One aspect of the invention provides a glucose monitor having a plurality of tissue piercing elements, each tissue piercing element having a distal opening, a proximal opening and interior space extending between the distal and proximal openings; a sensing area in fluid communication with the proximal...http://www.google.com/patents/US20060219576?utm_source=gb-gplus-sharePatent US20060219576 - Devices, Systems, Methods And Tools For Continuous Glucose Monitoring