Blood filter having a sensor for active gas removal and methods of use
First Claim
Patent Images
1. A filter apparatus for removing gas from blood, comprising:
- a housing having an interior, a gas removal port, a blood inlet, a blood outlet, and an upper surface defining an apex, the gas removal port located at the apex of the housing;
a sensor positioned to sense gas within the interior of the housing; and
a filter element disposed within the interior of the housing, the filter element having a fluid impermeable conical upper wall around which fluid circulates upon entry into the housing, the conical upper wall defining a central opening allowing communication the interior of the filter element and the gas removal port.
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Abstract
Apparatus and methods for removing gas from a blood handling system. A filter apparatus for monitoring and removing gas is provided comprising of a gas removal/blood filter, a sensor to sense the presence of gas, and a valve operably coupled to the sensor to evacuate gas from the apparatus when the sensor detects an accumulation of gas. When used with a previously known blood handling system, the present filter apparatus facilitates priming and the addition of additional blood handling elements during operation of the blood handling system.
106 Citations
34 Claims
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1. A filter apparatus for removing gas from blood, comprising:
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a housing having an interior, a gas removal port, a blood inlet, a blood outlet, and an upper surface defining an apex, the gas removal port located at the apex of the housing;
a sensor positioned to sense gas within the interior of the housing; and
a filter element disposed within the interior of the housing, the filter element having a fluid impermeable conical upper wall around which fluid circulates upon entry into the housing, the conical upper wall defining a central opening allowing communication the interior of the filter element and the gas removal port. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A filter apparatus for removing gas from blood, comprising:
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a housing having an interior, a gas removal port, a blood inlet, a blood outlet, and an upper surface defining an apex, the gas removal port located at the apex of the housing;
a sensor positioned to sense gas within the interior of the housing; and
a filter element disposed within the interior of the housing, the filter element having a fluid impermeable upper wall around which fluid circulates upon entry into the housing, the upper wall defining a central opening allowing communication between the interior of the filter element and the gas removal port, wherein the blood inlet directs blood in a substantially tangential direction so that blood initially circulates around the upper wall upon entering the interior of the housing. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification