US Patent 7856986 Magnetic alignment apparatus for a transcutaneous transfer system

In one embodiment of the invention, a transcutaneous transfer system is disclosed. The system comprises: an inductively-coupled coil system comprising an external and an internal coil adapted to be transcutaneously juxtaposed along a coupling axis; an internal magnet fixed relative to the internal coil; an external magnet assembly coupled to the external coil; and an apparatus to securely retain the magnet assembly in a desired one of a plurality of positions along a longitudinal axis substantially parallel to the coupling axis in response to tool-less manipulation of the apparatus.