Lancet device having capillary action
First Claim
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1. A device for sampling body fluid, comprising:
- a) a main body defining a capillary channel;
b) a lancet disposed within said capillary channel and defining an annular space between said lancet and said main body;
c) wherein said lancet is selectively advancable and retractable; and
, d) wherein said capillary channel is dimensioned to draw a body fluid into said annular space through capillary action.
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Abstract
A device for sampling body fluid, the device comprising, a main body, a lancet disposed within the main body, a carrier disposed within the main body fixedly attached to the lancet, a biasing means in communication with the lancet and the carrier, an annular space disposed within the main body adjacent the lancet, and a means for measuring a body fluid. Wherein the means for measuring the body fluid may include micro-porous test strips, an electronic testing device, an optical/reflectance testing measuring device, or a visual inspection.
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Citations
43 Claims
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1. A device for sampling body fluid, comprising:
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a) a main body defining a capillary channel;
b) a lancet disposed within said capillary channel and defining an annular space between said lancet and said main body;
c) wherein said lancet is selectively advancable and retractable; and
,d) wherein said capillary channel is dimensioned to draw a body fluid into said annular space through capillary action. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A system for sampling and testing a body fluid, comprising:
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a) a main body defining a capillary channel;
b) a lancet disposed within said capillary channel and defining an annular space between said lancet and said main body;
c) wherein said lancet is selectively advancable and retractable;
d) wherein said capillary channel is dimensioned to draw a body fluid into said annular space through capillary action; and
,e) a testing means for testing the body fluid drawn into said capillary channel. - View Dependent Claims (23, 24, 25, 26, 27, 28, 30, 31)
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29. A device for sampling body fluid, comprising:
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a) a base unit;
b) a disposable main body mountable to said base unit and defining a capillary channel;
c) a lancet disposed within said capillary channel and defining an annular space between said lancet and said main body;
d) injection means associated with said base unit and releasably coupleable to said lancet, wherein said injection means is operable to selectively advance and retract said lancet; and
,e) wherein said capillary channel is dimensioned to draw a body fluid into said annular space through capillary action.
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32. A method of obtaining a fluid sample from the body of a person, comprising the steps of:
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a) placing an apparatus having a defined capillary channel adjacent tissue at a desired sample location;
b) advancing a lancet disposed within said capillary channel so that said lancet incises tissue at an incision point in the desired sample location;
c) retracting said lancet into said capillary channel; and
,d) acquiring body fluid expressed from the body at the incision point into said capillary channel through capillary action. - View Dependent Claims (33, 34, 35, 36, 38, 42, 43)
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37. A device for measuring blood glucose levels, the device comprising:
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a) a main body having a generally cylindrical shape, a proximal end and a distal end;
b) a lancet disposed within said main body, wherein an annular space is disposed about said lancet and defined by said main body, and said lancet protrudes beyond said distal end of said main body; and
,c) a means for testing blood glucose levels in communication with said annular space.
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39. A method for sampling a body fluid, comprising the steps of:
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a) providing a testing apparatus with a main body defining a capillary channel, and a lancet disposed within said capillary channel and defining an annular space between said lancet and said main body;
b) placing the testing apparatus over a site to be lanced;
c) advancing said lancet into the site thereby creating an incision; and
,d) withdrawing a body fluid into said annular space through capillary action.
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- 40. The method according to 39 further including the step of withdrawing said lancet from said incision prior to withdrawing the body fluid.
Specification