Hybrid magnetic-based and impedance-based position sensing
US7536218B2 · kind B2 · utility
414Cited by
18References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 15, 2005 |
| Grant date | May 19, 2009 |
| Priority date | — |
| Expiry date | Feb 19, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/0035
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A position sensing system includes a probe adapted to be introduced into a body cavity of a subject. The probe includes a magnetic field transducer and at least one probe electrodes. A control unit is configured to measure position coordinates of the probe using the magnetic field transducer. The control unit also measures an impedance between the at least one probe electrodes and one or more points on a body surface of the subject. Using the measured position coordinates, the control unit calibrates the measured impedance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.