Extracorporeal blood processing methods and apparatus
First Claim
1. A disposable assembly for use in an extracorporeal blood processing system, comprising:
- blood removal conduit for transferring whole blood from a donor;
blood return conduit for transferring uncollected blood components to a donor, a first portion of said blood removal conduit and a first portion of said blood return conduit being in direct fluid communication;
a single pressure sensor responsive to positive and negative pressure changes, said pressure sensor interconnected in direct fluid communication to one of said first portion of said blood removal conduit and said first portion of said blood return conduit, wherein said pressure sensor is responsive to pressure changes in said first portions of said blood removal conduit and blood return conduit.
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Accused Products
Abstract
An extracorporeal blood processing system is disclosed which includes a variety of novel components and which may be operated in accordance with a variety of novel methodologies. For instance, the system includes a graphical operator interface which directs the operator through various aspects of the apheresis procedure. Moreover, the system also includes a variety of features relating to loading a blood processing vessel into a blood processing channel and removing the same after completion of the procedure. Furthermore, the system also includes a variety of features relating to utilizing a blood priming of at least portions of the apheresis system in preparation for the procedure. In addition, the system includes a variety of features enhancing the performance of the apheresis system, including the interrelationship between the blood processing vessel and the blood processing vessel and the utilization of high packing factors for the procedure.
189 Citations
18 Claims
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1. A disposable assembly for use in an extracorporeal blood processing system, comprising:
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blood removal conduit for transferring whole blood from a donor; blood return conduit for transferring uncollected blood components to a donor, a first portion of said blood removal conduit and a first portion of said blood return conduit being in direct fluid communication; a single pressure sensor responsive to positive and negative pressure changes, said pressure sensor interconnected in direct fluid communication to one of said first portion of said blood removal conduit and said first portion of said blood return conduit, wherein said pressure sensor is responsive to pressure changes in said first portions of said blood removal conduit and blood return conduit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A disposable assembly for use in an extracorporeal blood processing system, comprising:
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blood removal conduit for transferring whole blood from a donor; blood return conduit for transferring uncollected blood components to a donor, said blood removal conduit being fluidly connected to said blood return conduit; a first blood component conduit for transferring a separated first blood component; a molded cassette member having; an integral internal reservoir for accumulating uncollected blood components and interconnected to said blood return conduit; a first integral internal passageway partially defining said first blood component conduit; a first flexible tubing line interconnected at a first end to said first integral internal passageway, and interconnected at a second end to said integral internal reservoir; a second flexible tubing line interconnected at a first end to said first integral internal passageway; and positioning means for supportably engaging first end portions of both said first and second flexible tubing lines to maintain said first end portion of said first flexible tubing line spaced from said first end portion of said second flexible tubing line. - View Dependent Claims (17, 18)
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Specification