Device for detecting microorganisms

Details Device for detecting microorganisms Device for detecting microorganisms

1996-05-21

1999-01-05

Beisner, William H.

Chemistry: molecular biology and microbiology

Apparatus

Including measuring or testing

4352881, 435807, 73 1905, 73 3104, 73DIG4, 422 8213, C12M 134, C12M 124

Patent

active

058561757

ABSTRACT:
A device and method for detecting microorganisms in a specimen by culturing the specimen in a sealable specimen container with a culture medium and detecting microorganisms in the specimen by measuring changes in pressure within the container caused by their metabolic activity during culturing. Pressure changes are measured using a sensor having a deformable section in communication with the container and a piezoelectric apparatus, such that the piezoelectric apparatus is deformed by changes in pressure within the specimen container and an electrical signal is produced by the deformation. The electrical signal is processed to detect any change in the rate of change of pressure, and thus detect the growth of microorganisms.

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