Patent ID: 7141058

Claim:
A body fluid sampling device for extracting bodily fluid from an anatomical feature, said device comprising: a penetrating member driver for driving a penetrating member to create a wound to extract said bodily fluid; a light source positioned to indicate a point of sampling where said wound will be created, said light source indicating said point of sampling with a beam of light and a sample chamber that includes electrodes, a volume no greater than 1 μL and an analyte detecting member, the sample chamber being positioned to receive fluid from a wound created by said penetrating member, and determine a concentration of an analyte in the fluid using a sample of less than 1 μL of the fluid, wherein when the penetrating member is removed from the sample chamber, the electrodes remain in the sample chamber and the volume of the sample chamber is less than 1 μL; a position sensor coupled to the penetrating member drive, the position sensor utilizing position information of the penetrating member to determine a depth of penetration through a skin surface, the depth of penetration providing a volume of sample of less than 1 μL in the sample chamber.