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US 2010/0145229 A1Published application
Lancet device having capillary action
AssigneeRoche Diagnostics Operations, Inc.
InventorsEdward P. Perez, Steven N. Roe
Life of this patent
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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.
Claims20
A method, comprising:
- forming an incision in tissue by extending a lancet from a capillary member of an integrated unit, wherein the lancet is located inside the capillary member before said forming the incision;
- partially withdrawing the lancet from the incision in which a portion of the lancet remains within the incision;
- drawing body fluid from the incision into a capillary space defined between the capillary member and the lancet while the lancet is partially withdrawn within the incision, wherein the lancet acts as a focal point for drawing the body fluid into the capillary space;
- and
- depositing the body fluid onto a test strip that is disposed in the capillary space.
2 more elements
A method, comprising:
- forming an incision in tissue with an integrated unit that includes a lancet received in a capillary member by moving the lancet longitudinally between a retracted position where the lancet is retracted inside the capillary member and an extended position where the lancet extends from the capillary member;
- moving the lancet from the extended position to a partially withdrawn position where a portion of the lancet remains within the incision;
- drawing body fluid from the incision into a capillary space defined between the capillary member and the lancet while the lancet is at the partially withdrawn position;
- depositing the body fluid onto a test strip that is disposed in the capillary space;
- and
- retracting the lancet to the retracted position after said drawing the body fluid.
3 more elements
Dependencies are inferred from the claim text.