Patents by Inventor Peter S. Colley

Peter S. Colley 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).

  • Intravascular catheter including untrasonic transducer for use in detection and aspiration of air emboli
    Patent number: 4354502
    Abstract: A system for detecting and quantifying air emboli in blood vessels which uses either an intravascular catheter 22 or an esophageal catheter 50. In a preferred embodiment, the intravascular catheter includes an elongated cylindrical tube of flexible material, the tube having a tip 22A and having formed therein an axial aspiration lumen 26 and a second axial lumen 28. An ultrasonic transducer 24, comprising an annular, cylindrical ring of piezoelectric material, is fitted over and secured to the tube adjacent its tip. A microcaxial cable passes through lumen 28 and is electrically interconnected with the ultrasonic transducer. In a preferred embodiment, the esophageal catheter includes a substantially cylindrical member 54 on which is fitted an ultrasonic transducer 52 comprising an annular, cylindrical ring of piezoelectric material.
    Type: Grant
    Filed: December 3, 1980
    Date of Patent: October 19, 1982
    Assignee: The Board of Regents of the University of Washington
    Inventors: Peter S. Colley, Roy W. Martin
  • Method for detecting air emboli in the blood in an intracorporeal blood vessel
    Patent number: 4319580
    Abstract: A system for detecting and quantifying air emboli in blood vessels which uses either an intravascular catheter 22 or an esophageal catheter 50. In a preferred embodiment, the intravascular catheter includes an elongated cylindrical tube of flexible material, the tube having a tip 22A and having formed therein an axial aspiration lumen 26 and a second axial lumen 28. An ultrasonic transducer 24, comprising an annular, cylindrical ring of piezoelectric material, is fitted over and secured to the tube adjacent its tip. A microcoaxial cable passes through lumen 28 and is electrically interconnected with the ultrasonic transducer. In a preferred embodiment, the esophageal catheter includes a substantially cylindrical member 54 on which is fitted an ultrasonic transducer 52 comprising an annular, cylindrical ring of piezoelectric material.
    Type: Grant
    Filed: August 28, 1979
    Date of Patent: March 16, 1982
    Assignee: The Board of Regents of the University of Washington
    Inventors: Peter S. Colley, Roy W. Martin