An automatic moisture detection device in a hemodialysis instrument

Abstract

The invention discloses an automatic moisture detection device for a hemodialyzer. The device of the invention comprises a transparent shell and a transparent duct. The inside of the transparent shell is divided by a separator plate into a first containing cavity and a second containing cavity. A semi-permeable membrane is installed at a mounting hole in the lower part of the separator plate. A containing box is fixed at the upper part of the back side of the transparent shell. An upper cover is fixed at the upper end of the transparent shell. A storage battery, a display screen, a control switch and a single-chip microcomputer are successively arranged from the front to the back at the left side of the upper surface of the upper cover. Water content of blood can be rapidly detected. The structure is simple. The semi-permeable membrane only allows moisture to pass through. Moisture moves from the second containing cavity into the first containing cavity through the semi-permeable membrane. The liquid column of the transparent duct decreases, and a floating ball decreases with the liquid level. the single-chip microcomputer compares moving velocity curve of the floating ball and the curve of different concentrations of blood stored in a memory of the single-chip microcomputer and moving speed of the floating ball. The cost is low; measurement accuracy is high; and size is small.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an automatic moisture detection device in a hemodialysis instrument. Background technique [0002] At present, the environment is seriously polluted, and people are suffering from various diseases. Kidney failure is one particularly serious condition. Patients need to go to the hospital for hemodialysis or kidney replacement to maintain their health. Due to the shortage of kidney sources and the high medical expenses of kidney replacement, most people can only choose hemodialysis. Hemodialysis is to remove the toxic substances and excess water in the human blood through the hemodialysis machine. However, existing hemodialysis machines cannot detect the water content in the blood, and can only obtain how much water is in the body by subtracting the patient's own weight before hemodialysis and the standard weight in the file. This method is not only inconvenient, but al...

AI Technical Summary

Problems solved by technology

However, the existing hemodialysis machines cannot detect the water content in the blood, and can only obtain how much water is in the body by subtracting the patient's own weight before hemodialysis from the standard weight in the file

This method is not only inconvenient, but also with different seasons, the clothes people wear and the things they carry with them will affect the accurate determination of moisture.

Pumping too much water will cause physical discomfort, and pumping too little water will not achieve the therapeutic effect

This has brought distress and danger to many patients undergoing hemodialysis

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