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159 results about "External Auditory Canals" patented technology

External auditory canal noninvasive acoustic-electric combined stimulation tinnitus therapeutic apparatus

The invention relates to the technical field of tinnitus therapeutic apparatuses, and discloses an external auditory canal noninvasive acoustic-electric combined stimulation tinnitus therapeutic apparatus, which comprises an earmuff, the inner wall of the earmuff is fixedly connected with a power supply device, and the surface of the earmuff is provided with a wearable part; the wearable part comprises a fixing frame, the surface of the fixing frame is fixedly connected with the surfaces of earmuffs, protective pads are fixedly connected to the ends, away from the fixing frame, of the earmuffs, through holes are formed in the ends, close to the fixing frame, of the earmuffs, and a sliding plate is fixedly connected to the top of the fixing frame. The elastic piece is hung on the neck of a tinnitus patient so that the tinnitus patient can carry the earmuff, convenience is brought to the tinnitus patient during use, when the tinnitus patient needs to use the earmuff, the earmuff is placed on the ear of the tinnitus patient, the protective pad at the end of the earmuff can make contact with the face of the patient, and the wearing comfort of the tinnitus patient is improved; after the earmuff is placed on the ear of a tinnitus patient, the earmuff can be fixed to the ear of the tinnitus patient through the elasticity of the elastic piece, and the wearing stability of the tinnitus patient is improved.
Owner:SUN YAT SEN MEMORIAL HOSPITAL SUN YAT SEN UNIV

Earphone and acoustic control method

An earphone includes a housing having a space therein and having a path capable of ventilation from one end side on an external auditory canal side of a wearer to the other end side on an ambient environment side, a valve accommodated in the housing and configured to switch the path between an open state and a close state, a microphone disposed on one end side of the housing and configured to collect uttered voice of the wearer, and a control unit configured to control the open state and the close state. The control unit switches the path to the open state during a first operation in a call including an operation in which the uttered voice of the wearer is collected by the microphone, and switches the path either the open state or the close state during a second operation different from the first operation.
Owner:PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD

Experimental mouse temporal-mandibular joint cavity injection method and device based on ultrasonic guidance

The invention discloses a laboratory mouse temporomandibular joint cavity injection method and device based on ultrasonic guidance, and relates to the technical field of laboratory mouse experiments.The device comprises a supporting column, a first cantilever arranged on the supporting column, an external auditory canal positioning piece arranged on the first cantilever, and a second cantilever arranged on the first cantilever in a sliding mode, the second cantilever can rotate around the end, close to the first cantilever, of the second cantilever, and the second cantilever is used for being parallel to the orbital ear plane of the laboratory mouse; the carrying mechanism is arranged on the second cantilever in a sliding mode, and the carrying mechanism is used for driving the ultrasonic probe and the injector to move to the position of the articular cavity. Injection of the joint cavity of the laboratory mouse is guided based on the image collected by the ultrasonic probe, the needle inserting position, angle and depth of the injector can be observed and adjusted in real time, and compared with blind puncture in the prior art, the success rate of injection can be greatly increased, the number of times of puncture attempts can be reduced, and meanwhile the uniformity of laboratory mouse samples is effectively improved.
Owner:SICHUAN UNIV

Ear clip type earphone

The utility model relates to the technical field of electronic equipment, in particular to an ear clip type earphone, which comprises a sound production part, a function part and a connecting structure, and is characterized in that two ends of the connecting structure are respectively connected with the sound production part and the function part; on a horizontal plane projection in a wearing state, a center line is formed by taking the center of the distance between the sound production part and the function part as a center line, and the connecting structure is divided into two parts by the center line; the curvature of the connecting structure which is positioned on one side of the center line and is close to the sound production part is smaller than that of the connecting structure which is positioned on the other side of the center line and is close to the function part; when the ear clip type earphone is in a clamping wearing state, the function part is attached to the back of the ear, the sound production part faces the external auditory canal, the ear clamping space formed by the sound production part and the connecting structure is large, the situation that the inner contour of the earphone abuts against and extrudes the side edge of a helix and even the helix is wound is reduced, the compatibility of clamping ears of various shapes and sizes is good, and the ear clip type earphone is convenient to use. The comfort degree is high.
Owner:DONGGUAN EDIFIER TECH

