Medical device position detecting system, medical device guiding system, and position detecting method for medical device
US9002434B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2006 |
| Grant date | Apr 7, 2015 |
| Priority date | — |
| Expiry date | Aug 6, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2034/732
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Position detection of a medical device is prevented from being impossible even when the frequency characteristic of a magnetic induction coil is varied in accordance with the state of an external magnetic field for guiding the medical device. A medical device position detecting system is a medical device position detecting system which is inserted into the body of a subject and guided by an external magnetic field, and it is equipped with a resonance circuit that is mounted in the medical device, contains a magnetic induction coil having a magnetic material inside and generates an alternate magnetic field, an alternate magnetic field detecting device that is disposed at the outside of an operation region of the medical device and detects the alternate magnetic field generated by the magnetic induction coil, a position information calculator for calculating position information of the medical device on the basis of the detected alternate magnetic field, and a frequency setting unit for setting at least one of the frequency of the alternate magnetic field detected by the alternate magnetic field detecting device and the frequency of the alternate magnetic field generated by the magne…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.