CPC A61M 5/3293 (2013.01) [A61M 5/14248 (2013.01); A61M 5/1454 (2013.01); A61M 5/158 (2013.01); A61M 5/162 (2013.01); A61M 5/3158 (2013.01); A61M 25/0102 (2013.01); A61M 2005/14252 (2013.01); A61M 2005/1585 (2013.01); A61M 2005/1586 (2013.01)] | 11 Claims |
1. A needle hub for a drug delivery device comprising:
a needle holder and a needle attached to the needle holder;
a needle actuation assembly configured to move the needle holder from a retracted position, to an insertion position, and back to the retracted position; and
a pressure interlock comprising an inlet configured to be in fluid communication with a fluid source, an outlet in fluid communication with the needle, and a lock member, the lock member having a first position where the lock member prevents actuation of the needle actuation assembly and a second position where the lock member allows actuation of the needle actuation assembly, wherein the lock member is moved from the first position to the second position based on a pressure within the pressure interlock.
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