Valve Leaflet Repair System with Spring-Driven Linkage Release
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Solution Overview
Problem
Minimally invasive valve leaflet repair surgeries are complex and difficult to perform, especially on a beating heart, due to the challenges of accurately repairing valve function with existing technologies.
Innovation Solution
A system comprising a delivery device with an operating handle, positioning tube, outer tube clamp, delivery needle, and pushing tube, along with a restoration component featuring an anchor and connection wire, enables precise linkage release and repair operations, facilitated by a spring mechanism and safety button to prevent misoperations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional valve leaflet repair surgery is performed, then accurate repair of valve function can be achieved, but the surgery becomes complex and difficult to perform
Solution Approach 1:
The patent combines multiple surgical functions (puncture, anchor deployment, chordae tendineae attachment, and valve repair) into a single integrated delivery device. The delivery device includes a needle for puncture, a pushing tube for anchor deployment, and a connection wire for chordae tendineae attachment, all integrated into one system that can be inserted through a single access point, thereby reducing surgical complexity while maintaining repair accuracy
Solution Approach 2:
The delivery device employs a nested structure where the anchor is positioned within the pushing tube, which is in turn positioned within the delivery needle. This nested configuration allows multiple components to be delivered through a single catheter-like structure, simplifying the surgical procedure while enabling precise placement of each component at the target valve site
2Object-affected harmful factors
If minimally invasive techniques are used for valve repair, then patient pain is reduced, but operation difficulty increases
Solution Approach 1:
The delivery device incorporates a spring mechanism that automatically propels the anchor forward when the pushing tube is retracted. This self-service feature eliminates the need for complex manual manipulation of the anchor during deployment, reducing operation difficulty while maintaining the minimally invasive approach that limits patient trauma
3Manufacturing precision
If complex multi-step implantation procedures are performed, then precise valve repair can be achieved, but surgery intensity and difficulty for the surgeon increase
Solution Approach 1:
The anchor is pre-loaded into the pushing tube, and the entire assembly is pre-positioned within the delivery needle before insertion. This preliminary preparation ensures that all components are correctly positioned and oriented before reaching the target site, enabling precise valve repair while reducing the intensity of intraoperative manipulation required by the surgeon
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 allows for easy, one-step operation on a beating heart, reducing surgical difficulty and patient pain while ensuring accurate valve leaflet repair, enhancing the success rate of minimally invasive surgery.
Implementation Method 1
the pull rod and the push member are cooperatively driven by means of a spring
Data Source
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AI summary
The present disclosure relates to the technical field of medical instruments. Disclosed is a system for repairing valve leaflets in minimally invasive surgery, including a delivery device and a restoration component. The delivery device can perform a linkage release operation; the delivery device comprises an operating handle, a positioning tube, an outer tube clamp, an outer delivery tube, a delivery needle and a pushing tube; and the operating handle comprises a pull rod, a push member, a handle, a release button, a sliding member and a safety button. The system for repairing valve leaflets of the present disclosure is suitable for repairment of the valve leaflet in minimally invasive surgery, which is easy to operate and can realize release and repair operations by one step, and at the same time can reduce operation difficulty, intensity and patient pain in the surgery, improving the successful rate of the surgery.