Patent ID: 7601148

Claim:
An infusion pump to be implanted in the abdominal region of a patient comprising a housing, a reservoir which is received in the housing and can be filled with a fluid and has a piercing mandrel and outlet, a catheter, means for delivering fluid from the reservoir to the catheter, the means for delivery disposed outside the reservoir and whose delivery rate can be adjusted via an electronic control unit, wherein the means for delivery comprises a piezoelectric pump, the housing has a longitudinal axis and comprises an arc-shaped upper half-shell and an arc-shaped lower half-shell, each half- shell has a peripheral edge in the form of an ellipse and the peripheral edges are connected together in a fluid tight manner and form an arc-shaped housing, the upper half-shell is provided with at least one expansion joint which extends horizontally with respect to the longitudinal axis of the housing to promote an arc-shaped deformation of the housing when implanted in the abdominal region of the patient, wherein the upper shell experiences expansion and the lower shell is compressed.