Implantable marker with wireless signal transmitter
US8196589B2 · kind B2 · utility
24Cited by
148References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 24, 2003 |
| Grant date | Jun 12, 2012 |
| Priority date | — |
| Expiry date | Sep 9, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2005/1051
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A wireless marker for localizing a target of a patient comprises a casing and a magnetic transponder at least partially received in the casing. The magnetic transponder produces a wirelessly transmitted magnetic field in response to a wirelessly transmitted excitation energy. The magnetic transponder also has a magnetic centroid. The marker also comprises an imaging element carried by the casing and/or the magnetic transponder. The imaging element has a radiographic profile in a radiographic image such that the marker has a radiographic centroid at least approximately coincident with the magnetic centroid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.