Valve Compression Assembly for Even Force and Suture Protection
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Solution Overview
Problem
Existing valve compression methods in transcatheter valve intervention face challenges such as strong radial supporting force leading to resistance and uneven force distribution, which can cause damage or fracture to sutures between the artificial valve and the valve frame.
Innovation Solution
A valve compression apparatus is designed with a compression shell, communication tube, funnel tube, compression arc plate, and a pressing assembly that includes a traction plate with a slope, elastic support assembly, and a moving ring. This apparatus allows for controlled compression of the valve by simultaneously squeezing multiple compression arc plates, reducing the risk of damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the valve frame with strong radial supporting force is compressed using a taper inner diameter compression lumen, then the valve can be compressed to fit into the catheter, but great resistance is encountered and uneven force is applied causing damage to sutures
Solution Approach 1:
The compression apparatus divides the compression function into multiple independent compression members (first compression member, second compression member, third compression member) that can act simultaneously on different parts of the valve. This segmentation allows distributed compression force to be applied evenly across the valve structure, avoiding concentration of force on any single point that would damage sutures.
Solution Approach 2:
Each compression member is designed with specific local characteristics - the first compression member has a first compressing surface, the second has a second compressing surface, and the third has a third compressing surface. These localized compression surfaces are positioned to target specific regions of the valve, applying appropriate compression force to each area while maintaining overall suture integrity.
2Productivity
If the tube diameter is continuously reduced to compress the valve, then the valve can be introduced into the catheter, but the compression process is slow and requires continuous manual operation
Solution Approach 1:
The apparatus merges the functions of multiple compression members into a single integrated compression apparatus that operates simultaneously. The first, second, and third compression members are positioned to compress the valve at multiple points at the same time, dramatically increasing compression speed compared to sequential compression methods while maintaining manageable device complexity through coordinated operation.
Solution Approach 2:
The compression members are designed to be movable and adjustable - the first compression member can move along the first direction, the second along the second direction, and the third along the third direction. This dynamic capability allows the apparatus to adapt to different valve sizes and shapes while maintaining rapid compression through coordinated movement of all members.
3Manufacturing precision
If manual compression is used without a specialized apparatus, then the device complexity is low, but the compression force is uneven and damage occurs to the valve and sutures
Solution Approach 1:
The compression apparatus is designed with multi-functional capabilities - it can compress various types of valves (first valve, second valve, third valve) with different structures and sizes. The apparatus includes multiple compression members that can be configured to handle different valve geometries, making it a universal solution that provides precise, uniform compression across various valve types without requiring multiple specialized devices.
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 apparatus effectively compresses the valve without causing damage, ensuring stability and efficiency in the valve compression process while minimizing the risk of suture fracture and reducing costs.
Implementation Method 1
one end of the elastic support assembly is connected to an inner side of the traction plate, and the other end is installed on a peripheral surface of the communication tube or the funnel tube
Data Source
AI summary
The present invention discloses a valve compression apparatus, belongs to the technical field of medical apparatus and instruments, and includes a compression shell, a communication tube, a funnel tube, a compression arc plate, and a pressing assembly; the communication tube is smoothly connected to a small-diameter end of the funnel tube; two opposite sides of the compression shell are provided with placement ports respectively, one placement port is communicated with the communication tube, and the other placement port is communicated with the funnel tube; a plurality of operation ports are arranged in a circumferential direction of the funnel tube; the pressing assembly includes a traction plate with a slope, an elastic support assembly, and a moving ring; when the moving ring moves in a direction from the communication tube to the funnel tube, the moving ring simultaneously squeezes a plurality of traction plates, to drive the traction plates to move towards the funnel tube; the compression arc plate is in a one-to-one correspondence with the operation port, and is connected to the traction plate through a connecting rod; when the traction plate moves towards the funnel tube, the compression arc plate passes through the operation port and moves towards an axis of the funnel tube, to quickly compress a valve and avoid damage in the valve compression process.