Active air removal from an extracorporeal blood circuit
First Claim
1. An active air removal (AAR) system for purging air from an integrated extracorporeal blood circuit providing extracorporeal oxygenation of a patient'"'"'s blood during cardiopulmonary bypass surgery adapted to be performed on a patient in the presence of a perfusionist, the AAR system comprising:
- an air removal device incorporated in the extracorporeal blood circuit, the air removal device comprising;
an air removal device housing enclosing a chamber;
an air removal device purge port through the housing to the chamber;
an air sensor supported by the air removal device housing in relation to the chamber adapted to provide an air sensor signal indicative of the presence of fluid or air in the air removal device housing;
an air removal device purge line coupled to the air removal device purge port and extending to a purge line connector adapted to be coupled to a vacuum source to apply suction to the air removal device purge port to draw air therefrom;
an AAR controller having a purge valve adapted to receive a portion of the purge line and AAR controller circuitry to open or close the purge line, the AAR controller circuitry further comprising;
purge valve operating means for opening the purge valve in response to an air sensor signal indicative of the presence of air in the air removal device housing to allow air sensed in the air removal device to be purged through the purge line by the suction of the vacuum source;
error state determining means for monitoring operations and conditions of the AAR system and determining an error state of the AAR system;
alerting means for alerting the perfusionist of the error state; and
further wherein the AAR controller further comprises a mechanical release button interconnected with the purge valve adapted to enable manual opening of the purge valve by the perfusionist.
1 Assignment
0 Petitions
Accused Products
Abstract
A disposable, integrated extracorporeal blood circuit employed during cardiopulmonary bypass surgery performs gas exchange, heat transfer, and microemboli filtering functions in a way as to conserve volume, to reduce setup and change out times, to eliminate a venous blood reservoir, and to substantially reduce blood-air interface. Blood from the patient or prime solution is routed through an air removal device that is equipped with air sensors for detection of air. An active air removal controller removes detected air from blood in the air removal device. A disposable circuit support module is used to mount the components of the disposable, integrated extracorporeal blood circuit in close proximity and in a desirable spatial relationship to optimize priming and use of the disposable, integrated extracorporeal blood circuit. A reusable circuit holder supports the disposable circuit support module in relation to a prime solution source, the active air removal controller and other components.
158 Citations
53 Claims
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1. An active air removal (AAR) system for purging air from an integrated extracorporeal blood circuit providing extracorporeal oxygenation of a patient'"'"'s blood during cardiopulmonary bypass surgery adapted to be performed on a patient in the presence of a perfusionist, the AAR system comprising:
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an air removal device incorporated in the extracorporeal blood circuit, the air removal device comprising; an air removal device housing enclosing a chamber; an air removal device purge port through the housing to the chamber; an air sensor supported by the air removal device housing in relation to the chamber adapted to provide an air sensor signal indicative of the presence of fluid or air in the air removal device housing; an air removal device purge line coupled to the air removal device purge port and extending to a purge line connector adapted to be coupled to a vacuum source to apply suction to the air removal device purge port to draw air therefrom; an AAR controller having a purge valve adapted to receive a portion of the purge line and AAR controller circuitry to open or close the purge line, the AAR controller circuitry further comprising; purge valve operating means for opening the purge valve in response to an air sensor signal indicative of the presence of air in the air removal device housing to allow air sensed in the air removal device to be purged through the purge line by the suction of the vacuum source; error state determining means for monitoring operations and conditions of the AAR system and determining an error state of the AAR system; alerting means for alerting the perfusionist of the error state; and further wherein the AAR controller further comprises a mechanical release button interconnected with the purge valve adapted to enable manual opening of the purge valve by the perfusionist. - View Dependent Claims (2, 3)
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4. An active air removal (AAR) system for purging air from an integrated extracorporeal blood circuit providing extracorporeal oxygenation of a patient'"'"'s blood during cardiopulmonary bypass surgery adapted to be performed on a patient in the presence of a perfusionist, the AAR system comprising:
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an air removal device incorporated in the extracorporeal blood circuit, the air removal device comprising; an air removal device housing enclosing a chamber; an air removal device purge port through the housing to the chamber; an air sensor supported by the air removal device housing in relation to the chamber adapted to provide an air sensor signal indicative of the presence of fluid or air in the air removal device housing; an air removal device purge line coupled to the air removal device purge port and extending to a purge line connector adapted to be coupled to a vacuum source to apply suction to the air removal device purge port to draw air therefrom; an AAR controller having a purge valve adapted to receive a portion of the purge line and AAR controller circuitry to open or close the purge line, the AAR controller circuitry further comprising; purge valve operating means for opening the purge valve in response to an air sensor signal indicative of the presence of air in the air removal device housing to allow air sensed in the air removal device to be purged through the purge line by the suction of the vacuum source; error state determining means for monitoring operations and conditions of the AAR system and determining an error state of the AAR system; alerting means for alerting the perfusionist of the error state; wherein;
the AAR controller further comprises a fluid in line (FIL) sensor arranged with respect to the purge valve adapted to receive a portion of the purge line to provide a FIL sensor signal to the AAR controller circuitry;the error determining means determines if the FIL sensor signal indicates the presence of fluid in the purge line; the alerting means issues an alert that fluid is present in the purge line when the error determining means determines that the FIL sensor signal indicates the presence of fluid in the purge line; wherein the purge valve operating means is inhibited from opening the purge valve in response the air sensor signal indicative of the presence of air in the air removal device housing when the FIL sensor signal is determined to be indicative of fluid in the purge line; and wherein the AAR controller further comprises a mechanical release button interconnected with the purge valve adapted to enable manual opening of the purge valve by the perfusionist when the purge valve is closed in response to the FIL sensor signal indicative of fluid in the purge line.
