US 11,806,532 B2
Implantable lead with asymmetric fiducial marker
Benjamin Pobiel, St. Paul, MN (US)
Assigned to Heraeus Medical Components LLC, St. Paul, MN (US)
Filed by Heraeus Medical Components LLC, St. Paul, MN (US)
Filed on Nov. 19, 2020, as Appl. No. 16/952,680.
Claims priority of provisional application 62/940,382, filed on Nov. 26, 2019.
Prior Publication US 2021/0154473 A1, May 27, 2021
Int. Cl. A61N 1/36 (2006.01); A61B 90/00 (2016.01); A61N 1/05 (2006.01)
CPC A61N 1/3605 (2013.01) [A61B 90/39 (2016.02); A61N 1/05 (2013.01); A61B 2090/363 (2016.02); A61B 2090/3966 (2016.02); A61B 2090/3983 (2016.02)] 17 Claims
OG exemplary drawing
 
7. An implantable lead comprising:
an elongated lead body extending along a longitudinal axis and having a proximal end and a distal end;
a plurality of electrodes disposed about a circumference of the lead body at the distal end and spaced apart from one another along the longitudinal axis; and
a fiducial marker disposed about at least a portion of the circumference of the lead body at the distal end, the fiducial marker disposed at a known position relative to the plurality of electrodes and having a structure with an asymmetrical shape about the longitudinal axis when viewed in any radial direction from the longitudinal axis so as to provide a unique radioscopic silhouette in any radial direction, the fiducial marker including a proximal portion, a distal portion, and a central portion extending between the proximal portion and the distal portion;
the proximal portion comprising a band;
the distal portion comprising a segment extending parallel to the longitudinal axis; and
the central portion comprising a helically-shaped element connected between the band and the segment.