Method and apparatus for disconnecting the tip electrode during MRI
US8032228B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 5, 2008 |
| Grant date | Oct 4, 2011 |
| Priority date | — |
| Expiry date | Apr 2, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/901
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A medical device includes a pulse generator, a lead, and an electrode. The lead includes an electrode and a lead conductor connecting the pulse generator with the electrode via first and second conductive paths. The medical device includes first and second switches. The first switch includes a non-conductive state in the presence of a magnetic field, the non-conductive state preventing formation of the first conductive path between the pulse generator and the electrode. The second switch includes a non-conductive state that prevents formation of the second conductive path between the pulse generator and the electrode. The first switch in the non-conductive state and the second switch in the non-conductive state electrically shields the electrode from electromagnetic radiation and induced voltages during a magnetic resonance imaging procedure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.