HANSON, IAN B.,BEAVER, SCOTT,BOKELMAN, KEVIN,MAJETTE, MARK,BENTE, PAUL F., IV
申请号：
CA2881306
公开号：
CA2881306A1
申请日:
2013.08.29
申请国别(地区):
CA
年份:
2014
代理人:
摘要：
A controlled delivery drive mechanism includes a drug container having a barrel and a plunger seal； a drive housing within which at least initially partially resides a piston having an interface surface and a drive rack； and a power spring. The piston is configured to contact and axially translate the plunger seal within barrel. The mechanism may be configured to convert rotational movement of a drive pinion to axial translation of the drive rack, or to convert axial force of a linear power spring into torsional motion of a drive pinion. A regulating mechanism meters the drive pinion such that the piston is axially translated at a controlled rate. The drug container may contain a drug fluid within a drug chamber for drug delivery at a controlled rate. The regulating mechanism may be an escapement regulating mechanism. A drug delivery pump includes such controlled delivery drive mechanisms.
