Patent ID: 7985202

Claim:
An infusion device comprising: a pump forming at least a front chamber and a rear chamber lined up in a direction of fluid flow; an elastic reservoir forming at least a first lumen and a second lumen therein; a first passageway in fluid communication with the front chamber and second lumen; a second passageway in fluid communication with the rear chamber, the first lumen, and the second lumen; and a catheter connected on the reservoir; wherein each of the chambers is covered with and closed by a penetrable membrane for respectively receiving first and second medicaments therein; the second passageway communicates with the first lumen through a first hole, the first lumen communicating with the second lumen through a second hole, the second hole having a diameter smaller than a diameter of the first hole; and the catheter defines a passageway adapted to deliver the medicaments to a human body.