Intra-cardiac Myocardial Resection Device with Echocardiography Guidance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current treatments for hypertrophic obstructive cardiomyopathy, such as drug therapy, dual-chamber pacing, and alcohol ablation, have limitations including incomplete symptom relief, high complication rates, and the need for open heart surgery, which is invasive and dependent on surgeon experience.
Innovation Solution
An intra-cardiac myocardial resection device with a bullet-shaped outer-layer protective sleeve and an inner-layer scalpel sleeve, featuring a resection window with a hook for anchoring myocardial tissue, an annular sealing ring for blood prevention, and a hollow operation handle for real-time echocardiography guidance, allowing for minimally invasive resection and reduced surgical trauma.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional open ventricular septal myocardial resection is performed, then complete resection of hypertrophic myocardium can be achieved, but surgical trauma, myocardial injury and systemic inflammatory response are caused
Solution Approach 1:
The invention divides the resection procedure into two distinct phases: a puncture stage using a puncture needle to create an initial opening, and a resection stage using a resection blade to remove the hypertrophic myocardium. This segmentation allows for minimal initial trauma while enabling complete resection through the staged approach
Solution Approach 2:
The invention replaces the traditional mechanical open-chest resection system with a catheter-based intracardiac resection system that uses echocardiographic imaging guidance and controlled mechanical resection through small puncture sites, significantly reducing surgical trauma while maintaining resection effectiveness
2Ease of operation
If resection is performed in a heart arrested state, then resection extent can be controlled, but the thickness and texture of the heart differ from beating state making pre-surgical evaluation difficult
Solution Approach 1:
The invention enables resection to be performed on a beating heart by using echocardiographic imaging to dynamically track and guide the resection blade through the moving myocardium, allowing real-time adaptation to the heart's dynamic state while maintaining precise control
Solution Approach 2:
The invention uses echocardiographic imaging to provide real-time feedback on the position of the resection blade relative to the hypertrophic myocardium, allowing continuous adjustment of the resection depth and extent based on actual tissue characteristics observed during the procedure
3Device complexity
If resection extent cannot be evaluated in real time, then surgical simplicity is maintained, but ventricular septal rupture and conductive fasciculus injury may occur
Solution Approach 1:
The invention replaces subjective surgical judgment with objective echocardiographic measurement and visualization, using imaging technology to provide real-time feedback on resection depth and extent, thereby preventing over-resection and associated complications
Solution Approach 2:
The invention introduces echocardiographic imaging as an intermediary between the surgeon and the resection process, providing real-time visualization of the resection blade's position and the hypertrophic myocardium's boundaries to guide safe and effective resection
4Reliability
If alcohol ablation is used, then etiological treatment of reducing hypertrophic obstruction can be achieved, but myocardial infarction in non-target areas may be caused
Solution Approach 1:
The invention segments the treatment approach by first using puncture needle anchoring to precisely define the target resection zone, then using echocardiographic guidance to confine the resection blade's cutting action to only the hypertrophic myocardium, preventing damage to non-target areas
Solution Approach 2:
The invention uses echocardiographic imaging as an intermediary to provide real-time visualization and control of the resection process, allowing precise differentiation between hypertrophic and normal myocardium to avoid infarction in non-target areas
Data Source
AI summary
An intra-cardiac myocardial resection device comprises an outer-layer protective sleeve and an inner-layer scalpel sleeve. An upper sidewall of the outer-layer protective sleeve is provided with a resection window, and an upper edge of the resection window is provided with a downward hook; and a sidewall of the outer-layer protective sleeve is provided with an axial sliding groove. The inner-layer scalpel sleeve is mounted in the outer-layer protective sleeve, and an upper end of the inner-layer scalpel sleeve is provided with an annular blade having an upward edge. A sidewall of the inner-layer scalpel sleeve is provided with a hollow operation handle, and the hollow operation handle extends out of the sliding groove. During a surgery, performed by using the intra-cardiac myocardial resection device, a resection extent and a resection effect can be monitored, and the surgical treatment effect for such patients is improved.