A child magnetic resonance examination noise reduction pacifying earphone

Abstract

The utility model relates to medical instrument technical field, especially disclose a kind of children magnetic resonance examination noise reduction pacification earphone, including head-mounted structure, control module and parent end equipment. Head-mounted structure includes headband and two symmetrical earphone housings, and the outside of earphone housing is the modeling of round cartoon animal, and the inside of earphone housing is sequentially provided with electromagnetic shield layer, piezoelectric ceramic loudspeaker, high-density sound insulation sponge layer from outside to inside. The utility model has the following advantages: the utility model is designed for threefold safety guarantee of MRI environment by adopting piezoelectric ceramic loudspeaker, electromagnetic shield layer and anti-winding shield cable, eliminates the risk of projection, burn and image interference;Active pacification through the physical noise reduction of high-density sound insulation sponge and pre-stored audio, Bluetooth play effectively relieves children's fear, uses wired two-way communication system, so that parents can provide real-time emotional support outside examination room, reduce children's unease, improve examination success rate.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a noise-canceling and soothing headphone for children undergoing magnetic resonance imaging (MRI) examinations. Background Technology

[0002] Magnetic resonance imaging (MRI) is an important imaging technique in modern medicine. However, MRI equipment generates continuous and loud noise during the scanning process, which can typically reach 105-120 decibels. This noise can easily cause fear, anxiety, and crying in children being examined, making it impossible for them to remain still. This can lead to motion artifacts and examination failure. To ensure a successful scan, repeated scans or the administration of sedatives beforehand are often necessary, increasing medical risks and time costs.

[0003] Currently, some general-purpose MRI-compatible headphones exist on the market, but they are primarily geared towards adults, have a monotonous design, and lack features designed to soothe children's anxieties. While some products offer audio input, there is a lack of a comprehensive system that allows parents or medical staff outside the examination room to communicate in real time with children inside. Furthermore, the magnetic materials and wireless signals of ordinary electronic products can interact with the strong magnetic fields and radio frequency pulses of MRI equipment, posing a risk of impact, burns, and interference with image quality; therefore, they are absolutely prohibited from being brought into the MRI scanning room.

[0004] Therefore, there is an urgent need for a dedicated device that can effectively reduce noise, soothe children's emotions, ensure absolute safety in the MRI environment, and enable two-way communication between parents and children. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide a noise-canceling and soothing headset for children undergoing MRI examinations. This headset can physically reduce MRI noise, soothe children's emotions through various methods, and enable safe and stable two-way communication between parents or medical staff and children via a wired connection.

[0006] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows: a noise-canceling and soothing headset for children undergoing magnetic resonance imaging (MRI) examination, comprising: a headband structure, the headband structure including a headband and two symmetrically arranged earphone shells, the headband being an adjustable and retractable structure to adapt to different children's head circumferences, the outer surface of the earphone shells being a rounded cartoon animal shape, the inner surface of the earphone shells being provided with an electromagnetic shielding layer, a piezoelectric ceramic speaker, and a high-density sound-insulating sponge layer from the outside to the inside, and a skin-friendly silicone pad on the inner side of the earphone shells where they contact the skin; a control module, the control module being built into one of the earphone shells, including a main control board and a storage unit, a Bluetooth module, and a built-in microphone electrically connected to the main control board; and a parent-end device, the parent-end device including a receiver installed outside the MRI examination room, the receiver being connected to the control module via an anti-tangling shielded cable, the receiver being provided with a parent microphone and a speaker for enabling stable two-way communication with the child inside the examination room.

[0007] Preferably, the electromagnetic shielding layer is a mesh or foil structure made of copper mesh or nickel-based amorphous alloy material, which is wrapped around the piezoelectric ceramic speaker and the control module.

[0008] Preferably, the anti-tangle shielded cable is a spiral cable or a cable made of high-resistance material, and its internal conductors are twisted pairs wrapped with a shielding layer.

