Multiple Drug Injection Apparatus

Abstract

The present invention is a fluid dispensing device particularly suited to medicine but also having many other applications. The user manually and selectively dispenses any of one or more fluids, typically a drug, contained within the device. Generally, the device comprises a frame that holds multiple hypodermic syringes and channels the dispensed fluids through a manifold. A flushing solution, for example a saline solution, enters the manifold, flows past each of the points where the syringes input into the manifold and continues to flow out of the device to a patient where the flushing solution and dispensed fluid are delivered to a patient.

1 . A fluid dispensing device comprising:
 a) a frame assembly comprising a plate with bores around the periphery of the plate where said bores are dimensioned to securely accept a vessel;   b) a vessel assembly comprising a vessel sealed on one end by a movable piston and the opposite end connected to a manifold assembly;   c) a manifold assembly comprising a receiver that accepts a vessel and a channel that channels the dispensed fluid from each of said vessels through a port out of the device.   
     
     
         2 . A fluid dispensing device set forth in  claim 1  further characterized in that vessel is removably connected to said manifold assembly. 
     
     
         3 . A fluid dispensing device set forth in  claim 1  further characterized in that a one-way valve is inserted between the vessel assembly and the manifold assembly preventing backflow of fluid from the manifold assembly into the vessel assembly. 
     
     
         4 . A fluid dispensing device set forth in  claim 1  further characterized in that the force to dispense the fluid contained in the vessel is supplied by a human hand depressing a head connected to a shaft connected to said piston. 
     
     
         5 . A fluid dispensing device set forth in  claim 1  further characterized in that said manifold assembly has a port for an external fluid source to enter said manifold and flush through said channel and exit through a second port. 
     
     
         6 . A fluid dispensing device set forth in  claim 1  further characterized in that there is a chamber between the vessel and the common port out of the device that acts as a bubble trap. 
     
     
         7 . A method of using the fluid dispensing device as set forth in  claim 1  further characterized in that the fluids dispensed are drugs pre-selected for a specific medical procedure. 
     
     
         8 . A method of using the fluid dispensing device as in  claim 1  where the fluids dispensed are lubricants, food products, gasses, liquids, chemical reagents, tints, colorants, stains, paints or gels. 
     
     
         9 . A fluid dispensing device comprising:
 a) a frame assembly comprising a bore to hold a vessel and a post to connect the frame assembly to a manifold assembly;   b) a vessel assembly comprising a vessel containing a fluid to be dispensed and a means to depress a piston into the vessel thereby dispensing the fluid contained inside the vessel;   c) a manifold assembly that channels the fluids to be dispensed from said vessel through a port out of the device.   
     
     
         10 . A fluid dispensing device set forth in  claim 9  further characterized in that said manifold assembly has a port for an external fluid source enter the manifold assembly and flush fluids dispensed into the manifold assembly through a second port out of the device. 
     
     
         11 . A fluid dispensing device set forth in  claim 9  further characterized in that one way valves are between each of said vessels and said manifold assembly thereby preventing flow from the manifold assembly into the vessel. 
     
     
         12 . A fluid dispensing device set forth in  claim 9  further characterized in that said manifold assembly includes a chamber that acts as a bubble trap.