Magnetic compatible vr eyewear for magnetic resonance examination integrated with bone conduction earphone

Abstract

The application relates to the technical field of magnetic resonance examination auxiliary equipment, and discloses a magnetic compatibility VR eyeshade and bone conduction earphone integrated device for magnetic resonance examination, which comprises a head-mounted main frame made of a non-ferromagnetic material and used in an MRI magnetic field environment; an integrated connection structure arranged on the head-mounted main frame; and a VR eyeshade assembly installed at the front end of the head-mounted main frame through the integrated connection structure and comprising a light shield body and a lens barrel installed in the light shield body. The application adopts a full non-ferromagnetic material and can be safely used in a 1.5T / 3.0T magnetic field without the need of modifying a machine room, is low in cost and easy to popularize, effectively alleviates claustrophobia through visual, auditory and tactile triple soothing, improves the cooperation degree of children, reduces motion artifacts and the use of sedative drugs, guarantees a clear picture through multiple anti-fog designs, is comfortable and adjustable to wear, efficiently reduces noise through bone conduction, improves imaging quality through posture monitoring, is overall integrated, convenient and easy to use, and significantly improves examination efficiency and patient experience.

Description

Technical Field

[0001] This invention relates to the field of magnetic resonance imaging (MRI) examination auxiliary equipment technology, specifically an integrated device of magnetically compatible VR goggles and bone conduction headset for MRI examination. Background Technology

[0002] Magnetic resonance imaging (MRI) is an important tool for clinical imaging diagnosis. However, during the examination, patients are required to spend a long time in a narrow, enclosed magnetic channel, accompanied by high-intensity noise of 65–110 dB, which can easily induce claustrophobia. Studies have shown that approximately 10.4% of patients report a history of claustrophobia, and 14.5% of MRI examinations are terminated prematurely due to anxiety. The problem is particularly pronounced in pediatric MRI, with motion artifacts appearing in up to 29% of scans, 28% requiring sedation, and the failure rate of unassisted scanning in children under 5 years old reaching as high as 50%.

[0003] To alleviate the aforementioned problems, several auxiliary solutions exist in existing technologies. The Philips Ambient Experience system improves the examination environment through projection and lighting, but requires large-scale renovations to the MRI examination room, resulting in extremely high costs and hindering widespread adoption. The Khora Comfort XR system uses a consumer-grade VR headset to provide visual distraction, but it contains ferromagnetic components, making it unsuitable for direct use in the strong magnetic field of MRI. Traditional audio systems such as MRI audio only provide auditory distraction, lacking visual immersion, and pneumatic headphones suffer from sound quality loss and tracheal entanglement issues. Furthermore, there is currently no VR and bone conduction integrated auxiliary device that can be safely used in 1.5T / 3.0T MRI environments in China. Therefore, we propose an integrated device combining a magnetically compatible VR goggles and a bone conduction headset for MRI examinations to address the aforementioned problems. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides an integrated device combining a magnetically compatible VR goggles and a bone conduction headset for MRI examinations. This solves the problems of existing MRI examinations, such as the lack of safe magnetically compatible VR equipment in strong magnetic field environments, high examination noise, patients' claustrophobia, poor cooperation in children, motion artifacts, fogging of traditional VR devices, and discomfort when worn.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: an integrated device of magnetically compatible VR goggles and bone conduction headset for magnetic resonance imaging examination, comprising: a head-mounted main frame, made of non-ferromagnetic material, for use in an MRI magnetic field environment; An integrated connection structure is provided on the main frame of the headgear; The VR goggle assembly is installed on the front end of the head-mounted main frame through the integrated connection structure, including a light shield, a lens barrel installed in the light shield, an optical lens group set in the lens barrel, and a micro OLED display unit. The bone conduction headset assembly is installed on both sides of the headband main frame and includes elastic steel plates fixed on both sides of the light shield, a vibrator fixing seat set at one end of the elastic steel plates, and a piezoelectric bone conduction vibrator installed in the vibrator fixing seat. An adjustable pressure structure is connected to the bone conduction headset assembly to adjust the contact pressure between the piezoelectric bone conduction vibrator and the patient's head.

