Surgery – Liquid medicament atomizer or sprayer – Pre-pressurized container holding medicament
Patent
1998-02-23
2000-03-21
Weiss, John G.
Surgery
Liquid medicament atomizer or sprayer
Pre-pressurized container holding medicament
12820323, 12820324, 12820524, A61M 1100, A61M 1508, A62B 902
Patent
active
060390425
ABSTRACT:
A medication inhalation apparatus for use with an MDI inhaler includes an elongated housing for receiving a plume of medication particles ejected by the MDI inhaler, a mouthpiece, and an inhalation valve disposed between the mouthpiece and the housing. An exhalation valve in the mouthpiece allows exhalation through the mouthpiece, presenting very little resistance to the exhalation effort of the patient. An adapter receives and stabilizes a mouthpiece of the MDI inhaler. The inhalation valve includes an inhalation membrane hanging adjacent to a valve seat. Exhalation into the mouthpiece presses the inhalation membrane against the valve seat, forcing exhaled gas through the exhalation valve. Inhalation causes the inhalation membrane to swing away from the valve seat and mostly out of a path of the medication plume. Impaction of medication particles against the inhalation membrane is avoided, and very little resistance is presented to the inhalation effort of the patient.
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"Relative Volumes of Respirable Drug Particles Delivered by the ACE.TM. MDI Spacer as Compared to Other MDI Delivery Devices", by David C. Robson and Ronald N. McHenry, 6 pages.
Instrumentation Industries Inc. product information for Metered Dose Inhaler Adapters, 3 pages.
Monaghan Medical Corporation product information for the AeroVent Aerosol Delivery System, 2 pages.
Martin Todd M.
Thayer Medical Corporation
Weiss John G.
LandOfFree
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