RESERVOIR PLUNGER POSITION MONITORING AND MEDICAL DEVICE INCORPORATING SAME

摘要

Apparatus are provided for infusion devices and related control systems and methods. In one embodiment, an infusion device includes a voided portion adapted to receive a shaft portion that includes a shaft coupled to a plunger of a reservoir. The shaft portion includes a detectable feature, and the infusion device includes a sensing arrangement proximate the voided portion to sense the detectable feature. In some embodiments, a control module is coupled to the sensing arrangement to determine a remaining amount of fluid in the reservoir based at least in part on the sensed position of the detectable feature. In other embodiments, the control module identifies an anomalous condition based at least in part on the sensed position of the detectable feature.

主权项

1. An infusion device, comprising:
a voided portion to receive a shaft portion including a displaceable shaft coupled to a plunger of a reservoir, the shaft portion comprising a protruding feature on the shaft; and a sensing arrangement proximate the voided portion to sense the protruding feature, wherein an electrical characteristic of the sensing arrangement is influenced by contact with the protruding feature.