Mitral Valve Clip Control for Precise Leaflet Capture
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Solution Overview
Problem
Conventional mitral clip procedures often result in complications due to improper placement and sub-optimal implantation, leading to unsatisfactory regurgitation reduction and long-term failure, necessitating improved control and reliability during implantation.
Innovation Solution
A valve repair device with a tubular body and paddles and retention members, featuring a paddle control mechanism and retention member control mechanism, allowing for precise adjustment of paddle and retention member abduction relative to the longitudinal axis, facilitating secure attachment to valve leaflets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional mitral clips are used for valve repair, then the procedure can be performed, but improper placement and sub-optimal implantation lead to unsatisfactory regurgitation reduction and long-term failure
Solution Approach 1:
The valve repair device incorporates adjustable paddles and retention members that can be dynamically repositioned relative to the tubular body. The paddles can be rotated to different orientations and the retention members can be moved along the tubular body, allowing the device to adapt to varying valve anatomies and achieve optimal leaflet capture and regurgitation reduction
Solution Approach 2:
The device is divided into distinct functional segments including the tubular body, independently controllable paddles, and retention members. This segmentation allows each component to be optimized and adjusted independently, with paddles positioned to capture leaflet tissue and retention members secured to maintain the repair, thereby improving placement precision and implantation reliability
2Ease of operation
If conventional mitral clips are used for valve repair, then the procedure can be performed, but complications arise due to improper or sub-optimal placement and implantation
Solution Approach 1:
The device allows dynamic adjustment of paddle orientation and retention member position during implantation. The paddles can be rotated to optimal angles for leaflet capture, and retention members can be repositioned along the tubular body to ensure secure attachment, thereby improving ease of operation and reducing implantation complications
Solution Approach 2:
The device enables changes in geometric parameters such as paddle angle, retention member position, and overall device orientation during implantation. These parameter adjustments allow the operator to optimize the device configuration for each patient's specific anatomy, improving both ease of operation and implantation reliability while reducing complications
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
Enhances the control and reliability of mitral clip implantation, improving regurgitation reduction and long-term outcomes by ensuring accurate and stable attachment to the mitral valve leaflets.
Implementation Method 1
The paddle shaft is threadedly engaged to the paddle collar and coupled to the paddle. The paddle collar is rotatable to translate the paddle shaft to change abduction of the paddle relative to the longitudinal axis.
Implementation Method 2
The retention member shaft is threadedly engaged to the retention member collar and coupled to the retention member. The retention member collar is rotatable to translate the retention member shaft to change abduction of the retention member relative to the longitudinal axis.
Data Source
AI summary
A valve repair device, e.g., for treating mitral valve regurgitation, includes a tubular body defining a longitudinal axis, paddles supported by the tubular body and movable to change abduction of the paddles relative to the longitudinal axis, and retention members supported by the tubular body proximal the paddles and similarly movable to change abduction of the retention members relative to the longitudinal axis to facilitate capture of native valve leaflets between pairs of paddles and retention members. Movement of the paddles and/or retention members is provided by one or more control mechanisms including a collar a shaft extending within the tubular body. Each shaft is threadedly engaged to a respective collar and coupled to one or more of the movable elements such that, when the collar is rotated, the shaft translates to change abduction of the movable element relative to the longitudinal axis.