Device and method for detecting microorganisms
First Claim
1. A device for continuously monitoring biological activity in a specimen comprising a sealable specimen container with a sealing means, having an internal chamber in which a specimen may be cultured with a culture medium, having at least one transparent section and a sensor means located inside said container in the region of the transparent section, whereby changes in the appearance of the sensor means can be continuously monitored from the exterior of said container through said transparent section, thereby monitoring biological activity without violating the integrity of said container after sealing, said sensor means comprising a membrane and an indicator medium, the indicator medium being selected for its ability to exhibit a detectable change when exposed to products of an organism'"'"'s metabolic activity.
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Accused Products
Abstract
An instrument and a sealable vessel for detecting the presence of microorganisms in a specimen, the vessel containing a liquid culture medium communicating with a sensor means containing an indicator medium therein. Changes in the indicator medium resulting from pH change or change in CO2 concentration in the medium are detected from outside the vessel.
159 Citations
21 Claims
- 1. A device for continuously monitoring biological activity in a specimen comprising a sealable specimen container with a sealing means, having an internal chamber in which a specimen may be cultured with a culture medium, having at least one transparent section and a sensor means located inside said container in the region of the transparent section, whereby changes in the appearance of the sensor means can be continuously monitored from the exterior of said container through said transparent section, thereby monitoring biological activity without violating the integrity of said container after sealing, said sensor means comprising a membrane and an indicator medium, the indicator medium being selected for its ability to exhibit a detectable change when exposed to products of an organism'"'"'s metabolic activity.
Specification