Lancet comprising a test region
View Patent ↗The invention relates to a lancet, comprising a base body ( 2 ), which has a test region ( 3 ) on an upper face for analyzing a body fluid sample, a lancing element ( 4 ) extending from the base body ( 2 ) for puncturing the skin of a patient, and a capillary structure ( 5 ) for transporting a body fluid sample from the lancing element ( 4 ) to the test region ( 3 ). According to the invention, the capillary structure ( 5 ) comprises a section that causes fluid to be transported in a direction that, in a top view of the upper face of the base body ( 2 ), has a component perpendicular to the longitudinal direction of the lancing element ( 4 ).
1. A lancet, comprising
a base body, which has a test region on an upper face for analyzing a body fluid sample,
a lancing element extending from the base body for puncturing the skin of a patient, and
a capillary structure for transporting a body fluid sample from the lancing element to the test region, wherein at least a section of the capillary structure is a capillary channel, and wherein
in a top view of the upper face, the test region is disposed laterally offset in relation to the longitudinal direction of the lancing element, and the capillary structure has a section that is configured to transport fluid sideways, and wherein
the base body comprises a coupling region for coupling the lancet to a lancing drive of a hand-held device,
a rectilinear starting section of the capillary structure is arranged in the lancing element, and
the coupling region is disposed so that a geometrical straight line, which is defined by the starting section of the capillary structure, intersects the coupling region,
wherein
the capillary channel has a bend with rounded corners or a curve and a cross-sectional surface, in the region of the bend or curve, that is no larger than in an adjoining section, and wherein
the coupling region is disposed in a straight line behind the lancing element and laterally beside the test region.
2. The lancet according to claim 1 , wherein the test region is disposed laterally offset by at least the width of the lancing element with respect to the longitudinal direction of the lancing element.
3. A lancet according to claim 1 , wherein the base body is plate-shaped.
4. A lancet according to claim 1 wherein the capillary structure is configured to cause fluid to be transported in a plane.
5. A lancet according to claim 1 , wherein the base body is integral with the lancing element.
6. The lancet according to claim 1 , wherein
the test region is disposed such that the geometrical straight line, which is defined by the starting section of the capillary structure, passes the test region at a distance.
7. A lancet according to claim 1 , wherein the lancing element is disposed eccentrically on the base body.
8. A lancet according to claim 1 , wherein the lancet comprises only a single test region.
9. A lancet carrier tape, comprising a plurality of lancets according to claim 1 disposed on the carrier tape.
10. A lancing system, comprising
lancets according to claim 1 , and
a lancing device, which comprises a lancing drive so as to cause the lancets to perform a rectilinear piercing movement, and a measuring unit for analyzing a body fluid sample in the test region.