Diagnostic device for determining particle production

G - Physics – 01 – N

Patent

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Details

G01N 33/497 (2006.01) A61B 5/097 (2006.01) G01N 15/10 (2006.01) G01F 1/34 (2006.01)

Patent

CA 2649442

Methods and devices to determine rate of particle production and the size range for the particles produced for an individual are described herein. The device (10) contains a mouthpiece (12), a filter (14), a low resistance one-way valve (16), a particle counter (20) and a computer (30). Optionally, the device also contains a gas flow meter (22). The data obtained using the device can be used to determine if a formulation for reducing particle exhalation is needed. This device is particularly useful prior to and/or following entry in a cleanroom to ensure that the cleanroom standards are maintained. The device can also be used to identify animals and humans who have an enhanced propensity to exhale aerosols (referred to herein as "over producers", "super-producers", or "superspreaders").

L'invention concerne des procédés et dispositifs visant à déterminer le taux de production de particules et la fourchette de taille des particules produites pour un individu. Le dispositif (10) contient une embouchure (12), un filtre (14), une valve unidirectionnelle de faible résistance (16), un compteur de particules (20) et un ordinateur (30). Eventuellement, le dispositif contient également un appareil de mesure d'écoulement de gaz (22). Les données obtenues à l'aide du dispositif peuvent s'utiliser pour déterminer si l'on a besoin d'une formulation permettant de réduire l'exhalation de particules. Ce dispositif est particulièrement utile avant et/ou après l'entrée dans une salle blanche pour s'assurer que les normes de salle blanche sont maintenues. On peut également utiliser le dispositif pour identifier les animaux et les êtres humains ayant une propension accrue à exhaler des aérosols (que l'on appelle ici 'surproducteurs', 'supraproducteurs' ou 'suprarépandeurs').

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