Hollow fiber membrane oxygenator and method

Abstract

The invention discloses a hollow fiber membrane oxygenator and a method, and belongs to the technical field of medical devices. The hollow fiber membrane oxygenator is characterized in that the inner cavity of an outer shell is connected with a middle shell; the outer shell and the middle shell define the cavity of an oxygenation room; the inner cavity of the middle shell is connected with an inner shell; the cavity of a variable-temperature room is formed between the middle shell and the inner shell; an upper cover is connected to the top of the outer shell; an oxygenation membrane is connected to the cavity of the oxygenation room between the outer shell and the middle shell; a variable-temperature membrane is connected to the cavity of the variable-temperature room between the middle shell and the inner shell; a lower bottom is connected with the bottom of the outer shell, and is partitioned into a lower bottom inner cavity, a lower bottom middle cavity and a lower bottom outer cavity; the lower bottom inner cavity is a blood path with a blood inlet; the lower bottom middle cavity is a water path with a water outlet; the top side face of the outer shell is connected with an arterial blood air outlet; the bottom side face of the outer shell is connected with a blood outlet; an arterial blood sampling port is formed in the blood outlet; the bottom side face of the outer shell is connected with a temperature measuring port; the upper cover is partitioned into an upper cover inner cavity and an upper cover outer cavity; the upper cover inner cavity is taken as a water path; the upper cover inner cavity is connected with a water inlet; the upper cover outer cavity is connected with an air inlet; a cardioplegic solution injection port / arterial blood recirculation port is connected to a lower bottom side face.

Description

technical field [0001] The invention relates to a hollow fiber membrane oxygenator and a method, belonging to the technical field of medical devices. Background technique [0002] Extracorporeal circulation is to lead the venous blood outside the body for oxygenation, and then infuse it back into the body. The oxygenator is an essential device for extracorporeal circulation in cardiovascular surgery. It replaces the lung function to oxygenate the blood (exclude CO2 in the blood. , increasing O2 in the blood) and changing temperature. A high-performance oxygenator will greatly increase the success rate of the operation, reduce the occurrence of postoperative complications, and improve the quality of life of the patient after operation. The oxygenator that is widely used in clinical practice in China today is the bubbling oxygenator, which uses the principle of gas foaming to oxygenate blood in a foaming barrel. The oxygenation effect is poor and the safety is low. Membrane o...

AI Technical Summary

Problems solved by technology

[0007] 2. Low efficiency of oxygenation and temperature change;

[0008] 3. The structure is unreasonable and the pre-charge volume is large;

[0009] 4. High blood pressure drop, variable temperature water pressure drop, and high gas pressure drop;

[0010] 5. The position of the arterial blood vent is unreasonable, and the air bubbles in the blood cannot be effectively removed, which increases the risk of surgery

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