Patent ID: 9327072
Filing Date: 2016-05-03
CPC Classification: A61M

Claim Text:
1. A medical liquid delivery system comprising: a housing adapted to receive an IV line within a housing portion; wherein a received portion of the IV line is elastic to expand and contract in cross section with changes in pressure of liquid within the IV line; capacitive sensor electrodes positioned in the housing portion to flank the received IV line, and control electronics communicating with the capacitive sensor electrodes to measure capacitance across the capacitive sensor electrodes and to sense at least one condition including a bubble within medical liquid within a received line; wherein the capacitive sensor electrodes are attached to the housing to be retained in the housing with removal of the IV line; and wherein the sensing of a bubble within the medical liquid within the received IV line by the control electronics distinguishes capacitive changes occurring within a predetermined period from capacitive charges occurring over a longer time than the predetermined window.