Dual-Grasping Medical Device for Stable Tissue Traction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing endoscopic procedures face challenges in applying traction or tension to lesions or body lumens to facilitate procedures like endoscopic submucosal dissection (ESD), as current methods lack effective tools for stabilizing and lifting the target tissue during removal.
Innovation Solution
A medical device with a shaft and two grasping devices, each with a pair of jaws, is used to apply traction to target tissue by anchoring one jaw to the tissue and another to the body lumen wall, facilitated by a handle that actuates both jaws, and optionally includes anchors and tethers to enhance stability and control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If a single grasping device is used to hold the lesion, then the device structure is simple, but stable traction and tissue lifting cannot be achieved
Solution Approach 1:
The device divides the grasping function into two separate grasping devices: a first grasping device for holding the lesion and a second grasping device for holding the body lumen wall. This segmentation allows each device to perform its specific function optimally while together they provide stable traction and tissue lifting capability
Solution Approach 2:
The patent combines two grasping devices with different functions (lesion grasping and wall grasping) into a single integrated medical device system with a common shaft and handle, allowing coordinated action to achieve stable traction while maintaining manageable device complexity
2Stability of the object's composition
If multiple grasping devices are added to provide stable traction, then traction stability is improved, but the device complexity increases
Solution Approach 1:
Both grasping devices are controlled through a single handle with actuators that can independently control each grasping device. This multi-functional control mechanism allows one handle to manage multiple grasping functions, reducing overall device complexity while maintaining traction stability
Solution Approach 2:
The second grasping device is positioned to extend radially outward from the shaft, and the two grasping devices work in a nested hierarchical manner where the first grasping device targets the lesion while the second grasping device targets the wall, creating a coordinated multi-level grasping system
Data Source
AI summary
A medical system may comprise a shaft, a first grasping device including a first pair of jaws, and a second grasping device coupled to the shaft, including a second pair of jaws.