BENTE, PAUL F., IV,HANSON, IAN B.,MANDES, VINCENT E.,O'CONNOR, SEAN M.
申请号：
CA2881305
公开号：
CA2881305A1
申请日:
2013.08.29
申请国别(地区):
CA
年份:
2014
代理人:
摘要：
A variable rate controlled delivery drive mechanism includes a drive mechanism housing, at least partially within which initially resides a biasing member positioned in an initially energized state within an inner cavity of a piston. The drive mechanism may include a gear drive having one or more screws and one or more corresponding nuts. The piston contacts a plunger seal and is configured to axially translate the plunger seal, by force asserted upon it from the biasing member, from a first position to a second position within a drug container for drug delivery. The biasing member is metered from free expansion from its energized state by the gear drive and a gear assembly mechanism having a motor. A drug delivery pump utilizes such variable rate controlled delivery mechanisms. A status reader configured to recognize one or more corresponding status triggers is utilized to provide feedback to a user.