[0006] Preferably, the light shield is connected to the headband frame, a fixing plate is provided at the opening on one side of the light shield, a stop block that limits and abuts the fixing plate is fixedly installed on the inner wall of the light shield, the lens barrel is symmetrically arranged on the fixing plate, and a transparent heating film is provided at the end face of the optical lens group at the front end of the lens barrel.

[0007] Preferably, the optical lens group adopts a Fresnel lens or aspherical lens structure with a field of view of not less than 80 degrees and an equivalent viewing distance of 3-5 meters; the outer wall of the lens barrel is provided with threads to support diopter adjustment from -6D to +6D; a liquid silicone sealing ring is provided on one side of the light shield, the liquid silicone sealing ring is a double-lip structure, the outer lip is used for light shielding and sealing, and the inner lip forms an exhaust channel to prevent the lens from fogging; the micro OLED display unit is connected to external media devices through an HDMI fiber optic cable.

[0008] Preferably, one end of the elastic steel sheet is connected to the vibrator fixing seat via a ball joint to accommodate multi-angle adjustment. The piezoelectric bone conduction vibrator adopts a multi-layer piezoelectric ceramic sheet structure, contains no magnetic materials, and has a working frequency range of 200Hz-8kHz. The vibrator fixing seat is made of PEEK material.

[0009] Preferably, the adjustable pressure structure includes an adjusting screw rotatably mounted on the light shield near the elastic steel sheet, a drive disc threaded onto the adjusting screw, and a telescopic rod fixed between the drive disc and the light shield. The elasticity of the elastic steel sheet can be adjusted by the drive disc to control the contact pressure of the piezoelectric bone conduction vibrator on the patient's head to be 2-5N.

[0010] Preferably, the integrated connection structure includes a headband adjustment system, an angle-adjustable joint, and a quick-release interface; the headband adjustment system uses a combination of Velcro and PEEK buckles, with a head circumference adaptation range of 48-62cm; the angle-adjustable joint uses a multi-tooth ratchet structure made of PEEK material for adjusting the tilt angle of the VR headset component; the quick-release interface uses a non-magnetic plastic connector; the angle-adjustable joint has an adjustment step of 5 degrees, an adjustment range of 0 to 30 degrees of downward tilt, and is equipped with a press-lock button to fix the adjusted angle; the rear of the headband adjustment system is provided with a liquid silicone pillow pad to distribute pillow pressure during wear.

[0011] Preferably, the inner side of the headgear frame is fitted with a medical-grade liquid silicone cushioning pad with a Shore hardness of 40A-50A and a thickness of 3-5mm.

[0012] Preferably, the device also includes a pump body installed inside the light shield. The output end of the pump body is connected to a housing via a tube. An airflow tube is fixedly connected to the other side of the housing. A graphene heating temperature control rod is installed inside the housing. A cavity is formed inside the fixing plate. One end of the airflow tube is connected to the cavity of the fixing plate. Air holes are formed in multiple areas on one side of the fixing plate. A temperature sensor is also installed on the fixing plate. A posture sensor is also fixedly installed on the light shield for detecting the patient's head posture.

[0013] Preferably, the attitude sensor is a three-axis accelerometer or a six-axis inertial measurement unit, used to detect the pitch, yaw or tilt angle of the patient's head.

[0014] Preferably, the display screen of the micro OLED display unit is provided with a movable red dot guide marker. The red dot guide marker can move on the display screen according to a preset trajectory and can be superimposed on the VR scene image or displayed independently. When wearing it, the patient concentrates by looking at the guide marker to help maintain head posture stability during the MRI examination. Beneficial effects

