Shenzhen Mindray Bio-medical Electronics Co., Ltd.

Yaohui Zhang

Cheng Zhang

LiangQing Li

Disclosed are a device and a method for distributing measurement sample and cleaning tubes. The device comprises a diluent container for accommodating a diluent therein; an aspirating tube for sucking a measurement sample; a first syringe for quantifying the measurement sample; a second syringe for quantifying the diluent; a first switching unit for switching between a first passage and a second passage; a bath; a sample buffer tube communicated with the first syringe; a dispensing tube for dispensing the measurement sample or the diluent into the bath; a second switching unit for switching between a third passage and a fourth passage. A reagent buffer tube, a reagent container and a third switching unit may be further provided between the sample buffer tube and the first syringe, or between the second switching unit and the input port of the dispensing tube.

Device and method for distributing measurement sample and cleaning tubes

The present invention discloses a liquid volumetric device comprising a metering tube, a start sensor, an end sensor, a bath for storage of a sample to be metered, a vacuum chamber and a pump for pumping out air inside the vacuum chamber to form a negative pressure inside the vacuum chamber. The start sensor and the end sensor are provided respectively at the bottom and the top of the metering tube, the top of the metering tube is in communication respectively with the vacuum chamber and the outside atmosphere via pipelines, the bottom of the metering tube is in communication respectively with the bath and the vacuum chamber via pipelines, and control parts are provided in each of the pipelines for controlling connection/disconnection thereof. Thus, by forming a negative pressure inside the vacuum chamber, a sample in the bath may be pressed from down to up into the metering tube by means of a pressure difference between the atmosphere and the negative pressure, so as to complete the volume metering, whereby an occurrence of the side flow phenomenon can be completely eliminated.

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Shenzhen, China

Yaohui Zhang