Patent ID: 8353892

Claim:
A method for simultaneous delivery of first and second substances, said method comprising the steps of: (A) obtaining or providing a device that comprises; a handle; a syringe barrel supporting structure attached to the handle and constructed to support the barrels of first and second syringes; a syringe plunger driving assembly engageable with the plungers of the first and second syringes and a screw mechanism comprising a threaded rotatable shaft, wherein the syringe plunger driving assembly comprises an upper member and a lower member, at least one of said upper and lower members being moveable relative to the other to cause the syringe plunger driving assembly to transition back and forth between i) an open configuration wherein the plungers of the syringes may be inserted into the syringe plunger driving assembly and the threads of the threaded rotatable shaft do not engage any corresponding threads on the syringe plunger driving assembly and ii) a closed position wherein the plungers of the syringes are engaged by the syringe plunger driving assembly and threads of the threaded rotatable shaft are engaged with corresponding threads on the syringe plunger driving assembly such that subsequent rotation of the shaft will drive the syringe plunger driving assembly in the distal direction thereby causing the plungers of the syringes to advance further into the barrels of the syringes; (B) loading a quantity of the first substance within the barrel of a first syringe having a barrel and a plunger; (C) loading a quantity of the second substance within the barrel of a second syringe having a barrel and a plunger; (D) with the syringe plunger driving assembly in its open configuration, placing the first syringe and second syringes into the device such that the barrel supporting structure supports the barrels of the first and second syringes and the plungers of the first and second syringes are positioned within the syringe plunger driving assembly and, thereafter, transitioning the syringe plunger driving assembly to its closed configuration; (E) grasping the handle and positioning the device; and (F) causing the threaded rotatable shaft to rotate, thereby advancing the syringe plunger driving assembly in a distal direction, thereby advancing the syringe plungers to within the barrels of the first and second syringes, thereby simultaneously expelling the first and second substances from the first and second syringes.