Patent ID: 8197421

Claim:
A body fluid sampling system for use on a tissue site, the system comprising: a controllable drive force generator; a feedback loop coupled to the controllable drive force generator a plurality of penetrating members operatively coupled to said controllable drive force generator, said controllable drive force generator moving each of said members along a path out of a housing having a penetrating member exit into said tissue site, stopping in said tissue site, and withdrawing out of said tissue site each of a penetrating member at least partially positioned adjacent to an analyte detecting member in a sample chamber, each sample chamber configured to receive body fluid from a wound in tissue created by a penetrating member, and each analyte detecting member configured to determine analyte levels using a body fluid sample of less than about 1 microliter; a flexible support member carrying said penetrating members parallel to each other on its top to define a linear array, said support member being movable to move each of said penetrating members to a launch position associated with said force generator; and said controllable drive force generator and feedback loop configured to provide a controllable velocity trajectory into the tissue and out of said tissue.