Design principle. The American National Standard Specifications for Audiometers (ANSI S3.6-2010) provides a specification for the force applied by a spring headband used to couple a bone-conduction vibrator to the head. The standard states that the headband should hold the bone vibrator in position with a static force of 5.4 ± 0.5 N. The specification is intended for use with the type of steel spring headband typically provided with audiometers. The actual force exerted by the steel headband varies widely depending on the size of the head and the placement location (mastoid or forehead) and is not appropriate for infants. The AUDIOLOGY INCORPORATED Bone Conduction Headband is designed to provide a force of 5.4 ± 0.5 N for head circumferences that span the range of head sizes for newborns, infants, and adults. The three attachment points are spaced to provide the proper force for newborn infants, 6-12 month infants, and children and adults (age 5 years and up). The force exerted by the headband is the same for mastoid and forehead location. Research on the influence of coupling force on bone-conduction thresholds indicates that bone-conduction thresholds do not change significantly over the range of pressure variations that occur with AMBAND. The headband can be used with Radioear B-71 and Radioear B-81 bone vibrators.
Instructions for use. The headband can be used to couple the bone conduction vibrator to the head in either the forehead or mastoid position. A Velcro dot (provided with the headband) can be attached to the back of the bone vibrator to stabilize it under the headband. Use the appropriate attachment point based on the age and head size.
The headband is intended for single use.
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