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ASCENSION
DEMONSTRATES LATEST microBIRD
SENSOR WITH IMMUNITY TO FERROUS
METAL DISTORTION AT THE AMERICAN
ORTHOPAEDIC CONFERENCE
BURLINGTON,
VERMONT; February 9, 2005.
Ascension Technology’s latest
microBIRD™ medical guidance
tracker, overcoming all forms
of metallic distortion of
measurements, will be demonstrated
at the American Association
for Orthopaedic Surgeons (AAOS)
Annual Meeting in Washington,
D.C; Feb 23-26, 2005
.
MicroBIRD instantly measures
the six degree s-of-freedom
location of one or more sensors,
1.3 mm wide and smaller, for
applications in image-guided
interventions. Sensors are
typically located in the distal
tip of instruments -- such
as flexible endoscopes and
catheters.
In conjunction
with imaging modalities and
software, the sensors continuously
report their location on a
graphical display that serves
as a roadmap guiding a physician’s
instrument to a target within
the human body. With microBIRD
and advanced imaging systems,
clinicians can literally "see"
inside the human body.
A limiting
factor in the widespread use
of 3D guidance devices in
minimally invasive surgery
and procedures has always
been inaccuracies in sensor
measurements caused by the
disturbance of magnetic sensor
measurements by nearby metals:
conductive and ferrous.
Ascension’s
pulsed DC magnetic tracking
technology overcomes distortions
caused by common “conductive”
hospital metals, such as stainless
steel, titanium and aluminum,
but until now ferrous metals
(steel and iron alloys) have
presented a problem. The introduction
of Ascension’s new planar
(flat) transmitter, pictured
here, solves the ferrous metal
problem. The device not only
generates a clean magnetic
field above a patient, but
also negates any distortion
in measurements caused by
ferrous metals in OR tables
and metallic objects beneath
the patient.
Magnetic
tracking devices are the preferred
method for guiding medical
instruments within the body
because their measurements
are NOT lost when the sensor
is not within a clear line-of-sight
of its transmitter and it
does not produce hazardous
ionizing radiation.
VISIT
US AT AAOS IN BOOTH 220 HALL
C
Ascension
Technology Corporation, based
in Burlington, Vermont, USA,
is the world leader in DC
magnetic guidance and motion
tracking solutions for medical
applications. More information
about Ascension trackers is
available at www.ascension-tech.com
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