System for detecting position of capsule endoscope in subject
US7398117B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2004 |
| Grant date | Jul 8, 2008 |
| Priority date | — |
| Expiry date | Nov 29, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B1/00029
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A system includes a device that is swallowed, passes through a subject, and includes a magnetic field generator generating a constant magnetic field; and a position transducer. The position transducer includes a magnetic detector detecting a magnetic filed, a magnetic field extractor extracting the constant magnetic field output from the magnetic field generator by removing a noise magnetic field component from the magnetic field detected by the magnetic detector, and a position processor calculating a position of the device in the subject based on an intensity of the constant magnetic field extracted by the magnetic field extractor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.