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5. An active air removal (AAR) system for purging air from an integrated extracorporeal blood circuit providing extracorporeal oxygenation of a patient'"'"'s blood during cardiopulmonary bypass surgery adapted to be performed on a patient in the presence of a perfusionist, the AAR system comprising:
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an air removal device incorporated in the extracorporeal blood circuit, the air removal device comprising; an air removal device housing enclosing a chamber; an air removal device purge port through the housing to the chamber; an air sensor supported by the air removal device housing in relation to the chamber adapted to provide an air sensor signal indicative of the presence of fluid or air in the air removal device housing; an air removal device purge line coupled to the air removal device purge port and extending to a purge line connector adapted to be coupled to a vacuum source to apply suction to the air removal device purge port to draw air therefrom; an AAR controller having a purge valve adapted to receive a portion of the purge line and AAR controller circuitry to open or close the purge line, the AAR controller circuitry further comprising; purge valve operating means for opening the purge valve in response to an air sensor signal indicative of the presence of air in the air removal device housing to allow air sensed in the air removal device to be purged through the purge line by the suction of the vacuum source; error state determining means for monitoring operations and conditions of the AAR system and determining an error state of the AAR system; alerting means for alerting the perfusionist of the error state; and wherein;
the AAR controller further comprises a vacuum sensor arranged with respect to the purge line to provide a vacuum signal to the AAR controller circuitry indicative of vacuum in the purge line;the error state determining means determines if the sensed vacuum exceeds a minimum vacuum; and the alerting means issues an alert if the sensed vacuum does not exceed the minimum vacuum.
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6. An active air removal (AAR) system for purging air from an integrated extracorporeal blood circuit providing extracorporeal oxygenation of a patient'"'"'s blood during cardiopulmonary bypass surgery adapted to be performed on a patient in the presence of a perfusionist, the AAR system comprising:
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an air removal device incorporated in the extracorporeal blood circuit, the air removal device comprising; an air removal device housing enclosing a chamber; an air removal device purge port through the housing to the chamber; an air sensor supported by the air removal device housing in relation to the chamber adapted to provide an air sensor signal indicative of the presence of fluid or air in the air removal device housing; an air removal device purge line coupled to the air removal device purge port and extending to a purge line connector adapted to be coupled to a vacuum source to apply suction to the air removal device purge port to draw air therefrom; an AAR controller having a purge valve adapted to receive a portion of the purge line and AAR controller circuitry to open or close the purge line, the AAR controller circuitry further comprising; purge valve operating means for opening the purge valve in response to an air sensor signal indicative of the presence of air in the air removal device housing to allow air sensed in the air removal device to be purged through the purge line by the suction of the vacuum source; error state determining means for monitoring operations and conditions of the AAR system and determining an error state of the AAR system; alerting means for alerting the perfusionist of the error state; and wherein;
the AAR controller has an air sensor cable connector;an air removal device cable extends from the air sensor to a cable terminal coupled to the air sensor cable connector; the error state determining means comprises an electrical continuity checking circuit of the AAR controller circuitry coupled to the air sensor cable connector that provides a continuity signal indicative of continuity of the connection of the air removal device cable between the air sensor and the air sensor cable connector; and the alerting means issues an air removal device cable error alert if the continuity signal is not provided.
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7. An active air removal (AAR) system for purging air from an integrated extracorporeal blood circuit providing extracorporeal oxygenation of a patient'"'"'s blood during cardiopulmonary bypass surgery adapted to be performed on a patient in the presence of a perfusionist, the AAR system comprising:
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an air removal device incorporated in the extracorporeal blood circuit, the air removal device comprising; an air removal device housing enclosing a chamber; an air removal device purge port through the housing to the chamber; an air sensor supported by the air removal device housing in relation to the chamber adapted to provide an air sensor signal indicative of the presence of fluid or air in the air removal device housing; an air removal device purge line coupled to the air removal device purge port and extending to a purge line connector adapted to be coupled to a vacuum source to apply suction to the air removal device purge port to draw air therefrom; an AAR controller having a purge valve adapted to receive a portion of the purge line and AAR controller circuitry to open or close the purge line, the AAR controller circuitry further comprising; purge valve operating means for opening the purge valve in response to an air sensor signal indicative of the presence of air in the air removal device housing to allow air sensed in the air removal device to be purged through the purge line by the suction of the vacuum source; error state determining means for monitoring operations and conditions of the AAR system and determining an error state of the AAR system; alerting means for alerting the perfusionist of the error state; wherein;
the purge valve comprises a pinch valve having a valve slot receiving the portion of the purge line and a pinch rod adapted to be moved between a purge valve closed position extending into the slot to compress the purge line and a purge valve open position retracted out of the slot;the purge valve operating means is coupled to the pinch rod to move the pinch rod between the purge valve closed position and the purge valve open position; and wherein;
the error state determining means comprises;at least one pinch rod position sensor providing a pinch rod position signal indicative of the actual position of the pinch rod; and means responsive to the pinch rod position signal for determining a position error state of the purge valve or the purge valve operating means when the pinch rod position signal does not confirm that the pinch rod is in a purge valve open position or a purge valve closed position dictated by the purge valve operating means; and the alerting means issues a pinch rod position error alert in responsive to the determined position error state.
