Test element with elastically mounted lancet
View Patent ↗This invention generally relates to a method for producing an analytical system, and to a analytical system for detecting an analyte in a body fluid. The analytical system comprises a test element and a lancet which is movable relative to the test element and which is received on the test element. The lancet is connected to the test element via an elastomer spring.
1. An analytical system for detecting an analyte in a body fluid, the system comprising:
a test strip; and
a lancet movable relative to the test strip and received on the test strip, wherein a lancet body of the lancet is connected elastically and directly to the test strip via an elastomer spring, wherein the elastomer spring comprises at least two cords of elastomer material and wherein one end of one of the at least two cords is secured centrally on the lancet body and the other end of the one of the at least two cords is affixed on one of two longitudinal sides of the test strip and one end of the other of the at least two cords is secured centrally on the lancet body and the other end of the other of the at least two cords is affixed on the other of two longitudinal sides of the test strip.
2. The system according to claim 1 , wherein the lancet is oriented parallel to a longitudinal axis of the test strip.
3. The system according to claim 1 , wherein the elastomer spring has a resilient area that extends on both sides of the lancet.
4. The system according to claim 3 , wherein the resilient area is designed in the form of a cord, or a thread or a strip.
5. The system according to claim 3 , wherein the resilient area of the elastomer spring is defined by incisions, punches or cuttings made in the elastomer material.
6. The system according to claim 3 , wherein the elastomer spring is made of a rubber elastic material.
7. The system according to claim 3 , wherein the elastomer spring, in the resilient area, has a reduced thickness of less than 200 μm.
8. The system according to claim 3 , wherein the resilient area extends from the lancet body of the lancet to a first longitudinal side and to a second longitudinal side of the test strip.
9. The system according to claim 8 , wherein on the first longitudinal side and on the second longitudinal side of the test strip, there are first and second widened areas, respectively, which serve as spring abutments of the elastomer spring.
10. The system according to claim 9 , wherein the first and second widened areas are designed in a thickness which corresponds to ¼ to 5/4 of the thickness of the lancet.
11. The system according to claim 9 , wherein the first and second widened areas of the test strip, on the first and second longitudinal sides of the test element, are offset, with respect to the longitudinal axis of the test strip, in relation to a plastic sheath of the lancet.
12. The system according to claim 1 , wherein the lancet has a lancet tip that is flush with a capillary which extends on a front face or on a rear face of the test strip and which opens out on a front edge of the lancet system.
13. The system according to claim 1 , wherein the lancet is sealed in a sterile manner by a film pouch made from a sterile protective band of film.
14. The system according to claim 13 , wherein the film pouch is connected to the test strip along a peripheral edge thereof.
15. The system according to claim 13 , wherein the film pouch is provided, on a front edge of the lancet system, with a fold.
16. The system according to claim 1 , wherein a recess contour is created in a surface of the test strip, inside the recess a blunt end of the lancet can be exposed.
17. The system according to claim 1 , wherein the lancet is designed in the form of a needle with a circular cross section or is designed as a flat lancet which has a substantially rectangular cross section.
18. The system according to claim 1 , wherein the length of the lancet is shorter than the longitudinal extent of the test strip to which the lancet is elastically connected.
19. An analytical system for detecting an analyte in a body fluid, the system comprising:
a test strip; and
a lancet movable relative to the test strip and received on the test strip, wherein a lancet body of the lancet is connected elastically and directly to the test strip via an elastomer spring, wherein the elastomer spring comprises a cord of elastomer material of which the cord's ends are secured to opposite longitudinal sides of the test strip and wherein the lancet body is secured centrally on the elastomer spring.