Self-Expanding Coring Device for Intravascular Thrombus Removal
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Solution Overview
Problem
Current devices and methods for treating deep vein thrombosis (DVT) face challenges such as high incidence of re-occurrence, inability to handle large clot volumes, and complex treatments involving multiple devices and pharmaceuticals, which can lead to complications like bleeding and increased healthcare costs.
Innovation Solution
A thrombus extraction device comprising a self-expanding coring portion connected to a braided net is used to core and separate large volumes of thrombus from vessels, reducing the need for pharmaceuticals and minimizing bleeding risks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current devices and methods are used for treating DVT, then treatment can be performed, but the incidence of DVT re-occurrence is high and large clot volumes cannot be handled effectively
Solution Approach 1:
The device extracts thrombus from the vessel by advancing the catheter through the clot and using the extraction mechanism to remove the clot material from the vessel, directly addressing the need to handle large clot volumes effectively
Solution Approach 2:
The catheter is nested within the introducer sheath, and the extraction mechanism components are nested within the catheter structure, allowing for a compact delivery system that can be inserted through peripheral access sites while maintaining the capability to handle large clot volumes
2Reliability
If multiple treatment devices and pharmaceuticals are used, then comprehensive treatment can be achieved, but the treatment becomes complicated and bleeding risk increases
Solution Approach 1:
The device combines multiple functions into a single integrated system: the introducer sheath provides access and initial filtration, the catheter delivers the extraction mechanism, and the extraction mechanism itself performs both thrombus removal and potential filtration functions, reducing the need for multiple separate devices and pharmaceutical interventions
Solution Approach 2:
The extraction device is designed to handle various types and sizes of thrombus through a single mechanism, and the braided net structure can serve multiple purposes including capture, compression, and potential dissolution facilitation, reducing reliance on multiple specialized devices
Data Source
AI summary
Systems and methods for removal of thrombus from a blood vessel in a body of a patient are disclosed herein. The method can include: providing a thrombus extraction device including a proximal self-expanding member formed of a unitary fenestrated structure, a distal substantially cylindrical portion formed of a net-like filament mesh structure, and an inner shaft member connected to a distal end of the net-like filament mesh structure; advancing a catheter constraining the thrombus extraction device through a vascular thrombus, deploying the thrombus extraction; retracting the thrombus extraction device to separate a portion of the thrombus from the vessel wall and to capture the portion of the thrombus within the net-like filament mesh structure; and withdrawing the thrombus extraction device from the body to remove thrombus from the patient.