Patent ID: 9131323
Filing Date: 2015-09-08
Classification: H04R

Abstract:
1. An actuator system implantable in a recipient, the system comprising: a hermetically sealed housing; an actuator positioned in the housing and having at least one element displaceable relative to the housing; a coupling element configured for connecting the actuator to a structure of the recipient's ear; a diaphragm positioned at an end of the housing to provide a hermetic seal between the coupling element and the housing, wherein the diaphragm is configured to exhibit sufficient flexibility to permit the coupling element to transmit vibrations between the actuator and the structure of the recipient's ear; and a liquid disposed within the housing, the liquid contacting the diaphragm and surrounding the displaceable element of the actuator to dampen the frequency response of the actuator, wherein the actuator is an electromechanical actuator comprising a plurality of magnets, and wherein the displaceable element of the actuator comprises an armature positioned between the magnets.