Cell washing chamber for blood processing centrifuge
AssigneeTerumo BCT, Inc.
InventorsBriden Ray Stanton, Ryan D. Rykhus, Rachel Michelle Von Seggern, Ashely Ann Marcolina
Life of this patent
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Abstract
A frustro-conical chamber for separating particles in a fluidized bed for blood component or cell separation. The chamber is characterized by an injection-directing surface for directing inflowing fluid along a frustro-conical wall of the chamber. A dam adjacent the cell-injection port may be circumferentially disposed within the chamber and may have its maximum height adjacent an injection port, and the height may diminish away from the injection port. The injection directing surface may comprise a shelf extending into the interior of the chamber from the injection port, thereby impeding fluid flow in the direction of an outlet port.
Claims19
A chamber for separating particles from a liquid, the chamber comprising:
- a first side wall defining a first volume, the first volume being frustro-conical;
- a second side wall defining a second volume located above the first volume;
- a first port in fluid communication with the first volume, wherein the first port is located at a junction between the first side wall and the second side wall;
- an injection-directing surface configured to direct inflowing fluid from the first port along a frustro-conical portion of the first side wall;
- a second port in fluid communication with the first volume, wherein the second port is located at an apex of the first volume;
- and
- a third port in fluid communication with the second volume, wherein the third port is located in an upper portion of the second volume, above the second port;
- and
- a dam adjacent the first port, the dam including the injection-directing surface, and the dam configured to prevent flow of particles in liquid into the second volume, the dam at least partially defining a channel for flow of particles away from the second volume, the dam having a maximum height adjacent to the first port, and the dam diminishing in height away from the first port.
The A chamber for separating particles from a liquid, the chamber comprising:
- a first side wall defining a first volume, the first volume being frustro-conical;
- a second side wall defining a second volume located above the first volume;
- a first port in fluid communication with the first volume, wherein the first port is located at a junction between the first side wall and the second side wall;
- an injection-directing surface configured to direct inflowing fluid from the first port along a frustro-conical portion of the first side wall;
- a second port in fluid communication with the first volume, wherein the second port is located at an apex of the first volume;
- a third port in fluid communication with the second volume, wherein the third port is located in an upper portion of the second volume, above the second port;
- and
- a shelf including the injection-directing surface, the shelf being generally planar and being perpendicular to an axis of the chamber, the axis being defined as a line from the second port to the third port.
Dependencies are inferred from the claim text.