Patent ID: 9358343
Filing Date: 2016-06-07
CPC Classification: A61M

Claim Text:
1. A medicament delivery device, comprising: a housing having a proximal end and a distal end; a hollow piston plunger within the housing; a telescopic dose drum concentrically arranged between the housing and the piston plunger, the dose drum being bidirectional movable in relation to the housing and in relation to the piston plunger when setting a dose and delivering a dose; a piston plunger driver configured to drive the piston plunger toward the proximal end, comprising: a stop body connected to the piston plunger such that the stop body is rotatable but not slidable in relation to the piston plunger; and a stop member connected to the dose drum, wherein the stop member and stop body are configured to interact when the set dose equals a remaining dose in a medicament container such that rotation of the dose drum is inhibited.