Extractor Catheter With Coring Mesh for Adherent Clot Removal
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing thrombectomy devices face challenges in safely and effectively removing large, adherent blood clots from blood vessels, particularly in complex vascular systems, often requiring multiple steps and risking vessel trauma.
Innovation Solution
A vascular introducer set with a dilator featuring a rotation mechanism for deploying a self-expanding funnel, allowing controlled expansion and retraction, combined with an extractor device having a 3-shaft assembly and a coring element with a mesh for clot capture, enabling safe and efficient clot removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional introducer sheath with a long funnel is used, then the funnel can be deployed to access the vessel, but the treatment length is reduced and the deployment process is less controlled
Solution Approach 1:
The funnel is designed with dynamic deployability, transitioning from a compressed delivery state to an expanded functional state. The rotation mechanism enables the funnel to dynamically adjust its configuration, providing controlled deployment while maintaining adequate treatment length within the vessel.
Solution Approach 2:
The funnel is nested within the dilator cap during delivery, allowing it to be compacted for insertion while maintaining its full functional length once deployed. This nesting arrangement enables the funnel to achieve both compact delivery and adequate treatment length.
2Reliability
If the funnel is deployed gradually via rotation mechanism, then the deployment is safer and more controlled, but the device complexity increases
Solution Approach 1:
The rotation mechanism serves as an intermediary control system between the operator and the funnel deployment. It provides a mechanical translation of rotational input into controlled axial advancement of the funnel, enabling safe and gradual deployment while maintaining reasonable device complexity through mechanical advantage.
3Ease of operation
If the cap is retracted toward the introducer sheath, then the dilator can be withdrawn, but the funnel must be properly constrained during this process
Solution Approach 1:
The funnel constraint system is dynamic, allowing the cap to transition between constrained and retracted positions. During dilator withdrawal, the cap remains in the retracted position to maintain funnel constraint, and can be subsequently advanced to deploy the funnel as needed.
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
Facilitates the safe and effective extraction of high-volume, long-length clots with adherent components by minimizing vessel trauma and enhancing clot capture efficiency.
Implementation Method 1
a self-expanding funnel coupled to the tube... At least a portion of the self-expanding funnel is disposed within the cap such that the self-expanding funnel is maintained in a constrained state by the cap... rotating a first component of the adjustment system about an axis that extends through the cap advances the cap away from the introducer sheath such that the self-expanding funnel is unconstrained and able to transition to an expanded state
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.