Tape cassette and method for the manufacture thereof
View Patent ↗There is disclosed a tape cassette having a reeled-up carrier tape that carries at least one type of functional elements, namely test elements and/or puncturing elements, that are arranged at a distance from each other in a tape direction. The distances in the tape direction from a functional element to the next functional element of the same type change periodically in space at a period P. Moreover, there is disclosed a method for manufacture of a tape cassette of this type.
1. A tape cassette comprising:
a reeled-up carrier tape that carries non-uniformly distributed test elements with detection regions for analysis of a sample of a human or animal body fluid that are arranged at a distance from each other in a tape direction, wherein the distances in the tape direction from a test element to the next test element change periodically in space at a uniform or constant period P, wherein each period P comprises a plurality of test elements, and wherein each period P includes an identical number of test elements.
2. The tape cassette according to claim 1 , wherein the distances within period P change by more than a length of one test element as measured in the tape direction.
3. The tape cassette according to claim 1 , wherein the distances within period P vary at least 5%.
4. The tape cassette according to claim 1 , wherein the distances within period P vary at least 10%.
5. The tape cassette according to claim 1 , wherein within period P there is a difference between a largest distance and a smallest distance in the tape direction from a test element to the next test element of at least 5% of the smallest distance.
6. The tape cassette according to claim 5 , wherein the difference is at least 10%.
7. The tape cassette according to claim 1 , wherein within period P there is a difference between a largest distance and a smallest distance in the tape direction from a test element to the next test element of no more than 50% of the smallest distance.
8. The tape cassette according to claim 7 , wherein the difference is no more than 40%.
9. The tape cassette according to claim 7 , wherein the difference is no more than 35%.
10. The tape cassette according to claim 7 , wherein a deviation of the largest and the smallest distance, within period P and in the tape direction, from a test element to the next test element, from an average distance differs by at least half, said distance being calculated as the arithmetic mean of all distances, within period P and in the tape direction, from the test element to the next test element.
11. The tape cassette according to claim 10 , wherein the deviation from the average distance differs by at least a factor of two.
12. The tape cassette according to claim 1 , wherein the period P comprises at least 3 test elements.
13. The tape cassette according to claim 1 , wherein the period P comprises at most 8 test elements.
14. The tape cassette according to claim 1 , wherein the period P comprises at most 6 test elements.
15. The tape cassette according to claim 1 , wherein the period P comprises at most 5 test elements.
16. The tape cassette according to claim 1 , wherein the carrier tape comprises at least 10 periods P.
17. The tape cassette according to claim 1 , wherein the carrier tape comprises at most 30 periods P.
18. The tape cassette according to claim 1 , wherein the carrier tape carries puncturing elements arranged at a constant distance with respect to an associated test element.
19. The tape cassette according to claim 18 , wherein all puncturing elements are oriented in the same direction.
20. The tape cassette according to claim 1 , wherein the carrier tape comprises non-uniformly distributed position markers that define nominal positions for individual test elements or puncturing elements, and wherein at each of which one test element or puncturing element is arranged.
21. The tape cassette according to claim 20 , wherein the distance in the tape direction between position markers changes periodically in space.
22. A method of manufacturing a tape cassette, comprising:
arranging test elements as functional elements on a carrier tape at non-uniformly and at periodically changing distances from one another in a uniform or constant period P, wherein each period P comprises a plurality of functional elements, and wherein each period P includes an identical number of functional elements; and
reeling up the carrier tape for introduction into a cassette housing.
23. The method according to claim 22 , wherein position markers are provided non-uniformly and at pre-determined locations on the carrier tape first, and then the functional elements are arranged at positions on the carrier tape that are defined by the position markers.
24. The method according to claim 22 , further comprising arranging uniformly oriented puncturing elements on the carrier tape at the periodically changing distances.