Method and device for detecting an analyte in a body fluid
First Claim
1. A method for detecting at least one analyte in at least one sample of a body fluid, wherein at least one test element with at least one test field is used, the at least one test field having at least one test chemistry, wherein the test chemistry is adapted to perform at least one optically detectable detection reaction in the presence of the analyte, wherein the method comprises acquiring an image sequence of images of the test field by using at least one image detector, wherein each image comprises a plurality of pixels, wherein the method further comprises detecting using a control unit at least one characteristic feature of the test field in the images of the image sequence, wherein the method further comprises correcting using the control unit a relative position change between the image detector and the test field in the image sequence by using the characteristic feature, thereby obtaining a sequence of corrected images, wherein the sequence of corrected images is adapted for observing a time-dependent change of at least one optically detectable property of the test field due to the detection reaction of the test chemistry with the analyte to be detected.
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Accused Products
Abstract
A method for detecting at least one analyte in at least one sample of a body fluid is disclosed. Therein, at least one test element (124) is used, the at least one test element (124) having at least one test field (162) with at least one test chemistry (154) is used, wherein the test chemistry (154) is adapted to perform at least one optically detectable detection reaction in the presence of the analyte. The method comprises acquiring an image sequence of images of the test field (162) by using at least one image detector (178). Each image comprises a plurality of pixels. The method further comprises detecting at least one characteristic feature of the test field (162) in the images of the image sequence. The method further comprises correcting a relative position change between the image detector (178) and the test field (162) in the image sequence by using the characteristic feature, thereby obtaining a sequence of corrected images.
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Citations
20 Claims
- 1. A method for detecting at least one analyte in at least one sample of a body fluid, wherein at least one test element with at least one test field is used, the at least one test field having at least one test chemistry, wherein the test chemistry is adapted to perform at least one optically detectable detection reaction in the presence of the analyte, wherein the method comprises acquiring an image sequence of images of the test field by using at least one image detector, wherein each image comprises a plurality of pixels, wherein the method further comprises detecting using a control unit at least one characteristic feature of the test field in the images of the image sequence, wherein the method further comprises correcting using the control unit a relative position change between the image detector and the test field in the image sequence by using the characteristic feature, thereby obtaining a sequence of corrected images, wherein the sequence of corrected images is adapted for observing a time-dependent change of at least one optically detectable property of the test field due to the detection reaction of the test chemistry with the analyte to be detected.
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18. A device for detecting at least one analyte in at least one sample of a body fluid, wherein the device comprises at least one test element receptacle for receiving at least one test element having at least one test field with at least one test chemistry, wherein the device further comprises at least one image detector for acquiring an image sequence of images of the test field, wherein the device further comprises at least one control unit, wherein the control unit is adapted to:
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acquire an image sequence of images of the test field by using at least one image detector, wherein each image comprises a plurality of pixels, detecting at least one characteristic feature of the test field in the images of the image sequence, and correct a relative position change between the image detector and the test field in the image sequence by using the characteristic feature, thereby obtaining a sequence of corrected images, wherein the sequence of corrected images is adapted for observing a time-dependent change of at least one optically detectable property of the test field due to the detection reaction of the test chemistry with the analyte to be detected.
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19. A test system for detecting at least one analyte in at least one sample of a body fluid, the test system comprising:
- at least one device for detecting at least one analyte in at least one sample of a body fluid and at least one test element having at least one test field with at least one test chemistry, wherein the test chemistry is adapted to perform at least one optically detectable detection reaction in the presence of the analyte, wherein the device comprises at least one test element receptacle for receiving at least one test element having at least one test field with at least one test chemistry, wherein the device further comprises at least one image detector for acquiring an image sequence of images of the test field, wherein the device further comprises at least one control unit, wherein the control unit is adapted to;
acquire an image sequence of images of the test field by using at least one image detector, wherein each image comprises a plurality of pixels, detecting at least one characteristic feature of the test field in the images of the image sequence, and correct a relative position change between the image detector and the test field in the image sequence by using the characteristic feature, thereby obtaining a sequence of corrected images, wherein the sequence of corrected images is adapted for observing a time-dependent change of at least one optically detectable property of the test field due to the detection reaction of the test chemistry with the analyte to be detected. - View Dependent Claims (20)
- at least one device for detecting at least one analyte in at least one sample of a body fluid and at least one test element having at least one test field with at least one test chemistry, wherein the test chemistry is adapted to perform at least one optically detectable detection reaction in the presence of the analyte, wherein the device comprises at least one test element receptacle for receiving at least one test element having at least one test field with at least one test chemistry, wherein the device further comprises at least one image detector for acquiring an image sequence of images of the test field, wherein the device further comprises at least one control unit, wherein the control unit is adapted to;
Specification