A tissue penetrating system includes a plurality of cartridges, each with a distal port and a proximal port. A plurality of penetrating members are provided, each being coupled to a cartridge. Each penetrating member has a sharpened distal tip and a shaft portion slidably disposed within the cartridge....http://www.google.ca/patents/US20030199910?utm_source=gb-gplus-sharePatent US20030199910 - Method and apparatus for penetrating tissue
