Automated liquid-phase immunoassay apparatus and method therefor

An automated liquid immunoassay device comprising

• a straw arm capable of fixing a washing tip to a lower part and having a hollow penetrating vertically upward and downward inside;
• a magnetic beam positioned in the hollow of the straw arm and capable of moving vertically upward and downward relative to the straw arm;
• a movable body to which the straw arm is fixed;
• a movable body drive unit for moving the movable body;
• a driving motor for moving the magnetic beam, the driving motor fixed to the moveable body such that movement of the moveable body moves the driving motor, the straw arm, and the magnetic beam together as an integrated unit;
• a control unit for controlling the movable body drive unit;
• a punch arm having a punch tip at a lower part thereof and fixed to the movable body,
• wherein a length between the movable body and the lower part of the punch arm is longer than a length between the movable body and the lower part of the straw arm, and wherein movement of the moveable body moves the driving motor, the straw arm, the magnetic beam, and the punch arm;
• a collection arm capable of fixing a dispensing tip to a lower part thereof, having a hollow penetrating vertically upward and downward inside, and fixed to the movable body;
• and
• a remover plate comprising a remover hole in which a depression is formed,
• wherein the remover hole is configured to remove the dispensing tip from the collection arm, and the depression is recessed to a side of the remover hole to correspond to a position of the straw arm, and wherein, when the movable body is lowered toward the remover plate:
• (i) the washing tip fixed to the straw arm is seated in the depression such that the washing tip is not removed from the straw arm, and (ii) the dispensing tip fixed to the collection arm is caught by the remover hole such that the dispensing tip is separated from the collection arm.