Electrical bridge for medical use and method

A method of monitoring signals generated in an organ comprising connecting at least a pair of ionic conducting bridges to a body containing the organ, each bridge being comprised of an insulating tube filled with a liquid salt solution, a porous plug at one end of each tube touching the body, immersing opposite ends of the tubes in separate reservoirs containing liquid salt solutions, immersing one end of each wire of a corresponding at least a pair of metal wires into respective ones of the reservoirs, and connecting the other ends of the wires to an electrical signal monitoring device.

An ionic conductor comprising a long tube filled with thixotropic gel comprising a salt solution, a porous plug closing one end of the tube, a non-porous plug closing the other end of the tube, and a metal wire extending through the non-porous plug into the gel and having a free end outside the non-porous plug.

An electrical bridge for communicating signals to or from an organ or a patient comprising a non-porous, non-metallic, flexible tubular duct, an ionically conductive liquid contained in the duct for transmitting electrical signals by ion transfer and a non-metallic porous conductive plug at an end of the duct for electrically connecting to the organ or patient, wherein the duct is electrically connected to a metal cable in a junction, the junction comprising a container of ionically conductive liquid or gel into which an opposed and open end of the duct is inserted with one end of the metal cable.

A method transmitting electrical signals to or from an organ or a patient by means of an electrical bridge within the moving electromagnetic field of an MRI machine comprising providing a non-porous, non-metallic flexible tubular duct filled with a liquid fro transmitting electrical signals by ion transfer, and providing a non-metallic porous conductive plug at an end of the duct electrically connected to the organ or patient, wherein the liquid is a 4 molar KCl solution.

A method of transmitting electrical signals to or from an organ or a patient by means of an electrical bridge within the moving electromagnetic field of an MRI machine comprising providing a non-porous, non-metallic flexible tubular duct filled with an ionically conductive liquid for transmitting electrical signals by ion transfer, providing an electrical connection between the organ or patient and the liquid and providing an electrical connection from the liquid to a metal conductor by immersing the end of the duct and the conductor into an ionically conductive liquid or gel bath.

An electrical bridge for communicating signals to or from a patient comprising a non-porous, non-metallic, flexible tubular duct, an ionically conductive liquid contained in the duct for transmitting electrical signals by ion transfer and means at an end of the duct for providing an electrical connection between the patient and the liquid, wherein the duct is connected to a metal cable in a junction, the junction comprising a container of ionically conductive liquid or gel into which an opposed and open end of the duct is inserted with one end of the metal cable, and wherein the means for providing an electrical connection between the patient and the liquid comprises a cup or well attached to the flexible duct, adapted to be attached by an adhesive means to the patient, and containing the ionically conducive liquid in contact with the patient.