Blood-flow-path Switching Device with Movable Communicating Part
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Solution Overview
Problem
Existing blood-flow-path switching devices require significant force to open and may not ensure a sufficient flow path, leading to potential hemolysis and contamination risks during blood collection and storage.
Innovation Solution
A blood-flow-path switching device with a tube-shaped body and a movable communicating part that blocks and opens flow paths with ease, ensuring a sufficient flow path by simply pushing the communicating part, and a cover part to maintain cleanliness and prevent leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a blocking part with a breaking part is used to open the flow path, then the flow path can be opened, but a considerably large force is required for the breaking operation making it difficult to operate
Solution Approach 1:
The blocking part is changed from a static breakable structure to a dynamic movable structure. The blocking part can move along the axial direction of the body tube, transitioning between blocking and non-blocking positions. This dynamic movement allows the flow path to be opened by simply moving the blocking part rather than applying force to break it, significantly reducing the opening force required while maintaining reliable flow path control.
2Adaptability or versatility
If a multiway valve is used to switch flow paths, then flow path switching is achieved, but the flow of blood is disrupted during valve rotation causing hemolysis
Solution Approach 1:
The flow path switching function is segmented into two independent components: the blocking part that controls flow path opening/closing by moving along the axial direction, and the branching tube that provides alternative flow routes. This segmentation allows flow path switching without requiring rotation of a single valve component, thereby maintaining blood flow continuity and preventing hemolysis while achieving versatile flow path control.
3Reliability
If a blocking part is broken to open the flow path, then the first flow path is opened, but the breaking may be insufficient causing poor blood flow and hemolysis
Solution Approach 1:
The blocking part is designed to move dynamically along the axial direction rather than being broken. This movement can be precisely controlled to ensure complete opening of the flow path without the uncertainties of breaking operations. The movable design eliminates manufacturing precision issues related to breaking completeness while maintaining reliable flow path opening.
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
Enables easy operation and secure, sufficient blood flow switching, reducing the risk of hemolysis and contamination, and ensuring efficient blood collection and storage.
Implementation Method 1
the communicating part is movable in the axial direction in the hollow section of the body tube
Data Source
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AI summary
In a blood-flow-path switching device and a blood-bag system, a tube-shaped body (68) includes a body tube (69) extending in an axial direction and a branching tube (71) extending in a direction branching from the axial direction, and a blocking part (74) is provided in a hollow section (69c) of the body tube (69). A communicating part (70) movable in the axial direction is provided in the hollow section (69c). By moving the communicating part (70) in a pushing direction and creating an opening by penetrating the blocking part (74), a communication of a first port (86) and a third port (90) is blocked, and at the same time, the first port (86) and a second port (88) are communicated with each other.