Planar sensor for determining a chemical parameter of a sample
First Claim
1. Planar sensor for determining a chemical parameter of a sample, comprising a substrate whose surface is at least partly plane and is provided with at least one potentiometric, amperometric or optical transducer, and at least one biochemical component said transducer and said biochemical component, being provided on said surface of said substrate or at least part of said surface as a sensor spot protected by a cover membrane which is gas and ion permeable and is heat welded to the surface of said substrate facing said sample forming a thermal seal, wherein those of said sensor spots that comprise a potentiometric or amperometric transducer are in contact with a strip conductor attached to said plane surface of said substrate, and wherein the thermal seal of said cover membrane is interrupted where said conducting stripes lead away from said sensor spots.
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Accused Products
Abstract
A planar sensor for determining a chemical parameter of a sample, includes a substrate whose surface is at least partly plane and is provided with at least one potentiometric or amperometric and, possibly, an optical transducer, and one or more biochemical components. The transducer and the biochemical component are provided on the surface of the substrate, or at least part of the surface, as a sensor spot, and a cover membrane surrounding this sensor spot, is heat welded to the surface of the substrate. Those sensor spots that include a potentiometric or amperometric transducer are in contact with a strip conductor attached to the plane surface of the substrate and the thermal seal of the cover membrane is interrupted where the conducting strips lead away from the sensor spots.
478 Citations
20 Claims
- 1. Planar sensor for determining a chemical parameter of a sample, comprising a substrate whose surface is at least partly plane and is provided with at least one potentiometric, amperometric or optical transducer, and at least one biochemical component said transducer and said biochemical component, being provided on said surface of said substrate or at least part of said surface as a sensor spot protected by a cover membrane which is gas and ion permeable and is heat welded to the surface of said substrate facing said sample forming a thermal seal, wherein those of said sensor spots that comprise a potentiometric or amperometric transducer are in contact with a strip conductor attached to said plane surface of said substrate, and wherein the thermal seal of said cover membrane is interrupted where said conducting stripes lead away from said sensor spots.
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11. Method of producing a planar sensor for determining a chemical parameter of a sample, said method including the steps of:
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(a) attaching a strip conductor to at least part of the surface of a substrate, (b) applying a potentiometric or amperometric transducer layer onto one end of said strip conductor, (c) affixing at least one biochemical component to said transducer layer, (d) covering at least said transducer layer and a surrounding area with a single gas and ion permeable cover membrane layer which is heat weldable to said substrate, and (e) thermally sealing said cover membrane to the substrate in areas not covered by said transducer later and said enzyme layer, the thermal seal being interrupted in the area of said strip conductor. - View Dependent Claims (12, 13, 14, 15)
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16. Method of producing a planar sensor for stermining a chemical parameter of a sample, said method including the steps of:
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(a) attaching a strip conductor to at least part of the surface of a substrate, (b) applying a poller matrix on one end of said strip conductor, (c) immobilizing a potentiometric or amperometric transducer and a biochemical component on or in said polymer matrix, (d) covering at least aid transducer layer and a surrounding area with a single gas and ion permeable cover membrane layer which is weldable to said substrate, and (e) thermally sealing said cover membrane to said substrate in areas not covered by said transducer layer and said enzyme layer, the thermal seal being interrupted in the area of said strip conductor. - View Dependent Claims (17, 18, 19, 20)
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Specification