A practical manual for nurses and physician assistants using this new technology, supplying them with the information necessary to utilise it effectively, including pump mechanics and the pharmacology of drug delivery. This is the only book of its kind, and its users at over 100 facilities have relied solely on the pump manufacturers manuals. The authors are from a leading centre for research and application of these pumps and, working with Dr. Richard Penn, have spent years developing their skills - Dr. Penn has personally implanted over 3,000 pumps.