Microwave head mount device for intracranial monitoring

Abstract

The utility model discloses a microwave headstock device for intracranial monitoring, its characterized in that, it includes cross -shaped elastic fixed bolster, conformal antenna array round probe, microwave processor and display terminal, and microwave processor and display terminal are provided with dynamic frequency band adjusting system, and a plurality of elastic support feet are provided on the cross -shaped fixed bolster, and the conformal antenna array round probe is set up on the elastic support foot, and the microwave processor and display terminal are connected with the conformal antenna array round probe, and the dynamic frequency band adjusting system selects the optimum frequency point according to the skull thickness self -adaptation, improves the monitoring precision, has solved the problem of low spatial resolution of single mode technique. The utility model precision is high, and the adjustment is convenient.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and more specifically to a microwave head frame device for intracranial monitoring. Background Technology

[0002] Existing intracranial monitoring technologies suffer from the following problems: 1. Invasive monitoring methods (such as ventricular puncture) are prone to infection and cannot be used long-term. 2. Single-modal non-invasive techniques (such as ultrasound ONSD) have low spatial resolution and cannot provide continuous monitoring. 3. Traditional microwave equipment is bulky and has rigid antennas that cannot conform to the curvature of the head, resulting in severe signal attenuation. The root cause of these problems is that existing technologies struggle to achieve non-invasive, long-term, and continuous intracranial monitoring while maintaining monitoring accuracy, particularly in ensuring a proper fit between the monitoring device and the human head, where technical bottlenecks exist. Summary of the Invention

[0003] The purpose of this invention is to provide a stable, reliable, high-precision, and easily adjustable microwave head frame device for intracranial monitoring, in order to overcome the shortcomings of existing technologies.

[0004] This utility model achieves the above-mentioned objectives using the following technical solution: a microwave headframe device for intracranial monitoring, characterized in that it includes a cross-shaped elastic fixing bracket, a conformal antenna array circular probe, a microwave processor, and a display terminal. The microwave processor and display terminal are equipped with a dynamic frequency band adjustment system. The cross-shaped fixing bracket is provided with multiple elastic support feet. The conformal antenna array circular probe is mounted on the elastic support feet. The microwave processor and display terminal are connected to the conformal antenna array circular probe. The dynamic frequency band adjustment system adaptively selects the optimal frequency point according to the skull thickness, thereby improving monitoring accuracy and solving the problem of low spatial resolution in single-mode technology.

[0005] As a further explanation of the above scheme, the cross-shaped elastic fixing bracket uses T800 grade carbon fiber braided tubing as the elastic bracket foot, the elastic bracket foot is a telescopic structure, and the conformal antenna array circular probe is a three-point dynamic pressure sensing module.

[0006] Furthermore, the cross-shaped elastic fixation bracket adopts a cross-shaped antenna layout in the front, back, left and right directions to achieve signal acquisition without blind spots in the frontal lobe, parietal lobe, temporal lobe and cerebellum regions. The three-dimensional spatial electromagnetic beamforming technology can dynamically track the brain activity trajectory, improving the brain region coverage completeness by 87% compared with traditional single-point monitoring equipment.

[0007] Furthermore, the conformal antenna array circular probe uses a 1-4GHz frequency band microwave antenna. The overall diameter of the conformal antenna array circular probe is 5 cm. It consists of an antibacterial fabric outer layer, a flexible circuit board middle layer, a hydrogel coupling inner layer, and a modular interface. The outer antibacterial fabric layer effectively prevents sweat corrosion, the middle flexible circuit board layer integrates a printed antenna array, the inner hydrogel coupling layer significantly improves signal transmission efficiency, and the modular interface enables a reliable connection between the microwave processor and the display terminal. This improves the fit to the scalp and signal transmission efficiency, overcoming the signal attenuation problem caused by the rigidity of traditional antennas.

[0008] Furthermore, the modular interface includes a magnetic four-channel RF connector, a data bus supporting dual protocols, a hot-swap identification chip, and a self-test diagnostic module. The four-channel RF connector magnetically engages (IP67 protection), triggers the hot-swap identification chip (ESD 8kV protection); data is transmitted via USB3.0+SPI protocol, and the VSWR self-test module monitors abnormal standing wave ratios in real time.

