Patent ID: 10137445

Abstract:
A single use capillary micropipette and a method of use for dispensing a defined volume of a liquid are disclosed. The capillary micropipette includes a housing, a piston disposed therein and a capillary tube connected to the housing. The housing has a holding chamber including chamber snap fit elements on the chamber wall, piston stop(s) and a bottom having a central opening with a tubular member extending therefrom. The piston includes a push cap having snap fit arms extending downward and a piston rod. In the assembled position, a venting space between the piston head and the central opening permits venting during aspiration of a liquid into capillary tube by capillary force. In response to an applied downward force, the snap fit arms of the push cap snap over chamber snap fit elements and piston rod slides in the tubular member, thereby dispensing a defined volume of the liquid.