Native Mitral Valve Repair Paddles for Adjustable Leaflet Coaptation
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Solution Overview
Problem
Existing techniques for treating mitral valve regurgitation, such as surgical stitching and catheter-delivered clips, are inadequate as they either require significant overlap between leaflets or result in restricted blood flow and stress on patient leaflets, necessitating improved devices and methods for effective mitral valve repair.
Innovation Solution
A valve repair device with a pair of paddles and gripping members that secure to the native valve, allowing for tensioning force application and adjustable positioning to enhance leaflet coaptation, thereby preventing regurgitation without causing undue stress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If surgical stitching or catheter-delivered clips are used to treat mitral valve regurgitation, then the valve can be repaired, but significant overlap between leaflets is required or blood flow is restricted and stress is placed on patient leaflets
Solution Approach 1:
The device divides the repair function into separate components: a first gripping member engages one leaflet, a second gripping member engages the other leaflet, and these members can be independently positioned and tensioned. This segmentation allows precise control over each leaflet without requiring excessive overlap or creating concentrated stress points, thereby resolving the contradiction between repair reliability and harm reduction.
2Reliability
If existing repair techniques are used, then valve regurgitation can be addressed, but the procedures are highly invasive or require significant leaflet overlap
Solution Approach 1:
The device incorporates movable and adjustable components including sliding mechanisms that allow the gripping members to be dynamically repositioned along the catheter shaft. This dynamic capability enables the operator to achieve optimal leaflet engagement and tensioning without requiring highly invasive access or complex manual manipulation, thus resolving the contradiction between repair reliability and ease of operation.
Data Source
AI summary
A valve repair device includes a first paddle, a second paddle, a spacer, a first gripping member, and a second gripping member. The first paddle and the second paddle are configured to move between a closed position and an open position. The spacer is disposed between the first paddle and the second paddle. The first gripping member is disposed between the first paddle and the spacer. The second gripping member is disposed between the second paddle and the spacer. The first paddle and the first gripping member are configured to capture a first native valve leaflet. The second paddle and the second gripping member are configured to capture a second native valve leaflet.