Mitral Valve Repair via Papillary Muscle Relocation
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Solution Overview
Problem
Current medical devices are inadequate in effectively treating mitral regurgitation by relocating papillary muscles, as they often fail to properly address the displacement and tension issues that lead to leaflet tethering and insufficient coaptation of the mitral valve leaflets.
Innovation Solution
A mitral regurgitation treatment system comprising an annuloplasty device, a tethering element with anchors securing it to papillary muscles, and a linking element with a spring element to maintain tension, which is used to reposition the papillary muscles and reduce leaflet tethering by connecting the annuloplasty device to the tethering element, thereby improving coaptation of the mitral valve leaflets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional medical devices are used to treat mitral regurgitation, then the treatment procedure is simple, but the effectiveness in relocating papillary muscles and reducing leaflet tethering is insufficient
Solution Approach 1:
The treatment system is divided into distinct functional components: an annuloplasty device for mitral valve repair, a tethering element with anchors for papillary muscle attachment, and a linking element with spring for tension control. This segmentation allows each component to perform its specific function effectively while maintaining overall system manageability.
Solution Approach 2:
The linking element acts as an intermediary between the annuloplasty device and the tethering element, incorporating a spring mechanism that mediates the tension transmission and enables controlled relocation of the papillary muscles while maintaining appropriate force levels.
2Reliability
If papillary muscles are relocated to treat mitral regurgitation, then coaptation of mitral valve leaflets is improved, but tension on the chordae increases causing leaflet tethering
Solution Approach 1:
The spring element in the linking element dynamically adjusts the tension parameter, maintaining optimal force levels during papillary muscle relocation while preventing excessive tension that would cause leaflet tethering. This allows controlled change in the mechanical parameters of the chordae.
3Reliability
If a tethering element is used to secure papillary muscles, then relocation is achieved, but the device complexity increases
Solution Approach 1:
The tethering element combines multiple functions into a single component: it includes anchors for securing to the ventricular wall and papillary muscles, and integrates with the linking element to provide both attachment and tension control mechanisms, thereby reducing the total number of separate components needed.
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
The system effectively reduces tension on the chordae and improves coaptation of the mitral valve leaflets by repositioning the papillary muscles, thereby alleviating mitral regurgitation through minimally invasive intravascular techniques or open-heart surgery.
Implementation Method 1
The linking element includes a spring element disposed between the annuloplasty device and the tethering element. The spring element maintains the linking element in tension between the annuloplasty device and the tethering element.
Data Source
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AI summary
A mitral regurgitation treatment system may include an annuloplasty device configured for placement on an atrial side of a mitral valve, a tethering element configured to extend between a first papillary muscle and a second papillary muscle, wherein the tethering element includes a first anchor securing the tethering element to the first papillary muscle and a second anchor securing the tethering element to the second papillary muscle, and a linking element extending from the annuloplasty device to the tethering element. The linking element may include a spring element disposed between the annuloplasty device and the tethering element.