Heart Valve Delivery Catheter With Nested Embolic Protection
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Solution Overview
Problem
Existing embolic protection systems require separate procedural steps and additional access sites, increasing the risk of embolism during transcatheter heart valve replacement and other intravascular procedures, and often increase the catheter diameter, complicating the procedure.
Innovation Solution
Integration of an embolic filter within a transcatheter heart valve delivery system, allowing for continuous protection during critical procedural steps without additional access sites and maintaining a similar catheter diameter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate embolic protection system is used, then embolic protection is provided, but the procedural complexity increases and additional access sites are required
Solution Approach 1:
The embolic protection filter is integrated directly into the catheter structure, combining two separate functions (embolic protection and catheter-based procedure) into a single device. This eliminates the need for separate embolic protection systems and reduces procedural complexity while maintaining reliable embolic protection during the procedure
2Reliability
If a separate embolic protection system is used, then embolic protection is provided, but additional access sites are required
Solution Approach 1:
The embolic protection filter is integrated into the existing catheter access pathway, allowing the same access site to serve both the catheter-based procedure and embolic protection functions. This eliminates the need for additional access sites while ensuring continuous embolic protection
3Reliability
If an embolic filter is added to the catheter, then embolic protection is provided, but the catheter diameter increases
Solution Approach 1:
The embolic protection filter is designed to nest within the catheter structure when not in use, and deploy when needed. This integration approach allows the filter to be part of the catheter system without significantly increasing the overall catheter diameter, maintaining compatibility with existing delivery systems
4Reliability
If embolic protection is deployed during critical procedural steps, then cerebral embolism risk is reduced, but the procedure requires additional steps
Solution Approach 1:
The embolic protection filter is pre-integrated into the catheter system and automatically positioned during the procedure. This preliminary integration allows embolic protection to be in place during critical steps without requiring separate deployment actions, thereby reducing the overall procedural time while maintaining cerebral embolism prevention
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
Provides continuous embolic protection during transcatheter heart valve replacement by integrating the embolic filter into the catheter, reducing procedural complexity and maintaining catheter size, thereby minimizing the risk of cerebral embolism and other complications.
Implementation Method 1
an embolic filter disposed on the distal portion of the shaft at a location proximal of the prosthetic valve
Data Source
AI summary
A prosthetic heart valve delivery catheter includes an embolic filter to provide integrated embolic protection to inhibit the release of emboli into the aorta, the aortic arch or branch vessels, and other vasculature during transvascular heart valve replacement procedures. The embolic filter will usually be fixedly or movably attached to a shaft of the delivery catheter proximal of the prosthetic heart valve.