[0009] Preferably, the storage unit pre-stores children's songs and story audio files, and the main control board controls the audio files to be played through the piezoelectric ceramic speaker.

[0010] Preferably, the Bluetooth module is used to pair and connect with the parent's mobile phone before the inspection, and play the customized audio content transmitted by the mobile phone through the piezoelectric ceramic speaker.

[0011] Preferably, the skin-friendly silicone pad has a detachable and washable structure.

[0012] Preferably, the noise reduction capability of the high-density sound-insulating sponge layer is not less than 35dB NRR.

[0013] Preferably, the stable communication distance for two-way calling is not less than 5 meters.

[0014] With the above structure, this utility model has the following advantages:

[0015] This invention employs a piezoelectric ceramic speaker, an electromagnetic shielding layer, and an anti-tangling shielded cable to create a triple safety guarantee specifically designed for the MRI environment, eliminating the risks of projectiles, burns, and image interference. Combined with physical noise reduction from high-density sound-absorbing foam and active soothing effects from pre-stored audio and Bluetooth playback, it effectively alleviates children's fear. The wired two-way communication system allows parents or medical staff to provide real-time emotional support outside the examination room, reducing children's anxiety and improving the success rate of the examination.

[0016] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

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

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a left view of the head-mounted structure of this utility model.

[0020] Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure of AA.

[0021] As shown in the figure: 1. Earphone shell; 2. Headband; 3. Skin-friendly silicone pad; 4. Receiver; 5. Electromagnetic shielding layer; 6. Sound-insulating sponge layer; 7. Piezoelectric ceramic speaker; 8. Main control board; 9. Storage unit; 10. Bluetooth module; 11. Built-in microphone. Detailed Implementation

[0022] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0023] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "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 refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0024] Combination Figures 1-3 As shown, a noise-canceling and soothing headset for children undergoing magnetic resonance imaging (MRI) examinations includes a headband structure, a control module, and a parent-side device.

[0025] The headband structure includes a headband 2 and two symmetrically arranged earphone shells 1. The headband 2 is an adjustable and retractable structure to accommodate different children's head circumferences. The earphone shells 1 have a rounded cartoon animal shape on the outside. The internal structure of the earphone shells 1, from the outside to the inside, includes an electromagnetic shielding layer 5, a piezoelectric ceramic speaker 7, and a high-density sound-insulating sponge layer 6. The inner side of the earphone shells 1 has a skin-friendly silicone pad 3 where it touches the skin. The control module is built into one of the earphone shells 1 and includes a main control board 8 and a storage unit 9, a Bluetooth module 10, and a built-in microphone 11 that are electrically connected to the main control board 8. The parent terminal device includes a receiver 4 installed outside the MRI examination room. The receiver 4 is connected to the control module through an anti-tangling shielded cable. The receiver 4 is equipped with a parent microphone and a speaker to enable stable two-way communication with the child in the examination room.

[0026] In one embodiment of this utility model, such as Figure 3 As shown, the electromagnetic shielding layer 5 is a mesh or foil structure made of copper mesh or nickel-based amorphous alloy material, which wraps around the piezoelectric ceramic speaker 7 and the control module. Specifically, this shielding layer forms a continuous cage structure, effectively isolating and absorbing the weak electromagnetic radiation generated by the internal electronic components and the strong external MRI radio frequency pulses. Preferably, copper mesh is widely used due to its excellent conductivity and flexibility. Its mesh density is precisely calculated to ensure sufficient shielding effectiveness in the target frequency band, i.e., the operating frequency band of the MRI equipment, ensuring that the headphones will not become a source of interference, thereby guaranteeing the signal-to-noise ratio and clarity of the MRI images.

