Novo Nordisk A/s

Mie Haraldsted

Matias Melander

Christian Hoejris Nielsen

Roshan Hakkim

Morten Revsgaard Frederiksen

Graham Hinde

Bas Kamp

Christian Højris Nielsen

The invention relates to an injection device for injecting a liquid drug. The injection device comprises a housing assembly supporting a non-removable cartridge having an interior chamber containing the liquid drug to be injected and a reusable needle cannula connected to the cartridge. A needle shield assembly provided with a cleaning chamber containing a volume of a cleaning agent for cleaning at least the distal tip of the needle cannula between subsequent injections is further provided. The needle shield assembly is axially movable in a proximal direction in relation to the housing assembly from a first position to a second position upon rotation of at least a part of the needle shield assembly, wherein the first position is a position in which the distal tip of the needle cannula is located inside the cleaning chamber thereby cleansing the distal tip of the needle cannula, and the second position is a position in which the distal tip of the needle cannula is located outside and distal to the cleaning chamber for equalizing the pressure in the cartridge.

Medical injection device with a cleaning chamber

Disclosed is a medical injection device () comprising a needle assembly () having a cannula () and a telescopic shield () for covering the distal tip () in a no use situation. The telescopic shield further carries a cleaning reservoir () for cleaning the needle cannula between two subsequent injections. The cleaning reservoir is provided with an opening () connecting to an overflow reservoir () such that the cleaning liquid contained in the cleaning reservoir can retract and expand upon temperature changes and does not enter the needle lumen instead. In one example, the overflow reservoir is formed as a channel ().

Pen-type drug injection device having multiple-use needle module with needle cleaning reservoir

Growing community of inventors

Helsingoer, Denmark

Mie Haraldsted