Blood purification apparatus

Abstract

The subject of the present invention is to provide a blood purification device that can confirm whether or not a unique peak is provided by a blood concentration mechanism such as a water removal pump, and can reduce the parameters when calculating the ratio of recirculated blood, and is reliable and highly accurate. To detect blood recirculation. The blood purification device includes a blood circuit (1) composed of an arterial side blood circuit (1a) and a venous side blood circuit (1b); a blood pump (3); a dialyzer (2); Water makes the change of blood concentration have the water removal pump (8) of characteristic peak value; The patient's blood is sent to the arterial side blood circuit (1a) again to detect the recirculated blood flowing. The detection mechanism consists of the first detection mechanism (5a) arranged on the arterial side blood circuit (1a) and the first detection mechanism (5a) arranged on the venous side blood circuit. The second detection mechanism (5b) of (1b) constitutes.

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...

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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 organs, etc. The problem of recirculation of the blood introduced from the arterial side puncture needle again

If such blood recirculation occurs, the purified blood is further subjected to extracorporeal circulation, thereby reducing the amount of extracorporeal circulation of the blood that needs to be purified, thereby causing a disadvantage in that the efficiency of blood purification deteriorates.

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