Lancet comprising a test region

• US 8,333,713 B2
• Filed: 08/01/2011
• Issued: 12/18/2012
• Est. Priority Date: 02/12/2009
• Status: Active Grant

• Current Assignee: Roche Diabetes Care Inc. (Roche Holding AG)
• Original Assignee: Roche Diagnostics Operations Incorporated (Roche Holding AG)
• Inventors: Konya, Ahmet, Hoerauf, Christian
• Primary Examiner(s): SZMAL, BRIAN SCOTT
• Application Number:
  US13/195,536
• Publication Number:
  US 20110295154A1
• Time in Patent Office: 505 Days
• Field of Search: 600/583, 600/584, 435/4, 606181-183
• US Class Current: 600/583
• CPC Class Codes: A61B 5/150022 for capillary blood or interstitial fluid
• CPC Class Codes: A61B 5/150282 for piercing elements, e.g. blade, lancet, canula, needle
• CPC Class Codes: A61B 5/150358 Strips for collecting blood, e.g. absorbent optical reagent test strips G01N21/8483; chemical reagent test strips G01N33/4875, G01N33/52
• CPC Class Codes: A61B 5/150419 comprising means for capillary action
• CPC Class Codes: A61B 5/150435 Specific design of proximal end
• CPC Class Codes: A61B 5/150503 Single-ended needles hollow piercing element tip design A61B5/150396, needle sets for catheters A61M25/06, needles for bringing media into the body A61M5/32
• CPC Class Codes: A61B 5/15115 Driving means for propelling the piercing element to pierce the skin, e.g. comprising mechanisms based on shape memory alloys, magnetism, solenoids, piezoelectric effect, biased elements, resilient elements, vacuum or compressed fluids
• CPC Class Codes: A61B 5/15153 Multiple piercing elements stocked in a single compartment
• CPC Class Codes: A61B 5/15169 Characterized by a rolled strip
• CPC Class Codes: A61B 5/15171 Characterized by propelling the piercing element perpendicular to the direction of movement of the strip
• CPC Class Codes: A61B 5/157 Devices characterised by integrated means for measuring characteristics of blood

Abstract

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).

Claims

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.