Patent ID: 7967779
Filing Date: 2011-06-28
Classification: A61M

Abstract:
1. A method for combining a liquid and a powder to form a mixture, comprising: a. providing an enclosure; b. providing a primary piston, slidably mounted within said enclosure, wherein said primary piston divides said enclosure into a first volume on a first side of said primary piston and a second volume on a second side of said primary piston; c. providing a volume of liquid initially located within said first volume; d. providing a volume of powder initially located within said second volume; e. providing a passage from said first side of said primary piston to said second side of said primary piston; f. providing a removable barrier preventing movement of said liquid through said passage; g. providing a plunger movably mounted within said enclosure, wherein the motion of said plunger opens said removable barrier, thereby allowing said volume of liquid to flow through said passage into said volume of powder, thereby forming said mixture; h. moving said plunger, thereby opening said removable barrier and forcing said liquid into said second volume and into said powder, thereby forming said mixture; and i. forming a seal between a portion of said plunger and said primary piston once said mixture is formed so that further motion of said plunger propels said sealed primary piston into said second volume.