The occurrence of oval window atresia is a rare anomaly with conductive hearing loss. Traditional atresia surgeries involve challenging surgical techniques with risks of irreversible inner ear damage. Recent reports on Bonebridge (Medel, Innsbruck, Austria), a novel implantable bone conduction hearing aid system, assert that the device is safe and effective for conductive hearing loss. We prese...

OBJECTIVES/HYPOTHESIS High negative pressure in the middle ear was thought to be closely related to the etiology of retraction-type cholesteatoma. Recently, it has been detected that mechanical forces are important factors in epithelial turnover and affect cytoskeletal remodeling. Continuous negative pressure in the middle ear may possibly accelerate the proliferation and differentiation of epi...

Machines and equipment or work processes that make noise. Evaluation of noise intensity is carried out by making a map describes the distribution pattern from 278 measurement points then processed with surfer software, which becomes basic information to protect workers risk hearing loss. After measuring analyzing data, level ranged lowest 41.0 dBA, highest 101.9 dBA. From map, it can be seen ma...

To solve the problem of grain loss caused by nibbling during working process maize ear and stem harvesting machine, a vibrating screen-type grain-recovery device with an upper centrifugal fan was designed. The mainly consists screen. work is theoretically analyzed, it clarified that turning bracts key to separating from grains, design criteria screen are obtained. CFD–EDEM coupled single-factor...

A.D. 150 Galen describes incising “caries of the auditory meatus” 1363 Guy de Chauliac’s device to inspect ear by direct sunlight 1640 – Banzer uses pig bladder as artificial tympanic membrane 1646 Aural speculum by Hildanus 1653 Light microscope by Antony van Leeuwenhoek 1791 Death of Baron von Berger after mastoid trephination for tinnitus and deafness 1832 “Inspector Auris” by Thomas Buchana...

This article describes the use of computer-aided techniques to produce a wax pattern of a missing ear. A 3-dimensional (3-D) computer model of a conventional cast from a patient was obtained using an optical surface capture device (scanner). The 3-D computer model was inverted, using computer-aided design software. A physical thermoplastic (wax) pattern of the inverted 3-D cast was produced usi...

We conducted a study of 80 patients to evaluate the accuracy of a commercially available acoustic reflectometer in identifying the presence or absence of otitis media with effusion (OME). This device assesses bilateral tympanic membrane mobility and, by inference, middle ear status. We found that it was most accurate in patients with normal and grossly fluid-filled ears. We recommend screening ...