Helical Clip for Chordae Stabilization in Heart Valve Repair
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Solution Overview
Problem
Current medical systems for heart valve replacement and repair are complex, time-consuming, and lack efficient means for temporary valve placement and stabilization, often requiring significant time and resources during surgery, with existing solutions interfering with native valve structures and lacking cost-effectiveness.
Innovation Solution
A medical system utilizing a collapsible and expandable artificial valve with a collecting unit for chordae arrangement, allowing for fast and easy positioning and securing of the valve, facilitated by a steerable catheter and clip mechanism, enabling efficient temporary replacement and repair of native valves without interfering with annuloplasty devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a temporary artificial valve is used to replace a native valve during surgery, then surgical time is reduced and heart arrest time is minimized, but the device construction becomes complicated and requires additional components such as separation units and conduits
Solution Approach 1:
The patent combines the temporary valve with the chordae collection device into a single integrated unit. The valve is positioned at the native valve location and uses the same delivery catheter and positioning mechanisms as the chordae collection device, eliminating the need for separate separation units and reducing overall device complexity while maintaining short surgical time benefits
Solution Approach 2:
The temporary valve serves multiple functions: it provides immediate hemodynamic support by replacing the native valve, acts as a positioning reference for chordae collection, and can be used for both diagnosis and treatment in the same procedure. This multi-functionality reduces the need for additional specialized components
2Reliability
If more time is allocated for making decisions and preparations during surgery, then quality of valve replacement improves, but surgical time increases
Solution Approach 1:
The catheter-based delivery system allows the temporary valve to be prepared and positioned in advance during the same procedure as chordae collection. The valve can be delivered through the same catheter route, and its position can be adjusted before final deployment, providing time for decision-making and optimization without requiring separate surgical stages
Solution Approach 2:
The temporary valve is designed with flexible and adjustable components that can be modified during the procedure. The valve size, position, and orientation can be adjusted dynamically based on intraoperative findings, allowing surgeons to make optimal decisions while maintaining efficient surgical flow
3Adaptability or versatility
If the artificial valve is placed away from the native valve to avoid interference, then annuloplasty can be performed, but the artificial valve cannot utilize native valve structures for positioning and securing
Solution Approach 1:
The temporary valve is positioned within the native valve annulus rather than adjacent to it. The valve nestles into the native valve structure, using the annulus as a reference framework for positioning. This nested arrangement allows both the temporary valve and annuloplasty devices to coexist in the same spatial zone without interference
Solution Approach 2:
The catheter delivery system acts as an intermediary that precisely positions the temporary valve at the native valve location. The catheter provides a guided pathway through the heart chambers, allowing accurate placement of the valve at the annulus without requiring direct manipulation of the native valve structures, thus facilitating both positioning and subsequent annuloplasty
Data Source
Figure 1A~1B
Figure 2
Figure 3A~3B
AI summary
A medical system is disclosed for replacement and/or repair of a native heart valve, comprising an artificial valve, a catheter, a device for collecting and arranging chordae and/or leaflets to hold and/or stabilize an artificial valve in a desired position, the device comprising a clip (902) being deployable from the catheter to surround the artificial valve and to lock the chordae in position towards the artificial valve, and wherein the clip is shaped as a helix.