A system for bilateral auricular nerve stimulation of the vagus nerve

A bilateral auricular nerve stimulation system of the vagus nerve, which comprises two adjustable stimulator devices (4) in each ear respectively where each one comprises a support piece (5) with a curved temple (6); three or more cathodal stimulation electrodes simultaneously, with a first and second electrode (1, 2) that fit into the cymba and cavum respectively and a third electrode (3) that fits into the external auditory canal (EAC), where all electrodes are connected to one or more anodes (32), and have means of adjustment to their area of action; a photoplethysmography biosensor (PPG) (7) located at the free end of the curved temple (6), and; control means inside the support piece (5); where the system comprises a connection and synchronization cable between both stimulator devices.
Owner:XANASTIM SÁRL

Intracranial pressure monitoring and drainage management device

The utility model discloses an intracranial pressure monitoring and drainage management device, and particularly relates to the technical field of medical treatment, the intracranial pressure monitoring and drainage management device comprises a main control device and a lifting device, the lifting device is fixedly installed on the main control device, and a suspension bracket is fixedly installed at the top end of the lifting device; a first height positioning signal generator is fixedly mounted at the top of the suspension bracket, a drainage bottle and a drainage collection bag are mounted on the suspension bracket and the main control equipment respectively and are communicated with the ventricle of a patient through ventricle drainage tubes, and a second height positioning signal generator is attached to the external auditory canal of the patient and is connected with the first height positioning signal generator. A temperature and pressure integrated sensor is fixedly mounted at one end of the ventricular drainage tube, and a height positioning signal receiver is fixedly mounted in the main control equipment. The UWB technology is used for achieving the purpose that the lifting device regulates and controls the height of the drainage bottle, then the intracranial pressure of a patient is kept stable, and the effects of intracranial pressure monitoring and drainage management are achieved.
Owner:ANHUI PROVINCIAL HOSPITAL

Ear device

The utility model discloses an ear device, comprising: a casing comprising an ear-hanging support and an in-ear part which are connected, the ear-hanging support being used for hanging and wearing on the auricle of a user; the driving assembly is installed on the machine shell; the ear canal acting piece is in driving connection with the driving assembly, and the ear canal acting piece is used for stretching into the external auditory canal of the user and acting on the external auditory canal. According to the technical scheme, the experience quality of auricle stimulation actions of the ear device can be guaranteed.
Owner:杜思思

Method and system for obtaining three-dimensional ear mold model and storage medium

The invention relates to the technical field of image processing, in particular to an ear mold three-dimensional model obtaining method and system and a storage medium. The method comprises the following steps: if acquisition parameters of an acquisition probe are lower than a preset acquisition parameter threshold value, controlling the acquisition probe to be inserted into an auditory meatus inlet, and acquiring an auricular conchae image; utilizing the auricular conchae image to identify the contour boundary of the auricular conchae, generating an entrance reference surface, and determining a auricular return fitting point; identifying an external auditory canal area according to the conchae contour boundary, collecting an external auditory canal image, extracting an auditory canal center line, measuring the sectional dimension, and constructing an eardrum curved surface; and performing hole repairing on the eardrum curved surface, performing smoothing processing, verifying the rationality of the eardrum structure, and exporting a standard three-dimensional eardrum file. According to the invention, the automatic generation of the standard three-dimensional ear mold is realized based on the image processing technology, and the ear mold reconstruction precision and the matching rate are improved.
Owner:HUIZHOU HONGXUANHE TECH CO LTD

