Blood sample culture device

Abstract

The invention relates to a device for carrying out bacterial culture on a blood sample and particularly relates to a blood sample culture device. The blood sample culture device comprises a magnetic stirring device, wherein the a blood culture flask is fixed on the magnetic stirring device, a liquid medium is put in the blood culture flask, and a real-time detection and sampling device is fixed on the blood culture flask. The blood sample culture device is characterized in that the real-time detection and sampling device is provided with two channels, wherein the first channel is connected with a sampling pipe, a second channel is sequentially provided with a CO2 sensor and a pressure sensor, and the CO2 sensor and the pressure sensor are communicated with the inside of the blood culture flask through a hollow channel in the real-time detection and sampling device and are also linked with a computer. The blood sample culture device has the advantages of short detection cycle and high sensitivity, integrates multiple detection techniques and makes up the defects caused by single use of a pressure monitoring method.

Description

technical field [0001] The invention relates to a device for bacterial culture of blood samples, in particular to a blood sample culture device. Background technique [0002] In hospital clinical and medical research trials, automated blood culture is a microbiological examination method used to test the presence or absence of bacteria in blood samples. It is very important to have bacterial growth to confirm the diagnosis, so blood culture is one of the most important and common bacterial testing items. At present, the instruments and supporting blood culture bottles used clinically for blood culture mainly rely on imports, such as the Bactectm9000 series of the American BD company and the French Mérieux Bact / Alert3D, which use fluorescence or color sensing methods to observe the growth process of bacteria produced CO 2 The amount of change can be used to judge whether there is bacterial growth. This detection method is more accurate but has certain limitations in actual ...

AI Technical Summary

Problems solved by technology

At present, the instruments and supporting blood culture bottles used clinically for blood culture mainly rely on imports, such as the Bactectm9000 series of the American BD company and the French Mérieux Bact / Alert3D, which use fluorescence or color sensing methods to observe the growth process of bacteria produced CO 2 The amount of change can be used to judge whether there is bacterial growth. This detection method is more accurate but has certain limitations in actual clinical practice. For the production of trace amounts of CO 2 or produce CO 2 Other gases will be missed, resulting in false negative test results

[0003] Therefore, the current automatic blood culture instrument detection system has the following disadvantages: high cost of use, long inspection cycle, low sensitivity, high false negative rate of detection, and biological contamination, etc.

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