Endoscope Insertion Apparatus Gas Circulation Control
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Solution Overview
Problem
During long-lasting endoscopic procedures like ESD, the mist generated from biological tissues obstructs the endoscope's view due to evaporation and coagulation, especially in narrow spaces, requiring effective gas management to maintain clear observation.
Innovation Solution
An insertion apparatus with dual air feeding and suction systems, controlled by a pressure detector and operation detector, ensures balanced gas circulation to maintain a stable pressure, preventing mist buildup and maintaining visibility during procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If gas is fed into the subject during endoscopic procedures, then the observation view is improved by preventing mist buildup, but the pressure inside the subject becomes unstable
Solution Approach 1:
The system uses a pressure detector to continuously monitor pressure inside the subject and feeds this information back to the controller, which automatically adjusts the gas feeding and suction operations to maintain stable pressure while preventing mist obstruction
Solution Approach 2:
The system performs self-regulation by automatically adjusting gas feeding and suction based on real-time pressure detection, eliminating the need for manual intervention to maintain both visibility and pressure stability
2Illumination intensity
If gas is continuously suctioned from the subject, then mist obstruction is prevented maintaining clear visibility, but the pressure inside the subject becomes unstable
Solution Approach 1:
The pressure detector continuously monitors pressure and provides feedback to the controller, which automatically adjusts the suction operation to remove mist while maintaining stable pressure through real-time control adjustments
3Stress or pressure
If manual gas feeding and suction operations are performed, then pressure control is possible, but the response time is slow and visibility may be compromised
Solution Approach 1:
The system automatically detects pressure changes and mist conditions, then self-regulates gas feeding and suction operations without manual intervention, providing both rapid response and stable pressure control
Solution Approach 2:
Real-time pressure detection and automatic feedback control enable the system to respond immediately to changing conditions, eliminating the delay inherent in manual operation while maintaining pressure control
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 apparatus effectively manages gas circulation to prevent mist obstruction, maintaining clear visibility and stable pressure within the subject, thereby enhancing the observability and treatment performance during endoscopic procedures, especially in narrow spaces like the digestive tract.
Implementation Method 1
a pressure detector configured to detect a pressure in the subject
Data Source
AI summary
An insertion apparatus includes an endoscope, a first air feeding apparatus, a first air suction apparatus, a second air feeding apparatus, a second air suction apparatus, a pressure detector, an operation detector and a controller, and the controller performs first control on the second air feeding apparatus and the second air suction apparatus so that the amount of gas per predetermined time period fed from the second air feeding apparatus becomes equal to the amount of gas suctioned by the second air suction apparatus, and when the operation detector detects the operation and the pressure detector detects that the pressure in a subject changes from a first pressure to a second pressure, the controller maintains the first control to perform air feeding/air suction into/from the subject at the second pressure.