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Abstract

A feedback controlled drug delivery system includes automated blood sampling and analysis and dosing of the patient. Automated sampling is performed by direct analysis of patient blood, such as for measurement of its coagulation state. A novel manifold includes a fluid input port, a patient port adapted to output fluid and to receive a blood sample from the patient, and a fluid pathway connecting the fluid port and the patient port. A sample line is connected to the fluid pathway to provide the sample to an analyzer. In one aspect of this invention, the sample is forced through the sample line by isolating the patient port, such as by a valve, and non-drug fluid is forced into the manifold causing the blood to cross through the sample line. Alternately, a pump force may be utilized on the sample line. In another aspect of this invention, a positive interlock system is utilized between a drug source and the system. In yet another aspect of this invention, a improved multitest unit is provided, such as in a carousel or stacked manner.

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First Claim