Extracorporeal blood processing methods and apparatus
First Claim
1. A device for use in an extracorporeal blood processing system in which blood is removed from an individual for processing and at least some components of the blood are returned to the individual, comprising:
- a cassette member having a reservoir for accumulating the blood components in a first mode and for supplying said accumulated blood components for return to the individual in a second mode separate from said first mode;
a first ultrasonic sensor positionable adjacent to an upper section of said reservoir, wherein said first ultrasonic sensor senses when the blood components have accumulated to a predetermined first level in said reservoir and provides a first signal in response thereto, whereupon said first mode ends and said second mode is initiated; and
a second ultrasonic sensor positionable adjacent to a lower section of said reservoir, wherein said second ultrasonic sensor provides a second signal until it senses said accumulated blood components have been removed down to a predetermined second level in said reservoir, whereupon said second mode ends and said first mode is initiated.
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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.
152 Citations
17 Claims
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1. A device for use in an extracorporeal blood processing system in which blood is removed from an individual for processing and at least some components of the blood are returned to the individual, comprising:
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a cassette member having a reservoir for accumulating the blood components in a first mode and for supplying said accumulated blood components for return to the individual in a second mode separate from said first mode; a first ultrasonic sensor positionable adjacent to an upper section of said reservoir, wherein said first ultrasonic sensor senses when the blood components have accumulated to a predetermined first level in said reservoir and provides a first signal in response thereto, whereupon said first mode ends and said second mode is initiated; and a second ultrasonic sensor positionable adjacent to a lower section of said reservoir, wherein said second ultrasonic sensor provides a second signal until it senses said accumulated blood components have been removed down to a predetermined second level in said reservoir, whereupon said second mode ends and said first mode is initiated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification