Patent ID: 7708152
Filing Date: 2010-05-04
Classification: A61M,B01D,B01F,B04B

Abstract:
1. A portable, enclosed, disposable, self-contained, single-use PRP separator suitable for office use or emergency use for trauma victims, the portable separator comprising: a single centrifugal separator unit having an integral erythrocyte separating volume; a motor that is capable of separating erythrocytes from blood to produce PRP in less than 3 minutes with a total power consumption of less than 500 mAh by spinning the single centrifugal separator; a container enclosing and sealingly containing both the single centrifugal separator unit and the motor; and an access port through the container operable to allow access to a central depression in the single centrifugal separator unit; wherein the single centrifugal separator unit has a centrifugal drum having an inner wall surface with an upper edge and a lower edge, a drum bottom, and a central axis, the drum bottom defining the central depression and a floor sloping downward from the lower edge to the central depression; wherein the inner wall surface of the centrifugal drum is sloped outwardly from the drum bottom at an angle of from 1° to 15° from the central axis; wherein the single centrifugal separator unit consists essentially of the centrifugal drum and an outer annular erythrocyte capture chamber; wherein the upper edge of the centrifugal drum is surrounded by the outer, annular erythrocyte capture chamber, the erythrocyte capture chamber including an inner wall that contacts or is shared with the centrifugal drum, an outer wall, and a lower wall, the outer wall having a top edge with an elevation higher than the inner wall, a capture volume of the erythrocyte capture chamber being the volume below the top of the inner wall, the capture volume being sized to retain the total volume of separated erythrocytes in the blood, whereby erythrocytes moving outward through the plasma during centrifugation flow are retained against the outer wall of the erythrocyte capture chamber during centrifugation and collect in the capture volume of the erythrocyte capture chamber when centrifugation is ended; wherein the motor has a drive axis connected to the single centrifugal separator unit, the motor having the capacity to rotate the single centrifugal separator unit at a speed of at least 2,000 rpm for 120 seconds.