Patents by Inventor Leonard C. Ducharme

Leonard C. Ducharme 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).

  • Catheter with needle guard
    Patent number: 5000740
    Abstract: A catheter device is described with a safety needle guard that covers and protects the needle after use of the device. The device includes a semi-tubular needle housing containing a flash chamber with a hollow needle extending from the distal end of the flash chamber. A tubular needle guard concentrically fits and slides within the needle housing. The needle guard has a longitudinal slot through which the mounting base of the flash chamber passes as the guard slides within the housing. The top of the semi-tubular housing is open so that a user may access the top of the tubular needle guard with a finger to urge the needle guard to an extended position from the distal end of the housing and in a surrounding position about the needle. As the needle guard attains its fully extended position about the needle, it locks in place in the needle housing.
    Type: Grant
    Filed: April 10, 1989
    Date of Patent: March 19, 1991
    Assignee: Critikon, Inc.
    Inventors: Leonard C. Ducharme, Joseph J. Chang, Richard M. Bloom
  • Blood pressure monitor console
    Patent number: D340769
    Type: Grant
    Filed: August 12, 1991
    Date of Patent: October 26, 1993
    Assignee: Critikon, Inc.
    Inventors: Richard M. Bloom, Daryl Bordon, Leonard C. Ducharme, Alan R. Hails, John M. Hanke, Alexander Winkler, Matthew Martin, Bruce A. Friedman