Mitral Valve Instrument with Movement Sensor for Anchor Positioning
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Solution Overview
Problem
Current percutaneous mitral valve repair techniques face challenges in precisely positioning instruments with respect to moving tissue, particularly the mitral valve annulus, which limits the effectiveness of annuloplasty procedures and results in incomplete regurgitation correction and potential annulus dilation.
Innovation Solution
A novel instrument equipped with a movement sensor and effective portion positioner allows for precise positioning of anchors along the entire perimeter of the mitral valve annulus, using in-situ information for spatial resolution and precision, enabling sequential installation of interrelated anchors to stop regurgitation without annulus redilation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If percutaneous mitral valve repair techniques are used, then the trauma and risks associated with conventional surgery are reduced, but the precision in positioning instruments with respect to moving tissue deteriorates
Solution Approach 1:
The patent employs movement sensors that detect the position and movement of the mitral valve annulus in real-time, providing feedback to a control system. This feedback loop enables the instrument to automatically adjust its positioning and maintain precise alignment with the moving annulus throughout the cardiac cycle, resolving the positioning precision issue while preserving the percutaneous approach benefits
Solution Approach 2:
The patent replaces manual mechanical positioning with an automated control system that uses sensors to detect annulus movement and actuators to adjust instrument position. This substitution of mechanical manual adjustment with sensor-driven automated control enables precise positioning without requiring open-heart surgery or general anesthesia
2Reliability
If anchors are implanted along the entire perimeter of the mitral valve annulus, then regurgitation correction is improved, but the device complexity increases
Solution Approach 1:
The patent divides the annuloplasty procedure into multiple discrete anchor implantation steps around the annulus perimeter. The instrument can sequentially deploy individual anchors at predetermined locations, with each anchor providing a discrete function. This segmentation allows comprehensive perimeter coverage for reliable regurgitation correction while maintaining modular simplicity in each individual anchor and instrumentation component
Solution Approach 2:
The patent designs a universal instrument platform that can perform multiple functions: sensing annulus movement, positioning the instrument tip, deploying anchors, and adjusting tension. This multi-functional integrated approach reduces overall system complexity compared to using separate specialized devices for each function, while enabling comprehensive anchor implantation along the entire annulus perimeter
Data Source
AI summary
An instrument defining instruments proximal and distal ends and positionable with respect to a body valve in the body of a living subject for implanting anchors into living tissue at a predetermined location relative to the body valve. The instrument includes a body. A movement sensor and an effective portion including an anchor implanting mechanism are mounted to the instrument body in the instrument distal end section in a predetermined positional relationship relative to each other. The effective portion positioner is mounted to the instrument body in the instrument proximal end section.