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8. An active air removal (AAR) system for purging air from an integrated extracorporeal blood circuit providing extracorporeal oxygenation of a patient'"'"'s blood during cardiopulmonary bypass surgery adapted to be performed on a patient in the presence of a perfusionist, the AAR system comprising:
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an air removal device incorporated in the extracorporeal blood circuit, the air removal device comprising; an air removal device housing enclosing a chamber; an air removal device purge port through the housing to the chamber; an air sensor supported by the air removal device housing in relation to the chamber adapted to provide an air sensor signal indicative of the presence of fluid or air in the air removal device housing; an air removal device purge line coupled to the air removal device purge port and extending to a purge line connector adapted to be coupled to a vacuum source to apply suction to the air removal device purge port to draw air therefrom; an AAR controller having a purge valve adapted to receive a portion of the purge line and AAR controller circuitry to open or close the purge line, the AAR controller circuitry further comprising; purge valve operating means for opening the purge valve in response to an air sensor signal indicative of the presence of air in the air removal device housing to allow air sensed in the air removal device to be purged through the purge line by the suction of the vacuum source; error state determining means for monitoring operations and conditions of the AAR system and determining an error state of the AAR system; alerting means for alerting the perfusionist of the error state; and wherein;
the error state determining means comprises;at least one purge valve state sensor providing a purge state signal indicative of the actual open or closed state of the purge valve; means responsive to the purge valve state signal for determining an error state of the purge valve or the purge valve operating means when the purge valve state signal does not confirm that the purge valve is in a commanded one of the purge valve open position and the purge valve closed position dictated by the purge valve operating means; and the alerting means issues a purge valve error alert in responsive to the determined position error state.
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9. An active air removal (AAR) system for purging air from an integrated extracorporeal blood circuit providing extracorporeal oxygenation of a patient'"'"'s blood during cardiopulmonary bypass surgery adapted to be performed on a patient in the presence of a perfusionist, the AAR system comprising:
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an air removal device incorporated in the extracorporeal blood circuit, the air removal device comprising; an air removal device housing enclosing a chamber; an air removal device purge port through the housing to the chamber; an air sensor supported by the air removal device housing in relation to the chamber adapted to provide an air sensor signal indicative of the presence of fluid or air in the air removal device housing; an air removal device purge line coupled to the air removal device purge port and extending to a purge line connector adapted to be coupled to a vacuum source to apply suction to the air removal device purge port to draw air therefrom; an AAR controller having a purge valve adapted to receive a portion of the purge line and AAR controller circuitry to open or close the purge line, the AAR controller circuitry further comprising; purge valve operating means for opening the purge valve in response to an air sensor signal indicative of the presence of air in the air removal device housing to allow air sensed in the air removal device to be purged through the purge line by the suction of the vacuum source; error state determining means for monitoring operations and conditions of the AAR system and determining an error state of the AAR system; alerting means for alerting the perfusionist of the error state; and wherein; the AAR controller further comprises a power supply adapted to be coupled to electrical mains power for providing operating power to the AAR controller circuitry and purge valve operating means; the error state determining means determines if the power supply is providing adequate operating power; and the alerting means issues a power supply error alert if the power supply is not providing adequate operating power. - View Dependent Claims (10, 11, 12, 13, 14)
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15. An active air removal (AAR) system for purging air from an integrated extracorporeal blood circuit providing extracorporeal oxygenation of a patient'"'"'s blood during cardiopulmonary bypass surgery adapted to be performed on a patient in the presence of a perfusionist, the AAR system comprising:
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an air removal device incorporated in the extracorporeal blood circuit, the air removal device comprising; an air removal device housing enclosing a chamber; an air removal device purge port through the housing to the chamber; an air sensor supported by the air removal device housing in relation to the chamber adapted to provide an air sensor signal indicative of the presence of fluid or air in the air removal device housing; an air removal device purge line coupled to the air removal device purge port and extending to a purge line connector adapted to be coupled to a vacuum source to apply suction to the air removal device purge port to draw air therefrom; an AAR controller having a purge valve adapted to receive a portion of the purge line and AAR controller circuitry to open or close the purge line, the AAR controller circuitry further comprising; purge valve operating means for opening the purge valve in response to an air sensor signal indicative of the presence of air in the air removal device housing to allow air sensed in the air removal device to be purged through the purge line by the suction of the vacuum source; error state determining means for monitoring operations and conditions of the AAR system and determining an error state of the AAR system; alerting means for alerting the perfusionist of the error state; and wherein; the alerting means formulates alert sound signals; and the AAR controller further comprises at least one sound emitter that emits audible alert sounds in response to the alert sound signals that can be heard by the perfusionist.
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16. An active air removal (AAR) system for purging air from an integrated extracorporeal blood circuit providing extracorporeal oxygenation of a patient'"'"'s blood during cardiopulmonary bypass surgery adapted to be performed on a patient in the presence of a perfusionist, the AAR system comprising:
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an air removal device incorporated in the extracorporeal blood circuit, the air removal device comprising; an air removal device housing enclosing a chamber; an air removal device purge port through the housing to the chamber; an air sensor supported by the air removal device housing in relation to the chamber adapted to provide an air sensor signal indicative of the presence of fluid or air in the air removal device housing; an air removal device purge line coupled to the air removal device purge port and extending to a purge line connector adapted to be coupled to a vacuum source to apply suction to the air removal device purge port to draw air therefrom; an AAR controller having a purge valve adapted to receive a portion of the purge line and AAR controller circuitry to open or close the purge line, the AAR controller circuitry further comprising; purge valve operating means for opening the purge valve in response to an air sensor signal indicative of the presence of air in the air removal device housing to allow air sensed in the air removal device to be purged through the purge line by the suction of the vacuum source; error state determining means for monitoring operations and conditions of the AAR system and determining an error state of the AAR system; alerting means for alerting the perfusionist of the error state; and wherein;
the alerting means formulates alert light signals; andthe AAR controller further comprises at least one light emitter that emits visual light in response to the alert light signals that can be seen by the perfusionist.
