Novo Nordisk A/s

Carsten Soerensen

Bo Radmer

Michael Ejstrup Hansen

Simon Roervig

Simon Munch Pedersen

Bjoern Gullak Larsen

Martin Johst Christensen

Roger Harrington

Sara Juana Niemann

Kurt Solgaard

Nikolai Byskov

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 a non-axial working End-of-Content mechanism which is geared by a hypocycloid gearing. The EoC mechanism comprises a first element () having a first internal surface () with a first internal diameter (D), and an EoC element () having a second external surface () with a second external diameter (d) being smaller that the first internal diameter (D). The EoC element () is located inside the first internal diameter (D) of the first element () and the first element () and the EoC element rotates relatively to each other in a gearing ratio. The EoC element () thus operating as the inner rolling circle of a hypocycloid counting the numbers of relative rotations. The EoC mechanism further has stopping means ()) provided for stopping the relative rotation in a predetermined position which position correlates to the initial injectable content of drug in the injection device such that a user cannot at any time set a dose larger than the quantum left in the injection device at any time.

Non-axial working end-of content mechanism and an injection device comprising the same

An electronically controlled add-on device with a switch arrangement comprises a powered switch which is open during most of its lifetime, i.e. during both storage and operational use. More specifically, in one embodiment the add-on device comprises a secondary switch so that there are an open and a closed switch. The logics of the electronic circuitry control the circuitry so that the closed switch will be un-powered and the open switch will be powered. When the switch is mechanically changed, both switches are changed by the controller so that the closed switch will be un-powered and the open switch will be powered.

Power efficient add-on device

Growing community of inventors

Frederiksberg, Denmark

Carsten Soerensen