[0015] This invention provides an integrated device combining a magnetically compatible VR goggles and a bone conduction headset for magnetic resonance imaging (MRI) examinations. Compared with existing technologies, it offers the following advantages: This magnetically compatible VR headset and bone conduction headset for MRI examination is an integrated device. The main frame of the headpiece is made of non-ferromagnetic material and can be safely used in 1.5T / 3.0T magnetic fields. It solves the problem of magnetic incompatibility of consumer-grade VR. It does not require the modification of the computer room, is low in cost and easy to promote, and fills the gap of similar products in China. By utilizing VR goggles, piezoelectric bone conduction oscillators and pumps, and graphene heating temperature control rods, the system provides triple soothing through vision, hearing, and touch, significantly alleviating claustrophobia and reducing the termination rate of examinations. For children, the air vents deliver warm airflow to gently soothe the skin, and combined with VR visuals and audio, greatly improving cooperation, reducing motion artifacts, and decreasing the need for sedatives. A liquid silicone sealing ring, a transparent heating film, and temperature-controlled airflow create multiple anti-fog features to prevent lens fogging and ensure clear images from the micro-OLED display unit. The lens barrel supports -6D to +6D diopter adjustment, the integrated connection structure is compatible with head circumferences of 48–62cm, and the adjustable pressure structure stabilizes the contact pressure at 2–5N for comfortable and painless wear. The piezoelectric bone conduction vibrator transmits sound through the skull, effectively shielding against high noise levels in MRI and eliminating tracheal entanglement. Posture sensors and on-screen guide markers monitor and guide head stability in real time, improving image quality. The integrated, quick-release device is compatible with various MRI machines, significantly improving examination efficiency and patient experience. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial schematic diagram of the adjustable pressure structure of the present invention; Figure 3 This is a partial cross-sectional view of the structure of the light-shielding cover of the present invention; Figure 4 This is a schematic diagram of the structure of the connecting parts such as the vent and temperature sensor of the present invention; Figure 5 This is a structural breakdown diagram of the entire invention.

[0017] In the diagram: 1. Headset main frame; 102. Pump body; 103. Airflow tube; 104. Box body; 105. Graphene heating temperature control rod; 106. Air vent; 107. Temperature sensor; 108. Posture sensor; 109. Integrated connection structure; 2. VR goggle assembly; 201. Light shield; 202. Fixing plate; 203. Liquid silicone sealing ring; 204. Lens tube; 205. Optical lens group; 206. Transparent heating film; 207. Stop block; 208. Miniature OLED display unit; 3. Bone conduction headset assembly; 301. Elastic steel sheet; 302. Ball joint; 303. Vibrator fixing seat; 304. Piezoelectric bone conduction vibrator; 4. Adjustable pressure structure; 401. Adjusting screw; 402. Drive plate; 403. Telescopic rod. