Integrated test element
First Claim
1. A monitoring system for analysing a sample to be examined comprisinga test field containing a reagent which on contact, interacts with an analyte contained in a sample resulting in an optically detectable change in the test field, wherein the reagent is configured to irreversibly react with the analyte, wherein the reagent is configured to analyse glucose concentration;
- at least one light-conducting element havinga distal end on which the test field is coated, wherein the test field is permanently adhered to form a layer on the distal end anda proximal end into which light can be coupled such that light is conducted from the proximal end to the test field and is conducted away again from the test field by the same or another light-conducting element;
a lancet which at least partially surrounds the light-conducting element having a lancet tip which is located in a region of the distal end and of the test field in such a manner that the lancet tip extends beyond the distal end of the light-conducting element and beyond the test field during a lancing process, wherein the lancet has an opening that enables the test field on the distal end of the light-conducting element to protrude beyond the lancet tip for contacting the sample, wherein the opening of the lancet is unobstructed to allow the test field on the distal end of the light-conducting element to protrude beyond the lancet tip, wherein the lancet tip is sharpened to pierce skin to form a wound in skin; and
a driver configured to move the test field on the distal end of the light-conducting element from a first position where the test field is located inside the lancet to a second position where the test field on the distal end of the light-conducting element protrudes beyond the lancet tip for contacting the sample of blood emerging from the wound on the surface of the skin after the wound is formed for reducing dead space issues.
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Accused Products
Abstract
The invention relates to the field of integrated systems which comprise a test element and a lancet which can be firstly used to make a wound in a skin opening in order to collect a sample. The sample is subsequently directly taken up by the test element in the process of which it comes into contact with a reagent contained in the test element and results in an optically detectable change in a test field. The change in the test field is detected by means of an analytical unit which is optically contacted with the test field via at least one light-conducting element.
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Citations
26 Claims
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1. A monitoring system for analysing a sample to be examined comprising
a test field containing a reagent which on contact, interacts with an analyte contained in a sample resulting in an optically detectable change in the test field, wherein the reagent is configured to irreversibly react with the analyte, wherein the reagent is configured to analyse glucose concentration; -
at least one light-conducting element having a distal end on which the test field is coated, wherein the test field is permanently adhered to form a layer on the distal end and a proximal end into which light can be coupled such that light is conducted from the proximal end to the test field and is conducted away again from the test field by the same or another light-conducting element; a lancet which at least partially surrounds the light-conducting element having a lancet tip which is located in a region of the distal end and of the test field in such a manner that the lancet tip extends beyond the distal end of the light-conducting element and beyond the test field during a lancing process, wherein the lancet has an opening that enables the test field on the distal end of the light-conducting element to protrude beyond the lancet tip for contacting the sample, wherein the opening of the lancet is unobstructed to allow the test field on the distal end of the light-conducting element to protrude beyond the lancet tip, wherein the lancet tip is sharpened to pierce skin to form a wound in skin; and a driver configured to move the test field on the distal end of the light-conducting element from a first position where the test field is located inside the lancet to a second position where the test field on the distal end of the light-conducting element protrudes beyond the lancet tip for contacting the sample of blood emerging from the wound on the surface of the skin after the wound is formed for reducing dead space issues. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A monitoring system for analysing a sample to be analysed comprising
a test field containing a reagent which on contact, interacts with an analyte contained in a sample resulting in an optically detectable change in the test field, wherein the reagent in the test field reacts essentially irreversibly with the analyte; -
at least one light-conducting element having a distal end which is permanently connected to the test field, wherein the test field is permanently adhered to form a layer on the distal end, and a proximal end into which light can be coupled such that light is conducted from the second end to the test field and is conducted away again from the test field by the same or another light-conducting element; a lancet having a lancet tip which is located in a region of the distal end and of the test field in such a manner that the lancet tip extends beyond the distal end of the light guide and beyond the test field during a lancing process, the lancet being hollow, wherein the light-conducting element extends within the lancet, wherein the lancet has an opening that enables the test field on the distal end of the light-conducting element to protrude beyond the lancet tip for contacting the sample, wherein the lancet tip is configured to create a wound, wherein the lancet tip is embedded in a sterile protection; and a driver configured to move the test field on the distal end of the light-conducting element from a first position where the test field is located inside the lancet to a second position where the test field on the distal end of the light-conducting element protrudes beyond the lancet tip for contacting the sample on the surface of skin after the wound is formed for reducing dead space issues, wherein a side of the test field opposite the distal end of the light-conducting element is configured to directly contact the sample bled from the wound when in the second position. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification