Anti-clotting apparatus and methods for fluid handling system
First Claim
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1. A method for maintaining clear passageways in a fluid flow system connected to a patient, the method comprising:
- providing a passageway configured to carry a fluid flow in a fluid flow system from the patient;
drawing a fluid sample into the fluid flow system;
separating an analysis portion from the fluid sample;
providing one or more anti-clotting agents to only the analysis portion, wherein at least one of the anti-clotting agents comprises an anticoagulant;
preventing the analysis portion of the fluid sample from being returned to the patient; and
analyzing the analysis portion to determine at least one analyte measurement.
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Abstract
Methods and apparatus are provided for determining the concentration of an analyte in a sample, such as an analyte in a sample of bodily fluid. In some embodiments, a method for maintaining clear passageways in an extracorporeal blood flow system includes intermittently providing one or more anti-clotting agents to a passageway of the extracorporeal blood flow system. In some embodiments, an extracorporeal blood flow system includes a passageway and a device operatively connected to provide one or more anti-clotting agents to a least a portion of said passageway.
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Citations
39 Claims
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1. A method for maintaining clear passageways in a fluid flow system connected to a patient, the method comprising:
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providing a passageway configured to carry a fluid flow in a fluid flow system from the patient; drawing a fluid sample into the fluid flow system; separating an analysis portion from the fluid sample; providing one or more anti-clotting agents to only the analysis portion, wherein at least one of the anti-clotting agents comprises an anticoagulant; preventing the analysis portion of the fluid sample from being returned to the patient; and analyzing the analysis portion to determine at least one analyte measurement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for maintaining clear passageways in a fluid flow system connected to a patient, the method comprising:
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providing a passageway configured to carry a fluid flow in a fluid flow system from the patient; drawing a fluid sample into the fluid flow system; providing one or more anti-clotting agents to at least a portion of the fluid sample, wherein at least one of the anti-clotting agents comprises an added anticoagulant; and returning to the patient only one or more portions of the fluid sample, wherein the one or more portions include no added anticoagulant. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39)
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Specification