An apparatus for infusion of liquids into human or animal bodies which comprises a liquid reservoir having a reduced-pressure generating means associated therewith and an active delivery-dosing means, such as a roller pump, operationally coupled with the reservoir and with an outflow catheter having...http://www.google.de/patents/US4191181?utm_source=gb-gplus-sharePatent US4191181 - Apparatus for infusion of liquids
