Cuvette for sampling and analysis
First Claim
1. A disposable cuvette for simultaneously sampling a fluid and analyzing the sampled fluid, comprising:
- a body member having an exterior and at least one cavity defined by surrounding walls,an inlet in said walls communicating said cavity with the exterior of the body member and through which said sampled fluid can enter said cavity by capillary forces, at least one of the walls including a semipermeable membrane, said semipermeable membrane having one surface defining a portion of said cavity and an opposite surface forming an external surface of said cuvette, said semipermeable membrane having a predetermined porosity and thereby functioning as a discriminator to permit entry only of molecules/ions up to a certain size, and at least one reagent incorporated in the cuvette in contact with said semipermeable membrane.
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Accused Products
Abstract
Disposable cuvette for essentially simultaneous sampling of a fluid and analyzing the sample. The new cuvette comprises a body member having at least one cavity defined by surrounding walls, into which cavity the sample is permitted to enter by capillary force through an inlet communicating said cavity with the exterior of the body member. According to the invention, the cuvette is characterized in that at least a portion of the walls facing the cavity consists of a semipermeable membrane, optionally with an integrated electrode and/or sensor system, and that at least one reagent or reagent system is incorporated in the cuvette.
693 Citations
12 Claims
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1. A disposable cuvette for simultaneously sampling a fluid and analyzing the sampled fluid, comprising:
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a body member having an exterior and at least one cavity defined by surrounding walls, an inlet in said walls communicating said cavity with the exterior of the body member and through which said sampled fluid can enter said cavity by capillary forces, at least one of the walls including a semipermeable membrane, said semipermeable membrane having one surface defining a portion of said cavity and an opposite surface forming an external surface of said cuvette, said semipermeable membrane having a predetermined porosity and thereby functioning as a discriminator to permit entry only of molecules/ions up to a certain size, and at least one reagent incorporated in the cuvette in contact with said semipermeable membrane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification