Becton, Dickinson and Company
Liquid Medicament Reservoir Empty Detection Sensor and Occlusion Sensor for Medicament Delivery Device

Abstract:

A low medicament sensor for a medicament delivery device having a reservoir, a pump, and a fluid path therebetween for medicament, the sensor including a switch and a snap dome. The snap dome is initially in contact with the switch, in fluid communication with the fluid path, and configured to snap out of contact with the switch when a pressure within the snap dome decreases below a predetermined pressure.