Paul Richard Draper,Anthony Paul Morris,Stephen Francis Gilmore
申请号：
US14761769
公开号：
US20150320934A1
申请日:
2014.01.27
申请国别(地区):
US
年份:
2015
代理人:
摘要：
The invention relates to an arrangement for detecting a position of a plunger relative to a bung in a drug cartridge, comprising a proximity sensor located close to a distal end of the plunger facing the bung and aligned to receive light reflected by the bung.
