Liquid medicine ejection device

Details Liquid medicine ejection device Liquid medicine ejection device

2006-08-31

2010-12-28

Douglas, Steven O (Department: 3771)

Surgery

Liquid medicament atomizer or sprayer

C128S200220, C128S204180

Reexamination Certificate

active

07856975

ABSTRACT:
There is provided a liquid medicine ejection device to eject liquid medicine into an inhalation flow path in the form of liquid droplets, thereby to allow a user to inhale the liquid medicine through a suction portion. In the liquid medicine ejection device is an ejection means, which communicates with a liquid medicine storage section, for ejecting the liquid medicine in the form of liquid droplets from an ejection opening. A pressure variable means changes a pressure in the liquid medicine storage section in accordance with a change of pressure in the inhalation flow path connected to the ejection opening of the ejection means and the suction portion. According to the liquid medicine ejection device of the present invention, it is possible to prevent ejection failure caused by a negative pressure applied to the ejection means, thereby enabling reliable inhalation.

REFERENCES:
patent: 5404871 (1995-04-01), Goodman et al.
patent: 6196219 (2001-03-01), Hess et al.
patent: 2001/0042927 (2001-11-01), Rock
patent: 2002/0046750 (2002-04-01), Gonda et al.
patent: 2002/0065685 (2002-05-01), Sasaki et al.
patent: 2004/0050383 (2004-03-01), Cox et al.
patent: WO 95/01137 (1995-01-01), None
patent: WO 02/04043 (2002-01-01), None

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