Patent ID: 8973703
Filing Date: 2015-03-10
Classification: H04R

Abstract:
1. A high retention aural transmission device, comprising: a unitary body comprising a plurality of regions, each region having a hardness differentiated from the hardness of each of the other regions, the unitary body adapted to be removably inserted into a canal of an ear, the body defining a central lumen extending from a proximal end of the body to a distal end of the body to provide fluid communication from a region external to the canal, wherein the body comprises: (a) an adapter portion disposed at the proximal end of the body to couple an audio signal from an audio signal source to the central lumen; (b) a retention portion disposed at a distal end of the body along a distal end axis, and when inserted in the ear canal, the retention portion is adapted to engage the canal wall between a tip of a prominence of the ear and a membrane of the eardrum; and, (c) a central portion disposed along the length of the body between the adapter portion and the retention portion and defining a valley point in a concave structure formed between the adapter portion and the retention portion, wherein the distal end extends at least 5 millimeters into the canal past the tip of the prominence, wherein the unitary body is adapted to engage the canal wall on a concave surface portion located generally opposite the prominence.