Monitor for blood/physiological saline in recirculation line

Abstract

The invention relates to a recirculation line blood / normal saline monitor which is used for blood purification. The monitor comprises a power supply circuit, an optical transmission circuit, an optical receiving circuit, a signal amplification circuit and a signal processing circuit, wherein, the power supply circuit supplies power to other unit circuits; the optical transmission circuit sends anoptical signal; the optical receiving circuit receives the sent optical signal and converts the optical signal into a current signal for output; and the signal amplification circuit receives the current signal, generates a voltage signal and outputs the voltage signal to the signal processing circuit. The monitor is characterized in that the signal processing circuit generates an alarm signal andsends the alarm signal to a peripheral alarm circuit, and the peripheral alarm circuit generates a modulation signal and sends the modulation signal to the optical transmission circuit. Compared withthe prior art, the monitor can accurately obtain a signal about blood channel establishment and blood doping completion, send an audible-visible alarm signal, and timely inform medical care personnelof removing the air in the line or the completion of the blood purification, thus preventing medical accidents.

Description

technical field [0001] The invention relates to a blood / normal saline monitoring device in a blood pipeline, in particular to a blood / normal saline monitoring device for monitoring the establishment of a blood channel in an extracorporeal circulation pipeline or the completion of blood reinfusion in hemodialysis device. Background technique [0002] At present, in the blood purification equipment, the blood of the patient flows out of the body through the extracorporeal circulation formed by the pipeline and returns to the body. In this circulation system, it mainly includes three parts: blood circuit, liquid circuit and monitoring circuit. The blood in the patient's body is led out of the body, enters the extracorporeal pipeline such as the dialyzer or filter, and flows back into the human body to form a blood system; in the fluid system, the dialysate enters the dialyzer and undergoes diffusion and convection with the patient's blood on the opposite side of the dialyzer me...

AI Technical Summary

Problems solved by technology

[0005] Its disadvantages are: in the current hemodialysis process, there is no device for monitoring the establishment of blood access at the end of the extracorporeal circulation return line and the completion of blood return

However, the workload of medical staff in the hospital is heavy, and it is difficult to observe the status of the pipeline in real time for several hours.

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