Magnetic field distortion detection and correction in a magnetic localization system
US12042262B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 2020 |
| Grant date | Jul 23, 2024 |
| Priority date | — |
| Expiry date | May 25, 2043 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2562/17
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for detecting and correcting for magnetic field distortions within a magnetic field used for medical magnetic localization systems may include a first set of one or more signals is indicative of the magnetic field sensed by each of the sensor coils within the metal distortion detection fixture at a first time received from the metal distortion detection fixture. A first magnitude value of the combined signals is determined. A second set of one or more signals is indicative of the magnetic field sensed by each of the sensor coils at a second time is received and a second magnitude value of the combined signals is determined. A magnetic shift in the magnetic field between the first and second magnitude values is determined. The magnetic shift is compared to a threshold shift amount indicative of a magnetic distortion in the magnetic field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.