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Blood purification device

A technology of blood purification and blood, which is applied in medicine equipment, other medical equipment, suction equipment, etc.

Active Publication Date: 2014-07-02
NIKKISO COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, since the pressure detection component is usually not provided on the upstream side of the blood pump in the blood circuit, it is impossible to directly detect the arterial side in the arterial side blood reinfusion step Blockage on the side of the blood circuit, so a method that can achieve automatic blood reinfusion and ensure safety can detect any blockage (caused by foreign objects) that occurs in any part of the blood circuit on the arterial side during the blood reinfusion step on the arterial side. A blood purification device (for example, refer to Patent Document 3)

Method used

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Embodiment 1

[0038] The blood purification device of embodiment 1 is made up of the dialysis device that is used for dialysis treatment, as Figures 1 to 3 As shown, it is mainly composed of the following: a blood circuit composed of an arterial side blood circuit 1 and a venous side blood circuit 2; a device installed between the arterial side blood circuit 1 and the venous side blood circuit 2 to purify the blood circulating in the blood circuit Dialyzer 3 (blood purification component); blood pump 4; arterial side air trap chamber 5 and venous side air trap chamber 6 respectively arranged in arterial side blood circuit 1 and venous side blood circuit 2; capable of supplying dialysate to the dialyzer The dialysis device body B of 3; the physiological saline supply line 8 (substitution fluid supply line); the storage assembly 9 for accommodating the physiological saline solution as the replacement fluid; the venous pressure sensor 21 as the hydraulic pressure detection assembly; Valve V1 ...

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Abstract

The present invention discloses a blood purification device capable of precisely detecting blockages of an arterial blood circuit in an arterial blood return step. A controlling means (19) detects pressure with a venous pressure sensor (21) while also carrying out a plurality of iterations of arterial blood return steps comprising a pressure accumulation step for forward-driving a blood pump (4) while also closing off a flow path with an electromagnetic valve (V2) to accumulate pressure between the installation position of the blood pump (4) and the installation position of the electromagnetic valve (V2), and a pressure release step for reverse-driving the blood pump (4) while also maintaining the closing off of the flow path by the electromagnetic valve (V2) to return blood from the distal end of an arterial blood circuit (2); and blockages of the flow path in an arterial blood circuit (1) can be detected on the basis of the change in pressure at corresponding predetermined points in time in each of the arterial blood return steps.

Description

technical field [0001] The present invention relates to a blood purification device for performing extracorporeal circulation and purifying blood of a patient undergoing dialysis treatment using a dialyzer. Background technique [0002] The dialysis device as a blood purification device is mainly composed of the following components: a blood circuit composed of an arterial side blood circuit with an arterial side puncture needle installed at the front end, and a venous side blood circuit with a venous side puncture needle installed at the front end; Between the blood circuit on the arterial side and the blood circuit on the venous side, the dialyzer used to purify the blood circulating in the blood circuit; the blood pump installed on the blood circuit on the arterial side; an arterial-side air trap chamber and a venous-side air trap chamber; and a dialysis device body capable of supplying dialysate to a dialyzer. [0003] In addition, between the arterial side puncture nee...

Claims

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Application Information

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IPC IPC(8): A61M1/14
CPCA61M1/3639A61M1/3621A61M2205/3331
Inventor 古桥智洋竹内聪二村宽
Owner NIKKISO COMPANY
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