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figure 1-5 As shown: A magnetically compatible VR headset and bone conduction headset integrated device for MRI examination, comprising: The main headgear frame 101 is made of non-ferromagnetic material and is used in MRI magnetic field environment. The inner side of the main headgear frame 101 is attached with a medical-grade liquid silicone cushioning VR eye mask component 2, which has a Shore hardness of 40A-50A and a thickness of 3-5mm. An integrated connection structure 109 is mounted on the head-mounted main frame 101. The integrated connection structure 109 includes a headband adjustment system, an angle-adjustable joint, and a quick-release interface. The headband adjustment system uses a combination of Velcro and PEEK buckles, with a head circumference range of 48-62cm. The angle-adjustable joint uses a multi-tooth ratchet structure made of PEEK material to adjust the pitch angle of the VR eye mask component 2. The quick-release interface uses a non-magnetic plastic connector. The adjustable joint has an adjustment step of 5 degrees, an adjustment range of 0 to 30 degrees of downward tilt, and is equipped with a press-lock button to fix the adjusted angle; The headband adjustment system has a liquid silicone pillow pad at the back to distribute the pressure on the pillow when wearing the headband. VR eye mask component 2 is installed on the front end of head-mounted main frame 101 via integrated connection structure 109, including light shield 201, lens barrel 204 installed in light shield 201, optical lens group 205 set in lens barrel 204, and micro OLED display unit 208. The light shield 201 is connected to the head-mounted main frame 101. A fixing plate 202 is provided at the opening on one side of the light shield 201. A stop block 207 that limits and abuts the fixing plate 202 is fixedly installed on the inner wall of the light shield 201. The lens barrel 204 is symmetrically arranged on the fixing plate 202. A transparent heating film 206 is provided at the end face of the optical lens group 205 at the front end of the lens barrel 204. The optical lens group 205 adopts Fresnel lens or aspherical lens structure, with a field of view of not less than 80 degrees and an equivalent viewing distance of 3-5 meters. The outer wall of the lens barrel 204 is provided with threads to support diopter adjustment from -6D to +6D. A liquid silicone sealing ring 203 is provided on one side of the light shield 201. The liquid silicone sealing ring 203 has a double-lip structure. The outer lip is used for light shielding and sealing, and the inner lip forms an exhaust channel to prevent the lens from fogging. The micro OLED display unit 208 is connected to external media devices through an HDMI fiber optic cable. The bone conduction headset component 3 is installed on both sides of the headband main frame 101. It includes elastic steel plates 301 fixed on both sides of the light shield 201, a vibrator fixing seat 303 set at one end of the elastic steel plate 301, and a piezoelectric bone conduction vibrator 304 installed in the vibrator fixing seat 303. One end of the elastic steel plate 301 is connected to the vibrator fixing seat 303 through a ball joint 302 to accommodate multi-angle adjustment. The piezoelectric bone conduction vibrator 304 adopts a multi-layer piezoelectric ceramic sheet structure, does not contain magnetic materials, and has a working frequency range of 200Hz-8kHz. The vibrator fixing seat 303 is made of PEEK material. The adjustable pressure structure 4 is connected to the bone conduction headset assembly 3 and is used to adjust the contact pressure between the piezoelectric bone conduction vibrator 304 and the patient's head. The adjustable pressure structure 4 includes an adjusting screw 401 that is rotatably installed on the light shield 201 near the elastic steel plate 301. A drive plate 402 is threaded onto the adjusting screw 401. A telescopic rod 403 is fixed between the drive plate 402 and the light shield 201. The elasticity of the elastic steel plate 301 can be adjusted by the drive plate 402 to control the contact pressure of the piezoelectric bone conduction vibrator 304 on the patient's head to be 2-5N.

