Injection device

Abstract

Abstract Injection devices are already known with a plunger (6) longitudinally displaceable in a plunger guide (5) and with an adjustable working stroke (14), in which devices an ampoule housing (3) containing a cannula-securing device (1) is releasably connected to the plunger guide (5). These devices however have the disadvantage that the quantity to be injected must always be adjusted anew, which results in a risk of incorrect adjustments. In order to provide an injection device in which an adjustment once made can be retained, the plunger (6) consists of two longitudinal parts (8, 9) connected so as to be displaceable and lockable relative to one another, this device preferably comprising a hollow plunger (8) and a plunger rod (9) mounted in a threaded part (10) thereof. <IMAGE>

Inventors

• 👤 Klaus Nothdurft

Bibliographic Details