Insufflation Flow Rate Switching for Pressure Control
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Solution Overview
Problem
Existing insufflation systems face challenges in maintaining optimal pressure within a lumen during concurrent manual and automatic insufflation, leading to increased operator burden and poor operability, especially in sensitive areas like the stomach and large intestine.
Innovation Solution
An insufflation system with a first automatic conduit and a second manual conduit, featuring a pressure detecting device, control device, determination device, and flow rate switching device to adjust insufflation flow rates between two settings, preventing rapid pressure increases and enhancing operator control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the insufflation flow rate in manual insufflation is set to be greater than the insufflation flow rate in automatic insufflation, then the response sensitivity is improved, but the pressure inside the lumen rapidly increases, increasing the burden on the patient
Solution Approach 1:
The system dynamically adjusts the insufflation flow rate based on the operational mode. When automatic insufflation is active, the manual insufflation flow rate is set to a lower value (first flow rate) to prevent rapid pressure increases. When automatic insufflation is not active, the manual insufflation flow rate can be set to a higher value (second flow rate) for faster response. This dynamic adjustment resolves the contradiction between response sensitivity and pressure control.
Solution Approach 2:
The system changes the flow rate parameter of manual insufflation based on the state of automatic insufflation. The flow rate switching device selects between a first flow rate (lower) when automatic insufflation is operating and a second flow rate (higher) when it is not, thereby adapting the system parameters to the current operational context to balance responsiveness and safety.
2Stress or pressure
If the insufflation flow rate in manual insufflation is set to be less than the insufflation flow rate in automatic insufflation, then the pressure control is improved, but it takes longer time to adjust the pressure inside the lumen, reducing the response sensitivity
Solution Approach 1:
The system dynamically adjusts the insufflation flow rate based on the operational mode. When automatic insufflation is not active, the manual insufflation flow rate is set to a higher value (second flow rate) to improve response sensitivity. When automatic insufflation is active, the flow rate is reduced to a lower value (first flow rate) to maintain pressure control. This dynamic adjustment resolves the contradiction between pressure control and response sensitivity.
Solution Approach 2:
The system changes the flow rate parameter of manual insufflation based on whether automatic insufflation is active. The flow rate switching device selects between a first flow rate (lower, for pressure control) and a second flow rate (higher, for response sensitivity), thereby adapting the system parameters to the current operational context.
3Ease of operation
If manual insufflation and automatic insufflation are performed concurrently, then the operational burden is reduced, but the pressure inside the lumen rapidly increases without proper flow rate coordination
Solution Approach 1:
The system uses a determination device to detect whether automatic insufflation is being performed, and based on this feedback, the flow rate switching device automatically adjusts the manual insufflation flow rate. When automatic insufflation is detected, the system switches to a lower manual flow rate to prevent excessive pressure increases, thereby enabling concurrent operation while maintaining safe pressure levels.
Solution Approach 2:
The system dynamically adjusts the manual insufflation flow rate based on the operational state. When automatic insufflation is active, the manual flow rate is reduced to a lower value to prevent rapid pressure increases. This dynamic adaptation allows concurrent operation while maintaining pressure safety, reducing operational burden without compromising patient safety.
Data Source
AI summary
There is provided an insufflation system and an insufflation apparatus which can prevent a pressure inside a lumen from rapidly increasing and can achieve operability matched to a sense an operator. The insufflation apparatus is connected to an endoscope and an insertion assisting tool which guides the endoscope into the gastrointestinal tract. Carbon dioxide can be insufflated into a gastrointestinal tract of a patient through an internal conduit of the endoscope according to an operator's operation (manual insufflation). When the operator instructs the insufflation apparatus to perform the automatic insufflation, carbon dioxide is intermittently insufflated into the gastrointestinal tract through the insertion assisting tool so as to make the pressure inside the gastrointestinal tract become a set pressure (automatic insufflation). The insufflation flow rate of the manual insufflation is switched between the high flow rate and the low flow rate according to ON/OFF state of the automatic insufflation.