[0020] In this implementation plan: The integrated magnetically compatible VR goggles and bone conduction headset for MRI examination is designed for a 1.5T / 3.0T strong magnetic field environment during use. It utilizes non-ferromagnetic and non-electromagnetic interference materials and structures throughout the process, making it safe for both adult and pediatric patients. The device uses a head-mounted main frame 101 for support, the VR goggles for visual input, the bone conduction headset for auditory noise reduction, temperature-controlled airflow for child comfort, posture sensing for scanning assurance, and pressure adjustment for wearing stability. The main headband frame 101 is made of non-ferromagnetic medical engineering plastic / PEEK material, containing no magnetic components such as iron, cobalt, or nickel, and can be used safely in strong magnetic fields. The integrated connection structure 109 features a built-in Velcro + PEEK buckle combination headband adjustment system, which allows for stepless adjustment of head circumference from 48 to 62 cm through stretching and buckle locking. Children can be tightened to the smallest size. The liquid silicone occipital pad at the back increases the contact area and disperses pressure, preventing occipital pressure pain, numbness, or displacement caused by prolonged wear. The VR eye mask assembly 2 can be tilted in 5° increments within a 0°–30° downward tilt range by using the PEEK multi-tooth ratchet angle-adjustable joint in the integrated connection structure 109. After adjustment, the angle is locked by pressing the locking button, ensuring that the light shield 201 is completely aligned with the patient's eyes, without shifting, tilting, or drooping. A double-lip liquid silicone sealing ring 203 is installed on the inner side of the light shield 201. The outer lip fits tightly against the skin of the eye socket to achieve full light blocking and prevent external light from interfering with VR viewing. A micro-ventilation channel is formed between the inner lip and the eye for subsequent airflow circulation and water vapor discharge, which structurally prevents the lens from fogging. The elastic steel plates 301 on both sides have their own elastic preload, which drives the vibrator fixing seat 303 through the ball joint 302 to achieve three-dimensional self-adaptation in up and down, forward and backward, and rotation, so that the piezoelectric bone conduction vibrator 304 automatically aligns with the skull sound transmission area. The vibrator fixing seat 303 is made of PEEK material, which is non-magnetic, high-strength, and does not interfere with the magnetic field; The adjustable pressure structure 4 drives the drive plate 402 to translate by rotating the adjustment screw 401, and with the guide limit of the telescopic rod 403, it pushes the elastic steel plate 301 to undergo slight deformation, precisely controlling the contact pressure between the piezoelectric bone conduction vibrator 304 and the head to be stable at 2-5N. For children, it can be adjusted to the low pressure range of 2-3N, which ensures stable sound transmission and avoids pressure pain. The quick-release interface completes the mechanical locking. The inner side of the main frame of the headband is made of medical-grade liquid silicone cushioning pads, Shore 40A-50A, with a thickness of 3-5mm, which fully fits the forehead, temples and cheeks, cushioning vibrations, improving comfort, and completing the stable wearing of the entire device. External media devices transmit video, animation, and immersive scene images via HDMI fiber optic cables. Fiber optic transmission is free of electromagnetic radiation and magnetic field interference, allowing for stable signal transmission even in strong magnetic field environments like those used in MRI, without affecting image quality. The micro-OLED display unit 208 receives the signal and outputs a high-brightness, high-contrast, low-power image. It has no magnetic backlight and no metal interference components, meeting magnetic compatibility requirements. The image is magnified and imaged by the optical lens group 205 within the lens barrel 204. The lenses employ Fresnel lenses or aspherical lens structures, with a field of view of no less than 80°. With an effective viewing distance of 3-5 meters, it creates an immersive large-screen visual experience for patients, completely isolating the closed environment of the MRI tunnel and eliminating claustrophobia. The outer wall of the lens barrel 204 is equipped with a precision adjustment thread, supporting -6D to +6D diopter adjustment. Myopic, hyperopic, and astigmatic patients, including children, do not need to wear external glasses and can directly see the VR screen, improving the ease of wearing. The front end of the lens barrel 204 and the end face of the optical lens group 205 are equipped with a transparent heating film 206, which can slightly heat the lens surface. Combined with temperature-controlled airflow, it forms a double anti-fog effect, ensuring that the lens does not fog up in any environment. The bone conduction headset component 3 uses a piezoelectric bone conduction vibrator 304 with a multi-layer piezoelectric ceramic sheet structure. It contains no magnetic materials and exhibits no attraction, deflection, heat generation, or interference in a 1.5T / 3.0T magnetic field, ensuring safety and stability. The vibrator operates in a frequency range of 200Hz–8kHz, covering the entire auditory frequency band, including human voice, music, and white noise. The audio signal drives the piezoelectric bone conduction vibrator 304 to generate micro-mechanical vibrations, which are transmitted directly to the auditory nerve in the inner ear through the skull, bypassing the external auditory canal and eardrum. This physically isolates the 65–110dB high-intensity pneumatic noise from MRI equipment, achieving immersive and clear sound. It can play children's songs, white noise, natural sound effects, and soothing voice messages. Combined with VR vision and warm airflow, it forms a triple soothing effect of sight, sound, and touch, significantly reducing children's anxiety, fear, and restlessness. The adjustable pressure structure 4 continuously maintains a contact pressure of 2–5N, ensuring that the vibrator always fits tightly against the head, preventing sound transmission interruption, noise, or sudden volume changes due to slight shaking.

