Bioartificial Organ with Alternating Stem Cell and Fluid Channels
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Solution Overview
Problem
Current bioartificial organ devices, such as those using hollow fiber membranes, face issues with cell viability and longevity, leading to frequent device replacements and increased size due to packaging constraints, making them ineffective for long-term patient support and less portable.
Innovation Solution
A stem cell organ device with alternating stem cell and fluid channels separated by a membrane, where stem cells are loaded into channels with guides to ensure even distribution and increased molecular exchange, allowing for prolonged viability and portability by using a microchannel system with a microfiltration membrane for nutrient and toxin transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If hollow fiber membranes are used for cell support, then cell transfer function is improved, but cell viability and longevity deteriorate
Solution Approach 1:
The device segments the hollow fiber membrane into multiple sections with alternating patterns of spacers and membrane material. This segmentation creates discrete cell housing regions separated by fluid communication channels, allowing cells to be contained while maintaining viability and enabling molecular transfer through the membrane segments without compromising cell longevity.
2Productivity
If hollow fiber membranes are used for cell support, then molecular transfer is improved, but device portability deteriorates
Solution Approach 1:
The device employs thin film structures for the membrane and spacer components, creating a lightweight yet functional bioartificial organ. The alternating pattern of thin membrane segments and spacer elements provides sufficient structural support and molecular transfer capability while minimizing overall device weight and packaging space, thereby improving portability.
3Device complexity
If cells are injected into channels without guides, then device complexity is reduced, but cell distribution uniformity deteriorates
Solution Approach 1:
The inlet manifold is designed with integrated guides that automatically direct cell flow during the injection process. These guides passively channel cells through the manifold and into the hollow fiber membrane sections without requiring external control mechanisms or complex active systems, achieving uniform cell distribution while maintaining relatively simple device architecture.
4Reliability
If frequent device replacement is performed, then cell viability is maintained, but treatment continuity deteriorates
Solution Approach 1:
The device incorporates redundant hollow fiber membrane sections arranged in an alternating pattern with spacers. This configuration provides built-in reserves of functional membrane areas that can continue to support cells and perform molecular transfer even as some sections undergo cell death or degradation, thereby extending overall device longevity and reducing the frequency of replacements needed to maintain treatment continuity.
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 stem cell organ device enhances cell viability and longevity, enabling effective long-term support for patients by maintaining protein secretion levels over extended periods, thus improving patient care with a more portable and efficient bioartificial organ system.
Implementation Method 1
a microchannel system with a microfiltration membrane for nutrient and toxin transfer
Implementation Method 2
one or more interior surfaces of the first inlet manifold may include guides. As such, when cells are injected into the first channel, the cells may spread more evenly over and across the first channel
Data Source
AI summary
Methods and systems are provided for a stem cell organ device including an array of alternating stem cell channels and fluid channels. In one example, a method may include loading a stem cell channel with stem cells and flowing blood through a fluid channel in order to allow an exchange of molecules between the stem cells and the blood.