Portable drug mixing and delivery device and associated methods
A portable auto-injector configured to store a dry medication separately from a liquid component, wherein removal of a cap operates a first actuation mechanism which opens a valve between a first and second chamber that are slidably movable relative to each other and thus allows for the initiation of a mixing step prior to injection. An extendable needle guard is provided over the delivery assembly which prevents premature injection as well as inadvertent sticks or other cross contamination of a needle. The needle guard can also form part of a secondary trigger mechanism which injects the mixed components after the mixing stage is complete.
1. A drug mixing system comprising:
a housing;
a first chamber and second chamber disposed in the housing, wherein at least one chamber is slidably movable relative to the other;
a first medicament component provided in the first chamber;
a second medicament component provided outside the first chamber;
a valve disposed between the first and second chambers;
an actuation device having a pre-loaded energy source, the actuation device being in direct mechanical communication with the valve and wherein the actuation device is configured to allow the valve to alternate between a closed and open state in a first actuation stage, wherein activating the actuation device allows one of the chambers to slidably move relative to the other within the housing during the first actuation stage; and
a first displacement mechanism disposed in the first chamber and in mechanical communication with the actuation device.
2. A drug mixing system of claim 1 , further comprising a delivery assembly configured to be in fluid communication with the second chamber.
3. A drug mixing system comprising:
a housing;
a first chamber and second chamber disposed in the housing, wherein at least one chamber is slidably movable relative to the other;
a first medicament component provided in the first chamber;
a second medicament component provided outside the first chamber;
a valve disposed between the first and second chambers;
an actuation device having a pre-loaded energy source, the actuation device being in direct mechanical communication with the valve and wherein the actuation device is configured to allow the valve to alternate between a closed and open state in a first actuation stage, wherein activating the actuation device allows one of the chambers to slidably move relative to the other within the housing during the first actuation stage;
a first displacement mechanism disposed in the first chamber and in mechanical communication with the actuation device; and
a delivery assembly configured to be in fluid communication with the second chamber.