Filtration and extraction device and method of using the same

Details Filtration and extraction device and method of using the same Filtration and extraction device and method of using the same

B - Operations, Transporting

01

D

B01D 35/00 (2006.01) B01D 29/05 (2006.01) C12M 1/12 (2006.01)

Patent

CA 2334584

The present invention involves a simple, disposable, manual filtration and extraction device and method of use that provides a sample directly to an analytical method. The device is capable of providing a clarified liquid ready for analysis or disposal as appropriate for the specific analyte of interest, and is capable of capturing particulate materials and allowing for further extraction of those particles directly with the device. Once extracted, the device will deliver a liquid containing the analyte of interest to an analytical method. The filtration and extraction device includes a pliant body having an open top end and an internal wall defining an inner chamber. A sealing mechanism is adapted to seal the open top end of the body. A gradient filter assembly including at least one filter is supported by a support assembly carried by the body. The pliant body is adapted to be squeezed by a user's fingers so as to impart a positive pressure in the chamber sufficient to cause a fluid in the chamber to flow through the filter assembly.

L'invention concerne un dispositif simple, jetable, de filtration et d'extraction manuelles, ainsi que son mode d'utilisation. Le dispositif permet de préparer un échantillon auquel on peut appliquer directement une technique d'analyse. Il permet d'obtenir un liquide clarifié prêt à être analysé ou rejeté, suivant l'analyte d'intérêt, ainsi que de capturer les matériaux particulaires et d'extraire directement lesdites particules. Après extraction, le dispositif fournit un liquide contenant l'analyte d'intérêt, utilisable pour une technique d'analyse. Le dispositif de filtration et d'extraction comprend un corps souple, avec une extrémité supérieure ouverte et une paroi interne définissant une chambre interne. Un mécanisme de fermeture permet de fermer l'extrémité supérieure du corps. Un ensemble filtre à gradient, comprenant au moins un filtre, est supporté par un ensemble support posé sur le corps. Le corps souple est conçu pour être pressé par les doigts de l'utilisateur, ce qui génère à l'intérieur de la chambre une pression positive suffisante pour faire passer le fluide qu'elle contient à travers l'ensemble filtre.

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