Patent ID: 7298857
Filing Date: 2007-11-20
Classification: H04R

Abstract:
1. A continuous wear hearing device adapted to be worn entirely within an ear canal of a wearer, the device comprising: a receiver assembly sized to be positioned in the bony portion of the ear canal, the receiver assembly including a receiver for supplying acoustic signals to a tympanic membrane of the wearer; a battery assembly including a metal-air battery and a battery vent, the battery coupled to the receiver assembly; and a microphone assembly coupled to the battery assembly, the microphone assembly including a microphone and a microphone sound port, the sound port facing a medial direction with respect to the ear canal, the orientation and position of the microphone in the ear canal configured to reduce fouling of the sound port by cerumen; wherein the positioning of the microphone assembly defines an air cavity disposed between the microphone assembly and the battery assembly and wherein the microphone sound port and the battery vent are fluidically coupled to the air cavity.