In one embodiment of the invention, a steering system for mobile medical equipment includes left and right steerable wheel assemblies respectively with left and right steerable wheels. The gaming device, in one embodiment, preferably includes a card read-write device for reading data cards, one or more card holders for holding a plurality of data cards and one or more card transporters for moving data cards to and from the card holders. The drug delivery device has a sliding actuation mechanism that may be activated by a button or lever. A device and method to manufacture a magnetically driven electrode-catheter with flexible tethering includes one or more KEVLAR\xae fibers, distributed centrally or peripherally within a catheter shaft and oriented longitudinally, transversely, angularly or spirally. As such, not only is this novel method more efficient in silica gel manufacture, but the resultant materials are completely novel as well. Each pivoting arm can be locked in a closed, engaged position by one of a pair of releasable latch mechanisms disposed within the central body and engagable with the pivoting arms.