Magnetic Tissue Shearing Using Thread Tension for Larger Openings
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Solution Overview
Problem
Current methods for creating lesions between adjacent body cavities, such as for treating diverticulum or performing anastomosis, face challenges with increasing complexity and trauma as the size of the lesion increases, particularly due to the need for large magnet assemblies and difficulty in assembling numerous components.
Innovation Solution
A device comprising a first and second magnetic member connected by a thread, where the thread is pulled to apply tension and cause pressure necrosis, allowing for tissue shearing and anastomosis with reduced complexity and trauma, using magnetic attraction to compress tissue and a mechanism to maintain thread tension, either through gravity or a traction system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a train of self-assembling magnets is used to create larger openings between body cavities, then the size of the opening increases, but the number of components increases and assembly difficulty increases proportionally
Solution Approach 1:
The device segments the magnetic components into only two separate magnets (first and second magnets) rather than using a train of multiple self-assembling magnets. These two magnets are positioned on opposite sides of the tissue wall and connected by a thread, allowing them to work together to create lesions of various sizes without requiring proportional increases in component数量
Solution Approach 2:
A thread is introduced as an intermediary element that connects the two magnets and applies tension to compress the tissue wall between them. The thread acts as a mediator that transmits force from the magnets to the tissue, enabling controlled compression and lesion creation without requiring the magnets to directly contact or self-assemble
2Reliability
If magnets are placed in each of two body cavities to create compression anastomosis, then tissue necrosis and anastomosis occur, but the complexity of delivering and positioning multiple magnets increases
Solution Approach 1:
The device merges the delivery mechanism into a single integrated system where both magnets are delivered through one catheter. The first magnet is delivered through the catheter into the first body cavity, and the second magnet is delivered through the same catheter into the second body cavity, simplifying the delivery process compared to separate delivery procedures
Solution Approach 2:
The magnets are pre-positioned on the catheter before delivery, with the first magnet positioned to be deployed into the first body cavity and the second magnet positioned to be deployed into the second body cavity. This preliminary positioning ensures correct placement and reduces the complexity of post-delivery positioning adjustments
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
Enables effective tissue shearing and anastomosis with reduced trauma and complexity, creating larger openings between body cavities without requiring large magnet assemblies, thereby improving the treatment of conditions like diverticulum and facilitating procedures like gastrojejunal anastomosis.
Implementation Method 1
The first and second members comprise materials which magnetically attract one another
Implementation Method 2
The means for pulling the thread is configured to apply a tension on the thread between the first member and the second member
Data Source
AI summary
A device for shearing tissue in a human or animal body may include a first member made of a first material and a second member made of a second material. A thread is connected to the first member and to the second member, and the first and second materials show magnetic attraction between one another. A means is provided for pulling the thread between the first and second members.