US 11,883,247 B2
Multi-part marker
Josef Wildgruber, Ilmmunster (DE); Alexander Druse, Munich (DE); Tilo Callenbach, Schaffhausen (CH); and Christian Classen, Tengen (DE)
Assigned to Brainlab AG, Munich (DE)
Filed by Brainlab AG, Munich (DE)
Filed on Oct. 26, 2016, as Appl. No. 15/335,167.
Application 15/335,167 is a division of application No. 13/817,147, granted, now 9,517,108, previously published as PCT/EP2010/061894, filed on Aug. 16, 2010.
Prior Publication US 2017/0042635 A1, Feb. 16, 2017
Int. Cl. A61B 90/00 (2016.01); B29D 11/00 (2006.01); A61B 34/20 (2016.01); A61B 17/00 (2006.01)
CPC A61B 90/39 (2016.02) [A61B 34/20 (2016.02); B29D 11/00605 (2013.01); A61B 2017/00526 (2013.01); A61B 2034/2055 (2016.02); A61B 2090/3983 (2016.02); Y10T 29/49771 (2015.01); Y10T 29/49826 (2015.01); Y10T 29/49863 (2015.01); Y10T 29/53539 (2015.01)] 9 Claims
OG exemplary drawing
 
1. A multi-part medical marker comprising:
a spherical marker core comprising two corresponding parts fitted together to form the spherical marker core; and
a detectable surface formed from a retro-reflective laminar material applied to outer surfaces of the two corresponding parts of the spherical marker core and onto rims of the at least two corresponding parts,
wherein the rims of the two corresponding parts and rim areas of the retro-reflective laminar material applied to the outer surfaces of the two corresponding parts of the spherical marker core are cut off,
wherein cutting edges obtained by cutting off the rims of the two corresponding parts and the rim areas of the retro-reflective laminar material applied to the outer surfaces of the two corresponding parts serve as abutting edges where corresponding parts of the retro-reflective laminar material applied to the outer surfaces of the two corresponding parts abut each other,
wherein a first corresponding part of the two corresponding parts defines an extension disposed at a hollow side of the first corresponding part opposite from the outer surface of the first corresponding part,
wherein the extension defines a handling engagement section disposed at the hollow side of the first corresponding part,
wherein the extension defines a recess extending within the extension from the outer surface of the first corresponding part towards a center of the spherical marker core,
wherein the recess defines an internal thread adapted to engage an associated connecting object thereby configuring the medical marker for selective attachment with an associated object to be tracked using the medical marker.