[0021] Furthermore; In an optional embodiment, a pump body 102 is also included, which is installed inside the light shield 201. The output end of the pump body 102 is connected to a housing 104 via a tube. An airflow pipe 103 is fixedly connected to the other side of the housing 104. A graphene heating temperature control rod 105 is installed inside the housing 104. A cavity is opened inside the fixing plate 202. One end of the airflow pipe 103 is connected to the cavity of the fixing plate 202. Multiple air holes 106 are opened on one side of the fixing plate 202. A temperature sensor 107 is also installed on the fixing plate 202. An attitude sensor 108 is also fixedly installed on the light shield 201 for detecting the patient's head posture. The attitude sensor 108 is a three-axis accelerometer or a six-axis inertial measurement unit for detecting the pitch, yaw, or tilt angle of the patient's head.

[0022] In this embodiment: After wearing, the pump 102 inside the light shield 201 is activated, generating a stable, gentle, and low-speed airflow in a low-speed, low-noise, and non-magnetic drive mode. The airflow is transported to the inside of the housing 104 along a sealed pipeline, without leakage or turbulence. The graphene heating temperature control rod 105 inside the housing 104 is energized and operates, utilizing the rapid heating, high thermal efficiency, and uniform temperature characteristics of graphene to gently heat the passing airflow without producing open flames, electromagnetic radiation, or interfering with the MRI magnetic field. The heated constant-temperature airflow is sealed and transported through the airflow pipe 103, enters the internal cavity of the fixation plate 202, diffuses evenly, and then is gently and slowly blown out through the multi-area, small-diameter, and evenly distributed air holes 106 on the surface of the fixation plate 202 towards the skin around the eyes and face, forming a layer of warm airflow cover that directly acts on the child's skin. Through warm tactile stimulation, it achieves physiological soothing and quickly relieves tension, anxiety, crying, and restlessness. The warm airflow continuously surrounds the lens barrel 20. 4. The optical lens group 205, positioned around the eye socket, increases local temperature and reduces temperature differences, fundamentally inhibiting moisture condensation. Simultaneously, the exhaust channel within the double-lip sealing ring quickly removes moisture generated by the patient's breathing, preventing lens fogging and ensuring clear visibility of the VR image throughout. The temperature sensor 107 on the fixing plate 202 collects real-time data on the air outlet temperature 106 and the eye area temperature, feeding the electrical signal back to the control unit. The control unit automatically increases / decreases / turns off the graphene heating temperature control rod 105 based on a preset comfortable temperature, achieving constant temperature output, overheat protection, and safe temperature control. This ensures children wear the device warmly and comfortably without the risk of burns. A three-axis accelerometer or a six-axis inertial measurement unit attitude sensor 108 is installed on the light-shielding cover 201 to collect real-time data on the patient's head tilt, yaw, and lateral angles. When head displacement exceeds a threshold, an external alert device is activated to assist medical staff in monitoring and ensuring no motion artifacts in MRI scans.

[0023] Furthermore; In an optional embodiment, the display screen of the micro OLED display unit 208 is provided with movable guide markers. The red dot guide markers can move on the display screen according to a preset trajectory and can be superimposed on VR scene images or displayed independently. When wearing it, the patient concentrates by looking at the guide markers to help maintain head posture stability during MRI examinations.

[0024] In this embodiment, a movable red dot guide marker is superimposed on the screen of the micro OLED display unit 208. The marker moves slowly along a preset trajectory and can be superimposed on the VR scene or displayed independently. By guiding children to look at and track the red dot, their attention is forced to concentrate, and they are encouraged to keep their heads still, thus reducing head shaking.

[0025] Furthermore; In an optional embodiment, an elastic fastener is fixedly installed on the outside of the light shield 201 via a detachable bracket. The elastic fastener is an open-type elastic buckle structure and is made of non-magnetic medical silicone material. The elastic fastener can be adapted to clamp and fix an infant pacifier, so that the pacifier is suspended in front of the patient's mouth, forming an infant pacifier avoidance and limitation structure, which does not obstruct breathing through the mouth and nose, does not compress facial skin, and at the same time prevents the pacifier from falling off, shifting or touching the scanning area of ​​the device due to the baby crying and shaking.

[0026] In this embodiment: For the scenario of MRI examination of young infants, a detachable bracket and a non-magnetic elastic fastener are added to the outside of the light shield 201. The pacifier is firmly clamped by the self-clamping force of the open elastic buckle, without the need for hand support. The elastic fastener and bracket are made of non-ferromagnetic materials, which do not interfere with 1.5T / 3.0T MRI magnetic field imaging and have no problems with metal eddy currents and magnetic field deviation.

