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;
wherein said capillary channel is dimensioned to draw a body fluid into said annular space through capillary action;
at least one testing element in communication with said annular space;
wherein said testing element is a test strip; and
wherein said test strip is radially mounted around said lancet.
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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 spring in communication with the lancet and the carrier, an annular space disposed within the main body adjacent the lancet, and a testing device for measuring a body fluid. The testing device may include micro-porous test strips, an electronic testing device, an optical/reflectance testing measuring device, or a visual inspection.
330 Citations
47 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;
wherein said capillary channel is dimensioned to draw a body fluid into said annular space through capillary action; at least one testing element in communication with said annular space;
wherein said testing element is a test strip; and
wherein said test strip is radially mounted around said lancet.
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2. 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;
e) a testing means for testing the body fluid drawn into said annular space; and
a holder holding said testing means in said annular space. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. 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 and a lancet disposed in said capillary channel that together define a capillary space adjacent tissue at a desired sample location;
b) advancing the 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 space through capillary action. - View Dependent Claims (18, 19, 20, 21, 22)
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23. A body fluid sampling device, comprising:
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a body;
a lancet slidably received in the body to lance an incision in skin, wherein the lancet and the body define a capillary space that is sized to draw the body fluid via capillary action; and
a test means disposed in the capillary space to test the body fluid drawn by the capillary space. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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47. A system for sampling and testing a body fluid, comprising:
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a main body defining a capillary channel;
a lancet disposed within said capillary channel and defining an annular space between said lancet and said main body;
wherein said lancet is selectively advancable and retractable;
wherein said capillary channel is dimensioned to draw a body fluid into said annular space through capillary action;
a testing means for resting the body fluid drawn into said annular space; and
a retraction mechanism configured to retract said lancer, wherein said retraction mechanism includes a spring disposed in said annular space.
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Specification