Patents by Inventor Donald W. Heyda

Donald W. Heyda 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).

  • Patent number: 4366820
    Abstract: A method and apparatus for composing a reference heart beat by synchonously summing heart beat signals detected by a high resolution radioactivity distribution detection system for non-invasive measurement of cardiac performance. A plurality of sensing devices form an array for detecting radioactive events emitted from a heart under study. A processor sums heart beat images of a continuous series of detected events and generates a reference heart beat by synchronizing the regrouping of the beat images as a function of the peaks at volumetric end diastole and the image troughs at volumetric end systole. The reference heart beat represents a statistical standard heart beat for the heart under study and defines a base signal for quantative measurements and qualitative analysis of the condition of the subject heart.
    Type: Grant
    Filed: June 23, 1980
    Date of Patent: January 4, 1983
    Assignee: Baird Corporation
    Inventors: Donald W. Heyda, Richard P. Corley, Rosalind Sinclair