阻抗法细菌快速自动检测装置的研制

首都医科大学学报 ›› 1990, Vol. 11 ›› Issue (2): 121-124.

阻抗法细菌快速自动检测装置的研制

姜远海¹, 林家义¹, 王翌¹, 李郁英²

1. 首都医学院生物医学工程系;2. 首都医学院微生物教研室

收稿日期:1988-03-31 修回日期:1900-01-01 出版日期:1990-04-15 发布日期:1990-04-15

A System Based on Electrical Impedance Method for Automatic Fast-Bacteria Detection

Jiang Yuanhai¹, Lin Jiayi¹, Wang Yi¹, Li Yuying²

1. Biomedical Engineering Department, Capital Institute of Medicine;2. Department of Microbiology, Capital Institute of Medicine

Received:1988-03-31 Revised:1900-01-01 Online:1990-04-15 Published:1990-04-15

摘要/Abstract

摘要： 利用细菌在培养基中繁殖的代谢产物电阻率降低的特性,研制一种带微机的阻抗法细菌快速自动检测装置。该装置主要由细菌培养槽,数控恒流源,微处理机,A/D与D/A转换器,记录显示等5部分组成。它可在2～3h内用四电极法自动检测出常见细菌繁殖的阻抗变化特征曲线。用本装置测出的阻抗曲线可分辨待测试样中有无常见细菌,也可作药物敏感试验等,大大缩短了细菌检测的时间,提高细菌检测的效率。

关键词: 阻抗法, 细菌快速检测, 四电极法, 阻抗变化特征曲线

Abstract: Based on a fearture of decrease in the electrical resistivity of metabolite with bacteria propagating in culture medium, a microprocessor controled system is designed for automatic fast-becteria-detection on electrical impedance method. The system consists of five parts, maliny: bacteria-culture tubes, digit-controled stabiliger, microprocessor, A/D and D/A converters, printer and display screen, The system can determine impedance characteristic curves with bacteria propagation by a quadruyple electrodes method Within two to three hours. These impedance curves are used to identify whether there are common bacteria in a given sample, take drug sensibility tests and so on, In addition, the time for bacteria detection can be reduced very much and the detection efficiency becomes very high.

Key words: electrical impedance method, fast-bacteria-detection, quadruple electroues method, impedance characteristic curves

姜远海;林家义;王翌;李郁英. 阻抗法细菌快速自动检测装置的研制[J]. 首都医科大学学报, 1990, 11(2): 121-124.

Jiang Yuanhai;Lin Jiayi;Wang Yi;Li Yuying. A System Based on Electrical Impedance Method for Automatic Fast-Bacteria Detection[J]. Journal of Capital Medical University, 1990, 11(2): 121-124.