Position sensing using electric dipole fields
US10588543B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2013 |
| Grant date | Mar 17, 2020 |
| Priority date | — |
| Expiry date | Mar 10, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2034/2053
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A medical apparatus, including a reference probe having a flexible insertion tube with a distal end for insertion into a body cavity, a pair of isolated electrodes fixedly attached to the distal end, and a position sensor fixedly located in the distal end. The apparatus also includes a supplementary probe having an electrode fixed thereto. The apparatus further includes a processor, configured to inject respective alternating currents into the pair of isolated electrodes so as to generate an electrical field therefrom, to measure a potential generated at the electrode of the supplementary probe in response to the electrical field, and to evaluate a location of the supplementary probe with respect to the reference probe in response to the measured potential and in response to a position of the distal end indicated by the position sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.