Patent ID: 6679841
Filing Date: 2004-01-20
Classification: A61B,Y10T

Abstract:
Method for collecting interstitial fluid and analyzing said fluid for an analyte, said method comprising the steps of:(a) providing a multiple-layer element comprising: (1) a layer that is capable of being placed in contact with the skin of a patient; (2) an overcoat layer that is coated over the skin-contacting layer; (3) a layer, substantially coplanar with the overcoat layer, that is capable of transporting interstitial fluid by means of chemically aided wicking; (4) a layer, overlying the interstitial fluid transporting layer, that is capable of being placed in contact with a meter, said layer having an opening therein through which light can be transmitted; (5) a layer in communication with the interstitial fluid transporting layer, which layer is capable of detecting the presence of analyte or measuring the amount of analyte in the fluid; (b) placing said element in contact with the skin; (c) providing a source of light; (d) transmitting light through said multiple-layer element such that said light causes an opening to be formed in the skin; (e) collecting interstitial fluid in said fluid transporting layer; (f) transporting interstitial fluid to said analyte detecting layer; (g) detecting the presence of an analyte or measuring the amount of analyte in the fluid.