Patent ID: 6926699

Claim:
An elongated syringe for administering a substance to a patient, comprising: a flexible syringe chamber dimensioned to be inserted into a duct of a patient, the flexible syringe chamber having a proximal end, a distal end, a lumen extending from the proximal end to the distal end, and a driving piston disposed within the lumen to create a first chamber compartment proximally disposed to the driving piston and a second chamber compartment distally disposed to the driving piston, wherein the first chamber compartment is constructed to contain a fluid to displace the driving piston and the second chamber compartment is constructed to contain a substance to be administered to a patient; a needle extending from the distal end of the flexible syringe chamber and having a lumen in communication with the second chamber compartment to receive a substance to be administered to a patient; and a plunger rod extending from the proximal end of the flexible syringe chamber.