Inter alia , there is disclosed an implantable device characterized in that it comprises: an implantable electrode carrier having an outer surface including a plurality of electrode contacts for electrically stimulating nearby neural tissue； an enlarged fluid storage reservoir within the electrode carrier for storing a treatment volume of therapeutic fluid for an extended therapeutic treatment period； and at least one fluid delivery port connecting the fluid storage reservoir to the outer surface of the electrode carrier for delivering the therapeutic fluid from the fluid storage reservoir to the outer surface.와우 조직을 전기적으로 자극하기 위한 이식 가능한 와우 전극 어레이는 시간에 걸쳐 내이에 대해 치료에 효과적인 양의 약제를 배출하도록 구성된 폴리머 물질의 약물 용리부를 포함한다.
