A pump system for an infusion system includes a linear drive (36, 36′) which minimizes the space occupied by the pump components in a portable housing (10, 10′). A motor (34) and a motor drive shaft (42) are arranged in parallel with, and adjacent to a syringe (14, 14′) and lead screw (94, 94′)....http://www.google.com.au/patents/US20050051580?utm_source=gb-gplus-sharePatent US20050051580 - Drive system for an infusion pump
