Shielded permanent magnet activator for implanted cardiac devices
US6694184B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 9, 2001 |
| Grant date | Feb 17, 2004 |
| Priority date | — |
| Expiry date | Nov 12, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S206/818
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and assembly for selectively actuating features of implanted medical devices with a magneto-static field. The method includes selectively exposing the implanted device to a static magnetic field source, selectively shielding the magnetic field source, and distancing the shielded magnetic field source from the medical device. One version of the assembly includes a permanent magnet and a displaceable shield assembly that shields the magnetic field generated by the magnet in one configuration and is displaceable to a second configuration wherein the magnetic field is at least partially exposed. In another version, the assembly is an electromagnet that can be selectively activated and deactivated. The electromagnet generates minimal magnet field when it is off.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.