Sleep care device

A sleep care device is disclosed. The sleep care device is mounted on the ear of a user, is not easily separated from the user's body while the user is in a sleep state, and can reliably measure brain wave signals. The sleep care device according to an example embodiment of the present invention includes a housing, an ear hook, and an ear tip. The ear hook is connected to the housing to form a closed loop, is placed between the user's head and the auricle, and includes an electrode having electrical conductivity. The ear tip is connected to the housing, is placed at the entrance to the external auditory canal, and has electrical conductivity. In addition, the ear hook and the ear tip are made of a material having flexibility and elasticity, and measure the user's brain waves.
Owner:SLEEPWAVE INC

Device for selective attenuation of noise emitted by dentistry equipment

The invention relates to a device (1) for the selective attenuation of noise emitted by dental equipment with a so-called active part (3) whose shapes and dimensions correspond to the shapes and dimensions of an human external auditory canal (4) being and adapted to be removably inserted into the canal (4), a gripping part (5) of the device (1), the active part (3) with at least one communication orifice (71, 81, 91) with the external auditory canal (4) and at least one tubular resonance chamber (7, 8, 9) having an open end (71, 81, 91) and a closed end. The active part (3) is configured as a cylinder with at least two straight, circular-based cylindrical resonance chambers (7, 8, 9) whose longitudinal axes (A7, A8, A9) are parallel to each other and to a longitudinal axis (A3) of the active part (3). At least two resonance chambers have different lengths.
Owner:SCORPION

system for attaching audiometric transducers to the head of a user and its adaptable calibration system

System for attaching transducers to the head of a user for performing audiometry in air stimulation and in vibratory stimulation. It comprises support means (1, 10, 20, 24) for two audiometric transducers (21) in air stimulation, each positionable at one of the auditory auricles or the external auditory canal, and at least one audiometric transducer (3, 13, 23) in vibratory stimulation, positionable at the desired stimulation zone depending on the chosen conduction mode (for example, one of the mastoids of the skull, forehead, soft tissues). Method for calibrating the transducers in vibratory stimulation fixed on a fixing system such as above. Figure for the abstract: Fig. 6
Owner:MY MEDICAL ASSISTANT

Earphone structure with enhanced tone quality

The utility model belongs to the technical field of earphones, and particularly relates to a sound quality enhancing earphone structure which comprises an earphone body and an ear hook connected with the earphone body. The earphone body comprises an external earphone shell; a mounting cavity is formed in the earphone shell, a sound outlet hole communicated with the mounting cavity is formed in the earphone shell, the position of the sound outlet hole is aligned with the position of an ear canal when the earphone is worn, a sound production unit is arranged in the mounting cavity, the sound production unit comprises a moving coil loudspeaker and a sound guide tube component connected with the moving coil loudspeaker, and a sound outlet hole communicated with the front sound cavity is formed in the earphone shell; the sound guide tube component comprises a sound guide channel. And the sound outlet hole faces the external auditory canal of the human body, so that the medium-high frequency directivity is strong, the loudness is large, and the effect of enhancing the medium-high frequency is achieved. Meanwhile, the sound guide tube part is arranged, the sound transmission direction can be changed through a sound guide channel, the peak resonant frequency of a harmonic peak of air guide sound in a middle-high frequency band or a high frequency band can be weakened conveniently, and the effect of middle and low frequencies can be effectively enhanced.
Owner:DONGGUAN LIESHENG ELECTRONICS CO LTD

Method for constructing rabbit ear acne model

The invention belongs to the technical field of medical experimental animal models, and particularly relates to a construction method of a rabbit ear acne model for studying acne pathogenesis and drug curative effect. A healthy New Zealand large-ear white rabbit is selected, a testosterone solution is subcutaneously injected to induce endocrine disorder, oleic acid is smeared at an opening of an external auditory canal on the inner side of an ear, dermatobacterium acnes suspension is subcutaneously injected, and whether acne-like lesions such as erythema, papule and comedo appear on the skin of the ear or not is observed. The method is easy and convenient to operate, low in cost, good in repeatability, capable of simulating the pathological process of human acne and suitable for acne pathogenesis research and drug screening.
Owner:NANJING CANCHEN MICROBIAL TECH

