ХИГГИНС, Дэниел, Дэвид (GB),ПЛАМПТР, Дэвид Обри (GB),ВИСИ, Роберт (GB),ДЖОНС, Мэттью (GB),МАРШ, Уилльям (GB),БАТЛЕР, Джозеф (GB)
申请号：
RU2015147853
公开号：
RU2015147853A
申请日:
2014.04.08
申请国别(地区):
RU
年份:
2017
代理人:
摘要：
The present invention relates to a handheld automatic injection device comprising a housing (10, 30, 40； 40&prime；), a piston rod (80) located within the housing (10, 30, 40； 40&prime；), a drive member (70) permanently coupled to the piston rod (80), a dose setting member (50), which during dose setting rotates relative to the housing (10, 30, 40； 40&prime；) in a first direction and which during dose dispensing rotates relative to the housing (10, 30, 40； 40&prime；) in a second opposite direction, and a power reservoir (100) for driving the drive member (70). The drive member (70) is axially movable between a dose setting position, in which the drive member (70) is rotationally constrained to the housing, and a dose dispensing position, in which the drive member (70) is rotationally decoupled from the housing (10, 30, 40； 40&prime；). The power reservoir comprises a reverse wound flat spiral spring (100) having a first end attached to a first spool (101) and a second end attached to a second spool (102), with one of the spools (102) being coupled to the drive member (70).
