Connection Device With Flow Adjustment Walls for Blood Filtration
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Solution Overview
Problem
Existing connection devices for flow channels and housings accommodating films experience fluid flow stagnation and clot formation, particularly in medical instruments like blood filtration devices, due to changes in blood flow direction and diameter.
Innovation Solution
Incorporation of flow channel adjustment walls within the internal cavity of the connection device to adjust fluid flow, ensuring smooth transition between the flow channel and the housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single blood inlet connects to multiple blood flow channel layers, then the device structure is simplified, but fluid flow stagnation and clot formation occur due to flow direction changes and diameter variations
Solution Approach 1:
The internal cavity is segmented into multiple flow channels using partition walls. Each partition wall divides the cavity to create separate flow paths, ensuring that fluid from each blood flow channel layer has a dedicated route to the film, eliminating stagnation zones while maintaining structural organization
Solution Approach 2:
The partition walls are strategically positioned to create locally optimized flow channels. Each flow channel is designed with specific geometry and direction tailored to the local requirements of connecting blood flow channel layers to the film, ensuring smooth flow transition and preventing clot formation in critical areas
2Adaptability or versatility
If blood flow direction and diameter change in the connection device, then connection between flow channel layers and film is achieved, but blood retention and clot formation occur
Solution Approach 1:
The partition walls are pre-configured in the internal cavity to establish smooth flow paths before blood enters the device. This preliminary structural arrangement ensures that blood flow direction changes are gradual and controlled, preventing turbulence and blood retention that could lead to clot formation
Solution Approach 2:
The flow channels created by the partition walls are designed with curved transitions rather than sharp angles. The curved geometry of the flow paths allows blood to change direction smoothly, reducing flow stagnation and preventing clot formation while maintaining connection flexibility
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
Prevents fluid stagnation and reduces clot formation by maintaining consistent fluid flow, enhancing the functionality and safety of medical instruments.
Implementation Method 1
the flow of the fluid is adjusted by the plurality of flow channel adjustment walls 13
Data Source
AI summary
Provided are a connection device in which flow stagnation does not readily occur, and a method for manufacturing the same. This connection device (1) has an internal cavity (9) for connecting, in a state allowing fluid transport, a flow path (3) and a housing (7) accommodating membranes (5), the connection device (1) also having a plurality of flow path adjustment walls (13) provided in the internal cavity (9). The method for manufacturing the connection device (1) includes a step for installing, in a main body section (11) of the connection device (1), a plurality of virtual flow path layers having thicknesses corresponding to inter-membrane flow paths (17) formed by a plurality of stacked membranes (5), a step for forming the plurality of flow path adjustment walls (13) among the plurality of virtual flow path layers, and a step for obtaining inter-adjustment-wall flow paths (15) formed by the plurality of flow path adjustment walls (13) by forming the plurality of flow path adjustment walls (13) and then removing the virtual flow path layers.