Instrument and methods for filling an implanted drug pump

A tool for refilling an implantable pump having a reservoir, the tool comprising:

• a refilling kit comprising first and second independent fluid channels connectable at first ends thereof to the reservoir;
• and
• a base unit comprising at least one pump, a sensor for monitoring at least one parameter relating to flow through the fluid channels, and feedback circuitry for controlling flow through the fluid channels based on the at least one monitored parameter, wherein the base unit is removably connectable to second ends of the fluid channels.

A method of filling an implantable drug-delivery pump having at least one reservoir, the method comprising the steps of:

• fluidly coupling a plurality of independent fluid channels to the reservoir;
• and
• operating a single pump to (i) purge the reservoir via at least a first of the plurality of fluid channels and (ii) pump fluid into the purged reservoir using a second of the plurality of fluid channels.