Membrane oxygenator

Abstract

A membrane oxygenator is disclosed in the invention and comprises an upper cover, a lower cover, a shell and an oxygenation structure, the two ends of the shell are connected with the upper cover and the lower cover respectively, the oxygenation structure comprises a core shaft, an oxygen pressure membrane and a temperature changing membrane, the upper end of the core shaft enters a first blood path space of the upper cover, the lower end of the core shaft is opposite to a blood outlet in the lower cover, the oxygen pressure membrane is arranged around the core shaft, the oxygen pressure membrane is communicated with the first gas path space of the upper cover and the second gas path space of the lower cover, the temperature changing membrane wraps the oxygen pressure membrane, and the temperature changing membrane is communicated with the first water path space of the upper cover and the second water path space of the lower cover; and a gap is formed between the temperature changing membrane and the inner wall of the shell, the width of the gap is gradually reduced from the upper cover to the lower cover, and the blood inlet is formed in the position, close to the upper cover, of the shell. The proportion that blood transversely penetrates through the oxygen pressure membrane can be increased, and the oxygenation effect of the membrane type oxygenator is improved.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a membrane oxygenator. Background technique [0002] Membrane oxygenator is a medical device that stops the heart and replaces the lungs. It has the function of regulating the oxygen and carbon dioxide content in the blood. It is an essential medical equipment for cardiovascular surgery, and it is also necessary for the treatment of acute respiratory diseases and the stage of waiting for lung transplantation. medical equipment. According to the principle of alveolar gas exchange, the membrane oxygenator integrates the functions of oxygenation, temperature change, blood storage and filtration. Carbon dioxide is exchanged into arterial blood, and then reinfused into the human arterial system to maintain the supply of oxygenated blood to human organs and tissues, and temporarily replace the lung function during the operation to meet the needs of patients during the operatio...

AI Technical Summary

Problems solved by technology

[0003] Gas exchange capacity is a main functional indicator of membrane oxygenators. There are attempts in related technologies to improve the gas exchange capacity of membrane oxygenators by increasing the area of ​​oxygen pressure membranes. However, increasing the area of ​​oxygen pressure membranes also increases Reduce the amount of blood priming and the contact area between blood and artificial materials, which will cause more blood loss and damage, and negatively affect the postoperative recovery of patients

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