Patent ID: 8773660
Filing Date: 2014-07-08
Classification: A61M,G01D,G01F

Abstract:
1. A system for use in determining a longitudinal position of a stopper within a medicament container comprising, a) a translucent medicament container containing a stopper and a liquid medicament, where the container has a length terminating at a head; b) a photo sensitive sensor that is laterally positioned next to the medicament container such that it extends over at least part of the length of the medicament container; c) a light source positioned in a circular manner around the head of the medicament container, where the light source is configured to emit light into the medicament container, wherein the medicament container is positioned relative to the photo sensitive sensor and light source such that light from the light source is scattered to allow the photo sensitive sensor to detect the scattered light, and wherein the photo sensitive sensor is electrically connected to a processor unit.