SYSTEMS AND METHODS FOR MAKING AND USING A STEPPER MOTOR FOR AN INTRAVASCULAR ULTRASOUND IMAGING SYSTEM
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United States of America Patent
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Issued Date -
Mar 24, 2011
app pub date -
Sep 24, 2009
filing date -
Sep 24, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A catheter assembly for an intravascular ultrasound system includes an imaging core disposed in a lumen of a catheter. The imaging core includes a stepper motor that rotates a mirror coupled to a driveshaft. The stepper motor provides step-wise rotation of the driveshaft using a rotatable magnet and at least two magnetic field windings disposed around at least a portion of the magnet. At least one fixed transducer is positioned between the stepper motor and the mirror. The stepper motor permits stepwise rotation of the driveshaft with steps of 3 degrees or less. At least one transducer conductor is electrically coupled to the at least one transducer and in electrical communication with a proximal end of the catheter. At least one motor conductor is electrically coupled to the magnetic field windings and in electrical communication with the proximal end of the catheter.
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