Patent ID: 8313438

Claim:
A medical imaging system, comprising: an imaging device configured and arranged to be insertable into an intravascular portion of a living being and to image the interior of the living being, the imaging device comprising: an ultrasound transducer; and bias circuitry electrically coupled with the transducer and configured and arranged to electrically bias the transducer; a driveshaft coupled to the imaging device and configured and arranged for rotating the imaging device; a signal line located along the driveshaft and coupled to both the ultrasound transducer and the bias circuitry and configured and arranged for delivery of both a transducer drive signal to the transducer and a charge to the bias circuitry; an image processing system configured and arranged to provide the transducer drive signal and the charge for the bias circuitry; and a coupling device configured and arranged to inductively couple the signal line to the image processing system, wherein the image processing system is configured and arranged to provide the charge for the bias circuitry using a signal which appears as an AC signal to the coupling device.