Setting device, method, and program

According to the present invention, an acoustic signal is emitted from a sound emission unit that does not seal the external auditory canal of a user, and an observation signal based on the acoustic signal is collected by a sound collection unit disposed at the position of a head that is neither the external auditory canal nor an open end of the external auditory canal. The observation signal is used for setting a head-related transfer function of the user.
Owner:NT T INC

Ear-mounted device

To provide an ear-mounted device that readily conforms to the shape of a user's ear canal.SOLUTION: An ear-mounted device 100 includes a plug body portion 1 inserted into the external auditory canal and a support portion 5 supporting the plug body portion 1. The support portion 5 is formed in a columnar shape. The plug body portion 1 is supported at its axial tip end on the support portion 5, and has a dome-shaped configuration in which the surface at the axial tip end is convexly curved towards the tip end, and in which the outer periphery of the dome-shaped configuration is divided into a plurality of adjacent petal-shaped portions 4 along the circumferential direction of the support portion 5.SELECTED DRAWING: Figure 2
Owner:KOBAYASHI PHARMA CO LTD

Earplugs (flowers)

1. The name of this design product: Earplugs (Flower). 2. Purpose of this product: To be inserted into the external auditory canal to isolate sound or block water. 3. The key point of the design of this product lies in the three-dimensional image. 4. The picture or photo that best illustrates the design points: three-dimensional picture.
Owner:李想

An external auditory canal postoperative anti-stenosis dilating stent

ActiveCN120114252BEar treatmentExternal Auditory CanalsExternal auditory canal operations
The application discloses an expansion stent for preventing stenosis after external auditory canal operation and belongs to the technical field of external auditory canal postoperative care. The position of the adjusting ring is adjusted by operating the locking assembly, so that the five hollow rods can be in contact with the inner wall of the external auditory canal. Since the internal structure of the external auditory canal is not a regular circle, the multiple hollow rods are in contact with the internal structure of the external auditory canal in sequence during movement, thereby preventing long-term stenosis or recurrence of the external auditory canal. When the dynamic adjustment is performed according to the individual differences and growth changes of the external auditory canal, the gas is introduced into the hollow rods, the gas entering the internal structure of the hollow rods can extrude the multiple rubber air rings, the rubber air rings can be inflated and in contact with the inner wall of the external auditory canal, the sensing module is used for monitoring the pressure and deformation data in the external auditory canal in real time, the expansion state can be dynamically adjusted according to the individual differences and growth changes of the external auditory canal, the expansion effect is improved, and the rubber air rings are used for flexibly supporting the external auditory canal, so that the external auditory canal is not damaged.
Owner:XIEHE HOSPITAL ATTACHED TO TONGJI MEDICAL COLLEGE HUAZHONG SCI & TECH UNIV

Acoustic output device

One or more embodiments of the present specification relate to an acoustic output device comprising: a housing forming an inner cavity; the supporting structure is used for wearing the shell on the ear without blocking the external auditory canal; a first loudspeaker, wherein the first loudspeaker is accommodated in the inner cavity; the first loudspeaker comprises a first magnet and a first vibrating diaphragm, and the first magnet and the first vibrating diaphragm are arranged at an interval along the vibration direction of the first vibrating diaphragm; a second loudspeaker, wherein the second loudspeaker is accommodated in the inner cavity; and the second loudspeaker comprises a second magnet and a second vibrating diaphragm, and the second magnet and the second vibrating diaphragm are arranged at an interval along the vibration direction of the second vibrating diaphragm.
Owner:SHENZHEN SHOKZ CO LTD

