Abstract: A system to continuously and redundantly monitor a magnetic drive system includes temperature sensors coupled to the magnetic drive system. The temperature sensors are coupled to a transmitter, which generates output signals representing the temperatures of the temperature sensors. The system includes a transreceiver and a controller, where the transreceiver is coupled to the transmitter and configured to receive the output signals of the transmitter. The controller is communicatively coupled to the transreceiver and the magnetic drive system and is configured to control operation of the magnetic drive system based on one or more signals received from the transreceiver.

Abstract: A heat sink element for an adjustable speed magnetic drive unit operable by relative rotation of a conductor rotor assembly and a magnet rotor assembly includes a base portion and a plurality of groupings of fins. The base portion includes a mounting face that is sized and dimensioned to be coupled to the conductor rotor assembly, and an opposing convective heat transfer face. The plurality of groupings of fins extend from the convective heat transfer face of the base portion. Adjacent fins in each grouping of fins are separated by a channel that extends along a longitudinal direction of the fins. The plurality of groupings of fins are separated by at least one slot that extends substantially transverse to the longitudinal direction.

Abstract: The apparatus for determining the position of radioactive seeds in a pre-loaded brachytherapy needle includes a pickup unit into which the loaded needle is inserted. A scintillating (phosphor) screen responsive to radiation from the seeds produces a light output of selected wavelength, which is then picked up by an optical array positioned along the screen. The resulting optical signals are then transmitted to a display assembly. The optical signals are focused and then applied to a CCD device. The output of the CCD device is processed by a microprocessor to produce a visual display of the radioactive seeds within the needle.

Abstract: The stabilizer assembly is used to position a stepper assembly for an ultrasound probe. The stabilizer includes two spaced apart swivel assemblies, each swivel assembly including clamps at one end thereof locking the stabilizer to a table. Each swivel assembly includes several swivel arms which are connected at three spaced swivel points. One swivel arm is connected to a central assembly consisting of a central housing with two spaced apart ball joints connecting, respectively, to the two swivel assemblies. A linkage arrangement maintains the ball joints in a locked position by virtue of a spring biased push rod. To unlock the ball joints, the spring is compressed by actuation of a trigger, releasing pressure on the linkage assembly which permits the ball joints to move freely.