Elastic Traction Ring for Endoscopic Submucosal Dissection
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Solution Overview
Problem
Current endoscopic submucosal dissection (ESD) techniques face challenges such as long operation times, high risks of bleeding and perforation, and limited surgical field exposure, especially when dealing with large or irregularly shaped lesions, due to the need for repeated submucosal injections and anatomical position constraints.
Innovation Solution
A traction apparatus with an elastic traction portion and clip mechanism that uses the elastic force to stretch and expose the surgical field without external force, allowing for intuitive and safer dissection of large-area lesions, independent of anatomical position and alimentary canal size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional ESD technique is used with repeated submucosal injections, then complete resection of large lesions can be achieved, but operation time is prolonged and risk of bleeding and perforation increases
Solution Approach 1:
The patent extracts the traction function from the injection system by introducing a separate traction apparatus that uses elastic recoil instead of fluid injection to create lifting effect, thereby eliminating the need for repeated submucosal injections and their associated risks
Solution Approach 2:
The traction portion utilizes the elastic force of the organ wall itself to provide traction, rather than requiring external injection forces. The elastic material stores and releases energy naturally, making the system self-sufficient and reducing intervention frequency
2Area of stationary object
If conventional ESD technique is used, then large lesions can be resected, but surgical field exposure is limited due to anatomical position constraints
Solution Approach 1:
The patent changes the physical parameter of traction force delivery by using elastic materials with different recoil characteristics, allowing adaptation to various anatomical positions and lesion locations without being constrained by gravity-dependent injection techniques
Solution Approach 2:
The traction apparatus is designed to be universally applicable across different anatomical locations and organ types, providing consistent surgical field exposure regardless of patient position or lesion location, thereby enhancing versatility
3Ease of operation
If traction apparatus with elastic portion is used, then surgical field exposure is improved and operation is simplified, but device complexity increases
Solution Approach 1:
The traction apparatus is segmented into distinct functional components: a clip portion for attachment and a traction portion with elastic material for force generation. This segmentation allows each component to be optimized independently while maintaining overall simplicity
Solution Approach 2:
The elastic material acts as an intermediary between the clip portion and the tissue, converting mechanical attachment into sustained traction force through elastic recoil, thereby simplifying the operation while managing the complexity through a clear functional interface
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 traction apparatus reduces operation time, minimizes risks, and facilitates easier closure of wound surfaces by providing consistent traction force, improving the visibility and safety of the surgical field, especially in difficult-to-reach areas.
Implementation Method 1
the closed traction structure is made of an elastic material; Based on own elastic force, the traction portion has elastic deformation to provide traction force within the body to stretch a nidus
Data Source
AI summary
A traction apparatus, comprising a clip portion (2) and a traction portion (1), the traction portion containing a closed traction structure (11); the closed traction structure being made from an elastic material; the clip portion comprising a main clip body (23, 25) and a clip arm (24, 26); the main clip body being capable of passing through a biopsy channel (4) of an endoscope (3), the clip arm being capable of clip the closed traction structure. Also disclosed is a traction ring used for the traction apparatus, the traction ring being a single closed traction structure or being formed by connecting several closed traction structures, the traction ring being made from an elastic material.