Blood purification apparatus

Abstract

It is aimed to confirm confirming the presence or absence of a characteristic peak provided by a blood concentration means (for example, a drainage pump) and surely and accurately detect blood recirculation by decreasing a parameter for determining the ratio of recirculated blood. Namely, a blood purification apparatus which comprises a blood circuit (1) consisting of an arterial side blood circuit (1a) and a vein side blood circuit (1b), a blood pump (3), a dialyzer (2), a drainage pump (8) capable of quickly removing water within a short time to thereby provide a peak characteristic to a change in blood concentration and a means of detecting the characteristic peak, and in which blood returned from the vein side blood circuit (1b) into a patient flows again due to the introduction by the artery side blood circuit (1a) based on the characteristic peak detected by the detection means and the thus recirculated blood can be detected, wherein the detection means consists of a first detection means (5a) located in the artery side blood circuit (1a) and a second detection means (5b) located in the vein side blood circuit (1b).

Description

technical field [0001] The present invention relates to a blood purification device that purifies blood of a patient while circulating the blood outside the body. Background technique [0002] Generally, in blood purification therapy, such as dialysis therapy, a blood circuit formed by a flexible tube is used in order to circulate a patient's blood outside the body. The blood circuit is mainly composed of an arterial side blood circuit and a venous side blood circuit. An arterial side puncture needle for taking blood from the patient is installed at the front end of the arterial side blood circuit. The patient's venous-side puncture needle is provided with a dialyzer between the arterial-side blood circuit and the venous-side blood circuit to purify blood in extracorporeal circulation. [0003] The structure of the above-mentioned dialyzer is as follows, a plurality of hollow wires are arranged inside the dialyzer, the blood passes through the inside of the corresponding ho...

AI Technical Summary

Problems solved by technology

[0004] However, for example, when the arterial-side puncture needle and the venous-side puncture needle are inserted into the patient's shunt (the site where the artery and vein are connected by surgery) and its surrounding area for extracorporeal circulation, the venous-side puncture needle may be decontaminated. The blood returned to the patient's body does not pass through the patient's or...

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