Importance

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Abstract

A blood purification apparatus which can perform actions and operations according to the final stage of blood-return. Accordingly, a blood purification apparatus comprising a blood circuit including an arterial blood circuit and a venous blood circuit for extracorporeally circulating blood of a patient from a tip end of the arterial blood circuit to a tip end of the venous blood circuit; a blood purification means arranged between the arterial blood circuit and the venous blood circuit of the blood circuit and purifying blood flowing through the blood circuit; a substitution solution supplying means for supplying substitution solution to the blood circuit; and performing blood-return by substituting the blood in the blood circuit with the substitution solution supplied from the substitution solution supplying means after the blood purification treatment wherein the blood purification apparatus comprises a detecting means arranged at predetermined positions in the arterial blood circuit and the venous blood circuit and detecting presence or absence or blood concentration of the blood flowing in the arterial blood circuit and the venous blood circuit at said predetermined positrons, and a recognition means for recognizing a final stage of blood-return which is a condition near the end of the substitution of blood with the substitution solution based on the presence or absence of the blood or blood concentration detected by the detecting means.

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First Claim