Blood separation chamber with preformed blood flow passages and centralized connection to external tubing
First Claim
1. A blood separation chamber comprising a formed body, which, in use, rotates about a rotational axis, a first interior wall formed on the body, which extends circumferentially about the rotational axis to define a hub, inside and outside walls formed on the body, which extend circumferentially about the hub in a spaced apart relationship to define between them a separation channel, second interior walls formed on the body, which extend radially from the hub in a spaced apart relationship to define between them at least one passage that communicates with the separation channel to direct blood between the hub and the separation channel, and a connector formed on the body to couple exterior tubing to the hub in communication with the passage to convey blood to or from the passage during rotation of the formed base.
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Abstract
A blood separation chamber comprises a base that includes formed walls that define a hub. A separation channel extends about the hub. A flow passage extends between the hub and the separation channel. The hub enables attachment of external tubing to convey blood to and from the separation channel through the hub.
33 Citations
42 Claims
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1. A blood separation chamber comprising
a formed body, which, in use, rotates about a rotational axis, a first interior wall formed on the body, which extends circumferentially about the rotational axis to define a hub, inside and outside walls formed on the body, which extend circumferentially about the hub in a spaced apart relationship to define between them a separation channel, second interior walls formed on the body, which extend radially from the hub in a spaced apart relationship to define between them at least one passage that communicates with the separation channel to direct blood between the hub and the separation channel, and a connector formed on the body to couple exterior tubing to the hub in communication with the passage to convey blood to or from the passage during rotation of the formed base.
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25. A blood separation assembly comprising
a body comprising a hub, an annular separation channel circumferentially extending about the hub, at least one radial passage that directs fluid between the hub and the separation channel, and a hub connector formed on the body that communicates with the passage, an umbilicus comprising a body enclosing at least one fluid-conveying lumen, and an umbilicus connector carried by the body that communicates with the fluid-conveying lumen, and the umbilicus connector and the hub connector being mutually shaped to releasably mate to couple the fluid-conveying lumen in communication with the passage.
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35. A blood separation apparatus comprising
a molded base assembly defining a hub, an annular separation channel circumferentially extending about the hub, at least one radial passage that directs fluid between the hub and the separation channel, and a hub connector formed on the body that communicates with the passage, and an umbilicus assembly comprising a body enclosing at least one fluid-conveying lumen, and an umbilicus connector carried by the body that communicates with the fluid-conveying lumen, the umbilicus connector and the hub connector being mutually shaped to mate in a press fit, to thereby couple the fluid-conveying lumen in communication with the passage.
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41. A blood separation chamber for use in a blood centrifuge of the type that rotates an umbilicus in concert with a centrifuge rotor to prevent twisting of the umbilicus, the blood separation chamber comprising
a unitary base including formed walls that define a hub, a separation channel that extends about the hub, and a flow passage that extends between the hub and the separation channel, the hub being further formed to enable attachment of the umbilicus to convey blood to and from the separation channel through the hub, and a lid covering the base and closing the separation channel on a side opposite to the hub, the lid being formed to enable releasable attachment of the blood processing chamber as a unit to the centrifuge rotor for rotation to separate blood in the separation channel.
Specification