Analytical test element with a capillary channel
First Claim
1. Analytical test element comprising:
- an inert cover,an inert carrier having a first surface,a detection element being formed to permit liquid penetration therein and including at least one reagent contained in the detection element, the detection element including a second surface facing the first surface, anda capillary channel including a sample opening and a vent opening and extends in a direction of capillary transport from the sample opening to at least an edge of the detection element that is nearest to the vent opening, wherein the capillary channel is formed by the inert carrier, the detection element, and the inert cover, the cover and the detection element being mounted end to end in such a way that the capillary channel extends without interruption from the sample application opening to the vent opening and a notch is positioned at an edge of the test element forming the sample opening so that a surface opposite to the notch is exposed.
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Accused Products
Abstract
The invention concerns an analytical test element for the determination of an analyte in a liquid containing an inert carrier, a detection element and a channel capable of capillary liquid transport which has a sample application opening at one end and a vent opening at the other end of the channel capable of capillary liquid transport, wherein the channel capable of capillary liquid transport is formed at least partially by the carrier and the detection element and extends in the direction of capillary transport from the sample application opening at least to the edge of the detection test element that is nearest to the vent opening and wherein a notch is located in one of the surfaces forming the channel capable of capillary liquid transport at the edge of the test element forming the sample application opening so that one side of the edge of the test element forming the sample application opening is at least partially discontinuous and the surface opposite to the notch is exposed. It also concerns the use of the said analytical test element for the determination of an analyte in a liquid as well as a method for the determination of an analyte in a liquid sample with the aid of the said analytical test element.
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Citations
32 Claims
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1. Analytical test element comprising:
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an inert cover, an inert carrier having a first surface, a detection element being formed to permit liquid penetration therein and including at least one reagent contained in the detection element, the detection element including a second surface facing the first surface, and a capillary channel including a sample opening and a vent opening and extends in a direction of capillary transport from the sample opening to at least an edge of the detection element that is nearest to the vent opening, wherein the capillary channel is formed by the inert carrier, the detection element, and the inert cover, the cover and the detection element being mounted end to end in such a way that the capillary channel extends without interruption from the sample application opening to the vent opening and a notch is positioned at an edge of the test element forming the sample opening so that a surface opposite to the notch is exposed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An analytical test apparatus comprising:
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an inert cover, an inert carrier having a first surface, and a detection element being formed to permit liquid penetration therein and including at least one reagent contained in the detection element, the detection element having a second surface facing the first surface, the channel including a sample opening and a vent opening and extends in a direction of capillary transport from the sample opening to at least an edge of the detection element that is nearest to the vent opening, wherein the capillary channel is formed by the inert carrier, the detection element, and the inert cover, the cover and the detection element being mounted end to end in such a way that the capillary channel extends without interruption from the sample application opening to the vent opening and a notch is positioned at an edge of the test element forming the sample opening so that one side of the edge is discontinuous. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A method for determining an analyte in a liquid sample, the method comprising the steps of:
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providing an analytical test element including an inert cover, an inert carrier having a first surface, a detection element being formed to permit liquid penetration therein and including at least one reagent contained in the detection element, the detection element including a second surface facing the first surface, and a capillary channel including a sample opening and a vent opening and extends in a direction of capillary transport from the sample opening to at least an edge of the detection element that is nearest to the vent opening, wherein the capillary channel is formed by the inert carrier, the detection element, and the inert cover, the cover and the detection element being mounted end to end in such a way that the capillary channel extends without interruption from the sample application opening to the vent opening and a notch is positioned at an edge of the test element forming the sample opening so that a surface opposite to the notch is exposed, contacting the test element with the liquid sample at the notch so that the liquid sample is transported by capillary forces into the channel, and observing the liquid sample in the detection element to determine whether optical changes in the detection element exist following contact with the liquid sample, wherein the changes relate to a presence of the analyte in the liquid sample. - View Dependent Claims (29, 30, 31, 32)
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Specification