[0009] Furthermore, the conformal antenna array adopts a microstrip patch antenna in a ring layout with a λ / 4 spacing. The conformal antenna array is equipped with a PI film substrate adaptive bending bonding cross-shaped elastic fixing bracket; the hydrogel coupling inner layer is electrically activated to ensure impedance matching at the antenna-tissue interface.

[0010] Furthermore, the outer layer of the antibacterial fabric is a silver fiber fabric layer, and the moisture permeability (≥800g / m² / 24h) and antibacterial rate (>99%) are monitored in real time.

[0011] The beneficial effects that this utility model can achieve by adopting the above-mentioned technical solution are:

[0012] This invention employs a highly elastic carbon fiber support to provide an adjustable fixation structure, ensuring a close fit between the probe and the head, thus solving the problem of poor fit in traditional rigid devices. The flexible conformal antenna array probe adopts a multi-layer structure design, improving the fit with the scalp and signal transmission efficiency, overcoming the signal attenuation problem caused by the rigidity of traditional antennas. The dynamic frequency band adjustment system adaptively selects the optimal frequency point based on the skull thickness, improving monitoring accuracy and solving the problem of low spatial resolution in single-mode technology. The modular interface design ensures the stability and reliability of the system, supporting long-term continuous monitoring and overcoming the shortcomings of invasive monitoring that cannot be used for extended periods. These technical features work together to achieve high-precision, wearable, and adjustable non-invasive intracranial monitoring. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of a circular probe structure for a conformal antenna array.

[0015] Explanation of reference numerals in the attached drawings: 1. Cross-shaped elastic fixing bracket 1-1. Elastic bracket foot 2. Conformal antenna array circular probe 2-1. Antibacterial fabric outer layer 2-2. Flexible circuit board middle layer 2-3. Hydrogel coupling inner layer 2-4. Modular interface 3. Microwave processor and display terminal. Detailed Implementation

[0016] In the description of this utility model, it should be noted that the directional terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.

[0017] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature, and in this description of the utility model, "at least" means one or more, unless otherwise explicitly specified.

[0018] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection; they can refer to a direct connection or a connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0019] In this utility model, unless otherwise specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "below," and "over" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Above," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0020] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings, making the technical solution and beneficial effects of this utility model clearer and more explicit. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0021] like Figures 1-2 As shown, this utility model is a microwave head frame device for intracranial monitoring, including a cross-shaped elastic fixation bracket 1, a conformal antenna array circular probe 2, a microwave processor and a display terminal 3. The microwave processor and display terminal 3 are equipped with a dynamic frequency band adjustment system. The cross-shaped fixation bracket 1 is provided with multiple elastic support feet 1-1. The conformal antenna array circular probe 2 is mounted on the elastic support feet 1-1. The microwave processor and display terminal 3 are connected to the conformal antenna array circular probe 2. The dynamic frequency band adjustment system adaptively selects the optimal frequency point according to the skull thickness, which improves the monitoring accuracy and solves the problem of low spatial resolution of single-mode technology.

[0022] Cross-shaped Flexible Fixation Bracket 1: The cross-shaped flexible fixation bracket 1 uses T800 grade carbon fiber braided tubing as the flexible support legs. The flexible support legs are telescopic structures, and the conformal antenna array circular probes are three-point dynamic pressure sensing modules. The cross-shaped flexible fixation bracket is equipped with four conformal antenna array circular probes that flexibly conform to the scalp. It employs a front-to-back, left-to-right cross-shaped antenna layout to achieve comprehensive signal acquisition across the frontal, parietal, temporal, and cerebellar regions. Three-dimensional spatial electromagnetic beamforming technology can dynamically track brain activity trajectories, improving brain region coverage completeness by 87% compared to traditional single-point monitoring equipment. For example, when abnormal activity is detected in a certain brain region, the system can automatically adjust the direction and shape of the electromagnetic beam to focus on that area for more precise monitoring without affecting the monitoring quality of other brain regions. This dynamic tracking capability allows the system to monitor the activity of multiple brain regions simultaneously, greatly improving the comprehensiveness and accuracy of monitoring.

[0023] Conformal Antenna Array Circular Probe: Employs a 1-4GHz microwave antenna embedded in an elastic headgear substrate. The conformal antenna array circular probe 2 consists of an antibacterial fabric outer layer 2-1, a flexible circuit board intermediate layer 2-2, a hydrogel coupling inner layer 2-3, and a modular interface 2-4. The antibacterial fabric outer layer 2-1 uses antibacterial silver fiber fabric as the outermost layer of the probe, directly contacting the skin. During long-term (e.g., 24 hours) continuous monitoring, even if the patient sweats, this fabric layer can effectively inhibit bacterial growth and quickly expel sweat, keeping the skin dry and preventing skin problems caused by a humid environment. The hydrogel coupling layer, as the inner layer of the probe, improves the transmission efficiency of microwave signals, reduces signal loss caused by the air interface, enhances the fit between the probe and the scalp, and improves the stability and accuracy of monitoring; it also has a certain buffering effect, improving wearing comfort. Parameters of the hydrogel coupling inner layer 2-3: thickness 3±0.2mm, conductivity 5S / m. This hydrogel layer is in direct contact with the scalp, and its high conductivity and appropriate thickness can effectively reduce microwave signal loss in the air. For example, when the patient moves their head, the hydrogel layer can deform accordingly, maintaining close contact with the scalp and ensuring the stability of signal quality.

[0024] A dynamically frequency-adjustable microwave transmission system includes a frequency adaptive algorithm, a dual-band switching module, skull thickness detection, and power adaptive control. 1. It adaptively selects the optimal frequency based on the skull thickness of different locations, improving monitoring accuracy. When monitoring the temporal region, the system automatically selects the 2.45GHz band because the temporal skull is thinner, allowing high-frequency signals to penetrate better; while when monitoring the frontal region, the system switches to the 1.5GHz band to accommodate the thicker frontal bone. 2. It achieves rapid frequency adjustment with a response time of less than 50ms, ensuring effective real-time monitoring. 3. Through power adaptive control, it minimizes the impact on the human body while ensuring signal quality.

[0025] Modular interfaces 2-4 include a magnetic four-channel RF connector (IP67 protection rating), a data bus supporting USB 3.0 + SPI dual protocols (5Gbps transmission rate), a hot-swap identification chip (8kV ESD protection rating), and a self-test diagnostic module. For example, in clinical use, medical personnel can quickly change probes or connect data processing equipment without worrying about electrostatic discharge damage during insertion or removal. Furthermore, even in humid environments, the IP67 protection rating ensures normal operation. This improves the system's waterproof performance, achieving an IP67 protection rating and enhancing its environmental adaptability; it supports high-speed data transmission at a rate of 5Gbps, meeting the data requirements of real-time monitoring; and it features hot-swap and ESD protection, improving system stability and security.

[0026] The following is a specific embodiment that details the system's workflow:

[0027] High-elasticity carbon fiber support system startup: The length of the cross-shaped elastic fixed support is adjusted (range 80-120mm) through a 5-level telescopic mechanism, and the three-point dynamic pressure sensing module (0.1-3N / cm²) is detected simultaneously.

[0028] Conformal antenna array deployment: 8-element microstrip patch antennas are arranged in a ring with a λ / 4 spacing, and the PI film substrate (0.1mm thick) is adaptively bent to fit the support. The hydrogel layer (3±0.2mm) is electrically activated with a conductivity of 5S / m to ensure impedance matching at the antenna-tissue interface.

[0029] Microwave dynamic tuning system operation: Time-domain reflectometer measures skull thickness (resolution ±0.5mm), and the data is input to an adaptive frequency algorithm. The optimal frequency band (1.5GHz±100MHz or 2.45GHz±500MHz) is matched in real time according to S11 parameters, with a response time <50ms. The transmit power is dynamically adjusted (10-500mW, in 1dB steps) to match skull thickness and tissue dielectric properties.

