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Product and Equipment Analysis
Published in Sunderesh S. Heragu, Facilities Design, 2022
As an illustration, we consider a single product manufactured by a medical equipment company—the 3.5-volt halogen pneumatic otoscope, a product used by physicians to examine a patient’s ear canal and ear drum. The multilevel exploded bill of materials for this product is shown in Figure 6.1. Notice that the top-level assemblies are indicated by the digit 1 in the first column of the figure, the second-level subassemblies by 0.2, third level by ..3, and so on. Also shown are the part numbers, their description, and quantity used per unit of the final product—the 3.5-volt halogen otoscope. Purchased parts have a part number with M or 9 as the first character.
Visual Inspection of Tissues with Certain Endoscopes and Other Optical Devices
Published in Robert B. Northrop, Non-Invasive Instrumentation and Measurement in Medical Diagnosis, 2017
An otoscope can be used to locate impacted cerumen (earwax) in the ear canal, as well as foreign objects (insects, Q-tip heads, beans, etc.). The otoscope is also useful in diagnosing middle ear infection through eardrum color. Convexity can mean fluid pressure in the middle ear, and of course tears and perforations can signify trauma and/or infection. The coaxial design of the Hotchkiss otoscope is particularly well suited for observation of ear canal procedures as they are done (e.g., removing cerumen or foreign objects).
Vestibular and Related Oculomotor Disorders
Published in Anthony N. Nicholson, The Neurosciences and the Practice of Aviation Medicine, 2017
Nicholas J. Cutfield, Adolfo M. Bronstein
Examination may reveal a conductive or sensorineural hearing loss and/or a unilateral nystagmus suggestive of impaired vestibular function. These can be confirmed with an audiogram and electro-oculography. If there is the possibility of recent trauma to the tympanic membrane, caloric irrigation to investigate vestibular function may be contraindicated. Nystagmus may be provoked by inducing a pressure change by a finger over the external ear canal, a pneumatic otoscope or a Valsalva manoeuvre.
News and Product Update
Published in Journal of Medical Engineering & Technology, 2023
The e-scope® pocket otoscope is a lightweight, economical otoscope from Rudolf Riester GmbH that is ideally weighted and sized to be carried in a pocket all day. The otoscope uses AA alkaline batteries (sold separately), employs a pen clip to easily keep it in place, and comes with varied illumination. e-scope® otoscopes are available with halogen or vacuum direct illumination, fibre optic xenon (3200K) or fibre optic 3.7 V LED (5500K). With respect to the latter, a tiny IPC inside the e-scope® always converts the voltage of conventional AA-size batteries into the optimum voltage supply for LEDs, enabling efficient operation of LED illumination with alkaline batteries. As a result, the IPC not only ensures optimum light quality, but also provides economic and ecological benefits. With this innovation, the service life of a light-emitting diode is up to 1,000 times longer than that of xenon illumination and the batteries used in the e-scope® are discharged considerably more thoroughly thanks to the IPC; consequently, they do not need to be disposed of and replaced as often. The LED burns for at least 20,000 h, i.e. over 2 years at a go with e-scope®, even with two conventional AA batteries. Other features include a Dioptre disc with 18 corrective lenses (± 1, 2, 3, 4, 6, 8, 10, 15, 20 dioptres), an easy-to-use aperture wheel with six different apertures (fixation star, large circle, small circle, red free filter, blue filter, semi-circle) and high-performance optics with an aspherical condenser lens. The otoscope has sealing precision optics pivotable to both sides with 3x magnification for optimum view, replete with a sturdy ear specula receptacle in hardwearing hygienic metal.