Dialysis Surface Conductivity Sensor for Disinfection Verification
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Solution Overview
Problem
Current dialysis systems lack effective means to ensure proper disinfection of durable medical devices, which can lead to infections and compromised patient safety.
Innovation Solution
Integration of a disinfection sensor system into dialysis machines, featuring electrodes in fluid contact with the machine's outer surface and a conductivity sensor to detect disinfection fluids, determine dwell time, and alert users to cleaning needs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual disinfection protocols are used for dialysis machines, then infection control is attempted, but compliance and effectiveness cannot be reliably verified
Solution Approach 1:
The dialysis machine performs self-monitoring of its disinfection status through integrated sensors that automatically detect the presence and conductivity of disinfectant solutions on its surfaces, eliminating the need for external verification of manual disinfection protocols
Solution Approach 2:
Manual visual inspection and subjective assessment of disinfection quality are replaced with electronic conductivity sensors that objectively measure disinfectant presence and dwell time, transforming a mechanical/manual process into an automated electronic monitoring system
2Measurement precision
If conductivity sensors are integrated into the dialysis machine to detect disinfectant presence, then real-time disinfection monitoring is achieved, but device complexity increases
Solution Approach 1:
The conductivity sensing capability is merged directly into the dialysis machine's existing structure, with sensors integrated into the housing rather than added as separate external devices, thereby reducing overall system complexity while maintaining measurement precision
Solution Approach 2:
The conductivity sensors serve multiple functions: detecting disinfectant presence, measuring disinfectant concentration, and timing dwell duration, allowing a single sensor component to address multiple disinfection verification needs without proportionally increasing complexity
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 system ensures appropriate disinfection protocols are followed, reducing the risk of infections and improving patient outcomes by providing real-time disinfection status feedback and logging disinfection activities.
Implementation Method 1
a conductivity sensor component in electrical contact with the two or more electrodes, the conductivity sensor component configured to send an electrical signal indicating a conductivity of a liquid on an outside surface of the dialysis machine
Data Source
AI summary
In some embodiments, a medical system includes a dialysis machine having at least one outer surface to be disinfected at a given location, at least one disinfection sensor connected to the dialysis machine at the given location, the disinfection sensor including two or more electrode in fluid contact with the outside surface of the dialysis machine, and a conductivity sensor component in electrical contact with the two or more electrodes, the conductivity sensor component configured to send an electrical signal indicating a conductivity of a liquid on an outside surface of the dialysis machine and in contact with the two or more electrodes, a processor configured to receive the electrical signal and thereby determine a disinfection status of the given location, and a user interface configured to indicate the disinfection status of the given location.