Compass-based indicator with magnetic shielding
US6883241B2 · kind B2 · utility
17Cited by
15References
48Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2003 |
| Grant date | Apr 26, 2005 |
| Priority date | — |
| Expiry date | Jul 31, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2209/04
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention is directed toward a magnetic shield included in a compass-based indicator tool. The indicator tool utilizes a compass to indicate a device setting of an implantable medical device. The implantable medical device may include a target that creates an internal magnetic field for the compass to interact with. External magnetic fields, specifically earth's magnetic field, may interfere with the compass and create an incorrect device setting indication. The magnetic shield blocks the external magnetic fields from influencing the accuracy of the device setting measurement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.