SYSTEM FOR WITHDRAWING SMALL AMOUNTS OF BODY FLUID
First Claim
Patent Images
1. System for withdrawing small amounts of body fluid, comprising:
- a drive unit which has a holder which is moved from a first position into a second position when the drive unit is activated;
a disposable lancing unit which has a holding area that is removably positioned in the holder, the disposable lancing unit having an elongate capillary structure, the proximal end of the elongate capillary structure comprising at least one capillary channel for transporting body fluid being connected to the holding area and the distal end of the elongate capillary structure being suitable for piercing skin;
wherein the distal end of the elongate capillary structure is located outside the skin when the holder is arranged in said first position and in said second position is inserted into the skin up to the puncture depth; and
wherein the at least one capillary channel is open to the outside in an area which comprises at least a part of the longitudinal extension of the capillary structure.
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Abstract
A system is provided for withdrawing small amounts of body fluid from an animal or human. The system includes a holder and a disposable lancing unit attached to the holder. The lancing unit also includes an open capillary channel for transporting the body fluid and piercing the skin.
212 Citations
25 Claims
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1. System for withdrawing small amounts of body fluid, comprising:
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a drive unit which has a holder which is moved from a first position into a second position when the drive unit is activated;
a disposable lancing unit which has a holding area that is removably positioned in the holder, the disposable lancing unit having an elongate capillary structure, the proximal end of the elongate capillary structure comprising at least one capillary channel for transporting body fluid being connected to the holding area and the distal end of the elongate capillary structure being suitable for piercing skin;
wherein the distal end of the elongate capillary structure is located outside the skin when the holder is arranged in said first position and in said second position is inserted into the skin up to the puncture depth; and
wherein the at least one capillary channel is open to the outside in an area which comprises at least a part of the longitudinal extension of the capillary structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method, comprising:
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collecting body fluid with an open capillary channel of a lancing unit that is open from below the surface of the skin to above the surface of the skin; and
transporting the body fluid in the open capillary channel via capillary action to a detection zone of the lancing unit. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A method of manufacturing a disposable lancing unit, comprising:
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creating an open capillary groove in the surface of a holding area from a distal end of a lancing tip to a detection zone, the capillary groove being configured to draw body fluid via capillary action;
leaving the open capillary groove uncovered along the entire length of the lancing tip; and
applying a reagent to the detection zone. - View Dependent Claims (19, 20)
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21. An apparatus, comprising:
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means for creating an incision in skin;
means for collecting body fluid from both under the skin and on the skin; and
means for evaluating the body fluid. - View Dependent Claims (22)
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23. A kit, comprising:
a disposable lancing unit including a lancing tip configured to pierce tissue, a detection zone containing a reagent configured to detect analyte in body fluid from the tissue, a capillary groove in the disposable lancing unit extending from the lancing tip to the detection zone to transport the body fluid via capillary action to the detection zone, and the capillary groove being uncovered and empty of the reagent along the entire length of the lancing tip. - View Dependent Claims (24, 25)
Specification