Siemens optical navigation system facilitates minimally-invasive surgery
8 June 2009
Siemens Healthcare has introduced the Cappa C-Nav, an optical
navigation system that is especially suitable for spinal as well as
The new navigation system enables surgeons to perform interventions
with greater safety and precision. It also minimizes radiation exposure
to the patient as well as the operating room (OR) staff.
Orthopaedic and trauma surgeons, especially, will benefit from the
new technollgy. Precision is a substantial pre-condition in the OR in
general, but in particular in spinal and trauma surgery as well as in
The Siemens Cappa C-Nav optical navigation
system for minimally invasive surgery
In spinal surgery, for example, the new system helps to accurately
position pedicle screws in the spine; in orthopaedics navigation
technology is used to support online visualization during stabilization
of degenerated bones.
Prior to the operation, the surgeon creates a 3D X-ray data set of
the region of interest. This data set is used like a map for orientation
during surgical intervention. The surgeon navigates during the operation
by using so-called optical tracking via a special stereo camera.
The picture shows screw planning for spinal surgery
using the navigation system.
The surgeon is able to use the navigation system easily and by
himself via a sterile user interface. The surgeon’s instruments and
patient’s body region of interest are provided with differently arranged
small reflecting marker spheres.
The camera continuously acquires the position of these spheres and
informs the navigation system of their location. This enables the
surgeon to proceed with even greater accuracy during the operation by
virtually testing the length of the screws, for example. Also the
ability to continuously check the progress and results of an operation
may save patients the need for a second surgical intervention.
Cappa C-Nav is optimally tailored for the mobile C-arm Arcadis Orbic
3D and, if needed, can be retrofitted for these systems. Beginning in
June 2009, Cappa C-Nav will be available for the first time in Germany,
Austria and Switzerland.
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