Patents by Inventor John G. Keimel

John G. Keimel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Medical electrode lead
    Patent number: 5016645
    Abstract: A medical electrode lead employing one or more elongated electrode coils embedded in the surface of a flexible base pad. The electrode coils take the form of space wound coils following tortuous paths over the surface of the base pad to provide a large surface area electrode. The electrode coils include a plurality of spaced, generally parallel electrode coil segments. Located intermediate adjacent the parallel electrode coil segments are grooves or pleats, molded into the base pad. These grooves or pleats provide increased elasticity of the electrode and increased ability to conform to the contours of the heart. Insulative cores taking the form of plastic tubes are located within the electrode coils to prevent tissue ingrowth between the individual electrode coils, without induly reducing flexibility of the electrode.
    Type: Grant
    Filed: October 31, 1988
    Date of Patent: May 21, 1991
    Inventors: Terrell Williams, John G. Keimel, Roger Rugland, Richard Sandstrom, Timothy Holleman
  • Cardiac pacemaker synchronized programming
    Patent number: 4553547
    Abstract: The programming of pulse intervals and the inhibition of the output of an implanted cardiac pacemaker are disclosed. The occurrence of either an output pulse from the implanted unit or of cardiac activity allows for synchronization of the programming unit with the implanted device so the external programmer can control the pulse timing sequence of the implanted unit. The implanted unit can be programmed after each pulse, or as required, to obtain a pulse sequence which may be used to provoke, or terminate, tachyarrhythmias, thus enabling non-invasive electrophysiologic studies, or therapeutic stimulation.
    Type: Grant
    Filed: July 25, 1984
    Date of Patent: November 19, 1985
    Assignee: Medtronic, Inc.
    Inventor: John G. Keimel
  • Cardiac pacemaker synchronized programming
    Patent number: 4515160
    Abstract: The programming of pulse intervals and the inhibition of the output of an implanted cardiac pacemaker are disclosed. The occurence of either an output pulse from the implanted unit or of cardiac activity allows for synchronization of the programming unit with the implanted device so the external programmer can control the pulse timing sequence of the implanted unit. The implanted unit can be programmed after each pulse, or as required, to obtain a pulse sequence which may be used to provoke, or terminate, tachyarrhythmics thus enabling non-invasive electrophysiologic studies, or therapeutic stimulation.
    Type: Grant
    Filed: April 23, 1982
    Date of Patent: May 7, 1985
    Assignee: Medtronic, Inc.
    Inventor: John G. Keimel