Patent ID: 7060054

Claim:
A device for administering an injectable product from a reservoir, through a dispensing means, and into a tissue of a patient, the device comprising: a casing for holding the reservoir; a suction chamber connected to the casing and adapted to abut against the tissue, the dispensing means terminating within the suction chamber; a piston pump comprising a cylinder, a piston, a piston rod, and a lock, a pressure side being provided on one side of the piston and a suction side being provided on the other side of the piston, wherein the piston rod may be operated to displace the piston within the cylinder to create a state of reduced pressure within the cylinder and, during the use of the device, in the suction chamber, and wherein the lock is adapted to lock the piston in place to maintain the state of reduced pressure in the cylinder; a passage interconnecting the suction chamber to the reduced pressure; and a cut-off valve located along the passage and adapted to isolate the suction chamber from the reduced pressure, wherein, after abutting the suction chamber against the tissue of the patient, the cut-off valve may be opened, thereby placing the suction chamber and the reduced pressure in the cylinder in fluid communication causing a state of reduced pressure within the suction chamber and bringing the tissue in contact with the dispensing means.