Patent ID: 8083688
Filing Date: 2011-12-27
Classification: A61B

Abstract:
1. A method, comprising: providing a body fluid sampling device that includes lancing an incision in tissue with the lancet by extending the lancet from the capillary channel opening; drawing body fluid from the incision via capillary action into the capillary space, wherein the body fluid forms a meniscus in the capillary space; biasing the meniscus in an asymmetric manner with the hydrophilic region and the counterbore towards the testing element, wherein the counterbore works in conjunction with the hydrophilic region to bias the body fluid towards the testing element to use less of the body fluid than would be required without biasing the body fluid in the asymmetric manner; wherein the counterbore is angled in an asymmetric manner at the distal end portion of the capillary channel; wherein the capillary channel has a diameter; wherein the counterbore has a diameter larger than the diameter of the capillary channel; wherein the testing element is disposed between the counterbore and the hydrophilic region; wherein the hydrophilic region extends only from the capillary channel opening to the testing element, wherein the hydrophilic region ends at the testing element, wherein the hydrophilic region is absent along the capillary channel wall from the testing element towards the distal end portion; and wherein said biasing meniscus includes ceasing flow of the body fluid at the testing element with the counterbore.