Iontophoretic structure for medical devices
November 12, 2012. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMethod of using electrodes having antiseptic properties for LIDC therapy Method of in vivo sterilization of surgical implantables Oligodynamic catheter Material and method for introducing ionic silver to dental pulp Method of inhibiting mastitis in bovine animals Tissue growth control apparatus and method Iontophoretic catheter device Iontophoresis device Antimicrobial surgical implants Catheter InventorAssigneeApplicationNo. 975597 filed on 11/12/1992US Classes:604/265, With body soluble, antibactericidal or lubricating materials on conduit604/20, Infrared, visible light, ultraviolet, X-ray or electrical energy applied to body (e.g., iontophoresis, etc.)604/21With tubular injection means inserted into bodyExaminersPrimary: Yasko, John D.Assistant: Alexander, Vanitha Attorney, Agent or FirmForeign Patent References
International ClassA61M 005/32AbstractAn iontophoretic structure for medical devices is provided that uses controlled electrical current derived from two dissimilar galvanic materials to drive oligodynamic metal ions into solution to kill bacteria on and near the device to which the structure is affixed. In one embodiment, a first galvanic material separated from a second galvanic material by a resistive material produces an anti-bacterial current flow when placed in contact with an electrolytic fluid. In another embodiment, a cylindrical elastomeric catheter incorporates a first and a second galvanic material separated by a resistive material which controls a current flow between the galvanic materials when the catheter is immersed in an electrolytic fluid. The galvanic materials can be dissimilar metal powders embedded in a conductive polymer substrate that forms an iontophoretic composite material, or dissimilar metals arranged in layers separated by a resistive layer. In yet another embodiment, the iontophoretic composite material is configured as an infection control sleeve that covers a portion of an ordinary catheter or cannula. Methods of protecting implantable medical devices and body structures with the iontophoretic structures are also provided.Other References
Field of SearchWith body soluble, antibactericidal or lubricating materials on conduitInfrared, visible light, ultraviolet, X-ray or electrical energy applied to body (e.g., iontophoresis, etc.) With tubular injection means inserted into body DEVICES TRANSFERRING FLUIDS FROM WITHIN ONE AREA OF BODY TO ANOTHER (E.G., SHUNTS, ETC.) With anticlogging means on conduit (e.g., anticlotting, decalcification, tissue occulsion, etc.) Material introduced into and removed from body through passage in body inserted means Injection or aspiration device having plural body entering conduits Means for holding applicator against body tissue Flexible sheet or resilient pad Means for wetting applicator-body interface Catheter or endocardial (inside heart) type | |