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17. A method of operating an active air removal (AAR) system to purge air from an integrated extracorporeal blood circuit providing extracorporeal oxygenation of a patient'"'"'s blood during cardiopulmonary bypass surgery adapted to be performed in the presence of a perfusionist on a patient in an operating room, the method comprising:
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providing an air removal device incorporated in the extracorporeal blood circuit, the air removal device comprising; an air removal device housing enclosing a chamber; an air removal device purge port through the housing to the chamber; an air sensor supported by the air removal device housing; and an air removal device purge line coupled to the air removal device purge port extending to a purge line connector adapted to be coupled to a vacuum source to apply suction to the air removal device purge port to draw air therefrom; locating a portion of the air removal purge line extending through a purge valve of an AAR controller, the purge valve movable between a purge valve open position and a purge valve closed position; applying operating power to the air sensor to generate an air sensor signal indicative of the absence or presence of air in the air removal device housing; opening the puree valve in response to an air sensor signal indicative of the presence of air in the air removal device housing to allow air sensed in the air removal device to be purged through the purge line by the suction of the vacuum source; monitoring operations or conditions of the AAR system; determining an error state of the monitored operations or conditions of the AAR system; issuing an alert to alert the perfusionist of the error state; and further wherein the AAR controller further comprises a mechanical release button interconnected with the purge valve adapted to enable manual opening of the purge valve by the perfusionist. - View Dependent Claims (18, 19, 20)
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21. A method of operating an active air removal (AAR) system to purge air from an integrated extracorporeal blood circuit providing extracorporeal oxygenation of a patient'"'"'s blood during cardiopulmonary bypass surgery adapted to be performed in the presence of a perfusionist on a patient in an operating room, the method comprising:
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providing an air removal device incorporated in the extracorporeal blood circuit, the air removal device comprising; an air removal device housing enclosing a chamber; an air removal device purge port through the housing to the chamber; an air sensor supported by the air removal device housing; and an air removal device purge line coupled to the air removal device purge port extending to a purge line connector adapted to be coupled to a vacuum source to apply suction to the air removal device purge port to draw air therefrom; locating a portion of the air removal purge line extending through a purge valve of an AAR controller, the purge valve movable between a purge valve open position and a purge valve closed position; applying operating power to the air sensor to generate an air sensor signal indicative of the absence or presence of air in the air removal device housing; opening the purge valve in response to an air sensor signal indicative of the presence of air in the air removal device housing to allow air sensed in the air removal device to be purged through the purge line by the suction of the vacuum source; monitoring operations or conditions of the AAR system; determining an error state of the monitored operations or conditions of the AAR system; issuing an alert to alert the perfusionist of the error state; and wherein the AAR controller further comprises a fluid in line (FIL) sensor arranged with respect to the purge valve, and further comprising; locating a further portion of the purge line through the FIL sensor; and powering the FIL sensor to develop a FIL sensor signal indicative of the absence or presence of fluid in the purge line, and wherein; the error state determining step comprises determining if the FIL sensor signal indicates the presence of fluid in the purge line. - View Dependent Claims (22, 23)
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24. A method of operating an active air removal (AAR) system to purge air from an integrated extracorporeal blood circuit providing extracorporeal oxygenation of a patient'"'"'s blood during cardiopulmonary bypass surgery adapted to be performed in the presence of a perfusionist on a patient in an operating room, the method comprising:
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providing an air removal device incorporated in the extracorporeal blood circuit, the air removal device comprising; an air removal device housing enclosing a chamber; an air removal device purge port through the housing to the chamber; an air sensor supported by the air removal device housing; and an air removal device purge line coupled to the air removal device purge port extending to a purge line connector adapted to be coupled to a vacuum source to apply suction to the air removal device purge port to draw air therefrom; locating a portion of the air removal purge line extending through a purge valve of an AAR controller, the purge valve movable between a purge valve open position and a purge valve closed position; applying operating power to the air sensor to generate an air sensor signal indicative of the absence or presence of air in the air removal device housing; opening the purge valve in response to an air sensor signal indicative of the presence of air in the air removal device housing to allow air sensed in the air removal device to be purged through the purge line by the suction of the vacuum source; monitoring operations or conditions of the AAR system; determining an error state of the monitored operations or conditions of the AAR system; issuing an alert to alert the perfusionist of the error state; and wherein; the AAR controller further comprises a vacuum sensor arranged with respect to the purge line to provide a vacuum signal indicative of vacuum in the purge line; the error state determining step determines if the sensed vacuum exceeds a minimum vacuum; and the alert issuing step issues an alert if the sensed vacuum does not exceed the minimum vacuum.
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25. A method of operating an active air removal (AAR) system to purge air from an integrated extracorporeal blood circuit providing extracorporeal oxygenation of a patient'"'"'s blood during cardiopulmonary bypass surgery adapted to be performed in the presence of a perfusionist on a patient in an operating room, the method comprising:
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providing an air removal device incorporated in the extracorporeal blood circuit, the air removal device comprising; an air removal device housing enclosing a chamber; an air removal device purge port through the housing to the chamber; an air sensor supported by the air removal device housing; and an air removal device purge line coupled to the air removal device purge port extending to a purge line connector adapted to be coupled to a vacuum source to apply suction to the air removal device purge port to draw air therefrom; locating a portion of the air removal purge line extending through a purge valve of an AAR controller, the purge valve movable between a purge valve open position and a purge valve closed position; applying operating power to the air sensor to generate an air sensor signal indicative of the absence or presence of air in the air removal device housing; opening the purge valve in response to an air sensor signal indicative of the presence of air in the air removal device housing to allow air sensed in the air removal device to be purged through the purge line by the suction of the vacuum source; monitoring operations or conditions of the AAR system; determining an error state of the monitored operations or conditions of the AAR system; issuing an alert to alert the perfusionist of the error state; and further comprising; connecting an air sensor cable between the AAR controller and the air sensor; and wherein; the determining step determines if electrical continuity is present in the connection of the air sensor cable between the AAR controller and the air sensor; and the alert issuing step issues an air removal device cable error alert if electrical continuity is not determined.
