Patents by Inventor Benjamin B. Lai

Benjamin B. Lai 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 for reducing purge volume in a blood chemistry monitoring system
    Patent number: 5947911
    Abstract: A method and apparatus for reducing the volume of fluid required to purge a patient's blood from a blood sampling site after the blood has been sampled for measurement. A coil is formed in the fluid flow line between the source of fluid and the blood sampling site by looping the fluid flow line around on itself in order to generate turbulence in the fluid flow to help purge the patient's blood from the blood sampling site after sampling. This turbulence-inducing coil is conveniently formed in a fluid flow line extending from the upstream end of a blood chemistry sensor module which is adapted to be installed in the fluid flow line of a standard IV infusion set as part of a combined infusion fluid delivery and blood chemistry monitoring system.
    Type: Grant
    Filed: January 9, 1997
    Date of Patent: September 7, 1999
    Assignee: Via Medical Corporation
    Inventors: David K. Wong, Benjamin B. Lai