Percutaneous Catheter for Mitral Valve Triangular Resection
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Solution Overview
Problem
Current methods for treating mitral valve regurgitation, particularly in cases of mitral prolapse, often require invasive surgical techniques with high operative mortality and long-term risks, especially in patients with impaired left ventricular function and pulmonary hypertension, and existing percutaneous systems cannot perform triangular resections effectively.
Innovation Solution
A percutaneous medical device employing a single catheter for triangular plication and resection of prolapsed mitral valve leaflets using a grasping tweezer and plicating tweezer within a catheter, allowing for minimally invasive treatment of both posterior and anterior leaflets, and potentially applicable to other valve types, with options for fixation via staples, stitches, or thermal treatments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If surgical repair or replacement of the mitral valve is performed, then effective treatment of mitral regurgitation is achieved, but operative mortality and surgical risk increase significantly
Solution Approach 1:
The patent replaces traditional open surgical mechanical systems with a percutaneous catheter-based system. The catheter delivers specialized tools (grasping tweezer, plicating tweezer, resection tools) through vascular access to perform mitral valve repair without sternotomy, thereby eliminating the high mortality risk associated with open heart surgery while maintaining effective treatment of mitral regurgitation
Solution Approach 2:
The patent introduces a percutaneous catheter as an intermediary device to deliver repair tools to the mitral valve. This intermediary approach allows indirect access to the heart valve through peripheral vascular access, avoiding direct surgical exposure and reducing the harmful effects of sternotomy and cardiopulmonary bypass
2Ease of operation
If existing percutaneous tissue repair systems are used, then minimally invasive access is achieved, but triangular resection cannot be performed
Solution Approach 1:
The patent creates a multi-functional percutaneous catheter system that can perform multiple repair techniques including plication, resection, and tissue grasping. The catheter is designed to accommodate various tools (grasping tweezer, plicating tweezer, resection tools) that can be deployed sequentially or selectively based on the specific repair needs, making the system versatile enough to perform triangular resection while maintaining minimally invasive access
3Ease of operation
If traditional surgical techniques are used, then complete control of tissue repair is achieved, but invasive procedures with high mortality are required
Solution Approach 1:
The patent employs dynamic, remotely controllable tools within the catheter system. The grasping tweezer and plicating tweezer can be actuated remotely through the catheter to dynamically adjust tissue grasping, plication, and resection in real-time during the procedure, providing complete control over tissue repair while maintaining percutaneous access and avoiding high-mortality open surgery
Data Source
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AI summary
Medical device for transcatheter heart valve repair comprising a grasping tweezer (1) and a plicating tweezer (2), said grasping tweezer (1) being adapted to grasp a leaflet rim (3) and said plicating tweezer (2) comprising two rotatable flaps (4,5) and a central shaft (6) around which said flaps (4,5) may rotate in a "butterfly manner", in such a way that the plicating tweezer (2) may adopt a closed or an open configuration. The invention also relates to a method for using this medical device.