Occlusion Wire Assembly for Blood Flow Control and Device Passage
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Solution Overview
Problem
Current occlusion assemblies for vascular procedures complicate the management of blood flow while allowing additional devices into the vessel, making it difficult to perform various procedures efficiently.
Innovation Solution
A wire assembly with a shaft and an occlusion member that can transition between collapsed and expanded configurations, allowing for controlled blood flow occlusion and enabling the passage of other devices without significant interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the occlusion member is expanded to stop blood flow, then blood flow occlusion is achieved, but the cross-sectional dimension increases and inhibits movement of additional devices into the vessel
Solution Approach 1:
The occlusion member is designed to dynamically change its cross-sectional dimension between an expanded configuration (for effective blood flow occlusion) and a collapsed configuration (for allowing device passage). This dynamic transformation enables the same component to fulfill multiple functional requirements at different operational stages.
Solution Approach 2:
The occlusion member can be positioned within or alongside the wire assembly shaft, allowing it to be nested within the overall device structure when not in use. This nesting approach minimizes the space occupied by the occlusion member during device insertion and allows additional devices to pass through the vessel alongside the wire assembly.
2Reliability
If the occlusion member maintains a large cross-sectional dimension for effective occlusion, then blood flow cessation is improved, but device insertion and withdrawal become difficult
Solution Approach 1:
The occlusion member transitions between expanded and collapsed states to simplify the procedural steps. When expanded, it provides reliable flow stasis; when collapsed, it facilitates device insertion and withdrawal without requiring complex maneuvers or additional tools.
3Adaptability or versatility
If the wire assembly allows additional devices to pass through, then procedural versatility is improved, but blood flow occlusion effectiveness may be compromised
Solution Approach 1:
The occlusion member can be expanded to provide effective occlusion when needed and collapsed to allow additional devices to pass through when procedural versatility is required. This dynamic capability enables the wire assembly to adapt to different procedural needs without compromising either occlusion effectiveness or versatility.
Solution Approach 2:
The occlusion member can be periodically expanded and collapsed during the procedure to alternate between providing flow occlusion and allowing device passage. This periodic action enables the operator to optimize between occlusion effectiveness and procedural versatility at different stages of the intervention.
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3A~3B
AI summary
Wire assemblies and methods for blood vessel occlusion in vascular procedures. The wire assemblies comprise a shaft and an occlusion member. The shaft includes a proximal end portion, a distal end portion spaced from the proximal end portion, a lumen, and a cross-sectional dimension that is perpendicular to the longitudinal axis. The occlusion member is configured to transition between a collapsed configuration and an expanded configuration.