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An ear trumpet is a tubular or funnel-shaped device which collects sound waves and leads them into the ear. They are used as hearing aids, resulting in a strengthening of the sound energy impact to the eardrum and thus improved hearing for a deaf or hard-of-hearing individual. Ear trumpets were made of sheet metal, silver, wood, snail shells or ...
Patulous Eustachian tube is a physical disorder. The exact causes may vary depending on the person and are often unknown. [5] Weight loss is a commonly cited cause of the disorder due to the nature of the Eustachian tube itself and is associated with approximately one-third of reported cases. [6]
A modern behind the ear hearing aid with a minicell battery. Behind the ear hearing aids are one of two major classes of hearing aids – behind the ear (BTE) and in the ear (ITE). These two classes are distinguished by where the hearing aid is worn. BTE hearing aids consist of a case which hangs behind the pinna. The case is attached to an ...
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He does not admit to being near-deaf and insists he is only slightly hard of hearing in one ear, occasionally making use of an ear trumpet to hear better. Calculus first appeared in Red Rackham's Treasure (more specifically in the newspaper prepublication of 4–5 March 1943 [ 2 ] ), and was the result of Hergé's long quest to find the ...
If this fails, then the Valsalva maneuver may be used. This maneuver, when used as a tool to equalize middle ear pressure, carries with it the risk of auditory damage from over-pressurization of the middle ear. [1] [6] [8] The Valsalva maneuver generates about 20–40 mm of Hg pressure. [9]
Well-known models of the period included the Townsend Trumpet (made by the deaf educator John Townshend), the Reynolds Trumpet (specially built for painter Joshua Reynolds) and the Daubeney Trumpet. The first firm to begin commercial production of the ear trumpet was established by Frederick C. Rein in London in 1800.
Returning to Vienna, he gave his attention to the construction of an automaton trumpeter, which, with lifelike movements and sudden changes of attire, performed French and Austrian field signals and military airs. In 1808 he invented an improved ear trumpet, and a musical chronometer. In 1813 Maelzel and Beethoven were on familiar terms.