Blood Treatment Filter With Compressed Edge Gripper
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Solution Overview
Problem
Blood processing filters with hard containers face challenges in ensuring complete removal of undesirable components without reducing blood treatment efficiency, due to uneven compression and deformation issues during filtering.
Innovation Solution
A blood processing filter design where the filter element is compressed 0.05 to 0.5 times its original thickness by a gripper, with a rib on the inner surface of the container elements to maintain even thickness and prevent side leakage, ensuring uniform use of the filter element and maintaining blood treatment efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the filter element is highly compressed to remove undesirable components, then the removal efficiency improves, but the blood treatment efficiency decreases due to increased pressure loss
Solution Approach 1:
The patent applies different compression levels to different regions of the filter element. The outer edge portion is compressed to 0.05-0.5 times the original thickness to prevent side leakage and ensure complete removal of undesirable components, while the central portion maintains higher porosity to allow efficient blood flow. This local differentiation resolves the contradiction between removal efficiency and treatment efficiency.
2Adaptability or versatility
If the container is flexible to adapt to pressure changes, then the device can accommodate pressure variations, but the filter element is pressed against the outlet side blocking the outlet opening
Solution Approach 1:
The container is designed with differentiated rigidity: the inlet-side container element is made hard to resist swelling and prevent filter element displacement, while the outlet-side container element remains flexible to accommodate pressure changes. This local differentiation resolves the contradiction between adaptability and operational ease.
3Stability of the object's composition
If the filter element is compressed uniformly to maintain structure, then the filter element structure is maintained, but side leakage occurs reducing removal efficiency
Solution Approach 1:
The filter element is compressed non-uniformly with the outer edge portion compressed to 0.05-0.5 times the original thickness to prevent side leakage, while the central portion maintains higher porosity for efficient blood flow. This local differentiation resolves the contradiction between structural stability and removal efficiency.
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 solution effectively prevents incomplete removal of undesirable components while maintaining blood treatment efficiency by ensuring uniform compression and reducing the risk of side leakage, allowing for high-density compression of the filter element.
Implementation Method 1
a sheet-shaped filter element; and a hard container that includes an inlet-side container element and an outlet-side container element that are disposed to clamp the filter element
Implementation Method 2
the inlet-side container element and the outlet-side container element are provided with a gripper that clamps and compresses an outer edge portion of the pair of filtering surfaces, the thickness of the filter element is compressed by the gripper to be 0.05 to 0.5 times the thickness
Implementation Method 3
a blood preparation bag containing the blood preparation to be processed is connected to an inlet of the blood processing filter, the blood preparation bag is placed at a position higher than the blood processing filter by approximately 20 to 100 cm, thereby introducing the blood preparation from the blood preparation bag into the blood processing filter due to the action of gravity
Data Source
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AI summary
A blood processing filter for removing undesirable components from liquid containing a blood component or blood, comprises: a sheet-shaped filter element; and a hard container that includes an inlet-side container element and an outlet-side container element that are disposed to clamp the filter element, and has an internal space separated by the filter element into an inlet space and an outlet space, wherein the filter element includes a filtering surface on a side of the inlet space, a filtering surface on a side of the outlet space, and an end surface along peripheries of the pair of filtering surfaces, the inlet-side container element and the outlet-side container element are provided with a gripper that clamps and compresses an outer edge portion of the pair of filtering surfaces, and a thickness of the filter element is compressed at the gripper to be 0.05 to 0.5 times the thickness.