Glasses leg system and intelligent glasses

The utility model belongs to the technical field of intelligent wearable equipment, and discloses a glasses leg system and intelligent glasses, and the glasses leg system comprises glasses legs, a loudspeaker assembly and a covering assembly. The loudspeaker assembly is provided with a first sound outlet hole and a second sound outlet hole, and the loudspeaker assembly is adjustably connected to the glasses legs and has a first position and a second position relative to the glasses legs; when the loudspeaker assembly is located at the first position, the extension direction of the loudspeaker assembly is the same as that of the glasses legs; when the loudspeaker assembly is located at the second position, an included angle is formed between the loudspeaker assembly and the glasses leg, and the second sound hole faces the external auditory canal of the ear; the covering assembly is slidably connected to the loudspeaker assembly, and the covering assembly is provided with a covering position for covering the first sound outlet hole and an exposing position for exposing the first sound outlet hole. The glasses leg system and the intelligent glasses provided by the utility model have relatively high sound effect and sound quality, and have relatively small damage to eardrums.
Owner:LUXSHARE PRECISION TECH(NANJING) CO LTD

External auditory canal foreign matter bonding device

The invention relates to an external auditory canal foreign matter bonding device which comprises a pipe body, a ring body is movably connected to the position, close to the top, outside the pipe body through a bearing, a threaded pipe is movably connected to the position, close to the bottom, of the pipe body through threads, and a plurality of uniformly-distributed bonding rods are hinged between the ring body and the threaded pipe and are distributed outside the pipe body in a circular truncated cone shape. The top of the pipe body is connected with an upper cover body through bolts, the bottom of the pipe body is provided with a lower cover body through bolts, one side, close to the top, of the bonding rod is connected with a first rotating shaft through bolts, and the other end of the first rotating shaft is movably connected with a first bonding plate through a bearing. According to the technical scheme, through mutual cooperation of a threaded pipe, a ring body, a first rotating shaft, a second rotating shaft, a first attaching plate, a second attaching plate and other components, the bonding device can drive a plurality of bonding rods to effectively expand and contract, so that the bonding device can adapt to use of different crowds, foreign matter can be effectively and uniformly bonded, and the bonding efficiency is improved. And the application range and the foreign matter bonding efficiency are improved.
Owner:AFFILIATED HOSPITAL OF NANTONG UNIV

Degradable fixing ring for fixing external auditory canal flap in external auditory meatus plasty

The utility model discloses a degradable fixing ring for fixing an external auditory canal flap in external auditory meatus plasty, which is formed by bending and connecting a degradable belt, nesting structures which can be nested together are arranged at the head end and the tail end of the degradable belt, and a degradable supporting ring can be stretched and enlarged by stretching the connection at the nesting structures, so that the degradable fixing ring can be used for fixing the external auditory meatus flap in the external auditory meatus plasty. Limiting structures are further arranged at the head end and the tail end of the degradable belt, the limiting structures can limit the degradable supporting ring to shrink backwards after the degradable supporting ring extends and becomes larger, and a connecting part used for being fixedly connected with an external auditory canal transplantation flap is arranged on the degradable supporting ring. The external auditory canal graft flap fixing device can fix an external auditory canal graft flap, reduce the number of times of returning to hospital of a patient, and improve the compliance and medical experience of the patient.
Owner:SUN YAT SEN MEMORIAL HOSPITAL SUN YAT SEN UNIV

Sound output device

Provided is a sound output device including a drive unit that has a sound output section inside and that is formed in an annular shape and an electric unit that has a drive control section inside and that is coupled to the drive unit. A space inside the drive unit is formed as an intake hole that takes in an external sound. The sound output device is attached to an ear with the drive unit inserted into a cavum concha. Accordingly, in a state in which the electric unit is coupled to the drive unit and the drive unit is inserted into the cavum concha to be attached to the ear, an external sound taken in from the intake hole that is the space inside the drive unit goes to the external auditory canal. Therefore, a stable and favorable wearing state on the ear can be ensured, and at the same time, a state in which an external sound is taken in naturally can be ensured.
Owner:SONY GROUP CORP

