A drug delivery device that utilizes a fluid subsystem with a switching device to deliver multiple drugs to an animal without causing contamination. The fluid subsystem can further comprise disposable syringes, fluid reservoirs, disposable tubing and a catheter. In the embodiments that utilize multiple...http://www.google.co.uk/patents/US7488309?utm_source=gb-gplus-sharePatent US7488309 - Device and method for drug delivery to animals
