Microsensor and use of such microsensor
First Claim
1. A microsensor for measuring the concentration of a substance in an environment such as a liquid, a gas or a matrix, which microsensor comprises:
- a reaction space containing biologically active or catalytic material for consuming or transforming the substance during concurrent consumption or concurrent transformation of a co-factor,a diffusion permeable outer barrier for delimitation of the reaction space, anda detector for the co-factor placed at a distance from the outer barrier;
the reaction space comprising a diffusionally tight first casing with an entrance opening, in which the outer barrier is placed, the microsensor further comprising a diffusion impermeable second casing, which abuts the reaction space, the co-factor being present in a supply space in the second casing, the second casing having a connection opening between the supply space and the reaction space, the connection opening being arranged at a distance from the entrance opening, a diffusion permeable middle barrier being located in the connection opening, and the detector being located in the reaction space or in the middle barrier.
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Accused Products
Abstract
The invention relates to a microsensor for determining the concentration of a primary substrate by measuring the concentration of a secondary substrate. The microsensor comprises a transducer (1) for measuring the secondary substrate. The transducer (1) is surrounded by a first casing (8), which has an opening (9) with a barrier (10). The first casing (8) surrounds a second casing (11), also with an opening (12) with a barrier (13). In the first casing (8) between the barrier (10) and barrier (13), a reaction space (15) is formed. In the reaction space (15) an environment with catalytic components is contained. By measuring the concentration of the secondary substrate, the presence of the primary substrate can be determined.
9 Citations
27 Claims
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1. A microsensor for measuring the concentration of a substance in an environment such as a liquid, a gas or a matrix, which microsensor comprises:
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a reaction space containing biologically active or catalytic material for consuming or transforming the substance during concurrent consumption or concurrent transformation of a co-factor, a diffusion permeable outer barrier for delimitation of the reaction space, and a detector for the co-factor placed at a distance from the outer barrier; the reaction space comprising a diffusionally tight first casing with an entrance opening, in which the outer barrier is placed, the microsensor further comprising a diffusion impermeable second casing, which abuts the reaction space, the co-factor being present in a supply space in the second casing, the second casing having a connection opening between the supply space and the reaction space, the connection opening being arranged at a distance from the entrance opening, a diffusion permeable middle barrier being located in the connection opening, and the detector being located in the reaction space or in the middle barrier. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 16, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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- 9. A microsensor for measuring the concentration of a primary substrate in an environment, such as a fluid, a gas or a matrix, which microsensor comprises a first casing with an opening which is in contact with a first barrier and a reaction space which borders on the first barrier, in which reaction space a catalytic material is located, a material intended to catalyse a conversion of the primary substrate with the concomitant conversion of a secondary substrate, the microsensor further comprises a transducer for the secondary substrate, the transducer being located at a predetermined distance from the first barrier, the microsensor having a second casing, the second casing having an opening in contact with a second diffusion permeable barrier, the second barrier being established at a distance from the first barrier so that the reaction space is formed in the first casing between the first barrier and the second barrier, and the second casing constituting a source of the secondary substrate.
Specification