Patent ID: 8029468

Claim:
A dispensing apparatus for dispensing fluids to a patient at a controlled rate comprising a housing having: (a) a first fluid reservoir for containing fluid to be dispensed to the patient, said housing being provided with a first inlet for permitting fluid flow into said first fluid reservoir and a first outlet for permitting fluid flow from said first fluid reservoir; (b) a first pusher assembly disposed within said housing for movement between a first position and a second position to cause said fluid contained within said first fluid reservoir to flow toward said first outlet; (c) a first spring disposed within said housing for acting upon said first pusher assembly to cause said first pusher assembly to move toward said second position; (d) a first fill assembly carried by said housing for filling said first fluid reservoir with the fluid to be dispensed; (e) a first rate control assembly carried by said housing for controlling fluid flow from said first fluid reservoir to the patient; (f) a second fluid reservoir for containing fluid to be dispensed to the patient, said housing being provided with a second inlet for permitting fluid flow into said second fluid reservoir and a second outlet for permitting fluid flow from said second fluid reservoir; (g) a second pusher assembly disposed within said housing for movement between a first position and a second position to cause said fluid contained within said second fluid reservoir to flow toward said second outlet; (h) a second spring disposed within said housing for acting upon said second pusher assembly to cause said second pusher assembly to move toward said second position; (i) a second fill assembly carried by said housing for filling said second fluid reservoir with the fluid to be dispensed; (j) a second rate control assembly carried by said housing for controlling fluid flow from said second fluid reservoir to the patient; (k) an administration set connected to said housing and in communication with said first and second rate control assemblies for dispensing fluid to the patient; and (l) a selector member carried by said housing for controlling fluid flow from said first and second rate control assemblies toward said administration set.