Patents by Inventor Richard E. Crass

Richard E. Crass 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).

  • Intravenous medication harm index system
    Patent number: 7657443
    Abstract: A system and method for assessing the severity of medication errors associated with intravenous administration is provided. A harm index database includes harm index values for various parameters of medication administration. A medication administration device may access this database and assess the overall harm index for particular errors in order to provide appropriate alerts based on the severity of the error. Further, assessment of the harm index value may be used retrospectively to provide reports of event logs that include an overall harm index value associated with each alert.
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: February 2, 2010
    Assignee: CareFusion 303, Inc.
    Inventors: Richard E. Crass, Timothy W. Vanderveen
  • Self priming tubing set for an infusion device
    Patent number: 5419770
    Abstract: A self priming tubing set for infusing a medical solution from an infusion device to a patient includes a supply tube, an air/particle filter, and a restrictor tube. The air/particle filter is adapted to remove air, particularly air contained in the supply tube at the initiation of fluid flow. The air/particle filter also removes particles from the medical solution. The restrictor tube is adapted to reduce the pressure of the medical solution from the delivery pressure of the infusion device to about a mean venous pressure of the patient. The length and inside diameter of the restrictor tube are calibrated to achieve a desired pressure drop dependent on design criteria of the system. The tubing set also includes a slide clamp for closing fluid flow from the supply tube and a connector for connection to a patient interface such as a hypodermic needle or cannula.
    Type: Grant
    Filed: January 12, 1994
    Date of Patent: May 30, 1995
    Assignee: Imed Corporation
    Inventors: Richard E. Crass, John S. Thompson
  • Self priming tubing set for an infusion device
    Patent number: 5290238
    Abstract: A self priming tubing set for infusing a medical solution from an infusion device to a patient includes a supply tube, an air/particle filter, and a restrictor tube. The air/particle filter is adapted to remove air, particularly air contained in the supply tube at the initiation of fluid flow. The air/particle filter also removes particles from the medical solution. The restrictor tube is adapted to reduce the pressure of the medical solution from the delivery pressure of the infusion device to about a mean venous pressure of the patient. The length and inside diameter of the restrictor tube are calibrated to achieve a desired pressure drop dependent on design criteria of the system. The tubing set also includes a slide clamp for closing fluid flow from the supply tube and a connector for connection to a patient interface such as a hypodermic needle or cannula.
    Type: Grant
    Filed: June 10, 1992
    Date of Patent: March 1, 1994
    Assignee: Imed Corporation
    Inventors: Richard E. Crass, John S. Thompson