公开(公告)号：CA992933A

公开(公告)日：1976-07-13

申请号：CA194218

申请日：1974-03-06

Applicant: COULTER ELECTRONICS

Inventor： BULL BRIAN S ,  PRONI OSCAR ,  MELNICK LORAN V

IPC: G01N33/48 ,  B04B5/02 ,  B04B5/04 ,  B04B13/00

Abstract: A centrifuge for production of platelet rich plasma by accelerated sedimentation of whole blood. The centrifuge is adapted to apply greater than gravity force laterally, that is, approximately perpendicular, to the long axis of a thin cylindrical container partially filled with whole blood. The centrifuge includes cam actuated timer means cyclically operating a centrifuge head in which the cylindrical containers are held. Drive means are provided to rotate the head and said timer means includes means controlling the coupling of said drive means with said head whereby said head is driven for a predetermined duration, the drive means deenergized and the head is uncoupled therefrom to a free rotational state during which a gradual slowdown is effected to permit the vertically oriented column of blood to return from the side of the container to the bottom smoothly and with mixing within the plasma and cell layers but not between the two layers. Also provided are alarm means for indicating the expiration of a predetermined time during which the head is at rest so as to enable the operator to be certain sufficient time has elapsed to accomplish the required degree of sedimentation.

公开(公告)号：CA1029985A

公开(公告)日：1978-04-25

申请号：CA217675

申请日：1975-01-09

Applicant: COULTER ELECTRONICS

Inventor： PRONI OSCAR ,  MELNICK LORAN V ,  HENDERSON WILLIAM T

IPC: B01F20060101 ,  B01F

公开(公告)号：DE2410720A1

公开(公告)日：1974-09-12

申请号：DE2410720

申请日：1974-03-06

Applicant: COULTER ELECTRONICS

Inventor： BULL BRIAN STANLEY ,  PRONI OSCAR ,  MELNICK LORAN V

IPC: G01N33/48 ,  B04B5/02 ,  B04B5/04 ,  B04B13/00

Abstract: A centrifuge for production of platelet rich plasma by accelerated sedimentation of whole blood. The centrifuge is adapted to apply greater than gravity force laterally, that is, approximately perpendicular, to the long axis of a thin cylindrical container partially filled with whole blood. The centrifuge includes cam actuated timer means cyclically operating a centrifuge head in which the cylindrical containers are held. Drive means are provided to rotate the head and said timer means includes means controlling the coupling of said drive means with said head whereby said head is driven for a predetermined duration, the drive means deenergized and the head is uncoupled therefrom to a free rotational state during which a gradual slowdown is effected to permit the vertically oriented column of blood to return from the side of the container to the bottom smoothly and with mixing within the plasma and cell layers but not between the two layers. Also provided are alarm means for indicating the expiration of a predetermined time during which the head is at rest so as to enable the operator to be certain sufficient time has elapsed to accomplish the required degree of sedimentation.