Patents Assigned to The MadTech Group, Inc.
  • Patent number: 4986813
    Abstract: A retractable hypodermic needle & syringe article comprising barrel means comprising means to receive and removably restrain a hypodermic needle-containing assembly for dispensing liquids, plunger means to force the liquids through the needle and a hypodermic needle-containing hub adapted to be removably held at the distal end of the barrel said plunger and hub comprising complementary means to engage, after final use of the article, and retract said hypodermic needle-containing hub into the barrel from which is cannot be reextended for further use wherein the plunger further comprises means to cause the needle-containing hub to assume an angled position relative to the longitudinal axis of the plunger when the hub has been retracted into the barrel.
    Type: Grant
    Filed: January 12, 1989
    Date of Patent: January 22, 1991
    Assignee: The MadTech Group, Inc.
    Inventors: Joseph W. Blake, III, Thomas E. Sloane, Jr.