Fluid Depletion Warning System for Phacoemulsification Surgery
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional ophthalmic surgery systems lack efficient methods to monitor and control the fluid levels in irrigation sources, leading to potential dehydration of the irrigation fluid, which can result in severe complications such as corneal burns, capsular tears, and loss of vision.
Innovation Solution
The system employs a combination of sensors and processing algorithms to monitor the fluid levels and flow rates in real-time, providing warnings and alerts when the fluid levels approach critical thresholds, thereby ensuring continuous and safe fluid supply during surgery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional visual monitoring methods are used to monitor irrigation fluid levels, then the system complexity is low, but the reliability of fluid level detection is insufficient and warnings are only provided at critical low volumes
Solution Approach 1:
The patent replaces manual visual monitoring with an automated electronic sensor system that uses optical or capacitive sensors to detect fluid levels. This substitution of mechanical/manual monitoring with electronic sensing improves detection reliability while the integrated processor and warning system provide automated alerts before critical depletion occurs, resolving the contradiction between reliability and complexity.
Solution Approach 2:
The system implements continuous feedback monitoring through sensors that constantly measure irrigation fluid levels and provide real-time data to a processor. The processor compares measured levels against predetermined thresholds and triggers warnings when thresholds are approached, creating a closed-loop feedback system that improves reliability through automated detection and alerting.
2Measurement precision
If flow sensors are used to measure flow out of the irrigation source, then measurement capability is improved, but the system only provides warnings when detected flow indicates very low irrigation source volume
Solution Approach 1:
The system performs preliminary action by establishing predetermined threshold values that represent safe minimum fluid levels before depletion occurs. The processor continuously monitors flow and level data, and triggers warnings when measurements approach these pre-set thresholds, providing advance notice before critical depletion happens. This preliminary threshold-based warning system prevents the loss of time by alerting operators before the fluid actually runs out.
Solution Approach 2:
The system uses continuous feedback from flow sensors to compare actual irrigation fluid levels and flow rates against predetermined threshold values. When the feedback indicates that levels are approaching the threshold, the system triggers a warning, creating a closed-loop monitoring system that provides precise measurement and timely alerts, resolving the contradiction between measurement precision and warning timing.
3Device complexity
If no monitoring system is used, then the device complexity is minimal, but severe complications such as corneal burns and capsular tears can occur due to fluid depletion
Solution Approach 1:
The system applies preliminary anti-action by proactively detecting when irrigation fluid levels are approaching depletion thresholds and triggering warnings before actual depletion occurs. This preventive monitoring and alerting system counteracts the potential harmful effects of fluid depletion (corneal burns, capsular tears) by providing advance warning that allows operators to replenish fluid before damage can occur, thus preventing the harmful effects rather than reacting to them.
Solution Approach 2:
The monitoring system continuously provides feedback on irrigation fluid levels and flow rates, comparing real-time measurements against safe operating thresholds. When feedback indicates approaching depletion, the system triggers warnings that enable operators to take corrective action, creating a protective feedback loop that prevents harmful effects while maintaining relatively simple system architecture.
Data Source
Figure 1A
Figure 1B
Figure 2A
AI summary
A system apparatus and method for determining fluid depletion in a surgical system. A surgical system may include a surgical console, display, a processor operatively coupled to the surgical console, and a surgical cassette in fluid communication with an irrigation source and an aspiration line. Certain techniques involve the processor determining a volume of fluid in the irrigation source. The processor may be configured to receive sensed measurements regarding a rate of fluid flow over time from the irrigation source, process the rate of fluid flow relative to the determined volume and produce a first signal for the display to indicate a remaining capacity of the volume of fluid. Warnings and/or alarms may be triggered if fluid volume falls below a predetermined threshold.