Inconsistent field-based patch location coordinate correction
US11033201B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 4, 2016 |
| Grant date | Jun 15, 2021 |
| Priority date | — |
| Expiry date | Jan 4, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2505/05
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method uses multiple patches fixed to a surface of a body, the patches including respective electrodes in contact with the surface, and at least one of the patches configured to output a signal in response to a magnetic field applied to the body. Initially, the signal is processed to compute first magnetic and first electrical locations of the at least one of the patches. Subsequently, the signal is processed to compute second magnetic and second electrical locations of the at least one of the patches. A first relation is computed between the first magnetic and electrical locations, and a second relation is computed between the second magnetic and electrical locations. When there is a difference between the first and the second relations, a magnetic location correction is computed responsively to the difference, and the correction is applied in tracking a position of a magnetic tracking sensor inside the body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.