Multipharmaceutical syringe

Details Multipharmaceutical syringe Multipharmaceutical syringe

A - Human Necessities

61

M

A61M 5/19 (2006.01) A61M 5/31 (2006.01) A61M 5/315 (2006.01) A61M 5/34 (2006.01) A61M 39/00 (2006.01) A61M 5/24 (2006.01) A61M 5/32 (2006.01)

Patent

CA 2101949

2101949 9215345 PCTABS00016 A multipharmaceutical delivery system, such as a syringe (2) or a topical pharmaceutical applicator, suitable for a simultaneous delivery of a mixture (124) of two or more mixed pharmaceuticals (52, 120) in selected amounts and proportions, includes a body (4, 180) with first and second variable volume reservoirs (24, 26), containing the first and second liquids or other flowable materials, such as creams and salves. The reservoirs are connected to a variable volume accumulator chamber (31) through check valves (28) to permit liquid to flow from the reservoirs into the accumulator chamber but not the reverse. A delivery head, such as a needle assembly (78) or a spray nozzle assembly (196), is selectively fluidly coupled to the accumulator chamber by an exit path (106, 202) formed in the body. After the two liquids are driven into the accumulator chamber, typically one liquid at a time, the delivery head is fluidly coupled to the accumulator chamber and the accumulator piston (30) is actuated, thus forcing the liquid mixture from the accumulator chamber, through the exit path and through the delivery head during an injection or other application of the mixture.

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