Tag and system for patient safety monitoring

Details Tag and system for patient safety monitoring Tag and system for patient safety monitoring

G - Physics

01

V

G01V 15/00 (2006.01) G01S 13/74 (2006.01) G08B 13/26 (2006.01) G08B 21/00 (2006.01) G08B 21/22 (2006.01) G01S 13/75 (2006.01)

Patent

CA 2260577

The tag includes: a tag for monitoring the security of a patient, the tag comprising, a housing having a wall, the wall having an inner surface and an outer surface, an electronic circuit located in the housing, the electronic circuit including an alarm circuit, including a capacitance measuring circuit, the capacitance measuring circuit having first and second electrodes, the first and second electrodes located adjacent the inner surface and in spaced relation from one another to form a capacitor, the alarm circuit having means for generating an alarm signal upon the capacitance measuring circuit detecting a level of capacitance corresponding to an alarm condition, whereby the outer surface of the housing is placed in contact with the patient, with the first and second electrodes capacitively coupled to the patient, but without the first and second electrodes in physical contact with the patient, the capacitance measuring circuit detects an alarm condition when the patient is no longer in contact with the outer surface of the tag.

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