Patent ID: 7674243

Claim:
An injection system comprising: a tip segment attachable to and removable from a limited reuse assembly; the tip segment comprising: a dispensing chamber housing having an inner surface and an outer surface, the inner surface defining a dispensing chamber for receiving a quantity of a substance, the dispensing chamber housing having a plurality of perforations; a storage chamber located near the dispensing chamber housing; a piezoelectric array located between the storage chamber and the dispensing chamber housing, the piezoelectric array fluidly coupled to the plurality of perforations; a needle fluidly coupled to the dispensing chamber; and a first housing at least partially enclosing the dispensing chamber housing, the storage chamber, and the piezoelectric array; the limited reuse assembly comprising: a power source for providing power to the piezoelectric array; a controller for controlling the power source; and a second housing at least partially enclosing the power source and the controller; wherein the piezoelectric array is activated to pump the substance from the storage chamber, through the plurality of perforations, to the dispensing chamber.