Three-Shaft Clot Extractor for Controlled Funnel Deployment
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Solution Overview
Problem
Current thrombectomy devices face challenges in safely and effectively removing large, adherent blood clots from blood vessels, particularly in the brain or other vital organs, due to limitations in deployment mechanisms and clot extraction efficiency.
Innovation Solution
A vascular introducer set with a dilator featuring a rotation mechanism for deploying a self-expanding funnel and an extractor device with a 3-shaft assembly and a coring element for clot extraction, allowing controlled deployment and efficient clot capture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional funnel deployment mechanism is used, then the device structure is simple, but the funnel cannot be deployed gradually and safely
Solution Approach 1:
The funnel deployment mechanism transitions from a static structure to a dynamic one through the rotation of the first component, which allows the cap to advance gradually and control the funnel's expansion. This dynamic mechanism enables safe deployment by allowing controlled progression rather than sudden expansion.
Solution Approach 2:
The deployment mechanism is divided into separate functional components: the first component for rotation, the cap for constraining the funnel, and the funnel itself. This segmentation allows each component to perform its specific function independently, with the cap advancing in controlled stages to safely deploy the funnel.
2Length of moving object
If the funnel is made longer to increase treatment length, then the treatment capability is improved, but the device becomes more difficult to manage and deploy
Solution Approach 1:
The longer funnel is made manageable through the dynamic rotation mechanism that controls its deployment. The first component's rotation allows the cap to advance in controlled increments, enabling the operator to manage the deployment of a longer funnel without compromising control or safety.
3Productivity
If the cap is advanced quickly to deploy the funnel rapidly, then the procedure time is reduced, but the safety and control of deployment is compromised
Solution Approach 1:
The cap advancement is performed through periodic rotation of the first component rather than continuous or rapid movement. This periodic action allows controlled, incremental advancement that maintains safety while achieving deployment at an acceptable pace, balancing productivity with reliability.
Data Source
AI summary
Systems and apparatuses are provided for clot extraction. In a first aspect, a system includes a first shaft, a second shaft, a third shaft, a coring element including a blade, and a mesh. The coring element has a first end and a second end. The first end of the coring element is coupled to the first shaft and the second end of the coring element is coupled to the second shaft. The mesh includes an open end and a second end. The open end of the mesh is coupled to a proximal portion of the coring element and the second end of the mesh is coupled to the third shaft through a tip structure. Other aspects and features are also claimed and described.