Infusion pump device with venting feature

An infusion device for infusion of a fluid from a reservoir into a body, the infusion device being connectable to an infusion set adaptor, the infusion device comprising:

• a drive mechanism for operatively coupling with at least a portion of the reservoir;
• a housing configured to contain at least a portion of the reservoir and to at least partially or fully contain the drive mechanism;
• a sealing device configured to permit passage of air into and out of a first compartment of or within the housing and to inhibit passage of liquids through the sealing device between the first compartment and a neighboring compartment of or within the housing;
• a connecting site for operatively coupling the infusion set adaptor;
• wherein the sealing device is arranged at a location on a path for movement of air between two neighboring compartments, the two being selected from the group comprising:
• a compartment partially or fully containing the drive mechanism, a battery compartment, a carpule compartment, or a compartment containing electronic control circuitry a function key or a display.