Plasmapheresis Centrifuge Bowl
AssigneeHaemonetics Corporation
InventorTaylor Korytko
Life of this patent
Estimating the term…
Abstract
A plasmapheresis bowl for the separation and collection of plasma includes a core and a feed tube that increase the bowl efficiency and reduce foaming within the plasma. The core may have a cylindrical body and a ledge located within the interior of the core. The ledge extends radially inward from the core and defines, at least partially, a collection chamber within the plasmapheresis bowl. The core also has ribs that extend above the top of core body and create flow paths that allow fluid to enter the interior of the cylindrical body and collection chamber. The feed tube has a flow path extending through it that fluidly connects an inlet port on the plasmapheresis centrifuge. A first skirt member on the feed tube has a smooth angled surface that helps to reduce foaming.
Claims52
A core for a plasmapheresis bowl comprising:
- a cylindrical body defining the core and an interior of the core;
- a ledge located within the interior of the core between a proximal end and a distal end of the cylindrical body, the ledge extending radially inward from an inner diameter of the core and having a top surface that defines, at least partially, a collection chamber within the plasmapheresis bowl;
- and
- a plurality of ribs located on and spaced about a proximal portion of the cylindrical body, the plurality of ribs extending above the proximal end of the cylindrical body, thereby creating flow paths between each of the plurality of ribs, the flow paths allowing fluid to enter the interior of the cylindrical body and the collection chamber.
A feed tube for a plasmapheresis centrifuge bowl comprising:
- a tubular member extending between a proximal portion end and a distal end, the tubular member having a flow path extending therethrough, the flow path fluidly connecting an inlet port on the plasmapheresis centrifuge bowl and an interior of the plasmapheresis centrifuge bowl;
- and
- a first skirt member extending radially outward from the tubular member, the first skirt member having a first surface generally perpendicular to the tubular member and an angled surface extending radially outward and distally from the first surface, the angled surface being smooth.
A plasmapheresis bowl comprising:
- an outer body rotatable about a longitudinal axis of the centrifuge bowl, the outer body having a main body defining an interior cavity, a neck portion extending proximal to the main body, and a shoulder connecting the main body and the neck portion;
- a core located within and rotatable with the outer body, the core having:
- a cylindrical body defining the core and an interior of the core,
- a ledge located within the interior of the core between a proximal end and a distal end of the cylindrical body, the ledge extending radially inward from an inner diameter of the core and having a top surface that defines, at least partially, a collection chamber within the plasmapheresis bowl,
- a plurality of ribs located on and spaced about a proximal portion of the cylindrical body, the plurality of ribs extending above the proximal end of the cylindrical body, thereby creating flow paths between each of the plurality of ribs, the flow paths allowing fluid to enter the interior of the cylindrical body and collection chamber;
- a separation region located between the core and the outer body, rotation of the centrifuge bowl separating the whole blood within the separation region into a first blood component and a second blood component;
- an inlet port for introducing whole blood into the plasmapheresis bowl;
- a feed tube fluidly connected to and extending distally from the inlet port toward the bottom of the outer body, the feed tube configured to introduce the whole blood into the plasmapheresis bowl;
- an outlet port for extracting a first blood component out of the centrifuge bowl;
- and
- a rotary seal fluidly coupling the inlet port and outlet port to the outer body.
Dependencies are inferred from the claim text.