An in vivo source of mechanical energy is provided in close proximity to its load. In the disclosed embodiments, the mechanical energy source is a miniaturized motor ("micromotor") and the load is a miniaturized perfusion pump located at the distal end of a transluminal catheter. The motor is powerful...http://www.google.co.uk/patents/US6089235?utm_source=gb-gplus-sharePatent US6089235 - Method of using an in vivo mechanical energy source
