Abstract: A catheter assembly can include a catheter, a controller, and an internal power source. The catheter can include a catheter tube and a catheter hub, wherein a proximal-end portion of the catheter tube can be disposed in the catheter hub. The catheter tube can incorporate a plurality of piezoelectric transducers into a length of the catheter tube. The plurality of piezoelectric transducers can be configured as a plurality of vibrators for vibrating and, thereby, inhibiting buildup of biomaterial on a luminal or abluminal surface of the catheter tube by way of vibrations along the length of the catheter tube when the catheter tube is placed in a vasculature. The controller can include a processor and memory, wherein the controller can be configured to control at least the plurality of piezoelectric transducers. The internal power source can be configured to power the controller and the plurality of piezoelectric transducers.

Abstract: A predecode unit is configured to predecode a fixed number of instruction bytes of variable length instructions per clock cycle. The predecode unit outputs predecode bits which identify the start byte of an instruction. An instruction alignment unit uses the start bits to dispatch the instructions to a plurality of decode units that form fixed issue positions. In one embodiment, the predecode unit identifies a plurality of length vectors. Each length vector is associated with one of the instruction bytes predecoded in a clock cycle and identifies the length of an instruction if an instruction starts at the instruction byte corresponding to the length vector. A tree circuit determines in which instruction bytes instructions start.