Martin Johst Christensen,Bjoern Gullak Larsen,Kurt Solgaard,Carsten Soerensen
申请号：
US16480487
公开号：
US20200001015A1
申请日:
2018.01.19
申请国别(地区):
US
年份:
2020
代理人:
摘要：
The invention relates to an injection device comprising an End-of-Content mechanism. The End-of-Content mechanism comprises a piston rod (10) being driven forward by a rotatable piston rod guide (20), a driver (50) attached to a dose setting tube (30) and an End-of-Content tube (40). 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 (3), 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.
