Daniel A. Heinsbergen,Bryan Frederick Bell, Jr.,Robert Scott Russo,Dinesh Panneerselvam,Brandon J. McKee
申请号：
US15116153
公开号：
US10420891B2
申请日:
2015.02.03
申请国别(地区):
US
年份:
2019
代理人:
摘要：
An expanding plunger rod for a syringe is configured to transition from a packaged configuration to an expanded configuration for operation. The rod includes a substantially cylindrical outer sleeve having a closed-off bottom end and an open upper end, and an inner rod having a lower end and an upper end. The inner rod is slidably disposed coaxially within the outer sleeve. In the packaged configuration, the inner rod is nested within the outer sleeve. In the expanded configuration, the inner rod is disposed substantially axially above the outer sleeve, and the inner rod locks axially in place to prevent transition from the expanded to the packaged configuration.
