Method and apparatus for detecting loss of contact of biomedical

Details Method and apparatus for detecting loss of contact of biomedical Method and apparatus for detecting loss of contact of biomedical

1997-08-29

1999-12-28

Dvorak, Linda C. M.

Surgery

Instruments

Electrical application

606 32, A61B 1739

Patent

active

060075325

ABSTRACT:
A method of monitoring the contact of a biomedical electrode to skin of a patient is disclosed, where at least two different frequencies are employed to periodically monitor total contact impedance of the electrode. The ratio of the change of the total contact impedances over time can then be monitored to indicate the amount of lift of the biomedical electrode from human skin to which it is supposed to be adhered. Lift of any portion of the electrode from contact with skin of a patient can be monitored more easily than using conventional Contact Quality Monitoring circuitry and "split plate patient plates."

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