Patents by Inventor Kathryn Margaret Duesman

Kathryn Margaret Duesman 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).

  • IV catheter introducer
    Patent number: 8048031
    Abstract: An IV catheter introducer having an elastomeric grommet disposed between the housing and the IV catheter assembly that helps avoid unintentional separation of IV catheter assembly from the housing during shipping and handling prior to use, that acts as a needle guide, that helps align the housing and IV catheter assembly coaxially, that indicates that top side of the catheter introducer, that provides proper rotational alignment between the grommet and housing, that wipes blood off the needle during withdrawal of the needle from the catheter assembly and grommet, that impedes blood flow out of the catheter hub after needle withdrawal, and that assists the user in separating the housing from the IV catheter assembly following insertion of the catheter and withdrawal of the needle.
    Type: Grant
    Filed: May 12, 2009
    Date of Patent: November 1, 2011
    Assignee: Retractable Technologies, Inc.
    Inventors: Thomas J. Shaw, Ni Zhu, Kathryn Margaret Duesman
  • Catheter Introducer with Hub Seal and Removal Tab
    Publication number: 20110125097
    Abstract: A catheter introducer having a catheter hub seal that is engageable with the rear opening of the catheter hub to impede liquid flow out of the catheter hub following catheter insertion and subsequent withdrawal of the needle following separation of the housing from the catheter hub. The catheter hub seal is preferably made of a rubbery material and can be disposed between the housing and catheter assembly or can be attachable to the catheter assembly.
    Type: Application
    Filed: November 24, 2009
    Publication date: May 26, 2011
    Inventors: Thomas J. Shaw, Ni Zhu, Kathryn Margaret Duesman
  • IV Catheter Introducer
    Publication number: 20100168674
    Abstract: An IV catheter introducer having an elastomeric grommet disposed between the housing and the IV catheter assembly that helps avoid unintentional separation of IV catheter assembly from the housing during shipping and handling prior to use, that acts as a needle guide, that helps align the housing and IV catheter assembly coaxially, that indicates that top side of the catheter introducer, that provides proper rotational alignment between the grommet and housing, that wipes blood off the needle during withdrawal of the needle from the catheter assembly and grommet, that impedes blood flow out of the catheter hub after needle withdrawal, and that assists the user in separating the housing from the IV catheter assembly following insertion of the catheter and withdrawal of the needle.
    Type: Application
    Filed: May 12, 2009
    Publication date: July 1, 2010
    Inventors: Thomas J. Shaw, Ni Zhu, Kathryn Margaret Duesman