Patents by Inventor Robert H. Moorehead

Robert H. Moorehead 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: 5201722
    Abstract: A novel cardiovascular outdwelling, normally closed, pressure-responsive slit valve liquid flow control and related methods wherein a diaphragm having a slit therein is flexed distally by hydrostatic pressure and proximally by negative pressure at different points in time to selectively open the slit and accommodate the flow of IV solution to a medical patient through a cannula and blood sampling from the cardiovascular system of the patient through the cannula in such a way as to prevent bleed-back and clotting of blood within the cannula.
    Type: Grant
    Filed: September 4, 1990
    Date of Patent: April 13, 1993
    Inventors: Robert H. Moorehead, Thomas A. Wiita