Method and apparatus for controlling contact of biomedical...

Details Method and apparatus for controlling contact of biomedical... Method and apparatus for controlling contact of biomedical...

A - Human Necessities

61

N

A61N 1/06 (2006.01) A61B 18/12 (2006.01) A61B 18/16 (2006.01) A61N 1/08 (2006.01)

Patent

CA 2285469

A method of monitoring the contact of a biomedical electrode to skin of a patient is disclosed, where the phase angle of current flow through one portion of the electrode is compared to the phase angle of current flow through another portion of the electrode. The two portions are both electrical conductors, one having a lossy dielectric surface and the other bare metal. Any monitoring of an electrical interface is possible based on the difference in phase angle. 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".

L'invention porte sur un procédé permettant de suivre le contact d'électrodes biomédicales avec la peau d'un patient par comparaison de l'angle de phase des courants passant par deux parties différentes de l'électrode. Les deux parties sont toutes deux des conducteurs électriques dont l'une présente une surface recouverte d'un diélectrique à pertes, et l'autre est en métal nu. Les susdites différences d'angles de phase permettent toutes sortes d'observations de l'interface électrique. Le soulèvement de toute partie de l'électrode supprimant le contact avec la peau du patient peut s'apprécier plus facilement qu'avec les circuits usuels d'observation de la qualité des contacts, et qu'avec les "split plate patient plates".

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