Novel anti-falling ear ventilation pipe

The utility model discloses a novel anti-drop ear ventilation pipe, which comprises a pipe body with an external auditory canal end and a tympanic chamber end, a through channel is arranged in the pipe body, the inner side wall of the pipe body axially extends towards the tympanic chamber end to form a bending part, and when the tympanic chamber end of the pipe body is implanted into a tympanic membrane, the tympanic membrane is inserted into the tympanic chamber end of the pipe body. And the bending part can be bent towards the periphery of the tube body so as to enlarge the contact surface with the inner side of the tympanic membrane. The ventilation pipe can be better fixed to the tympanic membrane after the bending part with the extension bending performance is expanded and unfolded, the ventilation pipe is effectively prevented from falling off, the surface of the pipe body is provided with the silver ion coating with the antibacterial characteristic, the antibacterial effect is achieved, the pipe body is provided with the cutting edge, the tympanic membrane can be cut open conveniently, the ventilation pipe is arranged, and the ventilation pipe is convenient to use. And the use experience of the user can be better improved.
Owner:GALILEO (XIAMEN) TECH CO LTD

Parameter measurement system and method based on external auditory canal three-dimensional reconstruction

The invention discloses a parameter measurement system and method based on external auditory canal three-dimensional reconstruction, and relates to the technical field of parameter measurement, and the system comprises a scanning module which is used for obtaining a temporal bone scanning image; the boundary extraction module is used for performing external auditory canal boundary extraction on the temporal bone scanning image to obtain external auditory canal boundary features; the model building module is used for building an external auditory canal three-dimensional model according to a moving cube algorithm based on external auditory canal boundary features; the interception module is used for performing dynamic interception according to the external auditory canal three-dimensional model to obtain an external auditory canal continuous cross section; and the map construction module is used for carrying out multi-dimensional measurement analysis and constructing an external auditory canal parameter mapping map. The technical problems that in the prior art, external auditory canal morphological analysis is low in precision and lacks continuity and three-dimensional structure information are solved, and the technical effect of high-precision, continuous and visual external auditory canal three-dimensional parameter measurement and mapping is achieved by introducing threshold value self-adaptive segmentation, moving cube three-dimensional modeling and multi-dimensional parameter analysis.
Owner:THE SIXTH MEDICAL CENT OF THE CHINESE PEOPLES LIBERATION ARMY GENERAL HOSPITAL

Open type earphone

[Problem] To provide an open-type earphone which does not give a sense of oppression to the ears, makes it easy to hear ambient sound, has high sound insulation properties, and does not leak sound. [Solution] An open earphone (1) is provided with: an earphone main body (2) in which a speaker (5) is built; an acoustic conduit 3 that extends obliquely from the earphone body 2 and is inserted into the external auditory canal 11 of the ear; and earrings (4) attached to the outer surface of the sound conduit (3) in which a first communication path (6) for communicating the speaker (5) with the external auditory canal (11) of the ear and a groove (7) for communicating the atmosphere with the external auditory canal of the ear are formed, and the sound conduit (3) is inclined at an angle of 50-70 DEG with respect to the earphone body (2). The ear ring (4) is formed by integrally connecting two rings (4A, 4B) made of an elastic material, and one end side of each of the two rings (4A, 4B) in the length direction is mounted on the outer side surface of the sound guide tube (3).
Owner:株式会社慕悟

External auditory canal flushing device for otolaryngology department nursing

The external auditory canal flushing device comprises a supporting plate, a neck winding groove used for being arranged on the neck of a patient in a sleeved mode is formed in one end of the supporting plate, bandages are installed at the two ends of the bottom of the supporting plate, a sliding plate is installed at the end, away from the neck winding groove, of the top of the supporting plate, and the sliding plate is connected with the supporting plate. A sliding plate is installed on the supporting plate and can move in the length direction of the supporting plate, a telescopic rod is installed on the sliding plate and can move in the length direction of the sliding plate, a leakage receiving box is fixedly connected to the top of the telescopic rod, and the leakage receiving box can be adjusted in a sliding mode in the front-back direction, the left-right direction and the up-down direction. The leakage receiving box does not need to be worried about shaking caused by unstable holding of the leakage receiving box by a patient or a guardian, and liquid is prevented from dripping on shoulders or clothes of the patient.
Owner:RENMIN HOSPITAL OF WUHAN UNIVERSITY (HUBEI GENERAL HOSPITAL)

