Impulse chamber for jet delivery device

  • US 20070049873A1
  • Filed: 07/26/2006
  • Published: 03/01/2007
  • Est. Priority Date: 01/26/2004
  • Status: Abandoned Application
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First Claim
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1. An impulse chamber unit (1, 2, 3) comprising:

  • a deformable chamber portion (10, 50) having an outer surface, the outer surface being substantially free, a variable-volume impulse chamber (11, 55) defined at least partially by the deformable chamber portion and adapted for containing a volume of a flowable drug, an outlet nozzle (23, 61) in fluid communication with the impulse chamber and being adapted to be arranged against a skin surface of a subject, and an inlet (33, 39, 51) in fluid communication with the impulse chamber, wherein deformation of the chamber portion (10, 50) reduces the volume of the impulse chamber.

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