Patents Assigned to Arzheimittel GmbH Apotheker Vetter & Co. Ravensburg
  • Hypodermic syringe
    Patent number: 4874381
    Abstract: A two-compartment syringe having a bypass through which the liquid can be forced into the medicament compartment by advance of the piston connected to the stem, has a brake retarding the displacement of this piston until it reaches the bypass to prevent undesired discharge of the injectable substance from the syringe. Once the latter piston has reached the bypass, the stem can be axially displaced independently of a braking action by the damping means for normal injection.
    Type: Grant
    Filed: June 24, 1988
    Date of Patent: October 17, 1989
    Assignee: Arzheimittel GmbH Apotheker Vetter & Co. Ravensburg
    Inventor: Udo J. Vetter