Iontophoretic intra-tympanic drug delivery system

Details Iontophoretic intra-tympanic drug delivery system Iontophoretic intra-tympanic drug delivery system

2008-01-30

2010-11-23

Sirmons, Kevin C (Department: 3767)

Surgery

Means for introducing or removing material from body for...

Infrared, visible light, ultraviolet, x-ray or electrical...

C606S109000

Reexamination Certificate

active

07840260

ABSTRACT:
A system, method, and apparatus for iontophoretically delivering medically-active ions beyond the tympanic membrane, into a middle ear portion of a patient, and to an area or structure of the middle or inner ear that is targeted for treatment. The system and apparatus can include a needle configured partially for insertion through a tympanic membrane and having a longitudinal bore, a flexible lumen coupled with the needle, and typically a fluid source coupled with the lumen such that a fluid in the fluid source can be delivered from the fluid source, through the lumen and the needle, and into the middle ear. A positioning tab can be coupled with the needle to assist determining a proper insertion extent of the needle through the membrane. The system and method can also include a power source having oppositely charged electrodes, electrically-conductive materials coupled with an electrode and disposed within the fluid source, lumen, and/or needle, and electrically-conductive materials coupled with an oppositely-charged electrode and further coupled with the patient's skin. Medically-active ions are iontophoretically delivered by the apparatus, when the fluid is delivered to a patients middle ear and an electrical charge is imparted to the ions by the apparatus.

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