Density phase separation device

摘要

A mechanical separator for separating a fluid sample into first and second phases is disclosed. The mechanical separator includes a float having a passageway extending between first and second ends thereof with a pierceable head enclosing the first end of the float, a ballast longitudinally moveable with respect to the float, and a bellows extending between a portion of the float and a portion of the ballast. The bellows is adapted for deformation upon longitudinal movement of the float and the ballast, with the bellows isolated from the pierceable head. The float has a first density and the ballast has a second density greater than the first density. The bellows is structured for sealing engagement with a cylindrical wall of a tube, and the pierceable head is structured for application of a puncture tip therethrough. The separation device is suitable for use with a standard medical collection tube.

主权项

1. A mechanical separator for separating a fluid sample into first and second phases within a tube, the mechanical separator comprising:
a float comprising a passageway extending between first and second ends thereof with a pierceable head enclosing the first end of the float; a ballast longitudinally movable with respect to the float; and a bellows extending between a portion of the float and a portion of the ballast, the bellows adapted for deformation upon longitudinal movement of the float and the ballast, the bellows isolated from the pierceable head, wherein both the pierceable head and the bellows comprise a thermoplastic elastomer.