Pressure detection device and microbial detection film system

Abstract

The invention discloses a pressure detection device and a microbial detection film system. The system comprises the pressure detection device, wherein the pressure detection device comprises a tube and a pressure detection element; the inside of the tube is provided with a displacement mechanism; one end of the tube is connected with an air outlet or a gas detection hole on a tank, the other end of the tube is connected with the measuring terminal of the pressure detection element; and the signal terminal of the pressure detection element is connected with the corresponding signal terminal ofa control device. The microbial detection film system with the pressure detection device of the invention can accurately and timely monitor the pressure change in the tank, ensure the correctness of the microbial detection result and avoid abnormal conditions such as the burst of the tank.

Description

technical field [0001] The invention relates to a pressure detection device for a microbe detection film system and a microbe detection film system with the pressure detection device. Background technique [0002] Microbiological testing is required before drugs enter the human body. At present, microbial inspection film systems are widely used at home and abroad to realize the microbial inspection of drugs. The microbiological inspection membrane system includes a microbiological inspection membrane filter driver (also known as a "bacteria collector") and a fully enclosed sterile test filter incubator. The microbiological test membrane filter driver includes a control device, a motor, and a peristaltic pump. The inspector inputs an on / off signal and a motor speed parameter to the control device through an input device, and the control device controls the operation of the peristaltic pump by controlling the motor. The fully enclosed sterility test filter culture device inc...

AI Technical Summary

Problems solved by technology

The microbial inspection film system adopts an external pressurization method. Although the system can test the microorganisms of the liquid medicine, it is found that there is a hidden danger of overpressure in the system during actual use. Overpressure will affect the accuracy of the test and other Not conducive to safe operation

Specifically, when the liquid medicine is pushed into the tank, the pressure in the filter tank is constantly changing. When the pressure in the tank is too high, the microorganisms in the tested liquid medicine may die, and this The occurrence of death will cause the test results to be misjudged as negative, thus causing unqualified drugs to enter the market, causing huge personal injuries; 0.45μm), the clogging phenomenon occurs, which increases the pressure in the tank made of plastic, and when the pressure in the tank exceeds the maximum tolerance limit, the tank may burst, not only the inspection failed, but also burst The small pieces of plastic splashed out may hurt the inspectors, and the splash of bacteria will also pollute the working environment

In addition, the system does not have a storage device, and the management department can only understand the inspection situation through the records made by the inspectors, and the inspection records may have defects such as inaccuracy, incompleteness, and wrong records, which cannot well meet the requirements of the management department. need

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