Martin Martin Vogel

US Patent:

20170095312, Apr 6, 2017

Filed:

Oct 2, 2015

Appl. No.:

14/874273

Inventors:

- Palo Alto CA, US
Martin Vogel - Seattle WA, US

International Classification:

A61B 90/00
A61L 31/18
A61L 31/02

Abstract:

A wireless marker including a magnetic transponder employs a high-Z material to improve the visibility of the marker in radiographic images and the electrical performance of the marker for tracking with a tracking system. The magnetic transponder includes a ferromagnetic core and a coil of a conductive wire comprising the high-Z material around the ferromagnetic core. The magnetic transponder generates a wirelessly transmitted magnetic field in response to wirelessly transmitted excitation energy.