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26. A method of operating an active air removal (AAR) system to purge air from an integrated extracorporeal blood circuit providing extracorporeal oxygenation of a patient'"'"'s blood during cardiopulmonary bypass surgery adapted to be performed in the presence of a perfusionist on a patient in an operating room, the method comprising:
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providing an air removal device incorporated in the extracorporeal blood circuit, the air removal device comprising; an air removal device housing enclosing a chamber; an air removal device purge port through the housing to the chamber; an air sensor supported by the air removal device housing; and an air removal device purge line coupled to the air removal device purge port extending to a purge line connector adapted to be coupled to a vacuum source to apply suction to the air removal device purge port to draw air therefrom; locating a portion of the air removal purge line extending through a purge valve of an AAR controller, the purge valve movable between a purge valve open position and a purge valve closed position; applying operating power to the air sensor to generate an air sensor signal indicative of the absence or presence of air in the air removal device housing; opening the purge valve in response to an air sensor signal indicative of the presence of air in the air removal device housing to allow air sensed in the air removal device to be purged through the purge line by the suction of the vacuum source; monitoring operations or conditions of the AAR system; determining an error state of the monitored operations or conditions of the AAR system; issuing an alert to alert the perfusionist of the error state; wherein the purge valve comprises a pinch valve having a valve slot receiving the portion of the purge line and a pinch rod adapted to be moved between a purge valve closed position extending into the slot to compress the purge line and a purge valve open position retracted out of the slot; the purge valve opening step comprises moving the pinch rod from the purge valve closed position to the purge valve open position and wherein; the error state determining step comprises; commanding the pinch rod to move into one of the pinch valve open and closed positions; sensing the pinch rod position and providing a pinch rod position signal indicative of the actual position of the pinch rod; and determining a position error state of the purge valve when the pinch rod position signal does not confirm that the pinch rod is in the commanded purge valve open or purge valve closed position; and the alert issuing step comprises issuing a pinch rod position error alert in response to the determined position error state.
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27. A method of operating an active air removal (AAR) system to purge air from an integrated extracorporeal blood circuit providing extracorporeal oxygenation of a patient'"'"'s blood during cardiopulmonary bypass surgery adapted to be performed in the presence of a perfusionist on a patient in an operating room, the method comprising:
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providing an air removal device incorporated in the extracorporeal blood circuit, the air removal device comprising; an air removal device housing enclosing a chamber; an air removal device purge port through the housing to the chamber; an air sensor supported by the air removal device housing; and an air removal device purge line coupled to the air removal device purge port extending to a purge line connector adapted to be coupled to a vacuum source to apply suction to the air removal device purge port to draw air therefrom; locating a portion of the air removal purge line extending through a purge valve of an AAR controller, the purge valve movable between a purge valve open position and a purge valve closed position; applying operating power to the air sensor to generate an air sensor signal indicative of the absence or presence of air in the air removal device housing; opening the purge valve in response to an air sensor signal indicative of the presence of air in the air removal device housing to allow air sensed in the air removal device to be purged through the purge line by the suction of the vacuum source; monitoring operations or conditions of the AAR system; determining an error state of the monitored operations or conditions of the AAR system; issuing an alert to alert the perfusionist of the error state; and wherein; the error state determining step comprises; commanding the purge valve to move into one of the purge valve open and closed positions; sensing the purge valve position and providing a purge valve position signal indicative of the actual position of the purge valve; and determining a position error state of the purge valve or the purge valve operating means when the sensed purge valve position signal does not confirm that the purge valve is in the commanded purge valve open position or purge valve closed position; and the alert issuing step comprises issuing a purge valve error alert in responsive to the determined position error state.
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28. A method of operating an active air removal (AAR) system to purge air from an integrated extracorporeal blood circuit providing extracorporeal oxygenation of a patient'"'"'s blood during cardiopulmonary bypass surgery adapted to be performed in the presence of a perfusionist on a patient in an operating room, the method comprising:
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providing an air removal device incorporated in the extracorporeal blood circuit, the air removal device comprising; an air removal device housing enclosing a chamber; an air removal device purge port through the housing to the chamber; an air sensor supported by the air removal device housing; and an air removal device purge line coupled to the air removal device purge port extending to a purge line connector adapted to be coupled to a vacuum source to apply suction to the air removal device purge port to draw air therefrom; locating a portion of the air removal purge line extending through a purge valve of an AAR controller, the purge valve movable between a purge valve open position and a purge valve closed position; applying operating power to the air sensor to generate an air sensor signal indicative of the absence or presence of air in the air removal device housing; opening the purge valve in response to an air sensor signal indicative of the presence of air in the air removal device housing to allow air sensed in the air removal device to be purged through the purge line by the suction of the vacuum source; monitoring operations or conditions of the AAR system; determining an error state of the monitored operations or conditions of the AAR system; issuing an alert to alert the perfusionist of the error state; and wherein; the AAR controller further comprises AAR controller circuitry and a power supply adapted to be coupled to electrical mains power for providing operating power to the AAR controller circuitry; the determining step comprises determining if the power supply is providing adequate operating power; and the alert issuing step comprises issuing a power supply error alert if the power supply is not providing adequate operating power. - View Dependent Claims (29, 30, 31, 32)
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33. A method of operating an active air removal (AAR) system to purge air from an integrated extracorporeal blood circuit providing extracorporeal oxygenation of a patient'"'"'s blood during cardiopulmonary bypass surgery adapted to be performed in the presence of a perfusionist on a patient in an operating room, the method comprising:
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providing an air removal device incorporated in the extracorporeal blood circuit, the air removal device comprising; an air removal device housing enclosing a chamber; an air removal device purge port through the housing to the chamber; an air sensor supported by the air removal device housing; and an air removal device purge line coupled to the air removal device purge port extending to a purge line connector adapted to be coupled to a vacuum source to apply suction to the air removal device purge port to draw air therefrom; locating a portion of the air removal purge line extending through a purge valve of an AAR controller, the purge valve movable between a purge valve open position and a purge valve closed position; applying operating power to the air sensor to generate an air sensor signal indicative of the absence or presence of air in the air removal device housing; opening the purge valve in response to an air sensor signal indicative of the presence of air in the air removal device housing to allow air sensed in the air removal device to be purged through the purge line by the suction of the vacuum source; monitoring operations or conditions of the AAR system; determining an error state of the monitored operations or conditions of the AAR system; issuing an alert to alert the perfusionist of the error state; and wherein the alert issuing step comprises; formulating alert sound signals related to the determined error state; and applying the formulated alert sound signals to a sound emitter that emits audible alert sounds that can be heard by the perfusionist.
