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Extended Wear Hearing Aid
An extended-wear hearing aid is a type of hearing aid that is placed deep in the ear canal and can be worn for several months at a time without removal. This type of hearing aid is primarily suited for people who have mild to moderately severe hearing loss. This new hearing aid concept was invented by Adnan Shennib, founder of InSound Medical, Inc. The location of these aids directly in the ear canal can provide reduced distortion, wind noise, occlusion and feedback as well as better sound directionality and quality compared to other hearing aids. Use and operation Extended wear hearing aids are made of a soft material designed to contour to each user's ear canal, with a range of canal width sizes to accommodate ear dimensions. An ENT physician, audiologist or hearing aid specialist non-surgically inserts the device into the ear, placing it in the bony portion of the ear canal ~4 mm from the tympanic membrane, or eardrum. The specific placement in the ear canal is said to pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Hearing Aid
A hearing aid is a device designed to improve hearing by making sound audible to a person with hearing loss. Hearing aids are classified as medical devices in most countries, and regulated by the respective regulations. Small audio amplifiers such as personal sound amplification products (PSAPs) or other plain sound reinforcing systems cannot be sold as "hearing aids". Early devices, such as ear trumpets or ear horns, were passive amplification cones designed to gather sound energy and direct it into the ear canal. Modern devices are computerised electroacoustic systems that transform environmental sound to make it audible, according to audiometrical and cognitive rules. Modern devices also utilize sophisticated digital signal processing, aiming to improve speech intelligibility and comfort for the user. Such signal processing includes feedback management, wide dynamic range compression, directionality, frequency lowering, and noise reduction. Modern hearing aids requi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Audiologist
Audiology (from Latin 'to hear'; and from Greek branch of learning , ''-logia'') is a branch of science that studies hearing, balance, and related disorders. Audiologists treat those with hearing loss and proactively prevent related damage. By employing various testing strategies (e.g. behavioral hearing tests, otoacoustic emission measurements, and electrophysiologic tests), audiologists aim to determine whether someone has normal sensitivity to sounds. If hearing loss is identified, audiologists determine which portions of hearing (high, middle, or low frequencies) are affected, to what degree (severity of loss), and where the lesion causing the hearing loss is found ( outer ear, middle ear, inner ear, auditory nerve and/or central nervous system). If an audiologist determines that a hearing loss or vestibular abnormality is present, they will provide recommendations for interventions or rehabilitation (e.g. hearing aids, cochlear implants, appropriate medical referrals). I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Audioprosthology
Audioprosthology is the profession of the fitting of a hearing aid, or auditory prosthesis. An audioprosthologist is defined as “an aid-fitting specialist who has completed a course in audioprosthology.” This term was adopted by a group of hearing instrument specialists and the International Hearing Society (IHS) in 1976. The American Conference on Audioprosthology (ACA) sponsored courses in audioprosthology until 2016. Currently, the American Conference of Audioprosthology program is being revamped for distance learning. Definition The roots of the term make its definition self-explanatory: audio for hearing, prosthetic for device, and ology for science. “Audio” as used in both “audiology” and “audioprosthology,” is derived from the Latin term “audire,” which means “to hear,” and is commonly used in numerous other English words that are related in varying ways to hearing and sound. Audioprosthology was originally formed by the International Hearing Socie ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Eardrum
In the anatomy of humans and various other tetrapods, the eardrum, also called the tympanic membrane or myringa, is a thin, cone-shaped membrane that separates the external ear from the middle ear. Its function is to transmit changes in pressure of sound from the air to the ossicles inside the middle ear, and thence to the oval window in the fluid-filled cochlea. The ear thereby converts and amplifies vibration in the air to vibration in cochlear fluid. The malleus bone bridges the gap between the eardrum and the other ossicles. Rupture or perforation of the eardrum can lead to conductive hearing loss. Collapse or retraction of the eardrum can cause conductive hearing loss or cholesteatoma. Structure Orientation and relations The tympanic membrane is oriented obliquely in the anteroposterior, mediolateral, and superoinferior planes. Consequently, its superoposterior end lies lateral to its anteroinferior end. Anatomically, it relates superiorly to the middle crani ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Cerumen
Earwax, also known by the medical term cerumen, is a waxy substance secreted in the ear canal of humans and other mammals. Earwax can be many colors, including brown, orange, red, yellowish, and gray. Earwax protects the skin of the human ear canal, assists in cleaning and lubrication, and provides protection against bacteria, fungus, fungi, particulate matter, and water. Major components of earwax include Ceruminous gland, cerumen, produced by a type of Ceruminous gland, modified sweat gland, and Sebaceous gland, sebum, an oily substance. Both components are made by glands located in the ear canal, outer ear canal. The chemical composition of earwax includes Saturated fat, saturated and Unsaturated fat, unsaturated Fatty acid#Length of free fatty acid chains, long chain fatty acids, alcohols, squalene, and cholesterol. Earwax also contains Desquamation, dead Keratinocyte, skin cells and hair. Excess or compacted cerumen is the buildup of ear wax causing a blockage in the ear c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
