Patents by Inventor Byron W. Larson

Byron W. Larson 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).

  • Technique for disinfecting extracorporeal fluid treatment systems
    Patent number: 5733457
    Abstract: An extracorporeal fluid treatment apparatus which is selectively operable in a disinfecting mode or a treatment mode includes an inlet line, a pre-treatment portion, an input pump, a heater, an input shunt, a filtration device, a post-treatment portion, a drain line and an output shunt. The apparatus also includes a combination of valves which are selectively positionable in disinfecting mode to create an input fluid circuit which includes the pre-treatment portion and the input shunt, and which is in fluid isolation from the post-treatment portion and from the filtration device. In disinfecting mode, the valves are also selectively positionable to create an output fluid circuit which includes the post-treatment portion and the output shunt, and which is in fluid isolation from the pre-treatment portion and from the filtration device.
    Type: Grant
    Filed: December 5, 1996
    Date of Patent: March 31, 1998
    Assignee: COBE Labortories, Inc.
    Inventors: Roy S. Hovland, Byron W. Larson, Jo-Ann B. Maltais
  • Extracorporeal fluid treatment systems selectively operable in a treatment mode or a disinfecting mode
    Patent number: 5647984
    Abstract: An extracorporeal fluid treatment apparatus which is selectively operable in a disinfecting mode or a treatment mode includes an inlet line, a pre-treatment portion, an input pump, a heater, an input shunt, a filtration device, a post-treatment portion, a drain line and an output shunt. The apparatus also includes a combination of valves which are selectively positionable in disinfecting mode to create an input fluid circuit which includes the pre-treatment portion and the input shunt, and which is in fluid isolation from the post-treatment portion and from the filtration device. In disinfecting mode, the valves are also selectively positionable to create an output fluid circuit which includes the post-treatment portion and the output shunt, and which is in fluid isolation from the pre-treatment portion and from the filtration device.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: July 15, 1997
    Assignee: COBE Laboratories, Inc.
    Inventors: Roy S. Hovland, Byron W. Larson, Jo-Ann B. Maltais
  • Method and apparatus for detection of air bubbles in tubing
    Patent number: 5205153
    Abstract: A method and apparatus for assisting in the detection of bubbles in a fluid stream such as an intravascular line. Tubing having ribbing or other texturing spaced along the longitudinal axis to enhance signal transmission characteristics and to increase the number of signals intercepted by a passing bubble, is placed between an ultrasonic or other transmitter and detector. In other embodiments, bubbles are concentrated into a detection zone by a centrifugator or are concentrated and recirculated in a detection zone by an eddy-producing protrusion in the fluid stream.
    Type: Grant
    Filed: January 23, 1992
    Date of Patent: April 27, 1993
    Assignee: COBE Laboratories, Inc.
    Inventors: Dennis J. Hlavinka, Byron W. Larson