Patent ID: 7131342
Filing Date: 2006-11-07
Classification: A61B,B01L,Y10T

Abstract:
1. A method for ensuring that a sensing device is substantially filled with a sample of fluid comprising: providing a device for sampling a fluid, comprising a pre-chamber having an interior surface and a first volume, the pre-chamber being capable of exerting a first capillary force, the device further comprising a sensing chamber in fluid communication with the pre-chamber, the sensing chamber comprising electrodes and having an interior surface and a second volume, the sensing chamber being capable of exerting a second capillary force, wherein the first volume is not less than the second volume, and wherein a differential exists between the capillary forces, the differential being sufficient to cause flow of fluid from the pre-chamber to substantially fill the sensing chamber; contacting the device with the fluid for a sufficient period of time to allow the fluid to enter the pre-chamber in a volume equal to or greater than the second volume; and allowing the sample to flow from the pre-chamber to the sensing chamber, such that the sensing chamber is substantially filled, wherein at least one of the pre-chamber and the sensing chamber further comprises a mesh material, wherein the mesh material contributes to the capillary force of at least one of the pre-chamber and the sensing chamber.