[0027] In one embodiment of this invention, the anti-tangling shielded cable is a spiral cable or a cable made of high-resistivity material, with its internal conductors being twisted pairs wrapped with a shielding layer. Specifically, this cable undertakes the dual tasks of signal transmission and power supply. The spiral design extends the cable length when stretched and automatically retracts when relaxed, effectively avoiding tangling problems caused by messy placement in the MRI examination room. More importantly, the cable is made entirely or partially of a high-resistivity special alloy material such as nickel-chromium alloy. The purpose is to minimize the eddy currents induced in the cable by the MRI gradient magnetic field and radio frequency field, eliminating the risk of the cable overheating and burning the patient due to the eddy current effect. The internal shielded twisted pair further enhances the anti-interference capability of signal transmission, ensuring that the audio signal remains clear and stable in complex electromagnetic environments.

[0028] In one embodiment of this invention, the storage unit 9 is pre-stored with nursery rhymes and story audio files, and the main control board 8 controls the playback of the audio files through the piezoelectric ceramic speaker 7. Specifically, the storage unit 9 is an embedded flash memory chip, which has been pre-loaded with carefully selected and recorded soothing audio content such as nursery rhymes, fairy tales, and nature sounds before leaving the factory. During the examination, medical staff or parents can start playback using simple control buttons located on the earphone shell or cable. The aim is to distract children's attention by providing familiar and pleasant sound content, effectively covering the disturbing noise generated during MRI scans.

[0029] In one embodiment of this invention, the Bluetooth module 10 is used to pair and connect with the parent's mobile phone before the examination, and play customized audio content transmitted by the mobile phone through the piezoelectric ceramic speaker 7. Specifically, this function is only used before entering the MRI scanning room. In the waiting area, the parent can turn on the Bluetooth of their mobile phone, quickly pair it with the headset, and then play personalized audio that the child is most familiar with and relies on, such as stories told by the parents or the child's favorite songs. Once the child enters the scanning room for the examination, the Bluetooth connection will be disconnected or disabled to ensure absolute compliance with the safety management regulations of the MRI room.

[0030] In one embodiment of this utility model, the skin-friendly silicone pad 3 is a detachable and washable structure. Specifically, the silicone pad is connected to the main body of the earphone shell 1 by a snap-fit, and can be easily removed for thorough cleaning and disinfection. This design fully considers the hygiene requirements of medical devices, avoids the risk of infection that may be caused by cross-use by different children, and also ensures the comfort and breathability of the part in contact with the child's delicate skin.

[0031] In one embodiment of this invention, the high-density sound-absorbing sponge layer 6 has a noise reduction capability of no less than 35dB NRR. Specifically, the sponge layer uses slow-rebound memory foam or similar high-performance acoustic sound-absorbing materials. Its physical structure can effectively absorb and block high-frequency and mid-frequency sound wave energy, achieving an NRR (noise reduction rating) value of 35dB or higher. This can reduce external MRI scan noise, which can reach 110-120 dB, to a safe level of 75-85 dB, thereby providing passive protection for children's hearing. Combined with active audio soothing, it creates a relatively comfortable auditory environment.

[0032] In one embodiment of this utility model, the stable communication distance for the two-way calling function is no less than 5 meters. Specifically, the system uses an anti-tangling shielded cable to achieve wired transmission of analog or digital signals, with signal attenuation controlled to an extremely low level, ensuring clear and uninterrupted call sound within a distance of at least 5 meters. Parents or medical staff only need to press the call button on the receiver 4 in the control room to provide real-time comfort and guidance to the child through the parent microphone; the child does not need to perform any operation, and their voice can be directly collected by the built-in microphone 11 on the headset and transmitted back to the speaker on the parent's end, achieving natural and stable two-way communication.

[0033] A noise-canceling and soothing headphone for children undergoing magnetic resonance imaging examination, according to an embodiment of the present invention.

