Variable valve apparatus and methods

Details Variable valve apparatus and methods Variable valve apparatus and methods

C - Chemistry, Metallurgy

12

N

C12N 15/10 (2006.01) B01L 3/00 (2006.01) G01N 30/00 (2006.01)

Patent

CA 2549081

Sample processing devices with variable valve structures and methods of using the same are disclosed. The valve structures allow for removal of selected portions of the sample material located within the process chamber. Removal of the selected portions is achieved by forming an opening in a valve septum at a desired location. The valve septums may be large enough to allow for adjustment of the location of the opening based on the characteristics of the sample material in the process chamber. If the sample processing device is rotated after the opening is formed, the selected portion of the material located closer to the axis of rotation exits the process chamber through the opening. The remainder of the sample material cannot exit through the opening because it is located farther from the axis of rotation than the opening.

L'invention concerne des dispositifs de traitement d'échantillons à structures de clapet variable, ainsi que de procédés d'utilisation correspondants. Les structures de clapet permettent d'enlever des parties sélectionnées du matériau échantillon situé dans la chambre de traitement. Les parties sélectionnées sont enlevées par formation d'une ouverture dans un septum de clapet, en un point voulu. Les septums de clapet peuvent être suffisamment important pour permettre d'ajuster la situation de l'ouverture sur la base des caractéristiques du matériau échantillon dans la chambre de traitement. Si le dispositif de traitement d'échantillon est entraîné en rotation, une fois l'ouverture formée, la partie sélectionnée du matériau se trouvant plus proche de l'axe de rotation sort de la chambre de traitement, par l'ouverture. Le matériau échantillon restant ne peut passer par l'ouverture, car il est plus éloigné de l'axe de rotation que l'ouverture.

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