Thrombectomy Retrieval Device with Inward Protrusions
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Solution Overview
Problem
Current methods for removing blood clots from blood vessels are often invasive and inefficient, leading to complications such as reduced blood flow and potential organ damage, and existing technologies lack effective solutions for quickly and safely restoring patency in the vascular system.
Innovation Solution
The development of expandable retrieval devices with inwardly and outwardly protruding features that can be deployed within blood vessels to engage and remove thrombi, utilizing self-expanding frames and protruding features to scrape and capture clots while minimizing damage to vessel walls.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current methods for removing blood clots are used, then thrombus removal can be achieved, but the procedures are invasive and cause damage to vessel walls
Solution Approach 1:
The retrieval device employs a flexible frame structure that can conform to the vascular anatomy while maintaining its shape. The frame is constructed from interconnected struts that provide structural integrity yet remain flexible enough to navigate curved vessels without causing trauma to the vessel wall, resolving the contradiction between effective thrombus engagement and vessel wall protection.
Solution Approach 2:
The protruding features serve as intermediaries between the retrieval device and the thrombus. These features extend from the frame to engage the clot material, allowing the device to capture and remove thrombi without requiring direct contact between the frame and the vessel wall, thereby reducing vessel wall damage while maintaining thrombus removal effectiveness.
2Productivity
If thrombus removal is performed quickly, then blood flow restoration is improved, but the risk of vessel damage increases
Solution Approach 1:
The device is pre-configured with protruding features that are ready to engage thrombus material immediately upon deployment. The frame and protruding features are positioned in advance within the vessel, allowing for rapid thrombus capture and removal without requiring additional manipulation steps that could increase vessel wall trauma, thus achieving quick thrombus removal while minimizing vessel damage.
3Reliability
If protruding features are used to engage thrombus, then thrombus capture effectiveness is improved, but the complexity of the device increases
Solution Approach 1:
The retrieval device is segmented into a frame structure with multiple discrete protruding features distributed along its length. Each protruding feature is a separate element that can be independently formed and positioned, allowing the device to engage thrombus at multiple points simultaneously while maintaining a relatively simple overall structure. This segmentation approach improves thrombus engagement effectiveness without proportionally increasing device complexity.
Data Source
AI summary
A retrieval device can include inwardly facing protruding features that facilitate engagement and capture of a thrombus or other mass from a body lumen of a patient. The protruding features can deploy from a frame of the retrieval device to extend radially inwardly toward an opposing side of the frame. When deployed into a thrombus, the protruding features engage and urge the thrombus as the retrieval device moves to facilitate capture.