Integrated Membrane Oxygenator with Direct Blood Filtration
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Solution Overview
Problem
Current membrane oxygenators require multiple installation steps and hose connections, increasing the risk of contamination and blood damage due to non-self system contact and non-smooth transitions during extracorporeal circulation.
Innovation Solution
An integrated membrane oxygenator design that combines an oxygenator and a filter, with a shell structure including a mandrel, oxygen pressure membrane, and temperature-changing membrane, where blood is oxygenated and filtered in a single unit, reducing contact with non-self systems and minimizing installation complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If hose connection is used between oxygenator and filter, then installation flexibility is improved, but device complexity and contamination risk increase
Solution Approach 1:
The patent integrates the oxygenator and filter into a single unified device with direct internal connection between the oxygenator chamber and filter chamber, eliminating the need for external hose connections. This merging approach maintains installation simplicity while reducing the number of connection points and potential contamination sites.
2Ease of operation
If hose connection is used between oxygenator and filter, then installation flexibility is improved, but blood damage increases due to non-smooth transition
Solution Approach 1:
By combining the oxygenator and filter into a single device with direct internal fluid passage, the patent eliminates the hose connection interface that creates non-smooth transitions. The integrated design provides a continuous smooth blood flow path from the oxygenator chamber through the filter chamber, reducing shear stress and blood damage.
3Adaptability or versatility
If multiple installation steps are required, then device functionality is improved, but time consumption and contamination risk increase
Solution Approach 1:
The patent combines multiple functions (oxygenation and filtration) into a single integrated device that can be installed as one unit, reducing the number of installation steps. The device maintains full functionality with both oxygenation and filtration capabilities while requiring only a single installation procedure, thereby reducing time consumption and contamination risk.
4Adaptability or versatility
If multiple installation steps are required, then device functionality is improved, but contamination risk increases
Solution Approach 1:
By integrating the oxygenator and filter into a single device with internal direct connection, the patent eliminates multiple installation steps and external connection points. This reduces the opportunities for contamination during installation while maintaining both oxygenation and filtration functions within the sealed integrated structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The integrated design reduces blood damage and contamination risks by minimizing contact with non-self systems and simplifying installation, enhancing gas exchange and filtration efficiency while maintaining effective oxygenation and temperature control.
Implementation Method 1
an oxygenation structure arranged in the inner cavity of the shell may include a mandrel, an oxygen pressure membrane, and a temperature-changing membrane
Implementation Method 2
The temperature-changing membrane may be arranged around the oxygen pressure membrane, and the temperature-changing membrane may be connected with the first water path space and the second water path space
Implementation Method 3
The filter may be configured to filter an embolus (a bubble or a solid particle) in the blood, which may be the last safety barrier for blood to be returned to the body
Data Source
AI summary
The present disclosure discloses an integrated membrane oxygenator including an oxygenator and a filter attached to the oxygenator. The oxygenator may include an upper cover, a lower cover, a shell, and an oxygenation structure. Two ends of the filter may be respectively connected with the upper cover and the lower cover. The oxygenation structure may include a mandrel, an oxygen pressure membrane, and a temperature-changing membrane arranged inside the shell. The filter may include a filter shell, a diversion structure, and a filter screen arranged inside the filter shell. An inlet of the filter shell may be connected with a blood outlet on the lower cover of the oxygenator, and blood oxygenated by the oxygenator may directly enter the filter for filtration.