Extracorporeal circuit blood chamber having an integrated deaeration device
First Claim
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1. An extracorporeal blood circuit device, comprising:
- a blood chamber;
a deaeration device integrated with the blood chamber for allowing air released from blood flowing in the blood chamber to exit the blood chamber;
a sensor for measuring a blood constituent level, wherein the sensor performs measurements on blood in the blood chamber while the deaeration device allows air released from the blood flowing in the blood chamber to exit the blood chamber; and
a flow diverter disposed in the blood chamber and configured to divert blood flow to enable deaeration of the blood flowing in the blood chamber while the blood constituent level in the blood in the blood chamber is measured by the sensor.
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Abstract
A deaeration device includes a vent structure with a porous material capable of swelling when moistened such that the vent structure can inhibit liquid from escaping while allowing for the removal of gases from liquids. The deaeration device is integrated into a blood chamber of an extracorporeal circuit. The blood chamber may further include sensor components for actively performing measurements on the blood while the deaeration device passively removes air from the blood. In an embodiment, the blood chamber may be an optical blood chamber including an optical measurement sensor that performs measurements used in a determination of a hematocrit level in the blood.
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Citations
24 Claims
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1. An extracorporeal blood circuit device, comprising:
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a blood chamber; a deaeration device integrated with the blood chamber for allowing air released from blood flowing in the blood chamber to exit the blood chamber; a sensor for measuring a blood constituent level, wherein the sensor performs measurements on blood in the blood chamber while the deaeration device allows air released from the blood flowing in the blood chamber to exit the blood chamber; and a flow diverter disposed in the blood chamber and configured to divert blood flow to enable deaeration of the blood flowing in the blood chamber while the blood constituent level in the blood in the blood chamber is measured by the sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A dialysis system, comprising:
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a dialyzer; and an extracorporeal blood circuit device disposed adjacent to the dialyzer, the extracorporeal blood circuit device comprising; a blood chamber; and a deaeration device integrated with the blood chamber for allowing air released from blood flowing in the blood chamber to exit the blood chamber, a sensor for measuring a blood constituent level, and a flow diverter disposed in the blood chamber and configured to divert blood flow to enable deaeration of the blood flowing in the blood chamber while the blood constituent level in the blood in the blood chamber is measured by the sensor. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method for measuring and deaerating blood in an extracorporeal blood circuit, the method comprising:
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coupling a blood chamber with an integrated deaeration device to an outlet of a dialyzer; passively deaerating blood flowing in the blood chamber from the dialyzer and allowing air released from the blood in the blood chamber to exit the blood chamber via the integrated deaeration device; and actively performing measurements on the blood in the blood chamber using a sensor associated with the blood chamber. - View Dependent Claims (24)
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Specification