Bayer Pharma Aktiengesellschaft

Dieter Hölze Technik-Projekte Gmbh

Dieter Hoelze Technik-Projekte Gmbh

Dieter Holzle Technik-Projekte Gmbh

Andreas Renz

Wilfried Weber

Dariusz Petry

An injection device including a carrier housing in which an injection unit having at least one injection liquid container that can be pressed out can be inserted, and an actuating device which can be driven along an injection direction (R) to activate the injection unit. The actuating device includes a piercing carriage a receptacle for the injection unit, and an injection carriage which can be displaced relative to the piercing carriage. The injection carriage has an actuating plunger for acting on a plunger of the injection unit. The piercing carriage and the injection carriage can be actuated by a force application means at least in order to carry out a piercing stroke and an injection stroke, and a piercing depth (tE) of the injection unit can be set. For this purpose, the receptacle is mounted on the piercing carriage adjustably in the injection direction (R).

Setting of piercing depth

An injection device () comprises a housing () in which a receiving chamber () is provided for an injection mechanism () having an injection fluid container () that can be pressed out by means of an injection plunger (). The injection device () further comprises an actuating device () that can be driven for automatically pressing out the injection fluid container (), wherein said actuating device can be displaced between an insertion/removal position outside of the receiving chamber () and an injection position within the receiving chamber (), wherein the actuating device () is spaced by a release distance (d) from the receiving chamber () in the insertion/removal position. A contact mechanism () is provided, by means of which the actuating device () can be brought into a stop position in which an actuating stop () of the actuating device () contacts the injection plunger () and in which an injection volume adjustment () is automatically actuated.

Injection device having injection volume adjustment

An injection apparatus () has a carrier housing (), into which an injection device () having at least one injection fluid container () that can be pressed out can be inserted, and an actuating apparatus () which can be driven along an injection direction (R) in order to activate the injection device () and which can be acted on for performing at least one pricking stroke and one injection stroke by a mechanical energy storage unit () and an electrical transport unit (). The invention provides for the actuating apparatus () to be driven in the injection direction (R) by the driving force of a mechanical energy storage unit () and for the electrical transport unit () to form a speed limiter which acts counter to the driving force during an injection, in order to limit a stroke speed attained via the energy storage unit.

Growing community of inventors

Sulz, Germany

Andreas Renz