US 11,703,525 B2
Current sensor with reduced voltage coupling
Robert B. Smith, Loveland, CO (US)
Assigned to Covidien LP, Mansfield, MA (US)
Filed by Covidien LP, Mansfield, MA (US)
Filed on Jan. 28, 2021, as Appl. No. 17/160,536.
Application 17/160,536 is a continuation of application No. 15/144,341, filed on May 2, 2016, granted, now 10,908,187.
Prior Publication US 2021/0148953 A1, May 20, 2021
Int. Cl. G01R 15/18 (2006.01); A61B 18/12 (2006.01); A61B 18/00 (2006.01)
CPC G01R 15/185 (2013.01) [A61B 18/1206 (2013.01); G01R 15/181 (2013.01); A61B 2018/00178 (2013.01); A61B 2018/00827 (2013.01); A61B 2018/00833 (2013.01); A61B 2018/1286 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A current sensor comprising:
a current sense coil disposed about a conductive lead, the current sense coil configured to sense a current passing through the conductive lead, the current sense coil including:
an outer coil configured to detect a first magnetic field, the outer coil including:
a first balancing coil portion forming a first half of a circumference of the outer coil; and
a second balancing coil portion forming a second half of the circumference of the outer coil;
a conductive plane configured to detect the first magnetic field, the conductive plane including:
a first balancing plane portion; and
a second balancing plane portion; and
an inner conductor disposed between the outer coil and the conductive plane, the inner conductor configured to detect a second magnetic field generated by the current.