Patent ID: 9533090
Date: 2017-01-03
CPC Classifications: A61M,B01D,B01L

Claim:
1. A method for isolating at least two fractions of a multiple component material comprising: loading the multiple component material into a separation chamber of a separation device between a valve mounted at a fixed position in the separation chamber and a first end of the device, the first end is opposite to a second end and a sidewall extends between the first end and the second end to define the separation chamber having an interior volume wherein the valve includes a screen, a valve activation member, and a seal, and wherein each of the screen, the valve activation member, and the seal define a through hole at an axial center thereof; wherein the through hole is in fluid communication with apertures at an end of the valve activation member proximate to the second end; and wherein an extraction tube is seated in the through hole and is connected to an extraction port of the separation device; centrifuging the separation device such that the valve moves to an open position in response to gravitational forces exerted on the device to permit a first fraction of the multiple component material of a first density to pass through the valve toward the second end; ceasing centrifugation of the separation device to permit the valve to move to a closed position, thus isolating the first fraction of the first density between the valve and the second end and isolating a second fraction of a second density that is less dense than the first density between the valve and the first end; and withdrawing at least one of the first fraction and the second fraction from the separation chamber for use in a subsequent procedure.