Method and apparatus for controlling contact of biomedical electrodes with patient skin
US6171304A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 1999 |
| Grant date | Jan 9, 2001 |
| Priority date | — |
| Expiry date | Feb 23, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/0066
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
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."
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.