[0027] This solution uses 101 non-ferromagnetic material for the main frame of the head-mounted device, which can be safely used in magnetic fields of 1.5T / 3.0T, solving the problem of magnetic incompatibility for consumer-grade VR. It requires no server room renovation, is low-cost, easy to promote, and fills the gap in similar products in China.

[0028] The VR goggle assembly 2, piezoelectric bone conduction vibrator 304, pump 102, and graphene heating temperature control rod 105 provide triple soothing through vision, hearing, and touch, significantly alleviating claustrophobia and reducing the termination rate of examinations. For children, the vent 106 delivers warm airflow to gently soothe the skin, and combined with VR visuals and audio, greatly improves cooperation, reduces motion artifacts, and decreases the need for sedatives.

[0029] The liquid silicone sealing ring 203, the transparent heating film 206, and the temperature-controlled airflow form a multi-layered anti-fog system to prevent lens fogging and ensure clear images from the micro OLED display unit 208. The lens barrel 204 supports -6D to +6D diopter adjustment, the integrated connection structure 109 is suitable for head circumferences of 48–62cm, and the adjustable pressure structure 4 stabilizes the contact pressure at 2–5N, ensuring comfortable and painless wear.

[0030] The 304 piezoelectric bone conduction transducer transmits sound through the skull, effectively shielding against high noise levels in MRI and eliminating tracheal entanglement. The 108 posture sensor and on-screen guide markers monitor and guide head stability in real time, improving image quality. The integrated, quick-release device is compatible with various MRI machines, significantly improving examination efficiency and patient experience.

[0031] It should be noted that the control method of this invention is controlled by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Furthermore, since this invention is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

[0032] The control method of this invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the art. Furthermore, this invention is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail. At the same time, the contents not described in detail in this specification are all prior art known to those skilled in the art.

[0033] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An integrated device for magnetically compatible VR goggles and bone conduction headsets for magnetic resonance imaging (MRI) examinations, characterized in that: include: The main headgear frame (101) is made of non-ferromagnetic material and is intended for use in MRI magnetic field environments; An integrated connection structure (109) is disposed on the main frame of the headgear (101); VR eye mask assembly (2) is installed on the front end of head-mounted main frame (101) via the integrated connection structure (109), including a light shield (201), a lens barrel (204) installed in the light shield (201), an optical lens group (205) set in the lens barrel (204), and a micro OLED display unit (208). The bone conduction headset assembly (3) is installed on both sides of the headband main frame (101), including elastic steel plates (301) fixed on both sides of the light shield (201), a vibrator fixing seat (303) set at one end of the elastic steel plate (301), and a piezoelectric bone conduction vibrator (304) installed in the vibrator fixing seat (303). An adjustable pressure structure (4) is connected to the bone conduction headset assembly (3) for adjusting the contact pressure between the piezoelectric bone conduction vibrator (304) and the patient's head.

2. The integrated device of magnetically compatible VR goggles and bone conduction headset for magnetic resonance imaging examination according to claim 1, characterized in that: The light shield (201) is connected to the head-mounted main frame (101). A fixing plate (202) is provided at the opening on one side of the light shield (201). A stop block (207) that limits and abuts the fixing plate (202) is fixedly installed on the inner wall of the light shield (201). The lens barrel (204) is symmetrically arranged on the fixing plate (202). A transparent heating film (206) is provided at the end face of the optical lens group (205) at the front end of the lens barrel (204).

3. The integrated device of magnetically compatible VR goggles and bone conduction headset for magnetic resonance imaging examination according to claim 2, characterized in that: The optical lens group (205) adopts a Fresnel lens or aspherical lens structure with a field of view of not less than 80 degrees and an equivalent viewing distance of 3-5 meters; the outer wall of the lens barrel (204) is provided with threads to support diopter adjustment from -6D to +6D; a liquid silicone sealing ring (203) is provided on one side of the light shield (201), and the liquid silicone sealing ring (203) has a double-lip structure, with the outer lip used for light shielding and sealing, and the inner lip forming an exhaust channel to prevent the lens from fogging; the micro OLED display unit (208) is connected to an external media device through an HDMI fiber optic cable.

