Patent ID: 8083717

Claim:
An apparatus for dispensing fluids to a patient comprising: (a) a fluid delivery and control assembly having a fluid outlet and comprising: (i) a body having first and second spaced apart chambers; (ii) a selector assembly connected to said body, said selector assembly having a fluid passageway in communication with said fluid outlet and being movable relative to said body from a first position wherein said fluid passageway is in communication with said first chamber and a second position where said fluid passageway is in communication with said second chamber; and (b) a first stand alone unitary reservoir unit having a threaded neck portion threadably received within said first chamber of said body of said fluid delivery and control assembly for communication with said fluid passageway of said selector assembly, said first unitary reservoir unit comprising a first housing having a first reservoir for containing a fluid and a first stored energy means for controllably urging said fluid from said first reservoir; (c) a second stand alone unitary reservoir unit having a threaded neck portion threadably received within said second chamber of said body of said fluid delivery and control assembly for communication with said fluid passageway of said selector assembly, said second unitary reservoir unit comprising a second housing having a second reservoir for containing a fluid and a second stored energy means for controllably urging said fluid from said second reservoir; (d) a first rate control assembly connected to said body for controlling the rate of fluid flow from said first unitary reservoir unit toward said fluid outlet, said first rate control assembly comprising: (i) a first rate control plate having a plurality of fluid micro-channels; and (ii) a first rate control shaft in communication with said rate control plate, said first rate control shaft having a central bore and a plurality of radially extending passageways; and (e) a second rate control assembly connected to said body for controlling the rate of fluid flow from said second unitary reservoir unit toward said fluid outlet, said second rate control assembly comprising: (i) a second rate control plate having a plurality of fluid micro-channels; and ii) a second rate control shaft in communication with said rate control plate, said second rate control shaft having a central bore and a plurality of radially extending passageways.