Gas blender with auxiliary mixed gas outlet

Details Gas blender with auxiliary mixed gas outlet Gas blender with auxiliary mixed gas outlet

2011-08-30

2011-08-30

Bianco, Patricia M (Department: 3772)

Surgery

Respiratory method or device

Means for mixing treating agent with respiratory gas

C128S203140, C128S203250

Reexamination Certificate

active

08006692

ABSTRACT:
A gas blender with auxiliary mixed gas outlet for mixing a primary gas, generally air, and a secondary gas, generally oxygen, to obtain a mixed gas having several controlled characteristics. The gas blender may be incorporated into a Continuous Positive Airway Pressure (CPAP) device. The gas blender controls the mixing to produce the mixed gas having a predetermined mixture setpoint, generally an oxygen percentage, and a predetermined control setpoint, generally a pressure setpoint or flow rate setpoint. The gas blender provides an auxiliary mixed gas source for use by an auxiliary piece of equipment such as a nebulizer or resuscitation bag. The gas blender includes a primary gas inlet passageway, a secondary gas inlet passageway, a gas mixing apparatus, a mixed gas distribution passageway with an auxiliary mixed gas outlet, a gas sensor, a delivery sensor, a mixed gas delivery control valve, a mixed gas controlled passageway, and a controller.

REFERENCES:
patent: 5014694 (1991-05-01), DeVries
patent: 5878771 (1999-03-01), Mayeaux
patent: 6467478 (2002-10-01), Merrick et al.
patent: 2004/0040437 (2004-03-01), Cao et al.
patent: 2080884 (1997-06-01), None
patent: 9521406 (1995-08-01), None
patent: WO 2004/032727 (2007-04-01), None
PCT Search Report mailed Sep. 26, 2007; 10 pgs.
Russian Decision on Grant issued Nov. 29, 2010 (17 pages).

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