Patent ID: 7973667
Filing Date: 2011-07-05
Classification: A61F,A61M

Abstract:
1. A method of detecting a liquid leak in an extra corporeal blood treatment system comprising: attaching a wetness sensor to an absorbent material surrounding a needle insertion site, the wetness sensor including: whereby the wetness sensor detects an electrical signal, determines whether the signal is greater than a predetermined wetness detection threshold value, wherein a wetness detection threshold value greater than the predetermined value indicates the presence of wetness, and directs the electronic transmitter to transmit to a receiver unit in communication with the wetness sensor at least one signal that wetness has been detected, whereby the receiver unit triggers an alert system, comprised of one or more alarms selected from the group consisting of the display of a warning message, an audible alarm, a visual alarm and a physical alert, and directs the extracorporeal blood treatment system to stop one or more pumps or close one or more blood line valves of the system.