| abstract |
This invention is an apparatus (10) for delivering fluid materials into, and out of the inner ear (204) via the round window membrane (206). A fluid transfer conduit (12) is provided which includes one or more passageways (22, 34, 162) therethrough which may have a semipermeable membrane (130) associated therewith to control fluid flow. Attached to the conduit (12) is an inflatable bladder (46) sized for insertion within the round window niche (210). When inflated, the bladder engages the internal side wall (214) of the niche (210), thereby securing the bladder, and part of the conduit within the niche (210). Bladder inflation may be achieved through one of the passageways (34) within the conduit which can deliver an inflation fluid into the bladder. Also, the conduit (12) may include an elongate conductive diagnostic member (102) for transferring electrical potentials to, and from the inner ear. |