Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1992-03-30
1994-03-01
Hofsass, Jeffrey
Communications: electrical
Condition responsive indicating system
Specific condition
340573, 128886, 128736, 604361, G08B 2100
Patent
active
052911810
ABSTRACT:
An monitoring system for detecting urine includes an electric circuit for activating an indicator, having a break in continuity bordered by a pair of electrodes, a lead member extending from each electrode, the lead members being in a spaced apart relationship from each other, and a sheet of hydrophilic material extending over and resting against the lead members for absorbing and retaining urine to permit the urine to provide a conductive path between the lead members to complete the circuit and activate the indicator. The indicator is either a light or a sound generator. The system may additionally include a flexible sheet of waterproof material to which the lead members are joined. The flexible sheet of waterproof material optionally fits into a pocket of a bed pad. The system may additionally include a heat sensor for monitoring the temperature of a person resting against the sheet of hydrophilic material. Two independent and spaced apart heat sensors are optionally provided and measure the temperature differential at two different points on the flexible sheet to indicate by the magnitude of the differential whether the sheet is wet. The system also preferably includes a water-permeable cover sheet which extends across a side of the sheet of hydrophilic material opposite the lead members. Several of these systems may be independently monitored at a single annunciator panel.
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Article regarding use of Wet Stop by Palco Labs of Santa Cruz, Calif. (no date).
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