4. The integrated device of magnetically compatible VR goggles and bone conduction headset for magnetic resonance imaging examination according to claim 1, characterized in that: One end of the elastic steel sheet (301) is connected to the vibrator fixing seat (303) through the ball joint (302) to accommodate multi-angle adjustment. The piezoelectric bone conduction vibrator (304) adopts a multi-layer piezoelectric ceramic sheet structure, does not contain magnetic materials, and has a working frequency range of 200Hz-8kHz. The vibrator fixing seat (303) is made of PEEK material.

5. The integrated device of magnetically compatible VR goggles and bone conduction headset for magnetic resonance imaging examination according to claim 1, characterized in that: The adjustable pressure structure (4) includes an adjusting screw (401) rotatably mounted on the light shield (201) near the elastic steel sheet (301). A drive disc (402) is threaded onto the adjusting screw (401). A telescopic rod (403) is fixed between the drive disc (402) and the light shield (201). The elasticity of the elastic steel sheet (301) can be adjusted by the drive disc (402) to control the contact pressure of the piezoelectric bone conduction vibrator (304) on the patient's head to be 2-5N.

6. The integrated device of magnetically compatible VR goggles and bone conduction headset for magnetic resonance imaging examination according to claim 1, characterized in that: The integrated connection structure (109) includes a headband adjustment system, an angle-adjustable joint, and a quick-release interface; the headband adjustment system adopts a combination of Velcro and PEEK buckles, with a head circumference adaptation range of 48-62cm; the angle-adjustable joint adopts a multi-tooth ratchet structure made of PEEK material, used to adjust the pitch angle of the VR eye mask assembly (2); the quick-release interface adopts a non-magnetic plastic connector. The adjustable joint has an adjustment step of 5 degrees, an adjustment range of 0 to 30 degrees downward tilt, and is equipped with a press-lock button to fix the adjusted angle; The headband adjustment system has a liquid silicone pillow pad at the rear to distribute the pressure on the pillow when worn.

7. The integrated device of magnetically compatible VR goggles and bone conduction headset for magnetic resonance imaging examination according to claim 1, characterized in that: The inner side of the head-mounted main frame (101) is fitted with a medical-grade liquid silicone cushioning VR eye mask assembly (2), which has a Shore hardness of 40A-50A and a thickness of 3-5mm.

8. The integrated device of magnetically compatible VR goggles and bone conduction headset for magnetic resonance imaging examination according to claim 1, characterized in that: It also includes a pump (102) installed inside the light shield (201), the output end of the pump (102) is connected to a box (104) through a pipe, the other side of the box (104) is fixedly connected to an airflow pipe (103), a graphene heating temperature control rod (105) is installed inside the box (104), a cavity is opened inside the fixing plate (202), one end of the airflow pipe (103) is connected to the cavity of the fixing plate (202), multiple air holes (106) are opened on one side of the fixing plate (202), a temperature sensor (107) is also installed on the fixing plate (202), and a posture sensor (108) is also fixedly installed on the light shield (201) for detecting the patient's head posture.

9. The integrated device of magnetically compatible VR goggles and bone conduction headset for magnetic resonance imaging examination according to claim 8, characterized in that: The attitude sensor (108) is a three-axis accelerometer or a six-axis inertial measurement unit, used to detect the pitch, yaw or tilt angle of the patient's head.

10. The integrated device of magnetically compatible VR goggles and bone conduction headset for magnetic resonance imaging examination according to claim 1, characterized in that: The micro OLED display unit (208) has a movable red dot guide mark on its display screen. The red dot guide mark can move on the display screen according to a preset trajectory and can be superimposed on VR scene images or displayed independently. When wearing it, the patient can concentrate by looking at the guide mark to help maintain head posture stability during MRI examination.

Images