Palm activated drug delivery device

A device configured to administer a medication, the device comprising:

• a lower housing that includes a housing latch;
• a syringe supported by the lower housing and being configured to retain a medication, the syringe having a needle configured to be inserted into tissue;
• a needle guard that is movable relative to the lower housing along a first direction from a first position to a second position so as to expose the needle;
• an upper housing supported relative to the lower housing, the upper housing configured to receive a manual force and move with respect to the lower housing along a second direction opposite the first direction from a pre-use position to a dispensed position in response to the manual force;
• a plunger rod carried by the upper housing and movable with the upper housing so as to advance relative to the syringe when the upper housing is moved along the second direction, wherein advancement of the plunger rod relative to the syringe causes the syringe to deliver the medication out the needle;
• and
• a middle housing coupled between the lower housing and the upper housing, wherein the middle housing includes a body that is exposed between the upper housing and the lower housing when the upper housing is in the pre-use position, and substantially completely covered by the upper housing when the upper housing is in the dispensed position,
• wherein the housing latch releasable interferes with the upper housing when the upper housing is in the pre-use position so as to prevent the upper housing from moving toward the dispensed position, and the movement of the needle guard toward the second position, causes the interference to be removed, thereby allowing the upper housing to move from the pre-use position to the dispensed position.

A device configured to administer a medication, the device comprising:

• a lower housing that includes a housing latch;
• a syringe supported by the lower housing and being configured to retain a medication, the syringe having a needle configured to be inserted into tissue;
• a syringe retainer that is configured to receive the syringe and support the syringe, the syringe retainer including a body and a pair of elastically flexible legs that extend from the body along the second direction, the elastically flexible legs being spaced from each other along a direction that is perpendicular to the second direction so as to define a gap between the elastically flexible legs;
• a needle guard that is movable relative to the lower housing along the first direction from a first position to a second position so as to expose the needle;
• an upper housing supported relative to the lower housing, the upper housing configured to receive a manual force and move with respect to the lower housing along a second direction opposite the first direction from a pre-use position to a dispensed position in response to the manual force;
• and
• a plunger rod carried by the upper housing and movable with the upper housing so as to advance relative to the syringe when the upper housing is moved along the second direction, wherein advancement of the plunger rod relative to the syringe causes the syringe to deliver the medication out the needle,
• wherein the housing latch releasably interferes with the upper housing when the upper housing is in the pre-use position so as to prevent the upper housing from moving toward the dispensed position, and the movement of the needle guard toward the second position, causes the interference to be removed, thereby allowing the upper housing to move from the pre-use position to the dispensed position.