Endoscopic Snare Net Retrieval Device for Esophageal Obstruction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current endoscopic snare nets face challenges in safely and efficiently removing tightly lodged foreign bodies from the esophagus and internal cavities, as they often require blind and forceful insertion, increasing the risk of perforation and complicating the retrieval of polyps, which can lead to increased trauma, expense, and hospitalization time.
Innovation Solution
An endoscopic snare net retrieval device with a snare loop, mesh, and control wire system that allows the snare loop to be fully retrieved into a tube, then expanded perpendicularly to capture objects, utilizing a drive member to adjust the loop's diameter and orientation for effective capture and removal without forcing the device past lodged objects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a snare net is blindly slid alongside a tightly lodged food bolus to remove it, then the foreign body can be removed, but the risk of esophageal perforation significantly increases
Solution Approach 1:
The device performs preliminary actions by first deploying the net perpendicular to the esophageal axis to engage the foreign body, then gradually translating it parallel to the axis. This staged approach allows the net to safely navigate past the lodged bolus without requiring blind forceful insertion, thereby removing the foreign body while minimizing perforation risk.
2Productivity
If a snare net is used to capture and retrieve a severed polyp, then the polyp can be removed, but the effort and time expended may rival or exceed the effort and time required to locate and sever the polyp
Solution Approach 1:
The device is pre-configured with the net attached to the control wire within the tube, ready for immediate deployment. After polyp resection, the net can be quickly deployed perpendicular to capture the polyp, then efficiently retrieved through the same access channel, eliminating the need for separate retrieval instruments and reducing overall procedure time.
Solution Approach 2:
The single device integrates multiple functions: it can deploy the net perpendicular to capture foreign bodies or polyps, translate parallel to retrieve them, and withdraw through the endoscope channel. This multi-functionality consolidates what would otherwise require multiple separate instruments into one unified system, improving efficiency and reducing procedure time.
3Reliability
If complex mechanisms or excessive netting material are used in snare nets to improve capture capability, then polyp or foreign object capture is enhanced, but the device may snag or require a larger diameter lumen to pass through
Solution Approach 1:
The device segments the net deployment function from the retrieval function by using a control wire that runs through a tube. The net is attached to the control wire and can be deployed perpendicular to capture objects, then the entire assembly is translated parallel to retrieve. This segmentation allows simple individual components to work together effectively without requiring complex integrated mechanisms.
Data Source
AI summary
The invention is directed towards an endoscopic snare net retrieval device with a perpendicular-deploying snare loop and a mesh for efficiently capturing and extracting esophageal obstructions or tissue growths, significantly reducing the risk of perforation and procedure time.