Patents by Inventor Robert J. Doiron

Robert J. Doiron 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).

  • Injectors, injector systems and injector control
    Publication number: 20030171712
    Abstract: An injector for use in injecting a fluid in a medical injection procedure includes a drive having a motor to pressurize the fluid; a sensor to provide a measure of fluid pressure; and a pressure monitor in communication with the sensor and the drive to stop the motor using 4-quadrant control when the sensor communicates a measured pressure of at least a pressure hazard limit. The pressure monitor also limits power input to the motor to a power limit once the sensor communicates a measured pressure of at least a power limiting pressure. The power limiting pressure is below the pressure hazard limit.
    Type: Application
    Filed: January 28, 2003
    Publication date: September 11, 2003
    Inventors: Richard G. Critchlow, Martin J. Uram, David A. Mishler, Richard A. Bates, Robert J. Doiron
  • Injectors, injector systems and injector control
    Patent number: 6520930
    Abstract: An injector for use in injecting a fluid in a medical injection procedure includes a drive having a motor to pressurize the fluid; a sensor to provide a measure of fluid pressure; and a pressure monitor in communication with the sensor and the drive to stop the motor using 4-quadrant control when the sensor communicates a measured pressure of at least a pressure hazard limit. The pressure monitor also limits power input to the motor to a power limit once the sensor communicates a measured pressure of at least a power limiting pressure. The power limiting pressure is below the pressure hazard limit.
    Type: Grant
    Filed: April 3, 2001
    Date of Patent: February 18, 2003
    Assignee: Medrad, Inc.
    Inventors: Richard G. Critchlow, Martin J. Uram, David A. Mishler, Richard A. Bates, Robert J. Doiron
  • Injectors, injector systems and injector control
    Publication number: 20020016569
    Abstract: An injector for use in injecting a fluid in a medical injection procedure includes a drive having a motor to pressurize the fluid; a sensor to provide a measure of fluid pressure; and a pressure monitor in communication with the sensor and the drive to stop the motor using 4-quadrant control when the sensor communicates a measured pressure of at least a pressure hazard limit. The pressure monitor also limits power input to the motor to a power limit once the sensor communicates a measured pressure of at least a power limiting pressure. The power limiting pressure is below the pressure hazard limit.
    Type: Application
    Filed: April 3, 2001
    Publication date: February 7, 2002
    Inventors: Richard G. Critchlow, Martin J. Uram, David A. Mishler, Richard A. Bates, Robert J. Doiron