Undulating Clot Retrieval Device for Minimal Compression Removal
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Solution Overview
Problem
Current devices for removing acute blockages from blood vessels, such as clots, often face challenges in effectively dislodging and retrieving clots without significant compression or displacement, which can complicate the process and reduce efficiency.
Innovation Solution
A clot retrieval device with a clot engaging element that transitions from a constrained delivery configuration to an expanded deployed configuration, featuring a longitudinally extending undulating edge and a clot engaging section that can be curvilinear or helical, allowing for minimal compression and secure engagement with the clot, facilitating its removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If current devices compress and displace clots to remove them, then clot removal is achieved, but the process becomes more complex and less efficient
Solution Approach 1:
The device employs an undulating edge with wave-like form instead of a straight or compressed configuration. This curved geometry allows the device to engage and wrap around the clot naturally, facilitating removal through gentle engagement rather than forceful compression or displacement, thereby simplifying the removal process while maintaining efficiency
Solution Approach 2:
The device changes its geometric parameters by transitioning from a constrained delivery configuration to an expanded deployed configuration with undulating edges. This parameter change enables the device to adapt to the clot's shape and size, allowing effective engagement and removal without requiring complex compression or displacement mechanisms
2Productivity
If significant force is applied to remove clot, then clot removal is achieved, but the clot may be compressed or displaced causing complications
Solution Approach 1:
The undulating edge with wave-like form naturally conforms to the clot's cylindrical shape, distributing engagement force along the curved surface rather than concentrating it at single points. This curved geometry enables effective clot engagement and removal through wrapping and gentle engagement, avoiding the need for significant compressive or displacing forces that could cause complications
Solution Approach 2:
The undulating edge acts as an intermediary between the device and the clot, providing a geometry that naturally interfaces with the clot's shape. This intermediate geometric form facilitates smooth engagement and removal without direct application of compressive or displacing forces, thereby avoiding clot damage while maintaining removal effectiveness
Data Source
AI summary
A clot retrieval device for removing an occlusive clot from a blood vessel. The device includes a clot engagement section having a constrained delivery configuration and an expanded deployed configuration, wherein in the expanded deployed configuration. The clot engagement section can include a plurality of peak sections configured to vary contact pressure between the clot and the device along a length of the device; and a plurality of troughs between respective peak sections comprising a clot reception space. Each peak is configured to exert a relatively high compressive force on the clot whereas each trough is configured to exert little or no compressive force on the clot.