Powder dispersion system
| DWPI Title: Aerosolize powder dispersion method for e.g. dry powder inhaler, involves ejecting powder from syringe by movement of piston of syringe toward tip of syringe into suction connection of air eductor |
| Abstract: A powder dispersion method and apparatus comprising an air eductor and a powder dispensing syringe inserted into a suction connection of the air eductor. |
| Use: Aerosolize powder dispersion method for an aerosol powder dispersion system e.g. TSI Incorporated's small scale powder disperser, fluidized bed, and dry powder inhaler. |
| Advantage: The method enables economically providing dispersion rates of 170 mg/minute. The method enables dispersing powdered material with a size range down to about a micron at a rate of approximately 170 mg/minute. The dispersion system is housed in a case with wheels to facilitate portability. The housing maintains contents to be clean in a controlled environment while directing the particulate flow away from ground. |
| Novelty: The method involves providing an air eductor, and inserting a powder dispensing syringe (23) into a suction connection (16) of the air eductor. Aerosolize powder is supplied to the syringe by using a linear pump e.g. syringe pump, to supply the powder to the syringe. The powder is ejected from the syringe by movement of a piston of the syringe toward a tip of the syringe into the suction connection of the air eductor, where the air eductor is provided with an air eductor holder. |
| Filed: 10/17/2007 |
| Application Number: US2007873689A |
| Tech ID: SD 10507.1 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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