Air-pump arrangement for an acoustic measurement device

An acoustic measurement device configured to provide acoustic property values for objective ear-condition evaluation of a patient's ear, wherein:

• at least part of said acoustic measurement device being configured to be positioned within an ear canal of said patient and configured to take a resting position within said ear canal,
• said acoustic measurement device comprising an ear probe,
• said acoustic measurement device comprising an air-pump arrangement, said air-pump arrangement, at least in said resting position, being in fluid connection with said ear canal through at least one tube running via said ear probe,
• said air-pump arrangement, in said resting position, being configured to apply an air-pressure control procedure, consisting of at least one air-pressure level, across said patient's tympanic membrane of said ear, wherein:
• said acoustic measurement device, in said resting position, being configured to provide acoustic property values in reaction to said air pressure control procedure applied by said air-pump arrangement across said patient's tympanic membrane of said ear,
• characterized in that,
• said air-pump arrangement comprising at least two pumps, wherein said at least two pumps comprising a movable element in the form of a membrane.