Impedance shift and drift detection and correction
US10492869B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2016 |
| Grant date | Dec 3, 2019 |
| Priority date | — |
| Expiry date | Feb 13, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/0166
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An impedance location of an electrode in an impedance based coordinate system and a magnetic location of a magnetic position sensor in a magnetic based coordinate system can be received. A transformed impedance location of the magnetic position sensor can be computed. A difference between the transformed impedance location of the magnetic position sensor and the magnetic location of the magnetic position sensor can be determined. A magnitude of the difference between the impedance location of the magnetic position sensor and the magnetic location of the magnetic position sensor can be computed. A statistical significance of the difference between the transformed impedance location of the magnetic position sensor and the magnetic location of the magnetic position sensor can be computed. A determination can be made that an impedance shift exists if the magnitude of the difference exceeds a threshold and a statistical significance of the difference exceeds a threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.