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34. A method of operating an active air removal (AAR) system to purge air from an integrated extracorporeal blood circuit providing extracorporeal oxygenation of a patient'"'"'s blood during cardiopulmonary bypass surgery adapted to be performed in the presence of a perfusionist on a patient in an operating room, the method comprising:
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providing an air removal device incorporated in the extracorporeal blood circuit, the air removal device comprising; an air removal device housing enclosing a chamber; an air removal device purge port through the housing to the chamber; an air sensor supported by the air removal device housing; and an air removal device purge line coupled to the air removal device purge port extending to a purge line connector adapted to be coupled to a vacuum source to apply suction to the air removal device purge port to draw air therefrom; locating a portion of the air removal purge line extending through a purge valve of an AAR controller, the purge valve movable between a purge valve open position and a purge valve closed position; applying operating power to the air sensor to generate an air sensor signal indicative of the absence or presence of air in the air removal device housing; opening the purge valve in response to an air sensor signal indicative of the presence of air in the air removal device housing to allow air sensed in the air removal device to be purged through the purge line by the suction of the vacuum source; monitoring operations or conditions of the AAR system; determining an error state of the monitored operations or conditions of the AAR system; issuing an alert to alert the perfusionist of the error state; and wherein the alert issuing step comprises; formulating alert light signals related to the determined error state; and applying the formulated alert light signals to at least one light emitter that emits visual light in response to the alert light signals that can be seen by the perfusionist.
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35. A method of operating an active air removal (AAR) system to purge air from an integrated extracorporeal blood circuit providing extracorporeal oxygenation of a patient'"'"'s blood during cardiopulmonary bypass surgery adapted to be performed in the presence of a perfusionist on a patient in an operating room, the operating method comprising:
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providing an air removal device incorporated in the extracorporeal blood circuit, the air removal device comprising; an air removal device housing enclosing a chamber; an air removal device purge port through the housing to the chamber; an air sensor supported by the air removal device housing adapted to provide an air sensor signal indicative of air in the air removal device housing; an air removal device purge line coupled to the air removal device purge port and extending to a purge line connector adapted to be coupled to a vacuum source to apply suction to the air removal device purge port to draw air therefrom; providing an active air removal AAR controller operating under the control of an AAR operating algorithm; locating a portion of the air removal purge line extending through a purge valve of the AAR controller, the purge valve movable between a purge valve open position and a purge valve closed position; coupling the air sensor with the AAR controller; monitoring operations or conditions of the AAR system; determining an error state of the monitored operations or conditions of the AAR system; automatically moving of the purge valve from the closed position to the open position in an absence of a determined error state and when the air sensor signal is indicative of air in the air removal device housing to allow air sensed in the air removal device to be purged through the purge line by the suction of the vacuum source; and wherein the AAR controller operating system is powered by a power supply adapted to be coupled to mains power or by a backup battery, and further comprising; determining if the power supply is operative and capable of supplying operating power to the AAR controller operating system; determining if the backup battery is present and capable of supplying operating power to the AAR controller operating system; and supplying operating power from the backup battery to the AAR controller operating system when the power supply is determined to be inoperative or incapable of supplying operating power to the AAR controller operating system and the backup battery is determined to be present and capable of supplying operating power to the AAR controller operating system. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42)
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43. A method of operating an active air removal (AAR) system to purge air from an integrated extracorporeal blood circuit providing extracorporeal oxygenation of a patient'"'"'s blood during cardiopulmonary bypass surgery adapted to be performed in the presence of a perfusionist on a patient in an operating room, the operating method comprising:
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providing an air removal device incorporated in the extracorporeal blood circuit, the air removal device comprising; an air removal device housing enclosing a chamber; an air removal device purge port through the housing to the chamber; an air sensor supported by the air removal device housing adapted to provide an air sensor signal indicative of air in the air removal device housing; an air removal device purge line coupled to the air removal device purge port and extending to a purge line connector adapted to be coupled to a vacuum source to apply suction to the air removal device purge port to draw air therefrom; providing an active air removal AAR controller operating under the control of an AAR operating algorithm; locating a portion of the air removal purge line extending through a purge valve of the AAR controller, the purge valve movable between a purge valve open position and a purge valve closed position; coupling the air sensor with the AAR controller; monitoring operations or conditions of the AAR system; determining an error state of the monitored operations or conditions of the AAR system; automatically moving of the purge valve from the closed position to the open position in an absence of a determined error state and when the air sensor signal is indicative of air in the air removal device housing to allow air sensed in the air removal device to be purged through the purge line by the suction of the vacuum source; further comprising alerting the perfusionist of the determined error state; and wherein the error state determining step comprises determining the presence of fluid in the purge line.
