CPC A61M 5/31535 (2013.01) [A61M 2005/206 (2013.01); A61M 2005/247 (2013.01); A61M 2205/13 (2013.01); A61M 2205/50 (2013.01); A61M 2205/581 (2013.01); A61M 2205/582 (2013.01); A61M 2205/583 (2013.01); A61M 2205/586 (2013.01); A61M 2205/587 (2013.01)] | 20 Claims |
1. A drug delivery device comprising:
a housing having a proximal end and a distal end;
an activation mechanism disposed at the proximal end of the housing;
a drive mechanism disposed in the housing the drive mechanism including a biasing member;
a drug container disposed in the housing, the drug container defining a longitudinal drug container axis;
a fluid pathway connection disposed in the housing, the fluid pathway connection including a piercing member defining a longitudinal piercing member axis;
a needle insertion mechanism disposed in the distal end of the housing, the needle insertion mechanism including an insertion needle defining a longitudinal insertion needle axis and further including an insertion biasing member retained in a compressed state at the distal end of the housing,
wherein the longitudinal drug container axis, the longitudinal piercing member axis, and the longitudinal insertion needle axis are substantially coaxial; and
a plunger seal disposed in the drug container, wherein the biasing member of the drive mechanism is configured to apply a force on the plunger seal in response to actuation of the activation mechanism, the force directed toward a distal end of the drug container, and
wherein upon actuating the activation mechanism, the insertion biasing member decompresses, thereby driving and causing the insertion needle to extend in a distal direction toward the distal end of the housing.
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