[0034] Before the examination begins, headphones are put on the child in the MRI scanning room, and the headband 2 is adjusted to a comfortable position. Customized audio from the parent's mobile phone can be played via Bluetooth. After the child lies on the examination bed, the Bluetooth function is turned off, and the built-in audio playback or wired call mode is switched. During the entire MRI scan, the high-density sound-insulating foam layer 6 first provides basic physical noise reduction. At the same time, the piezoelectric ceramic speaker 7 plays pre-stored soothing audio or real-time voice from the parent's device to actively soothe and guide the child. The built-in microphone 11 continuously collects the child's voice and transmits it to the operating room through an anti-tangling shielded cable so that the parent can hear the child's reaction. All electronic components, including the speaker, main control board 8, microphone, etc., are effectively wrapped by the electromagnetic shielding layer 5 to ensure that they do not generate electromagnetic interference with external MRI equipment and can work stably in a strong electromagnetic environment. Finally, through the synergistic effect of passive noise reduction, active soothing, safety shielding, and real-time interaction, the child is helped to overcome fear and remain still, thus ensuring the smooth progress of the MRI examination.

[0035] The present invention and its embodiments have been described above. This description is not restrictive, and the embodiments shown throughout the text are only one of the embodiments of the present invention. The actual structure is not limited to this. In conclusion, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit of the present invention, such design should fall within the protection scope of the present invention.

Claims

1. A noise-canceling and soothing headphone for children undergoing magnetic resonance imaging (MRI) examinations, characterized in that, include: The headband structure includes a headband and two symmetrically arranged earphone shells. The headband is an adjustable and retractable structure to accommodate different children's head circumferences. The outer part of the earphone shell has a rounded cartoon animal shape. The internal structure of the earphone shell, from the outside to the inside, includes an electromagnetic shielding layer, a piezoelectric ceramic speaker, and a high-density sound-insulating sponge layer. The inner side of the earphone shell where it contacts the skin is provided with a skin-friendly silicone pad. A control module, which is built into one side of the earphone shell, includes a main control board and a storage unit, a Bluetooth module, and a built-in microphone electrically connected to the main control board; The parent-side device includes a receiver installed outside the MRI examination room. The receiver is connected to the control module via an anti-tangle shielded cable. The receiver is equipped with a parent microphone and a speaker to enable stable two-way communication with the child inside the MRI examination room.

2. The noise-canceling and soothing headphones for children undergoing magnetic resonance imaging examinations according to claim 1, characterized in that: The electromagnetic shielding layer is a mesh or foil structure made of copper mesh or nickel-based amorphous alloy material, which is wrapped around the piezoelectric ceramic speaker and the control module.

3. The noise-canceling and soothing headphones for children undergoing magnetic resonance imaging examinations according to claim 1, characterized in that: The anti-tangle shielded cable is a spiral cable or a cable made of high-resistance material, and its internal conductors are twisted pairs wrapped with a shielding layer.

4. The noise-canceling and soothing headphones for children undergoing magnetic resonance imaging examinations according to claim 1, characterized in that: The storage unit contains pre-stored audio files of nursery rhymes and stories, and the main control board controls the audio files to be played through the piezoelectric ceramic speaker.

5. The noise-canceling and soothing headphones for children undergoing magnetic resonance imaging examinations according to claim 1, characterized in that: The Bluetooth module is used to pair and connect with the parent's mobile phone before the inspection, and play the customized audio content transmitted by the mobile phone through the piezoelectric ceramic speaker.

6. The noise-canceling and soothing headphones for children undergoing magnetic resonance imaging examinations according to claim 1, characterized in that: The skin-friendly silicone pad has a removable and washable structure.

7. The noise-canceling and soothing headphones for children undergoing magnetic resonance imaging examinations according to claim 1, characterized in that: The noise reduction capability of the high-density sound-insulating sponge layer is no less than 35dB NRR.

8. The noise-canceling and soothing headphones for children undergoing magnetic resonance imaging examinations according to claim 1, characterized in that: The stable communication distance for two-way calling is no less than 5 meters.

Images