Drug delivery device with integrated extendable/retractable information display element

An injection drug delivery device for dispensing of a dose of a medicinal product, comprising:

• a housing having at least one housing component,
• a holder for a cartridge, the cartridge comprising the medicinal product,
• a dose dispensing mechanism operably engaged with the cartridge for setting and/or dispensing of a predefined dose of the medicinal product, wherein the housing component serves as a housing for the dose dispensing mechanism, and
• a spring biased display element movably disposed inside the at least one housing component,
• an inner sleeve coupled to a helical spring and rotatably mounted in the housing component,
• wherein the display element comprises a fixing element,
• wherein the inner sleeve comprises a longitudinal slit adapted to receive the fixing element of the display element, and wherein the fixing element is larger in size than the longitudinal slit,
• wherein the display element is moveable for selectively concealing and/or revealing information provided on the display element as the display element is moved into and out of the housing component,
• wherein the display is rolled up on the inner sleeve, and wherein the inner sleeve is configured to surround at least a portion of the dose dispensing mechanism.