Embolic Protection Device Reduced Profile Delivery
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing embolic protection devices have a large cross-sectional profile during delivery and retrieval, increasing the risk of blood clots and thrombi release into the blood flow during stenosis procedures, and there is a need for devices with a reduced profile to minimize this risk.
Innovation Solution
An embolic protection device with a base that transitions between an expanded state for capturing emboli and a collapsed state for minimization, featuring a support portion and filter portion that deploy within the body vessel to capture emboli while maintaining a reduced cross-sectional profile, and a collector tube for delivery and retrieval.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If embolic protection devices are used to capture emboli during stenosis procedures, then embolic protection is provided, but the cross-sectional profile of the device is large during delivery and retrieval, increasing the risk of blood clots and thrombi release
Solution Approach 1:
The filter portion of the embolic protection device is designed to be dynamically configurable between a compressed state for delivery and an expanded state for filtering. The support portion includes elements that can transition between compressed and expanded configurations, allowing the device to adapt its cross-sectional profile during different operational phases while maintaining embolic protection capability
Solution Approach 2:
The filter portion is nested within the support portion in a compressed configuration during delivery, allowing the device to pass through the stenotic lesion with a reduced cross-sectional profile. Upon deployment, the nested structure expands to provide full embolic protection, effectively hiding the large-profile filtering elements within the smaller delivery catheter
2Reliability
If the device is deployed with a large cross-sectional profile to ensure effective emboli capture, then embolic protection is improved, but the risk of contact with the stenotic lesion increases, potentially releasing blood clots and thrombi
Solution Approach 1:
The device is segmented into distinct functional portions: a support portion for structural integrity and navigation, and a filter portion for emboli capture. This segmentation allows the support portion to navigate the stenotic lesion with a smaller profile while the filter portion remains protected within the delivery system until needed downstream
Solution Approach 2:
The device is delivered in a compressed state through the stenotic lesion before being expanded for emboli capture. This preliminary action of navigating in a low-profile state prevents contact-related harm, followed by expansion in a safer location to perform the embolic protection function
3Object-affected harmful factors
If the device maintains a reduced cross-sectional profile during delivery and retrieval, then the risk of blood clots and thrombi release is minimized, but the device must be able to effectively capture emboli when deployed
Solution Approach 1:
The filter portion transitions from a compressed low-profile state during delivery to an expanded high-capacity state during retrieval, dynamically adapting its cross-sectional profile to minimize harm during navigation while maximizing emboli capture effectiveness during the protective phase
Solution Approach 2:
The device changes its physical parameters (cross-sectional profile, filter surface area) between delivery and retrieval phases. During delivery, the filter portion is compressed to a small profile; during retrieval, it expands to provide large surface area for effective emboli capture, thus changing parameters to satisfy both requirements
Data Source
AI summary
A device for capturing emboli during treatment of a stenotic lesion in a body vessel is disclosed. The device comprises a base having expanded and collapsed states, and proximal and distal portions. The distal portion has a support portion configured to deploy in the body vessel when the base is in the expanded state. The device further comprises a filter portion disposed on the distal portion of the base. The filter portion includes a lip extending to a filter body to a filter end. The filter portion is configured to engage the support portion when deployed to define an opening of the filter portion for capturing emboli. The device further comprises a collector through which the base is slideably disposed for delivery and retrieval of the device.