Patent ID: 9533098
Date: 2017-01-03
CPC Classifications: A61M

Claim:
1. An injection device for the needle-free injection of a medium, the injection device comprising: a basic body holding the medium to be injected; a driving member; a driving element for driving the driving member to expel the medium from the basic body and for injecting the medium; a triggering device associated with the driving element to enable expulsion of the medium; a nozzle having a nozzle outlet opening through which the medium is expelled during an intradermal injection; an enclosure enclosing at least a portion of the injection device; a sleeve which encloses the nozzle, and wherein the sleeve has a first section which narrows towards an outlet thereof and is followed in a direction of the outlet by a second section, in which an outer threading is formed, and the second section is followed in the direction of the outlet by a third section in which the outer diameter of the sleeve is narrowed; and a nozzle attachment through which the medium flows to intradermally inject the medium, the nozzle attachment including an outer peripheral edge that extends beyond the nozzle outlet opening of the nozzle in a direction of the longitudinal axis of the injection device and parallel to the nozzle outlet opening, the outer peripheral edge being centered about the nozzle outlet opening of the nozzle and spacing the nozzle outlet opening from a surface of an injection site to assist in forming a wheal with a defined intradermal spread centered about a point of entry of the intradermal injection.