Electrochemical and luminescent sensor structures integrated on common substrate
First Claim
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1. A sensor arrangement for detecting information indicative of a physiological substance in a body material of a physiological subject, the sensor arrangement comprising:
- a substrate;
a first sensor structure connected to the substrate and being configured for sensing the physiological substance electrochemically; and
a second sensor structure connected to the substrate and being configured for sensing the physiological substance by a luminescence detection,wherein the first sensor structure comprises an electrode and an enzyme comprising structure, the electrode being configured for electrically detecting a product of an enzyme-catalyzed chemical reaction between the physiological substance and an educt,wherein the second sensor structure comprises a luminescent substance having luminescent properties which change upon change of an amount of the educt of the enzyme-catalyzed chemical reaction, andwherein the electrode is arranged directly on the substrate, the luminescent substance is arranged in a surface portion of the sensor arrangement and is configured to contact the body material, and the enzyme comprising structure is arranged between the electrode and the luminescent substance.
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Abstract
A sensor arrangement for detecting information indicative of a physiological substance in a body material of a physiological subject, wherein the sensor arrangement comprises a substrate, a first sensor structure connected to the substrate and being configured for sensing the physiological substance electrochemically, and a second sensor structure connected to the substrate and being configured for sensing the physiological substance by a luminescence detection.
11 Citations
16 Claims
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1. A sensor arrangement for detecting information indicative of a physiological substance in a body material of a physiological subject, the sensor arrangement comprising:
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a substrate; a first sensor structure connected to the substrate and being configured for sensing the physiological substance electrochemically; and a second sensor structure connected to the substrate and being configured for sensing the physiological substance by a luminescence detection, wherein the first sensor structure comprises an electrode and an enzyme comprising structure, the electrode being configured for electrically detecting a product of an enzyme-catalyzed chemical reaction between the physiological substance and an educt, wherein the second sensor structure comprises a luminescent substance having luminescent properties which change upon change of an amount of the educt of the enzyme-catalyzed chemical reaction, and wherein the electrode is arranged directly on the substrate, the luminescent substance is arranged in a surface portion of the sensor arrangement and is configured to contact the body material, and the enzyme comprising structure is arranged between the electrode and the luminescent substance. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A monitoring system for monitoring a physiological substance in a body material of a physiological subject, the monitoring system comprising:
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a catheter being implantable in the physiological subject; a sensor arrangement integrated with the catheter, the sensor arrangement having a substrate, a first sensor structure connected to the substrate and a second sensor structure connected to the substrate, the sensor arrangement arranged such that the first sensor structure and the second sensor structure interact with a body material comprising the physiological substance in the physiological subject when the catheter is implanted in the physiological subject, the first sensor structure having an electrode and a structure comprising an enzyme, the electrode configured to electrochemically detect a product of an enzyme-catalyzed chemical reaction between the physiological substance and an educt, the second sensor structure having a luminescent substance having properties that change upon change of an amount of the educt of the enzyme-catalyzed chemical reaction, the second sensor configured to sense the physiological substance by a luminescence detection, wherein the electrode is arranged directly on the substrate, the luminescent substance is arranged in a surface portion of the sensor arrangement and is configured to contact the body material, and the enzyme comprising structure is arranged between the electrode and the luminescent substance; and an evaluation unit configured for evaluating a first sensor signal and a second sensor signal of the sensor arrangement in common, wherein the first sensor signal is detected as an electrochemical response of the first sensor structure upon interaction of the physiological substance with the first sensor structure, and the second sensor signal is detected as a response of luminescence properties of the second sensor structure upon interaction with the physiological substance. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. A method of manufacturing a sensor arrangement for detecting information indicative of a physiological substance in a body material, the method comprising:
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connecting a first sensor structure to a substrate and configuring the first sensor structure for sensing the physiological substance electrochemically; and connecting a second sensor structure with the substrate and configuring the second sensor structure for sensing the physiological substance by a luminescence detection, wherein the first sensor structure is arranged with an electrode and a structure comprising an enzyme, the electrode configured to electrochemically detect a product of an enzyme-catalyzed chemical reaction between the physiological substance and an educt, the second sensor structure having a luminescent substance with properties that change upon change of an amount of the educt of the enzyme-catalyzed chemical reaction, the second sensor structure configured to sense the physiological substance by a luminescence detection, and wherein the electrode is arranged directly on the substrate, the luminescent substance is arranged in a surface portion of the sensor arrangement and is configured to contact the body material, and the enzyme comprising structure is arranged between the electrode and the luminescent substance. - View Dependent Claims (16)
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Specification