[0030] 4. Modular interface interaction: Four-channel RF connector magnetic docking (IP67 protection), trigger hot-plug identification chip (ESD 8kV protection). USB3.0+SPI protocol data transmission (5Gbps rate), VSWR self-test module for real-time monitoring of abnormal standing wave ratio.

[0031] 5. System Closed-Loop Control: Pressure sensor data → Adjustment of stent extension / angle → Antenna impedance rematching → Microwave power adaptive control. If VSWR > 2.0 or transmission is interrupted, an emergency stop is triggered and the self-test protocol is restarted. Through this series of steps, the system achieves stable operation, outputting microwave energy and physiological parameters to the host computer, thereby completing high-precision, non-invasive, and long-term intracranial monitoring.

[0032] Compared with existing technologies, this invention achieves comprehensive signal acquisition across the frontal, parietal, temporal, and cerebellar lobes through a cross-shaped antenna layout. Three-dimensional electromagnetic beamforming technology dynamically tracks brain activity, improving brain region coverage by 87% compared to traditional single-point monitoring devices. High signal-to-noise ratio: Utilizing a 4×4 MIMO architecture, multipath reflection signals are separated using a space-time coding algorithm. Combined with adaptive beamforming technology, the signal-to-noise ratio can be increased to over 35dB in complex environments, effectively eliminating bioelectrical interference such as muscle tremors. Comfortable and portable: Based on flexible printed circuits and aerogel composite materials, it achieves an ultra-lightweight 189g body. Combined with a biomimetic earphone-style structure and multi-point pressure dispersion design, along with a medical-grade silicone contact surface, it ensures scalp pressure ≤2.3kPa during continuous monitoring, meeting ergonomic standards.

[0033] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present utility model, and these all fall within the protection scope of the present utility model.

Claims

1. A microwave headrest device for intracranial monitoring, characterized in that, It includes a cross-shaped flexible fixing bracket, a conformal antenna array circular probe, a microwave processor and a display terminal. The microwave processor and display terminal are equipped with a dynamic frequency band adjustment system. The cross-shaped fixing bracket is equipped with multiple flexible support feet. The conformal antenna array circular probe is mounted on the flexible support feet. The microwave processor and display terminal are connected to the conformal antenna array circular probe.

2. The microwave headrest device for intracranial monitoring according to claim 1, characterized in that, The cross-shaped flexible fixing bracket uses T800 grade carbon fiber braided tubing as the flexible support feet. The flexible support feet are telescopic structures, and the conformal antenna array circular probe is a three-point dynamic pressure sensing module.

3. The microwave headrest device for intracranial monitoring according to claim 1, characterized in that, The cross-shaped elastic fixation brace adopts a cross-shaped antenna layout in the front, back, left and right directions to achieve signal acquisition without blind spots in the frontal lobe, parietal lobe, temporal lobe and cerebellum regions, and dynamically tracks brain activity trajectory through three-dimensional spatial electromagnetic wave beams.

4. A microwave headrest device for intracranial monitoring according to claim 1, characterized in that, The conformal antenna array circular probe uses a microwave antenna in the 1-4GHz frequency band. The conformal antenna array circular probe consists of an antibacterial fabric outer layer, a flexible circuit board middle layer, a hydrogel coupling inner layer, and a modular interface.

5. A microwave headrest device for intracranial monitoring according to claim 4, characterized in that, The modular interface includes a magnetic four-channel RF connector, a data bus supporting dual protocols, a hot-swap identification chip, and a self-test diagnostic module; the four-channel RF connector magnetically connects and triggers the hot-swap identification chip; data is transmitted via USB3.0+SPI protocol, and the VSWR self-test module monitors abnormal standing wave ratios in real time.

6. A microwave headrest device for intracranial monitoring according to claim 4, characterized in that, The conformal antenna array uses microstrip patch antennas arranged in a ring with a λ / 4 spacing. The conformal antenna array is equipped with a PI film substrate that adaptively bends and fits into a cross-shaped elastic fixing bracket. The hydrogel coupling inner layer is electrically activated to ensure impedance matching at the antenna-tissue interface.

7. A microwave headrest device for intracranial monitoring according to claim 4, characterized in that, The outer layer of the antibacterial fabric is a silver fiber fabric layer.

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