Exchangeable Distal Tip Assembly for Emboli Protection
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Solution Overview
Problem
There is a need for improved delivery systems that provide distal protection features, especially for the placement of self-expandable intraluminal medical devices within body vessels, as existing methods lack effective solutions for capturing emboli and ensuring safe deployment of these devices.
Innovation Solution
A delivery system comprising an elongate tubular member with a distal tip assembly that includes a distal protection device and a self-expandable intraluminal medical device, where the distal tip assembly is slidably disposed within the tubular member and features separable portions joined at a junction, allowing for the deployment of both the distal protection device and the medical device at specific points within the body vessel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a delivery system is designed to provide distal protection during placement of self-expandable intraluminal medical devices, then safety against emboli is improved, but device complexity increases
Solution Approach 1:
The distal protection device is nested within the distal tip assembly, which itself is contained within the elongate tubular member. This nested configuration allows multiple functional components to be integrated in a compact manner, providing emboli protection while maintaining a manageable overall device structure that can be delivered through catheters
Solution Approach 2:
The delivery system is divided into distinct functional segments: the elongate tubular member for delivery, the distal tip assembly for protection and deployment, and the self-expandable medical device for final placement. The distal tip assembly further separates into proximal and distal portions joined at a junction, allowing independent manipulation and deployment of the protection device versus the medical device
2Ease of operation
If the distal tip assembly includes separable portions joined at a junction, then ease of deployment is improved, but device complexity increases
Solution Approach 1:
The distal tip assembly is segmented into proximal and distal portions that can be independently manipulated. This segmentation allows the operator to deploy the distal protection device first by manipulating the distal portion, then deploy the self-expandable medical device by manipulating the proximal portion, providing sequential control that simplifies the deployment process
Solution Approach 2:
The junction acting as an intermediary connection between the proximal and distal portions allows for controlled separation and independent movement of each segment. This intermediary joint enables the operator to manipulate one portion without immediately affecting the other, facilitating staged deployment while maintaining a relatively simple overall structure
Data Source
AI summary
Medical device delivery systems that include a distal protection feature are provided. A distal tip member that includes a distal protection device and a mounting region for a self-expandable, intraluminal medical device is slidably disposed within a passageway defined by a tubular member.