B. Braun Medical Inc.

Chen Ho

Roger J Hill

Thinh Vo

A tubing installation checking device is provided for determining proper installation of a tubing along a tube receiving channel in a peristaltic pump of the type having a tube receiving channel and a door for holding a tubing therein. The tubing installation checking device includes a pressure sensor held in the peristaltic pump positioned along the tube receiving channel downstream from the pumping mechanism for sensing pressure in the tubing and for providing a signal representing the sensed pressure. A valve is provided held in the peristaltic pump along the tube receiving channel downstream from the pressure sensor for closing the tubing when it is installed in the tube receiving channel. A computer program is provided for closing the valve, for activating the pumping mechanism for a partial pumping stroke, for receiving a first pressure signal from said pressure sensor indicating the sensed pressure after the partial pumping stroke, for holding the pumping mechanism stationary during a predetermined period of time, for receiving a second pressure signal indicating the pressure in the tubing after the predetermined period of time, for comparing the first and second pressure signals to determine whether there is leakage in the tubing indicating improper tubing installation and if so for providing an alarm signal to indicate improper tubing installation.

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Plano, TX, United States of America

Chen Ho