Abstract
The BAHA® device uses the principle of direct bone conduction (DBC) to overcome several of the drawbacks of conventional air-conduction (AC) and bone-conduction (BC) hearing aids for patients with conductive or mixed hearing loss. Recent developments of the BAHA system have made it more user friendly and the device has been further miniaturized. The FDA has cleared the device for both adults and pediatrics (from age 5 and up) and also for bilateral fitting. With the BAHA system, a vibrating transducer is directly connected to the skull bone, of which the cochlea is an integrated part. This principle of DBC provides a more or less direct and clear transmission pathway to the cochlea. The BAHA surgery is, however, a minor surgical procedure and does not in any way interfere with the hearing organ so there are no risks of damaging the ear or the residual hearing. Scientific papers about BAHA from around the world report high performance, safety, and patient satisfaction. (Tjellstrom and Granstrom, 1995; Powell et al., 1996; Hartland et al., 1996; Papsin et al., 1997; Tietze et al., 2001; Tjellstrom and Hakansson, 2001; Snik et al., 2001; Lustig et al., 2001). Today, more than 9000 patients around the world have been treated with BAHA.
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