Blood leakage detection device for extracorporeal circulation line

Abstract

The invention discloses a blood leakage detection device for an extracorporeal circulation line, and the device comprises a power module, a microcontroller, a light source control module, a temperature measurement module, and a storage module, wherein the power output terminal of the power module is connected to the power input terminals of the microcontroller, the light source control module, thetemperature measurement module and the storage module; the signal input and output terminal of the microcontroller is communicatively connected to the signal input and output terminal of the light source control module, and is communicatively connected to the signal input and output terminal of the temperature measurement module; and signal input and output terminal of the microcontroller is communicatively connected to the signal input and output terminal of the storage module. According to the ingenious design of the circuit, the light sensor is digital and directly outputs digital signals,thereby avoiding errors generated in the signal amplification process and analog-to-digital conversion process, and making the leak detection device have higher sensitivity and lower false alarm rate.

Description

technical field [0001] The invention relates to the technical field of medical instruments. Specifically, it is a blood leakage detection device for extracorporeal circulation pipeline. Background technique [0002] The dialysis blood leakage sensor is an important part of the dialysis machine. When there are air bubbles in the dialysate, the membrane of the dialyzer is ruptured, and blood overflows, it will alarm in time to ensure the safety of the patient during the treatment. The blood leakage sensor is composed of a light-emitting side and a light-receiving side, and the basic principle is optical monitoring. When blood leakage occurs, due to the shading effect of red blood cells suspended in the dialysate, the light intensity received by the light-receiving side decreases, and then the converted voltage decreases. When the drop is certain, a blood leakage alarm will occur. [0003] Traditional blood leakage sensors have complex circuit settings and poor sensitivity of...

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Problems solved by technology

[0003] The traditional blood leakage sensor has complex circuit settings and poor sensitivity of temperature sensor and light sensor, which leads to frequent alarms or failure to detect the occurrence of blood leakage in the blood leakage detection device, so that the safety of patients during treatment cannot be guaranteed.

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