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1. (WO2017166695) BLOOD GAS ANALYZER

Pub. No.:    WO/2017/166695    International Application No.:    PCT/CN2016/097630
Publication Date: Fri Oct 06 01:59:59 CEST 2017 International Filing Date: Thu Sep 01 01:59:59 CEST 2016
IPC: G01N 27/416
Inventors: ZHU, Zhihua
WANG, Jihua
A blood gas analyzer, comprising a test card assembly (10) and a reagent package assembly (20). The test card assembly (10) at least comprises a test card body (110) provided with a calibration solution port (112). The reagent package assembly (20) at least comprises a rotary switch assembly (210), a liquid storage device (220), a gas intake device (230), and a sample intake device (240) provided with a liquid intake needle (241). The rotary switch assembly (210) comprises: a fixed valve body (211), provided with a first pipe port (214) in communication with the liquid storage device (220), a second pipe port (215) in communication with the sample intake device (240), and a third pipe port (216) in communication with the gas intake device (230); and a rotary body (212) provided with a connection pipe (213). The two ends of the liquid intake needle (241) are in communication with the second pipe port (215) and the calibration solution port (112), respectively. The rotary body (212) is provided within the fixed valve body (211) and is rotatable relative to the fixed valve body (211) to implement the communication between the first pipe port (214) and the second pipe port (215), or the communication between the second pipe port (215) and the third pipe port (216), or the turning off of the second pipe port (215). The blood gas analyzer uses the rotary switch assembly (210) to control the turning on/off of different pipes. There is no need for pressing or releasing rubber pipes, thereby the hidden danger of pipe blockage is not present, and calibration solution leakage is avoided.