Patents by Inventor Mark J. Burzynski

Mark J. Burzynski 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).

  • Self-blunting needle medical devices and methods of manufacture thereof
    Patent number: 6254574
    Abstract: A self-blunting needle medical device comprises a needle cannula (18) fixed to a hub (20) having a receiving structure therein such as ferrule (22) and a movable blunting member (14) movably received within the cannula (18). Ferrule (22) defines a passage (38) extending therethrough, within which both the cannula (18) and the movable member (14) can be received and which establishes a coaxial relationship between them. The ferrule (22) defines a first guide surface (40) for directing the blunting end (14a) of the movable member (14) into the central bore of the cannula (18) during assembly. A second guide surface (42) performs the function of guiding the mounting end (18b) of the cannula (18) into ferrule (22) for mounting therein. Typically, the cannula (18) has a tissue puncture tip (18a). When the movable member (14) is retracted into the cannula (18), the puncture tip (18a) is exposed for use, e.g., injection into tissue.
    Type: Grant
    Filed: July 23, 1999
    Date of Patent: July 3, 2001
    Assignee: Bio-Plexus, Inc.
    Inventors: Mark J. Burzynski, Alexander K. Jones, Richard S. Kearns, John M. Polidoro, Carl R. Sahi, Chad C. Smutney
  • Self-blunting needle medical devices and methods of manufacture thereof
    Patent number: 5951520
    Abstract: A self-blunting needle medical device comprises a needle cannula (18) fixed to a hub (20) having a receiving structure therein such as ferrule (22) and a movable blunting member (14) movably received within the cannula (18). Ferrule (22) defines a sleeve bore (38) extending therethrough, within which both the cannula (18) and the movable member (14) can be received and which establishes a coaxial relationship between them. The ferrule (22) defines a first guide surface (40) for directing the blunting end (14a) of the movable member (14) into the central bore of the cannula (18) during assembly. A second guide surface (42) performs the function of guiding the proximal end (18b) of the cannula (18) into ferrule (22) for mounting therein. Typically, the cannula (18) has a tissue puncture tip (18a). When the movable member (14) is retracted into the cannula (18), the puncture tip (18a) is exposed for use, e.g., injection into tissue.
    Type: Grant
    Filed: December 19, 1996
    Date of Patent: September 14, 1999
    Assignee: Bio-Plexus, Inc.
    Inventors: Mark J. Burzynski, Alexander K. Jones, Richard S. Kearns, John M. Polidoro, Carl R. Sahi, Chad C. Smutney