Convertible Embolic Protection Device Crossing Mechanism
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Solution Overview
Problem
Existing embolic protection devices face challenges in crossing treatment sites, as fixed wire systems may not be suitable for all anatomies, requiring a conversion to wire of choice systems, which increases procedural time and complexity.
Innovation Solution
A convertible embolic protection device that can initially function as a fixed wire system and easily convert into a wire of choice system, featuring a mesh element expandable from a collapsed to an expanded configuration, an elongate tubular element with a lumen to accommodate a standard guidewire, and a shaft attached to the tubular element, allowing for both fixed wire and wire of choice approaches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a fixed wire system is used to cross treatment sites, then the system can be deployed quickly, but it cannot cross all anatomical configurations
Solution Approach 1:
The device allows dynamic conversion between fixed wire and wire of choice configurations. The filter and sheath are pre-assembled for fixed wire use, but can be separated to allow wire of choice approach when anatomical challenges arise, enabling the system to adapt its crossing mechanism based on real-time anatomical conditions.
Solution Approach 2:
The embolic protection device incorporates dual functionality: it can operate as a fixed wire system for straightforward anatomies and convert to a wire of choice system for complex anatomies. This multi-functionality ensures the device can handle diverse anatomical configurations without requiring complete system replacement.
2Adaptability or versatility
If a wire of choice system is used to cross treatment sites, then all anatomical configurations can be crossed, but the procedure becomes more time consuming
Solution Approach 1:
The filter and sheath are pre-assembled in a fixed wire configuration before patient intervention. This preliminary assembly enables rapid deployment for suitable anatomies. Only when anatomical challenges are encountered does the system require conversion to wire of choice, minimizing the time spent on complex maneuvers.
Solution Approach 2:
The device allows dynamic conversion between fixed wire and wire of choice configurations. The filter and sheath are pre-assembled for fixed wire use, but can be separated to allow wire of choice approach when anatomical challenges arise, enabling the system to adapt its crossing mechanism based on real-time anatomical conditions.
3Device complexity
If fixed wire systems are used, then procedural complexity is reduced, but the system must be withdrawn and replaced if crossing fails
Solution Approach 1:
The embolic protection device incorporates dual functionality: it can operate as a fixed wire system for straightforward anatomies and convert to a wire of choice system for complex anatomies. This multi-functionality ensures the device can handle diverse anatomical configurations without requiring complete system replacement.
Solution Approach 2:
Rather than discarding the entire system when fixed wire crossing fails, the invention allows recovery and conversion of the existing components. The filter and sheath can be separated and reconfigured for wire of choice approach, preserving previously deployed components and avoiding complete system withdrawal and replacement.
Data Source
AI summary
An embolic protection device for removing emboli from a blood vessel in a patient's body. The device comprises a mesh element being expandable from a collapsed configuration to an expanded configuration and an elongate tubular element having a proximal opening, a distal opening, and a lumen between the proximal and distal openings. The lumen has a diameter large enough to slideably accommodate a standard guidewire. The mesh element is disposed on the elongate tubular element.