VEASEY, ROBERT FREDERICK,费罗克,費羅克,PERKINS, ROBERT,彼罗特,彼羅特,PLUMPTRE, DAVID AUBREY,保大卫,保大衛
申请号：
TW093105522
公开号：
TWI389715B
申请日:
2004.03.03
申请国别(地区):
TW
年份:
2013
代理人:
摘要：
The present invention relates to a drive mechanism for use in a drug delivery device, comprising a housing； a dose dial sleeve (40) having a helical thread of a first lead； and a two-part piston rod (14).The piston rod(14) comprises an outer part having an external helical thread of a second lead and an inner part having an external helical thread of a third lead, whereby the first lead of the thread of the dose dial sleeve(40) is equal to the sum of the second lead of the thread of the outer part of the piston rod(14) and the third lead of the thread of the inner part of the piston rod(14).本發明關於一種用於藥物傳送裝置的驅動機構，其包含：一殼體；一劑量指示套筒(40)，其有一第一導程的螺旋螺紋；及一兩件式活塞桿(14)。活塞桿(14)包含一具有一第二導程之外螺旋螺紋的外部件及一具有一第三導程之外螺旋螺紋的內部件，藉此該劑量指示套筒(40)之螺紋的第一導程等於該活塞桿(14)外部件之螺紋的第二導程與該活塞桿(14)內部件之螺紋的第三導程的總和。
