Patents by Inventor Peter K. Osborn

Peter K. Osborn 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).

  • Method and apparatus to correct for electric field non-uniformity in conductance catheter volumetry
    Patent number: 5971933
    Abstract: A method of determining cardiac volume including the steps of positioning a catheter in a blood-filled chamber of a patient's heart. The catheter comprises an elongated body having a distal end, a proximal end, a plurality of spaced electrodes arrayed on the outer surface of the catheter and spaced apart a predetermined distance from each other to define a distal electrode, a proximal electrode and a plurality of pairs of adjacent electrodes between the distal and proximal electrodes to define volume segments within the chamber.
    Type: Grant
    Filed: August 27, 1997
    Date of Patent: October 26, 1999
    Assignees: Cleveland Clinic Foundation, Marquette Medical Systems
    Inventors: Balakrishnan Gopakumaran, John H. Petre, Peter K. Osborn, Paul Schluter
  • Method and apparatus to correct for electric current leakage in conductance volumetry
    Patent number: 5882312
    Abstract: A method of determining cardiac volume including the steps of positioning a catheter output including the steps of positioning a catheter in a blood-filled chamber of a patient's heart. The catheter comprises an elongated body having a distal end, a proximal end and a plurality of spaced apart electrodes arrayed on the outer surface of the catheter. The electrodes are spaced apart a predetermined distance from each other to define a distal electrode, a proximal electrode and a plurality of pairs of adjacent electrodes between the distal and proximal electrodes to define volume segments within the chamber.
    Type: Grant
    Filed: August 27, 1997
    Date of Patent: March 16, 1999
    Assignees: Cleveland Clinic Foundation, Marquette Medical Systems, Inc.
    Inventors: Balakrishnan Gopakumaran, John H. Petre, Peter K. Osborn, Paul Schluter
  • Apparatus for determining the conductivity of blood
    Patent number: 5842998
    Abstract: An in vivo apparatus for determining the absolute conductivity of a liquid such as human blood, including the steps of determining a location in a ventricle of a patient's heart at which blood conductivity may be measured effectively, positioning a catheter having a plurality of spaced electrodes in the ventricle such that at least a pair of adjacent electrodes are positioned at the location, applying a current of known magnitude to the adjacent electrodes, measuring the voltage between the adjacent electrodes, and determining the conductivity of the patient's blood from the known current and measured voltage.
    Type: Grant
    Filed: April 16, 1997
    Date of Patent: December 1, 1998
    Assignees: Cleveland Clinic Foundation, Marquette Medical Systems
    Inventors: Balakrishnan Gopakumaran, Peter K. Osborn, John H. Petre
  • Method of determining the conductivity of blood
    Patent number: 5827192
    Abstract: An in vivo method of determining the conductivity of a liquid such as human blood, including the steps of determining a location in a ventricle of a patient's heart at which blood conductivity may be measured effectively, positioning a catheter having a plurality of spaced electrodes in the ventricle such that at least a pair of adjacent electrodes are positioned at the location, applying a current of known magnitude to the adjacent electrodes, measuring the voltage between the adjacent electrodes, and determining the conductivity of the patient's blood from the known current and measured voltage.
    Type: Grant
    Filed: August 21, 1996
    Date of Patent: October 27, 1998
    Assignees: Cleveland Clinic Foundation, Marquette Medical Systems
    Inventors: Balakrishnan Gopakumaran, Peter K. Osborn, John H. Petre