Novo Nordisk A/s

Kurt Solgaard

Bjoern Gullak Larsen

Bo Radmer

Morten Revsgaard Frederiksen

Lars Eilertsen

Simon Munch Pedersen

Martin Johst Christensen

Mattias Ingerslev

Ruben Archilla

Carsten Soerensen

Christoffer Busk Stormoen

Thomas Olund Christensen

Rasmus Kann Jensen

Rubén Archilla

Carsten SØRENSEN

The invention relates to an injection device comprising an End-of-Content mechanism. The End-of-Content mechanism comprises a piston rod () being driven forward by a rotatable piston rod guide (), a driver () attached to a dose setting tube () and an End-of-Content tube (). The End-of-Content tube is moved axially forward during dose setting a distance which correlates to the size of the dose being set. When the accumulated set and ejected dose equals the injectable amount initially available in the cartridge (), the End-of-Content tube engages a lock mechanism provided in the piston rod guide and the driver engages a stop surface on the End-of-Content tube. Once the End-of-Content mechanism is locked, no further dose can be set and the piston rod guide cannot be rotated. In order to provide a proper engagement between the piston rod guide and the driver, the End-of-Content mechanism is released during dose expelling.

Prefilled injection device with cleaning chamber

The invention relates to an injection system or a needle assembly in which a needle cannula secured to an injection device is shielded by a axially movable needle shield. Should the needle cannula be exposed to a force above a predetermined value e.g. if a user drops the injection device onto a hard surface, a locking mechanism will automatically lock and block further movement of the axially movable needle shield and thus render the injection device unusable.

Shielded needle cannula

The invention relates to a prefilled injection pen for apportioning multiple set doses of a liquid drug. The injection pen comprises a housing assembly with a removable cap rotatable coupled to the housing assembly such that the user has to rotate the removable cap upon mounting and dismounting the removable cap. Rotation of the removable cap initiates a process in which the proximal end of a needle cannula is first inserted into a cartridge permanently embedded in the housing assembly and thereafter moves the cartridge proximally to thereby pump a predetermined amount of the preservative containing liquid drug from the cartridge and into a cleaning chamber carried by an axially movable shield. The needle cannula is mounted in a needle hub which is arranged to follow rotation of the removable cap and guided helically in relation to the housing assembly such that the needle hub is moved proximally upon rotation of the removable cap. Further, the axially movable shield is operated by the needle hub to follow proximal movement of the needle hub such that the distal tip of the needle cannula is maintained inside the cleaning chamber upon axil movement of the needle hub and the needle cannula.

Medical injection device with needle cleaning

Growing community of inventors

Graested, Denmark

Kurt Solgaard