Chemistry: molecular biology and microbiology – Measuring or testing process involving enzymes or... – Involving viable micro-organism
Reexamination Certificate
2007-02-27
2007-02-27
Naff, David M. (Department: 1657)
Chemistry: molecular biology and microbiology
Measuring or testing process involving enzymes or...
Involving viable micro-organism
C435S034000, C435S177000, C435S178000, C435S180000, C435S287100, C435S287800, C435S288100
Reexamination Certificate
active
10428655
ABSTRACT:
A device and method are provided for isolating and culturing microorganisms from a bulk fluid sample. The device comprises a container having therein a polymeric immobilization layer having interstitial spaces between polymer chains such as a gel matrix. The interstitial spaces are of an average size less than an average size of microorganisms to be separated from the sample and cultured. A bulk fluid sample is applied to the immobilization layer where fluid is absorbed by the layer and microorganisms remain on the surface of the layer. After culturing, microorganism colonies are readily accessible on the surface of the layer for harvest and testing. The immobilization layer may contain one or more of nutrients for microorganisms growth, lytic agents, lytic enzymes, antibiotics, antibiotic neutralizers, indicators, detergents and selective agents. An adjacent support layer may be above and/or below the immobilization layer. The immobilization layer may be in combination with a sensor layer that changes color in areas corresponding to portions of the layer having microorganisms thereon. A membrane may be embedded in the immobilization layer for enhancing microorganism visibility and facilitating microorganism harvest.
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Hyman Jones M.
Jeffrey Scott R.
Maresch Martin J.
Matsumura Paul M.
Thorpe Thurman C.
bioMerieux Inc.
Naff David M.
Patel Samir R.
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