Blood gas analyzer is an instrument that uses electrodes to measure acidity and alkalinity (pH), partial pressure of carbon dioxide (PCO2) and partial pressure of oxygen (P02) and other related indicators in arteries in a relatively short period of time.
The automatic blood gas analyzer has functions such as automatic calibration, automatic sample feeding, automatic detection and self-diagnosis of faults. This instrument has the advantages of easy operation, fast analysis speed and high accuracy. Blood gas analyzers play a vital role in the rescue and monitoring process of emergency medicine, respiratory failure, neonatal asphyxia and other diseases.
With the development of emergency medicine and intensive care medicine and the popularization of blood gas analysis technology, the clinical use of a wide range of blood gas analyzers automation and accuracy is increasingly higher.
Principle of blood gas analyzer
Blood gas analyzer is usually in the pipeline system of negative pressure suction, the sample blood is sucked into the capillary tube, and the capillary wall of the pH reference electrode, pH, P02, PC02 four electrodes contact, electrodes will be iBe0 amount of the parameters obtained converted to their respective electrical signals, these electrical signals after amplification, analog-to-digital conversion sent to the instrument's microcomputer, after processing the display and print out the measurement results. thus completing the entire detection process.
Blood gas analyzer structure
The blood gas analyzer is mainly composed of electrode system, pipeline system and circuit system. The electrode measuring system of blood gas analyzer includes pH measuring electrode, PCO2 measuring electrode and P02 measuring electrode.
The piping system of blood gas analyzer is the key part set up to complete the functions of automatic calibration, automatic measurement and automatic flushing.
Circuit system The circuit system is mainly for the amplification and analog-to-digital conversion of instrument measurement signals, displaying and printing results. The development of blood gas analyzer in recent years is mostly reflected in the upgrading of the circuit system. The automated analysis process is completed under the execution of computer programs.
