Patent ID: 11883247
Assignee: BRAINLAB AG
Field: Medical technology (Instruments)
Classification: CPC A  B  Y | IPC A  B

Claim 3:
4. A medical marker comprising:
a spherical marker core comprising:
a first hemispherical part defining a first cutting edge formed by cutting a first rim portion from a first marker core part; and
a second hemispherical part defining a second cutting edge formed by cutting a second rim portion from a second marker core part; and

a retro-reflective laminar material carried on outer surfaces of the first and second hemispherical parts,
wherein rim areas of the retro-reflective laminar material extend to the first and second cutting edges of the first and second hemispherical parts,
wherein the first and second cutting edges of the first and second hemispherical parts are disposed in mutual abutment,
wherein the first hemispherical part defines an extension disposed at a hollow side of the first hemispherical part opposite from the outer surface of the first hemispherical part,
wherein the extension defines a handling engagement section disposed at the hollow side of the first hemispherical part,
wherein the extension defines a recess extending within the extension from the outer surface of the first hemispherical 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.