Tissue Clamping Device with Guide Slot Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing mitral valve clamp devices are limited by restricted length and turning angle, making it difficult to capture valve leaflets effectively due to narrow channels and limited capturing distance.
Innovation Solution
A fixing device with a support mechanism and drive assembly featuring guide slots with nonlinear segments, allowing for a larger opening angle and longer capturing distance, along with capture members and closure members that can move relative to each other to securely clamp tissue, enhancing the clamping mechanism's ability to grasp valve leaflets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If existing clamps are designed to pass through narrow channels and make turns, then the device can be delivered minimally invasively, but the capturing distance is limited and the turning angle is restricted
Solution Approach 1:
The closure members are designed with dynamic characteristics, allowing them to rotate and extend beyond the initial plane of the clamp body. The closure members can pivot at connection points and extend outward to increase capturing distance, then return to a compact position for delivery through narrow channels.
Solution Approach 2:
The closure members transition from a two-dimensional planar configuration during delivery to a three-dimensional extended configuration during operation. By allowing the closure members to rotate out of the initial plane and extend in multiple directions, the device achieves greater capturing distance while maintaining a compact delivery profile.
2Adaptability or versatility
If existing clamps use simple connecting rod mechanisms, then the device structure remains simple, but the turning angle of the clamp is limited
Solution Approach 1:
The closure members incorporate dynamic rotation capabilities with pivot points that allow multi-angle adjustment. The driving mechanism includes rotatable connection rods and articulation joints that enable the closure members to achieve larger turning angles while maintaining structural integrity and controllability.
Solution Approach 2:
The connecting mechanism is divided into multiple articulated segments including pivot points, rotation joints, and modular connection rods. This segmentation allows each component to contribute to the overall turning angle while keeping individual component complexity manageable, enabling cumulative angular movement through the articulated chain.
Data Source
AI summary
A fixing device for clamping a tissue comprises a support mechanism comprising a fixed connecting assembly and a drive assembly, and a clamp mechanism comprising closure members and capture portions, wherein each closure member comprises a closure connecting portion and a closure clamping portion in cooperation with one of the capture portions to clamp the tissue; wherein each closure connecting portion is provided with guide slots comprising a first slot portion and a second slot portion in communication therewith and has a relatively smaller radian, the fixed connecting assembly is provided with pins at least partially located in the guide slots, respectively, and the pins are slidable relative to the guide slots when the drive assembly moves relative to the fixed connecting assembly, so as to drive the closure clamping portions to move towards or away from each other. A system comprising the fixing device, and a method are provided.