Endoscope Channel Connection Verification via Grouped Pressure Measurement
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Solution Overview
Problem
Existing methods for cleaning and disinfecting endoscopes face challenges in reliably detecting correct connections of channels to cleaning and disinfecting liquid supply lines, often resulting in uncertain and incomplete cleaning due to loose connections or misalignment.
Innovation Solution
The method involves applying pressurized fluid to endoscope channels in groups and measuring pressure in non-pressurized channels to ensure correct connection verification, with alternating fluid supply and pressure buildup enhancing cleaning efficacy through cyclic pressure changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If individual endoscope channels are connected to cleaning fluid supply lines for verification, then connection correctness can be detected, but the detection reliability is limited due to endoscope design and connection implementation
Solution Approach 1:
The invention divides the endoscope channels into two groups: a first group connected to cleaning fluid supply lines for direct pressurization, and a second group connected to pressure sensors for indirect measurement. This segmentation allows reliable connection verification by measuring pressure in the second group when the first group is pressurized, overcoming the limitations of direct connection detection in complex endoscope designs.
2Reliability
If cleaning liquid is continuously supplied to endoscope channels, then cleaning effect is maintained, but standing water column reduces cleaning efficacy
Solution Approach 1:
The invention implements periodic alternation between pressurizing the first group of channels and measuring pressure in the second group. This cyclic pressure build-up accelerates the standing water column repeatedly, enhancing the cleaning effect while maintaining efficient liquid utilization. The periodic action converts static liquid columns into dynamic flow patterns that improve cleaning efficacy.
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
This approach allows for reliable detection of correct channel connections, improving the cleaning and disinfection process by ensuring consistent fluid flow and pressure distribution, thereby enhancing the overall cleaning effect.
Implementation Method 1
measuring the pressure in at least one tube of the group of blocked tubes
Implementation Method 2
applying pressurized fluid to the individual endoscope channels
Data Source
Figure 1
Figure 2
AI summary
The pressure sensors (52.1-52.6) measure the pressure in corresponding hoses (21'-26') connected to adapter (40) and channels of endoscope by connectors. The hoses (21'-23') and hoses (24'-26') are connected to fluid supply line (56) through shut-off devices (55,57), respectively. An electronic controller (74) alternately opens and closes one of the shut-off valves. The controller compares measured pressure value of hose whose shut-off valve is closed, with preset value, and generates an error signal when the measured pressure value deviates from preset value. An independent claim is included for a method for cleaning and disinfecting endoscope.