Extracorporeal blood handling system with automatic flow control and methods of use
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Abstract
Apparatus for processing blood in an extracorporeal circuit with automatic flow control is provided in which error conditions are sensed and system operation is modulated responsive to the error conditions. The apparatus includes an extracorporeal blood processing system, at least one sensor that senses the presence or absence of gas or monitors venous pressure, and a controller operably coupled to the blood processing system to selectively reduce pump speed or to reconfigure flow paths within the blood processing system responsive to the sensor output.
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Citations
40 Claims
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1-28. -28. (canceled)
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29. A method of handling trigger conditions in an extracorporeal circuit for processing blood, comprising:
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providing a blood processing system having a pump, a filter, an oxygenator, a sensor and a controller, the blood processing system having an inlet to receive blood from a patient via a venous line and an outlet for reperfusing blood to the patient via an arterial line;
detecting the presence of air in the venous line or the blood processing system with the sensor and generating an output; and
evaluating the output of the sensor using the controller; and
modulating operation of the blood processing system responsive to the output while retaining some forward flow through the arterial line to the patient. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification