Method and apparatus for personal isolation and/or protection

Details Method and apparatus for personal isolation and/or protection Method and apparatus for personal isolation and/or protection

2006-01-17

2009-10-06

Douglas, Steven O (Department: 3771)

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

Reexamination Certificate

active

07597101

ABSTRACT:
The present invention may create and maintain a pressure differential in the vicinity of the user's nasopharynx. A portable filter and pressurized air source subjects the region of the user's nasopharynx to positive or negative pressured air. Positive pressure prevents exposure to surrounding air while negative pressure isolates those around the user from potential toxins or pathogens exhaled from the user. With positive pressure, surrounding air is displaced preventing exposure to ambient air in most instances. With negative pressure, exhaled air is evacuated from the nasopharynx, filtered and returned to the user's surroundings to prevent exposure to those around the user. Such devices may be incorporated into garments, accessories or existing isolation devices (e.g., face masks) to improve efficacy. Alternatively, the device may also be attached to an air source in the user's vicinity and provide filtration of the air prior to delivery to the region surrounding the user.

REFERENCES:
patent: 3976063 (1976-08-01), Henneman et al.
patent: 4172454 (1979-10-01), Warncke et al.
patent: 4846166 (1989-07-01), Willeke
patent: 2003/0005934 (2003-01-01), Japuntich et al.

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