LANCET WITH CAPILLARY CHANNEL
First Claim
1. A lancet, comprising:
- a lancet body having a lancet tip for creating a puncture wound and a capillary channel to convey body fluid from a puncture wound in a conveyance direction, the capillary channel defining a slot that extends perpendicular to the conveyance direction and extends through the lancet body; and
a test area for optical examination of a body fluid sample conveyed by means of the capillary channel, the test area being configured as a section of the slot and comprising a transparent component with a wetting surface for wetting a body fluid sample to be examined.
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Accused Products
Abstract
The invention relates to a lancet having a lancet body with a lancet tip for creating a puncture wound and a capillary channel to convey body fluids out of the puncture wound in a direction of conveyance. The capillary channel is formed by a slot which runs through the entire lancet body perpendicular to the direction of conveyance, and a test area for optically inspecting a body fluid sample which is conveyed by the capillary channel. The test area is constructed as a section of the slot and has a transparent component with a moistening surface for moistening with a body fluid sample for inspection. The invention further relates to a pricking system comprising such a lancet and a pricking device for creating a puncture wound.
19 Citations
20 Claims
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1. A lancet, comprising:
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a lancet body having a lancet tip for creating a puncture wound and a capillary channel to convey body fluid from a puncture wound in a conveyance direction, the capillary channel defining a slot that extends perpendicular to the conveyance direction and extends through the lancet body; and a test area for optical examination of a body fluid sample conveyed by means of the capillary channel, the test area being configured as a section of the slot and comprising a transparent component with a wetting surface for wetting a body fluid sample to be examined. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A pricking system for creating a puncture wound, comprising:
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a lancet, the lancet comprising a lancet body having a lancet tip for creating a puncture wound and a capillary channel to convey body fluid from a puncture wound in a conveyance direction, the capillary channel defining a slot that extends perpendicular to the conveyance direction through the lancet body, the lancet body including a test area for optical examination of a body fluid sample conveyed by the capillary channel; a lancet drive for driving a puncturing movement of the lancet inserted in the pricking system; a light source and a detector for the optical examination of a body fluid sample in the test area; and a transparent component positioned in the test area, the transparent component having a wetting surface at a front side thereof, a first lateral face for coupling incoming light and a second lateral face for decoupling outgoing light, the first lateral face and the second lateral face being positioned obliquely to the front side, wherein during use of the lancet in the pricking system, light emitted from the light source impinges upon the oblique face of the transparent component and is then conveyed by total internal reflection through an interface region between the wetting surface and the body fluid sample wetting the wetting surface to the detector.
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14. A lancet, comprising:
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a lancet body having a lancet tip for creating a puncture wound and a test area for optical examination of a body fluid; a slot formed through the lancet body and extending from the tip into the test area, the slot defining a capillary to convey body fluid from the tip to the test area; and a transparent component positioned in the test area and having a wetting surface for wetting a body fluid sample to be examined. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification