Continuous Flow Irrigation Endoscope Elliptical Outflow Port
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Solution Overview
Problem
Existing continuous flow irrigation endoscopic systems face challenges in efficiently evacuating detached tissue pieces without collapsing the tissue cavity, as they require intermittent removal of the endoscope, which increases the risk of complications like perforation and bleeding, and altering the outflow port diameter to accommodate waste fluid evacuation can lead to tissue cavity collapse.
Innovation Solution
A continuous flow irrigation system with an endoscope and fluid management system that uses an outflow port with a lumen diameter equal to or greater than the inner sheath, and incorporates an elliptical outflow port and tube to enhance evacuation efficiency, allowing for simultaneous automatic removal of detached tissue pieces and waste fluid without withdrawing the endoscope, while maintaining stable cavity pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the outflow port lumen diameter is increased to evacuate detached tissue pieces, then evacuation efficiency is improved, but the tissue cavity collapses due to loss of positive fluid pressure
Solution Approach 1:
The system separates the outflow port function into two distinct pathways: an inner lumen for waste fluid evacuation and an outer annular space for detached tissue piece evacuation. This segmentation allows each pathway to be optimized for its specific function - the inner lumen maintains sufficient diameter for fluid flow while the outer annular space provides additional capacity for tissue evacuation without compromising cavity pressure
Solution Approach 2:
The invention transitions from a single-dimensional (circular) outflow port to a two-dimensional concentric annular configuration. The outflow port comprises an inner circular lumen surrounded by an outer annular space, creating a ring-shaped flow path that increases the effective evacuation area while maintaining the structural integrity needed for cavity distension
2Productivity
If the endoscope is intermittently removed to evacuate large tissue pieces, then evacuation capability is improved, but surgical time increases and risk of complications rises
Solution Approach 1:
The system enables continuous evacuation of both waste fluid and detached tissue pieces through the outflow port without interrupting the surgical procedure. The concentric annular configuration allows simultaneous passage of fluid through the inner lumen and tissue pieces through the outer annular space, eliminating the need for intermittent endoscope removal and maintaining continuous surgical workflow
Solution Approach 2:
The outflow port is designed to perform multiple functions simultaneously: evacuating waste fluid through the inner lumen and evacuating detached tissue pieces through the outer annular space. This multi-functional design eliminates the need for separate evacuation mechanisms or procedural interruptions, allowing a single outflow port to handle both liquid and solid waste products
3Stress or pressure
If the outflow port lumen diameter is kept small to maintain cavity pressure, then cavity distension is maintained, but evacuation of detached tissue pieces becomes difficult
Solution Approach 1:
The outflow port is segmented into an inner circular lumen and an outer annular space, allowing the inner lumen to be sized appropriately for maintaining fluid pressure while the outer annular space provides additional diameter for tissue piece passage. This segmentation enables the system to simultaneously maintain cavity distension and evacuate large tissue fragments
Data Source
AI summary
A continuous flow irrigation endoscope and a continuous flow irrigation fluid management system, both designed to be compatible to each other and meant to function as a single system. The endoscope and the fluid management system are synergistic to each other such that both enhance the efficiency of each other. The system allows a body tissue cavity to be distended by continuous flow irrigation so that the detached tissue pieces and waste fluid present inside a body tissue cavity are continuously automatically evacuated from the tissue cavity without causing the cavity to collapse at any stage and without the need of withdrawing the endoscope or a part of the endoscope from the tissue cavity.