Patent ID: 8007740
Filing Date: 2011-08-30
Classification: B01L,G01N,Y10T

Abstract:
1. A reaction cuvette wash unit, comprising: a cleaning needle assembly which comprises at least one cleaning needle for cleaning its respective reaction cuvette, wherein the cleaning needle assembly comprises: a straight guide pair which comprises a sliding block and a guide, wherein the sliding block is connected to the cleaning needle assembly to cause the cleaning needle assembly to move; a driving device which is connected to the sliding block so as to cause the sliding block to move along an axis of the guide; a motor, an output shaft of which is connected to a lead screw in the driving device so as to drive the lead screw to move at least one of a plurality of cleaning needles in the cleaning needle assembly to or from a cleaning position to clean a respective cuvette; a trigger component, which is associated with the at least one cleaning needle in a manner to move with the at least one cleaning needle; a sensor for sensing the position of the trigger component, wherein the motor is operatively coupled to the sensor, and when the trigger component moves or is caused to move to a position, the sensor is triggered and sends a trigger signal to stop the motor from driving the driving device of the reaction cuvette wash unit to prevent the at least one cleaning needle from being further driven into the respective cuvette in the reaction cuvette wash unit.