User manual
Version: v4.5.2
Active markers with batteries shall be handle with care. Op-
erator who gets in contact with battery leakage incurs a risk
of chemical burn. The integrator has to indicate in the end
user manual that the battery of an active marker has to be
removed after usage, especially in the case the active marker
undergoes a sterilisation procedure.
The batteries used in active markers must comply with the
regulation standards.
Battery for active markers must be sterile. The integrator
has to indicate in the end user manual to use only sterilized
batteries according to ISO 14937.
Any electric defects on active markers such as explosion,
leakage, overheating might lead to operator or patient injury.
The integrator has to use an adequate protection (e.g. fuse)
that limits the current drawn from the battery. The integrator
has to ensure that active markers contain a polarity marking
and a polarity inversion circuit on the marker.
The measurement precision of an active marker can be deto-
riated because of liquids on its ducials or IR-receptor. In-
structions about identifying and cleaning of active ducial
must be clearly specied by the integrator in the end user
manual.
An active ducial marker must be sterilised before each us-
age. Cleaning or sterilisation methods instructions must be
clearly specied by the integrator in the end user manual.
An active ducial marker is able to transmit its individual
parameters and data to the system. It can also notify the
fusionTrack with alert messages. An error message alert-
ing that battery power is low is sent. That message must
be handled by the integrator to alert the operator that the
marker is not considered as operational due to a low battery
and the ducials must be turned off.
A weak optical signal from the IR-LEDs can lead to a wrong
estimation of the position. The integrator should ensure the
ducials are turned off if the battery voltage goes under a
given threshold.
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