An insertion device, generally used with an infusion set, including a needle being adapted for puncturing at one end and including at the opposite end a hub. The hub includes a handle part and a guard part that are capable of securing the needle through the use of locks. Locking structures are used to...http://www.google.de/patents/US20060173410?utm_source=gb-gplus-sharePatent US20060173410 - Insertion device