Filter for a hearing aid and a hearing aid
AssigneeWidex A/S
InventorsJorn Eiler VESTERGAARD, Jorgen Mejner Olsen, Leif Hojslet Christensen, Kenneth B. Haugshoj
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Abstract
A hearing aid (1) comprises a receiver (19), an output port (6), a conduit (13) for conveying sound to the port and a barrier element (39) adapted for baffling entry of ear wax and moisture and for being acoustically transparent. The invention further provides a barrier element (39) for a hearing aid comprising a slab having an exterior surface and through openings for transverse transmission of sound, wherein the exterior surface is super-hydrophobic.
Claims10
A hearing aid comprising a receiver, an output port, a conduit for conveying sound to the port and a barrier element adapted for baffling entry of ear wax and moisture and for being acoustically transparent, wherein the barrier element comprises a slab with an exterior surface that has been microstructured and surface coated by molecular vapor deposition with a moisture repellant matter in such a way as to make the surface super-hydrophobic, and wherein the barrier element has a number of through-going pores, the diameter d of each of the pores being smaller than 200 microns.
A barrier element for a hearing aid comprising a slab having an exterior surface and through-going openings for transverse transmission of sound, wherein the exterior surface has been microstructured and surface coated by molecular vapor deposition with a moisture repellant matter in such a way as to make the surface super-hydrophobic, and wherein the through-going openings comprises pores each having a diameter d smaller than 200 microns.
Dependencies are inferred from the claim text.