Bubble detection end face sealing test device

Abstract

The invention provides a bubble detection end face sealing test device, and belongs to the technical field of medical detection equipment. The plug in the end face sealing assembly moves in the concave cavity communicated with the first channel and the second channel, so that the first channel and the second channel can be cut off in the concave cavity along the cross section of the concave cavity, the problem that the plug directly acts on the first channel or the second channel to cause pipeline deformation is avoided, and meanwhile, the pipeline is not prone to deformation. The measuring assembly is arranged beside the first channel or the second channel, and calculation is started from the joint of the first channel or the second channel and the concave cavity, so that the starting point of the bubble length in the circulating pipeline can be kept consistent with the initial scale of the measuring assembly, and accurate measurement of the bubble length in the circulating pipeline is realized; accurate parameters are provided for calculating the air volume, so that the accuracy of air volume measurement is ensured, conditions are provided for ensuring the safety and the product quality of the dialysis machine, and the dialysis machine can be safely used in the later period.

Description

technical field [0001] The invention relates to the technical field of medical testing equipment, in particular to a bubble detection end face sealing test device. Background technique [0002] As an extracorporeal medical device that replaces normal human kidneys, a dialysis machine can diffuse high-concern toxic substances such as urea, creatinine acid, and uric acid in the patient's blood into the dialysate, and replenish necessary ions from the dialysate into the blood. To achieve the purpose of purifying the blood. [0003] However, in actual use, the use of the blood pump will cause negative pressure between the fistula needle and the pump, causing air to enter the circulation circuit, such as air leakage at the needle, air leakage at the connection between the needle and the blood pump, etc., causing air to enter The risk of air embolism due to blood loss seriously threatens the life safety of patients. Therefore, reasonable detection of the amount of air mixed in th...

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Problems solved by technology

[0003] However, in actual use, the use of the blood pump will cause negative pressure between the fistula needle and the pump, causing air to enter the circulation circuit, such as air leakage at the needle, air leakage at the connection between the needle and the blood pump, etc., causing air to enter The risk of air embolism due to blood loss seriously threatens the life safety of patients. Therefore, the reasonable detection of the amount of air mixed in the use of dialysis machines has become the focus of industry research.

[0004] At present, the test devices on the market mainly cut off the circulation line through the cooperation of the blood clip and the hose, that is, when air bubbles are detected, the blood clip is closed and the hose is pressed to realize the circuit cutoff, and then the air volume is measured , so as to obtain the amount of air mixed in the use of the dialysis machine, realize the detection of the performance of the dialysis machine, and ensure the safety of the dialysis machine. As a result, there is an error in the measured air volume, which makes it difficult to ensure the safety of the dialysis machine, which is not conducive to the use of the dialysis machine

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