Patent ID: 7918654

Claim:
A pumping apparatus for pumping a fluid, comprising: (A) a pump drive unit, comprising a motor accommodated in a drive unit housing; (B) a disposable pump unit including a pump base, a pumping chamber and a pump member, said pumping chamber being adapted to expand and contract for pumping by two-way forced reciprocation of said pump member, and further comprising one-way inlet and one-way outlet valves to said pumping chamber, said inlet and outlet valves being operable to alternately open and close by action of said fluid pumped through said chamber responsive to said reciprocation, wherein said pump member is fixedly attached to said pump base to define therebetween said pumping chamber, wherein said attachment is independent of said pump drive unit; and (C) mechanical coupling for reversibly mechanically coupling said pump base with said drive unit housing, wherein said motor and said pump member are configured so that attaching said pump base to said drive unit housing via said mechanical coupling brings said pump member and said motor to a position wherein operation of said drive unit results in engagement between said motor and said pump member, and providing for said reciprocation of said pump member by means of said drive unit; wherein said pump drive unit is configured for operation as a non-disposable unit, wherein said disposable pump unit is removed from said pump drive unit after use and allowing for further operation of said pump drive unit with a replacement disposable pump unit.