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44. A method of operating an active air removal (AAR) system to purge air from an integrated extracorporeal blood circuit providing extracorporeal oxygenation of a patient'"'"'s blood during cardiopulmonary bypass surgery adapted to be performed in the presence of a perfusionist on a patient in an operating room, the operating method comprising:
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providing an air removal device incorporated in the extracorporeal blood circuit, the air removal device comprising; an air removal device housing enclosing a chamber; an air removal device purge port through the housing to the chamber; an air sensor supported by the air removal device housing adapted to provide an air sensor signal indicative of air in the air removal device housing; an air removal device purge line coupled to the air removal device purge port and extending to a purge line connector adapted to be coupled to a vacuum source to apply suction to the air removal device purge port to draw air therefrom; providing an active air removal AAR controller operating under the control of an AAR operating algorithm; locating a portion of the air removal purge line extending through a purge valve of the AAR controller, the purge valve movable between a purge valve open position and a purge valve closed position; coupling the air sensor with the AAR controller; monitoring operations or conditions of the AAR system; determining an error state of the monitored operations or conditions of the AAR system; automatically moving of the purge valve from the closed position to the open position in an absence of a determined error state and when the air sensor signal is indicative of air in the air removal device housing to allow air sensed in the air removal device to be purged through the purge line by the suction of the vacuum source; and wherein the AAR controller further comprises a fluid in line (FIL) sensor arranged with respect to the purge valve, and further comprising; locating a further portion of the purge line through the FIL sensor; and powering the FIL sensor to develop a FIL sensor signal indicative of the absence or presence of fluid in the purge line, and wherein; the error state determining step comprises determining the presence of fluid in the purge line from the FIL sensor signal.
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45. A method of operating an active air removal (AAR) system to purge air from an integrated extracorporeal blood circuit providing extracorporeal oxygenation of a patient'"'"'s blood during cardiopulmonary bypass surgery adapted to be performed in the presence of a perfusionist on a patient in an operating room, the operating method comprising:
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providing an air removal device incorporated in the extracorporeal blood circuit, the air removal device comprising; an air removal device housing enclosing a chamber; an air removal device purge port through the housing to the chamber; an air sensor supported by the air removal device housing adapted to provide an air sensor signal indicative of air in the air removal device housing; an air removal device purge line coupled to the air removal device purge port and extending to a purge line connector adapted to be coupled to a vacuum source to apply suction to the air removal device purge port to draw air therefrom; providing an active air removal AAR controller operating under the control of an AAR operating algorithm; locating a portion of the air removal purge line extending through a purge valve of the AAR controller, the purge valve movable between a purge valve open position and a purge valve closed position; coupling the air sensor with the AAR controller; monitoring operations or conditions of the AAR system; determining an error state of the monitored operations or conditions of the AAR system; automatically moving of the purge valve from the closed position to the open position in an absence of a determined error state and when the air sensor signal is indicative of air in the air removal device housing to allow air sensed in the air removal device to be purged through the purge line by the suction of the vacuum source; and wherein the error state determining step comprises determining the presence of fluid in the purge line. - View Dependent Claims (46)
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47. A method of operating an active air removal (AAR) system to purge air from an integrated extracorporeal blood circuit providing extracorporeal oxygenation of a patient'"'"'s blood during cardiopulmonary bypass surgery adapted to be performed in the presence of a perfusionist on a patient in an operating room, the operating method comprising:
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providing an air removal device incorporated in the extracorporeal blood circuit, the air removal device comprising; an air removal device housing enclosing a chamber; an air removal device purge port through the housing to the chamber; an air sensor supported by the air removal device housing adapted to provide an air sensor signal indicative of air in the air removal device housing; an air removal device purge line coupled to the air removal device purge port and extending to a purge line connector adapted to be coupled to a vacuum source to apply suction to the air removal device purge port to draw air therefrom; providing an active air removal AAR controller operating under the control of an AAR operating algorithm; locating a portion of the air removal purge line extending through a purge valve of the AAR controller, the purge valve movable between a purge valve open position and a purge valve closed position; coupling the air sensor with the AAR controller; monitoring operations or conditions of the AAR system; determining an error state of the monitored operations or conditions of the AAR system; automatically moving of the purge valve from the closed position to the open position in an absence of a determined error state and when the air sensor signal is indicative of air in the air removal device housing to allow air sensed in the air removal device to be purged through the purge line by the suction of the vacuum source; and
further comprising;connecting an air sensor cable between the AAR controller and the air sensor; and wherein the determining step determines if electrical continuity is present in the connection of the air sensor cable between the AAR controller and the air sensor.
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48. A method of operating an active air removal (AAR) system to purge air from an integrated extracorporeal blood circuit providing extracorporeal oxygenation of a patient'"'"'s blood during cardiopulmonary bypass surgery adapted to be performed in the presence of a perfusionist on a patient in an operating room, the operating method comprising:
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providing an air removal device incorporated in the extracorporeal blood circuit, the air removal device comprising; an air removal device housing enclosing a chamber; an air removal device purge port through the housing to the chamber; an air sensor supported by the air removal device housing adapted to provide an air sensor signal indicative of air in the air removal device housing; an air removal device purge line coupled to the air removal device purge port and extending to a purge line connector adapted to be coupled to a vacuum source to apply suction to the air removal device purge port to draw air therefrom; providing an active air removal AAR controller operating under the control of an AAR operating algorithm; locating a portion of the air removal purge line extending through a purge valve of the AAR controller, the purge valve movable between a purge valve open position and a purge valve closed position; coupling the air sensor with the AAR controller; monitoring operations or conditions of the AAR system; determining an error state of the monitored operations or conditions of the AAR system; automatically moving of the purge valve from the closed position to the open position in an absence of a determined error state and when the air sensor signal is indicative of air in the air removal device housing to allow air sensed in the air removal device to be purged through the purge line by the suction of the vacuum source; and wherein the error state determining step comprises determining an error state of the air sensor.
