting energy and data through electromagnetic fields.

[0063] NFC Controller: Handles NFC protocol and data transmission, controls the wake-up process, determines when to accept external signals, and initiates corresponding operations.

[0064] Wake-up logic circuit: When the NFC controller detects a signal from the NFC antenna, the wake-up logic is responsible for triggering the device's wake-up process, which typically involves switching the device from a low-power mode to a normal operating mode.

[0065] Low-Power Mode Management Module: When the device is in standby or sleep mode, the NFC controller is typically in low-power mode. A wake-up signal can trigger the controller to enter normal operating mode, thus responding to requests from external NFC devices. The magnetic sensor wake-up module consists of a magnetic sensor, digital output, and signal processing circuitry. Magnetic Sensor (Hall Sensor, etc.): Magnetic sensors control circuit switching by detecting changes in the external magnetic field, converting the changing magnetic field signal into a digital voltage signal output. Common types of magnetic sensor switches include Hall switches, magnetoresistive switches, and reed switches. Among them, Hall sensors measure magnetic field strength through the Hall effect and are widely used in wake-up applications. A magnetoresistive switch is a switching device based on the magnetoresistive effect. The magnetoresistive effect refers to the change in the resistance of a material with changes in the external magnetic field.

[0066] Digital output: The module typically provides digital signal outputs (such as high or low levels), which can be directly connected to other control systems, such as microcontrollers (MCUs).

[0067] Signal processing circuit: Used to process the analog signal output from the magnetic sensor and convert it into a reliable digital output signal. This circuit typically includes comparators, flip-flops, etc.

[0068] Of course, in other embodiments, the wake-up module 16 may also be a light-sensing wake-up module, a capacitive sensor wake-up module, an electrochemical sensor wake-up module, or an accelerometer wake-up module.

[0069] In this embodiment, the main circuit board 18 and the auxiliary circuit board 17 are connected by a flexible connector 19 to form a physical interconnect. The connection position of the flexible connector 19 between the main circuit board 18 and the auxiliary circuit board 17 is not specifically required. The flexible connector 19 is strip-shaped and disposed on the flexible circuit board. One end of the flexible connector 19 is connected to the main circuit board 18, and the other end is connected to the auxiliary circuit board 17. The flexible connector 19 is bent at the connection point between the main circuit board 18 and the auxiliary circuit board 17, forming the "neck" of the flexible circuit board 13. After being folded, the main circuit board 18 and the auxiliary circuit board 17 form an approximately parallel effect. The radiating unit 25 is bent at the flexible connector 19, and the bent portion adapts to the shape of the flexible connector 19.

[0070] In this embodiment, the sensor assembly includes a sensor fixture and a sensor probe. The sensor probe includes, but is not limited to, sensors for lactate, acetylcholine, amylase, bilirubin, cholesterol, human chorionic gonadotropin (hCG), creatine kinase, creatine, DNA, fructosamine, glucose, glutamine, growth hormone, hematocrit, hemoglobin, hormones, ketones, lactate, oxygen, prostate-specific antigen (PSA), prothrombin, RNA, thyroid-stimulating hormone (TSH), and troponin. The sensor probe is used to acquire human biological parameters. The sensor fixture provides stable support and fixation for the sensor probe, ensuring that the sensor probe contacts the human body at the correct position and angle, thereby accurately acquiring the required biological parameters. The sensor assembly converts the acquired human biological parameters into electrical signals and transmits these signals to the control circuit. The connection between the sensor assembly and the control circuit uses plug-in or soldering connections, depending on the type of sensor and the application scenario. During the connection process, it is necessary to ensure the accuracy and stability of the signal and avoid the influence of interference and noise. The connection between the control circuit and the main control chip 15 is typically made through traces on a free-form printed circuit board (FPC).

[0071] In this embodiment, a chip matching circuit is provided on the main circuit board 18 near the main control chip 15. The main control chip 15 is connected to the chip matching circuit through an RF signal port. The chip matching circuit is used to adjust the output impedance of the RF signal output by the main control chip 15 to match the impedance of subsequent circuits (such as antennas), thereby reducing signal reflection and loss. The chip matching circuit is a small circuit containing components such as inductors and capacitors, used to adjust the impedance of the RF signal output by the main control chip 15 to close to 50 ohms (or other standard values). An antenna matching circuit is provided near the radiating unit 25 and the feeding structure 24. The antenna matching circuit is connected to the antenna through a transmission line to ensure that the signal is transmitted to the antenna and radiated efficiently. The antenna matching circuit is used to adjust the input impedance of the antenna to ensure it matches the output impedance of the main control chip 15, optimizing signal transmission efficiency and minimizing reflected power, ensuring the signal can be effectively transmitted from the source to the antenna and radiated. The radio frequency signal output by the main control chip 15 is matched by the chip matching circuit to make its characteristic impedance close to 50 ohms at R0. The antenna matching circuit also adjusts the input impedance of the antenna described in this invention to close to 50 ohms at R0. The chip matching circuit transmits the radio frequency signal to the antenna matching circuit through a transmission line. In this wearable medical device, the antenna matching circuit may be an n-type or L-type circuit, and impedance matching is achieved by adjusting the values ​​of components such as inductors and capacitors. Good impedance matching can improve the radiation efficiency of the antenna, reduce reflection loss, and improve the overall performance of the system. The antenna matching circuit can be an n-type or L-type circuit. R0 is 0 ohms, or it can be directly replaced by a microstrip line. In this embodiment, the sensor fixture needs to consider durability, stability, and ease of cleaning and disinfection. It may include specialized clamps, brackets, or mounting plates to meet the specific needs of medical devices.

