System and method for measuring position and orientation using distortion-compensated magnetic fields
US7373271B1 · kind B1 · utility
164Cited by
16References
19Claims
0Family size
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Key dates
| Filing date | Sep 20, 2004 |
| Grant date | May 13, 2008 |
| Priority date | — |
| Expiry date | Feb 10, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2034/2051
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An electromagnetic tracking system (600) and a distortion compensation method (500) that utilize a lead-lag network model to compensate for position and orientation distortion caused by eddy currents formed in one or more conductive distorters (330, 658A-C) located within a tracking environment during electromagnetic tracking of one or more objects (612). the method is adaptive relative to the amount of distortion cause by the conductive distorters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.