Multi-chambered fluid mixing apparatus and method

An apparatus for mixing two or more fluid substances, the apparatus comprising:

• (a) an elongate primary chamber including a tube, the tube containing a first substance, the primary chamber including a primary chamber dispensing end and a primary chamber non-dispensing end;
• (b) an elongate secondary chamber substantially aligned with and attached to the primary chamber, the secondary chamber including a non-rigid bladder configured for containing a second substance, the secondary chamber including a secondary chamber dispensing end and a secondary chamber non-dispensing end;
• (c) a back plug configured for longitudinal movement along the primary chamber, wherein such longitudinal movement toward the primary chamber dispensing end displaces at least a portion of the first substance out of the primary chamber and at least a portion of a second substance out of the primary chamber;
• (d) an engagement member attached to the primary chamber at a location along the dispensing end of the primary chamber;
• (e) a dispensing tip removably attachable to the engagement member, the dispensing tip including a mixing chamber that, substantially when the back plug is moved toward the primary chamber dispensing end, causes substantial mixing of the first substance from the primary chamber with a second substance from the secondary chamber;
• (f) a fill port located along the outer surface of the primary chamber, the fill port configured for fluid communication through the fill port to the secondary chamber such that the secondary chamber may be filled with a second substance by insertion of a second substance through the fill port;
• and
• (g) a barrier structure configured for substantially obstructing fluid communication between the fill port and the secondary chamber.

A method for mixing at least two fluid substances to form a mixture, the method comprising the steps of:

• (a) providing a mixing apparatus comprising:
• (i) an elongate primary fluid storage zone having been pre-filled with a first substance;
• (ii) an elongate secondary fluid storage zone longitudinally aligned with the primary fluid storage zone for storing a second substance;
• (iii) a mixing zone;
• and
• (iv) a separation barrier obstructing the first substance and the second substance from entering the mixing zone;
• (b) inserting a second substance into the secondary fluid storage zone;
• (c) breaching the separation barrier;
• and
• (d) forcing the first substance and the second substance, substantially simultaneously, to the mixing zone.