[0072] In this embodiment, the control circuit is used to control functions such as monitoring sensor data, processing data, and controlling the working status of the wearable medical device.

[0073] In the several embodiments provided by this invention, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of modules is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple modules or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or modules may be electrical, mechanical, or other forms.

[0074] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0075] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

Claims 1. A wearable medical device, characterized in that, Includes a flexible circuit board (13), which is folded. An antenna body is provided in the flexible circuit board (13). The antenna body and the main circuit board (18) of the flexible circuit board (13) are respectively provided on both sides formed after the flexible circuit board (13) is folded. The antenna body is located directly above the main circuit board (18). The flexible circuit board (13) is also provided with a wake-up module (16), which wakes up the wearable medical device from the dormant state and puts it into working state.

2. A wearable medical device according to claim 1, characterized in that, The antenna body includes a radiating element (25) and a feeding structure (24); The radiating element (25) forms an antenna reference ground plane (26) in the vertical projection area on the main circuit board (18) and / or in the area of ​​the main circuit board (18) adjacent to the vertical projection area; the radiating element (25) is connected to the signal source through the feeding structure (24).

3. The wearable medical device according to claim 2, characterized in that, The radiating element (25), the feeding structure (24), and the antenna reference ground plane (26) together constitute a Monopolole antenna; The radiating unit (25) is a metal conductor used to convert electrical signals into electromagnetic waves for radiation, or to convert received electromagnetic waves into electrical signals. The power supply structure (24) includes a power supply line and a power supply point. One end of the radiation unit (25) is connected to one end of the power supply line through the power supply point, and the other end of the radiation unit (25) is suspended. The other end of the power supply line is connected to the signal source through a transmission line. The current of the signal source enters the radiation unit (25) through the power supply point, causing the radiation unit (25) to radiate electromagnetic waves.

4. The wearable medical device according to claim 3, characterized in that, The radiating element (25) is a planar metal or a wire metal; A short-circuit stub (23) is also provided on the antenna body; the radiating element (25), the feeding structure (24), the antenna reference ground plane (26) and the short-circuit stub (23) together constitute a PI FA antenna; wherein, the short-circuit stub (23) is connected to the antenna reference ground plane (26) through a short-circuit point provided on the short-circuit stub (23).

5. The wearable medical device according to any one of claims 1-4, characterized in that, The flexible circuit board (13) also includes an auxiliary circuit board (17); the radiating unit is disposed on the auxiliary circuit board (17) of the flexible circuit board (13); After the flexible circuit board (13) is folded, the auxiliary circuit board (17) is located directly above the main circuit board (18); a battery (14), a main control chip (15), a control circuit, and a sensor assembly are provided on the main circuit board (18); the battery (14) provides power to the main control chip (15), the control circuit, and the sensor assembly; the control circuit is connected to the sensor assembly and the main control chip (15) respectively; the control circuit is responsible for transmitting, processing, and controlling the electrical signals from the sensor assembly, and transmitting the processed electrical signals to the main control chip (15); the main control chip is the core component of the wearable medical device, used to realize the device's wireless connection, data transmission, device management, protocol stack processing, and power consumption management functions; after receiving the signal transmitted by the control circuit, the main control chip (15) performs further processing and analysis.

6. The wearable medical device according to claim 1, characterized in that, The wake-up module (16) can be an NFC wake-up module, a magnetic sensor wake-up module, a light sensor wake-up module, a capacitive sensor wake-up module, an electrochemical sensor wake-up module, or an accelerometer wake-up module.

7. The wearable medical device according to claim 5, characterized in that, The main circuit board (18) and the auxiliary circuit board (17) are connected by a flexible connector (19); the flexible connector (19) is strip-shaped and is disposed on the flexible circuit board; one end of the flexible connector (19) is connected to the main circuit board (18), and the other end of the flexible connector (19) is connected to the auxiliary circuit board (17).

8. The wearable medical device according to claim 5, characterized in that, The sensor assembly includes a sensor fixture and a sensor probe; the sensor probe is used to acquire human biological parameters; the sensor fixture is used to provide stable support and fixation for the sensor probe, ensuring that the sensor probe contacts the human body at the correct position and angle, thereby accurately acquiring the required biological parameters; the sensor assembly converts the acquired human biological parameters into electrical signals and transmits the electrical signals to the control circuit.

9. The wearable medical device according to claim 5, characterized in that: After the flexible circuit board (13) is folded, the shell encloses the flexible circuit board (13), and the distance between the main circuit board (18) and the auxiliary circuit board (17) is 1.5mm~3mm. The distance between the main circuit board (18) and the auxiliary circuit board (17) is the antenna clearance height. The shell planar shape is square, round, elliptical, teardrop, or triangular with rounded corners. The shape of the main circuit board (18) is square, round, elliptical, teardrop, ring, or triangular with rounded corners. The shape of the auxiliary circuit board (17) is square, round, elliptical, teardrop, ring, or triangular with rounded corners. 10, the wearable medical device according to claim 5, characterized in that: A chip matching circuit is provided on the main circuit board (18) near the main control chip (15); the chip matching circuit is used to adjust the output impedance of the communication signal of the main control chip (15); an antenna matching circuit is provided near the radiating unit (25) and the feeding structure (24); the antenna matching circuit is used to adjust the input impedance of the antenna to ensure that it matches the output impedance of the main control chip.

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