Silicone earplug

1. The name of the design product: silica gel earplug. 2. The use of the design product: the design product is used to plug into the external auditory canal, and has the functions of sound reduction, noise reduction, waterproof and ear protection. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.
Owner:李美英

Noninvasive ICP (inductively coupled plasma) detection and regulation system

The invention discloses a noninvasive ICP detection and regulation system which comprises a transcranial Doppler monitoring module, an intraocular pressure sensing module, a tympanic membrane pressure monitoring module, an abdominal pressurization regulation module, a data fusion processing module, an alarm module and a power management module. The monitoring modules collect intracranial artery blood flow velocity waveforms, intraocular pressure pulsation and external auditory canal pressure fluctuation signals respectively and transmit the signals to the data fusion processing module for comprehensive analysis to generate an ICP evaluation result. When the evaluation value exceeds the preset range, the alarm module is triggered, and an instruction is sent to the abdomen pressurization regulation and control module to regulate the abdomen pressure. And the power management module supplies power to each module. According to the system, the detection accuracy is improved through multi-signal fusion, a monitoring-regulation closed-loop mechanism is formed, manual operation is not needed, the response time is shortened, and the regulation consistency is ensured.
Owner:PEKING UNIVERSITY THIRD HOSPITAL (THE THIRD CLINICAL MEDICAL SCHOOL OF PEKING UNIVERSITY)

A tympanic ventilation tube with screw locking, multiple waterproofing and valve control drainage functions

The application discloses a tympanic ventilation tube with spiral locking, multiple waterproof and valve control drainage functions, and belongs to the field of ear implant medical devices. The ventilation tube comprises a tube body, an implant device interface is arranged at the outermost end of the tube body, a one-way duckbill valve is arranged at the end close to the external auditory canal, micro-flow ventilation holes are distributed in the circumferential direction of the side wall, a flexible sealing sheet is arranged on the outer side of the tube body, and a continuous single-ring gradually-changing asymmetric spiral fixing structure is arranged on the outer periphery of the middle ear cavity. The spiral fixing structure induces the radial flanging of the tympanic membrane tissue to be embedded between the spiral structure and the outer wall of the tube body to form axial locking through the asymmetric section, and realizes gradual release when reversely rotating through the rise angle, tooth height and round angle gradient; the sealing sheet realizes stable adhesion and controllable peeling through the thickness gradient, pre-stress and surface energy gradient; the micro-flow ventilation holes and the duckbill valve constitute a gas-liquid separation double channel, realize low-resistance ventilation, liquid blocking and pressure-driven drainage. The application can realize stable fixation, water-tight sealing, controllable ventilation, one-way drainage and low-damage implantation and removal.
Owner:EYE & ENT HOSPITAL SHANGHAI MEDICAL SCHOOL FUDAN UNIV

Headphone and multi-layer noise reducing earphone assembly

The present disclosure relates to a headphone and a multi-layer noise reduction earphone assembly. The headphone comprises an ear cover arranged outside an auricle, an ear cover microphone arranged outside the ear cover for collecting ambient sound, and a first speaker arranged inside the ear cover for playing noise reduction sound corresponding to the ambient sound collected by the ear cover microphone and / or playing audio. When in use, the inside of the ear cover and the auricle form a containing space for accommodating the part of an in-ear earphone exposed outside the external auditory canal. The headphone and the auricle form a containing space for accommodating the in-ear earphone. The headphone can be used alone or with any in-ear earphone. When the headphone is used in combination with the in-ear earphone, the noise is reduced by the active or passive noise reduction of the in-ear earphone and the active and passive noise reduction of the headphone, forming multi-layer noise reduction and achieving better noise reduction effect. The problem of insufficient noise reduction is solved, and the noise reduction effect is greatly improved.
Owner:BEIJING XIAOMI MOBILE SOFTWARE CO LTD