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49. A method of operating an active air removal (AAR) system to purge air from an integrated extracorporeal blood circuit providing extracorporeal oxygenation of a patient'"'"'s blood during cardiopulmonary bypass surgery adapted to be performed in the presence of a perfusionist on a patient in an operating room, the operating method comprising:
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providing an air removal device incorporated in the extracorporeal blood circuit, the air removal device comprising; an air removal device housing enclosing a chamber; an air removal device purge port through the housing to the chamber; an air sensor supported by the air removal device housing adapted to provide an air sensor signal indicative of air in the air removal device housing; an air removal device purge line coupled to the air removal device purge port and extending to a purge line connector adapted to be coupled to a vacuum source to apply suction to the air removal device purge port to draw air therefrom; providing an active air removal AAR controller operating under the control of an AAR operating algorithm; locating a portion of the air removal purge line extending through a purge valve of the AAR controller, the purge valve movable between a purge valve open position and a purge valve closed position; coupling the air sensor with the AAR controller; monitoring operations or conditions of the AAR system; determining an error state of the monitored operations or conditions of the AAR system; automatically moving of the purge valve from the closed position to the open position in an absence of a determined error state and when the air sensor signal is indicative of air in the air removal device housing to allow air sensed in the air removal device to be purged through the purge line by the suction of the vacuum source; and wherein the error state determining step comprises determining a low vacuum condition.
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50. A method of operating an active air removal (AAR) system to purge air from an integrated extracorporeal blood circuit providing extracorporeal oxygenation of a patient'"'"'s blood during cardiopulmonary bypass surgery adapted to be performed in the presence of a perfusionist on a patient in an operating room, the operating method comprising:
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providing an air removal device incorporated in the extracorporeal blood circuit, the air removal device comprising; an air removal device housing enclosing a chamber; an air removal device purge port through the housing to the chamber; an air sensor supported by the air removal device housing adapted to provide an air sensor signal indicative of air in the air removal device housing; an air removal device purge line coupled to the air removal device purge port and extending to a purge line connector adapted to be coupled to a vacuum source to apply suction to the air removal device purge port to draw air therefrom; providing an active air removal AAR controller operating under the control of an AAR operating algorithm; locating a portion of the air removal purge line extending through a purge valve of the AAR controller, the purge valve movable between a purge valve open position and a purge valve closed position; coupling the air sensor with the AAR controller; monitoring operations or conditions of the AAR system; determining an error state of the monitored operations or conditions of the AAR system; automatically moving of the purge valve from the closed position to the open position in an absence of a determined error state and when the air sensor signal is indicative of air in the air removal device housing to allow air sensed in the air removal device to be purged through the purge line by the suction of the vacuum source; and wherein; the AAR controller further comprises a vacuum sensor arranged with respect to the purge line to provide a vacuum signal indicative of vacuum in the purge line; the error state determining step determines a low vacuum error state if the sensed vacuum falls below a minimum vacuum.
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51. A method of operating an active air removal (AAR) system to purge air from an integrated extracorporeal blood circuit providing extracorporeal oxygenation of a patient'"'"'s blood during cardiopulmonary bypass surgery adapted to be performed in the presence of a perfusionist on a patient in an operating room, the operating method comprising:
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providing an air removal device incorporated in the extracorporeal blood circuit, the air removal device comprising; an air removal device housing enclosing a chamber; an air removal device purge port through the housing to the chamber; an air sensor supported by the air removal device housing adapted to provide an air sensor signal indicative of air in the air removal device housing; an air removal device purge line coupled to the air removal device purge port and extending to a purge line connector adapted to be coupled to a vacuum source to apply suction to the air removal device purge port to draw air therefrom; providing an active air removal AAR controller operating under the control of an AAR operating algorithm; locating a portion of the air removal purge line extending through a purge valve of the AAR controller, the purge valve movable between a purge valve open position and a purge valve closed position; coupling the air sensor with the AAR controller; monitoring operations or conditions of the AAR system; determining an error state of the monitored operations or conditions of the AAR system; automatically moving of the purge valve from the closed position to the open position in an absence of a determined error state and when the air sensor signal is indicative of air in the air removal device housing to allow air sensed in the air removal device to be purged through the purge line by the suction of the vacuum source; and wherein the error state determining step comprises determining a purge valve error state of the purge valve. - View Dependent Claims (52)
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53. A method of operating an active air removal (AAR) system to purge air from an integrated extracorporeal blood circuit providing extracorporeal oxygenation of a patient'"'"'s blood during cardiopulmonary bypass surgery adapted to be performed in the presence of a perfusionist on a patient in an operating room, the operating method comprising:
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providing an air removal device incorporated in the extracorporeal blood circuit, the air removal device comprising; an air removal device housing enclosing a chamber; an air removal device purge port through the housing to the chamber; an air sensor supported by the air removal device housing adapted to provide an air sensor signal indicative of air in the air removal device housing; an air removal device purge line coupled to the air removal device purge port and extending to a purge line connector adapted to be coupled to a vacuum source to apply suction to the air removal device purge port to draw air therefrom; providing an active air removal AAR controller operating under the control of an AAR operating algorithm; locating a portion of the air removal purge line extending through a purge valve of the AAR controller, the purge valve movable between a purge valve open position and a purge valve closed position; coupling the air sensor with the AAR controller; monitoring operations or conditions of the AAR system; determining an error state of the monitored operations or conditions of the AAR system; automatically moving of the purge valve from the closed position to the open position in an absence of a determined error state and when the air sensor signal is indicative of air in the air removal device housing to allow air sensed in the air removal device to be purged through the purge line by the suction of the vacuum source; and wherein; the AAR controller further comprises a vacuum sensor arranged with respect to the purge line to provide a vacuum signal indicative of vacuum in the purge line when the purge valve is closed; and the error state determining step comprises determining if the sensed vacuum exceeds a minimum vacuum.
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Specification