Patent ID: 8114360

Claim:
A single-use fractionating device ( 53 ) for fractionating or fragmenting genetically altered, infectious, malodorous, chemically corrosive, or other substances ( 55 ) to be kept sterile, comprising a fractionating device ( 1 ) inserted between openings of first and second vessels or laboratory test vessels ( 27 , 43 ) located axially over top of each other, with the first vessel ( 27 ) being connected to a fractionating head ( 3 ) via a body ( 11 ) and the second vessel ( 43 ) being connected with a housing ( 31 ) of the fractionating device that cooperates with the fractionating head ( 3 ), and the fractionating head ( 3 ) connected to the first vessel ( 27 ) is rotated around an axis (A) in reference to the second vessel ( 43 ) and the housing ( 31 ) of the fractionating device such that passage of the substances between the fractionating head ( 3 ) and the housing ( 31 ) due to the rotation causes fractionation of the substances, and at the body ( 11 ) of the fractionating device, a dually conical opening is provided, with the fractionating head ( 3 ) engaging from a bottom thereof with a frustum-shaped cutting element ( 7 ) and cooperating with a feeding screw ( 5 ) supported by the fractionating head ( 3 ) at a top thereof, the feeding screw having a tapered thread that expands from the top thereof toward the frustum-shaped cutting element.