Medical diagnosis, treatment and imaging systems
US6788967B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1999 |
| Grant date | Sep 7, 2004 |
| Priority date | — |
| Expiry date | Mar 23, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3627
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A locating system for determining the location and orientation of an invasive medical instrument, for example a catheter or endoscope, relative to a reference frame, comprising: a plurality of field generators which generate known, distinguishable fields, preferably continuous AC magnetic fields, in response to drive signals; a plurality of sensors situated in the invasive medical instrument proximate distal end thereof which generate sensor signals in response to said fields; and a signal processor which has an input for a plurality of signals corresponding to said drive signals and said sensor signals and which produces the three location coordinates and three orientation coordinates of a point on the invasive medical instrument.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.