Abstract: An apparatus may include a needle for sustained delivery of drugs and other agents to the inner ear or other tissues of a human or an animal. The needle can include an insertion stop, and can be placed through the round window membrane or through a surgically-prepared hole in a bone. The needle can be in fluid communication with a port and/or with a micro-infusion or osmotic pump. A cochlear implant electrode can be used instead of a needle.

Abstract: An implantable tissue-stimulating device for an implantee. The device comprising gate member having at least one electrode. At least a portion of the surface of the member having a configuration that at least partially controls any tissue growth on round the elongate member.

Abstract: A cochlear implant electrode assembly device comprising an elongate electrode carrier member (10) that has a chamber or lumen (14) for receiving a bioactive fluid that is delivered therein, and a fluid transfer connector (50) that is in fluid communication with the chamber (14) and through which a bioactive fluid can move from a location external the carrier member, such as a reservoir (23), to the chamber (14).

Abstract: The present invention relates to a device for picking up biological electrical signals, and more precisely auditory evoked potentials generated by acoustic and/or electrical and/or mechanical stimulation of the cochlea, or of a portion of the auditory system in man or animal. The device for measuring or picking up auditory evoked potentials is surgically implantable in the temporo-occipital area and comprises at least two extracochlear pickup electrodes connected to the inputs of a differential amplifier.

Abstract: An electrode array (10) that is implantable within the inferior colliculus of the midbrain and/or other appropriate regions of the brain of an implantee and adapted to provide electrical stimulation thereto. The electrode array (10) an elongate member (11) having a plurality of electrodes (12) mounted thereon in a longitudinal array. A delivery cannula (30) for delivering the electrode array (10) comprised of two half-pipes (31) is also described.

Abstract: The present invention relates to a device for picking up biological electrical signals, and more precisely auditory evoked potentials generated by acoustic and/or electrical and/or mechanical stimulation of the cochlear, or of a portion of the auditory system in man or animal. The implantable device for measuring or picking up auditory evoked potentials comprises at least two extracochlear pickup electrodes connected to the inputs of a differential amplifier.

Abstract: The present invention relates to a device for picking up biological electrical signals, and more precisely auditory evoked potentials generated by acoustic and/or electrical and/or mechanical stimulation of the cochlea, or of a portion of the auditory system in man or animal. The device for measuring or picking up auditory evoked potentials is surgically implantable in the temporo-occipital area and comprises at least two extracochlear pickup electrodes connected to the inputs of a differential amplifier.

Abstract: A catheter for administering medication into the endolymphatic sacs of the cochlea of the inner ear in humans, through at least one membrane of the inner ear. The catheter is designed with at least one outflow aperture at one end for the medication being administered and with an anchoring element. A medication dosage system can be connected to the other end of the catheter. The outflow aperture can be fed through the membrane of the inner ear and the anchoring element is designed so that it can anchor itself against this membrane.

Abstract: A catheter for administering medication into the endolymphatic sacs of the cochlea of the inner ear in humans, through at least one membrane of the inner ear. The catheter is designed with at least one outflow aperture at one end for the medication being administered and with an anchoring element. A medication dosage system can be connected to the other end of the catheter. The outflow aperture can be fed through the membrane of the inner ear and the anchoring element is designed so that it can anchor itself against this membrane.

Abstract: An implantable receiver (12) is powered and controlled by an external (not-implanted) transmitter (14) when a transmitter coil (22) is properly aligned with a receiver coil (20). No magnets are used in either the transmitter or receiver to achieve and maintain the needed alignment. Rather, a special set of implant tools (50) are used to assure that alignment is achieved and maintained between the implantable receiver (12) and external transmitter (14) when the implant operation is carried out. A preferred embodiment of the invention provides a magnetless implantable cochlear stimulator (ICS) (40) and a corresponding magnetless headpiece (30) worn behind the ear.