Fluid Deficit Monitoring With Auto Pause During Endoscopy
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing fluid management systems in flexible ureteroscopy and endoscopic procedures face challenges in accurately calculating and monitoring fluid deficit, which can lead to complications such as edema and sepsis due to excess fluid absorption, and are hindered by the difficulty in tracking fluid loss outside the collection system.
Innovation Solution
A fluid management system with sensors and a controller that calculates fluid deficit by monitoring pressure and temperature, adjusts fluid flow rate and pressure based on system parameters, and automatically pauses or resumes calculation based on the insertion and removal of the medical device, incorporating a vacuum pump and collection container for continuous monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If fluid management systems manually track fluid delivery using gravity bags or syringes, then the system complexity is reduced, but measurement precision of fluid deficit deteriorates
Solution Approach 1:
The patent replaces manual mechanical tracking methods (gravity bags, syringes) with an automated electronic fluid management system that uses sensors, pumps, and controllers to automatically monitor and calculate fluid deficit, thereby improving measurement precision while accepting increased system complexity
Solution Approach 2:
The fluid management system automatically monitors fluid delivery and calculates deficit without requiring manual intervention, using integrated sensors and controllers to self-track fluid volumes, pressures, and temperatures throughout the procedure
2Measurement precision
If fluid management systems continuously monitor fluid deficit, then measurement precision improves, but device complexity increases
Solution Approach 1:
The patent combines multiple monitoring functions (fluid delivery tracking, deficit calculation, alarm generation) into a single integrated fluid management system, reducing overall complexity while maintaining continuous monitoring precision through centralized control
Solution Approach 2:
The fluid management system performs multiple functions simultaneously - monitoring fluid delivery, calculating deficit, tracking pressure and temperature, and generating alarms - through a single multi-functional device that reduces the need for separate specialized equipment
3Reliability
If the system automatically pauses fluid deficit calculation when the device is removed, then reliability of fluid deficit data improves, but loss of time occurs during pausing and resuming
Solution Approach 1:
The system uses feedback from sensors that detect whether the medical device is inserted or removed to automatically pause or resume fluid deficit calculation, ensuring reliability by only calculating when the device is properly positioned while minimizing time loss through automatic state transitions
4Measurement precision
If the system monitors fluid pressure and temperature continuously, then measurement precision of fluid parameters improves, but use of energy increases
Solution Approach 1:
The system maintains continuous monitoring of fluid pressure and temperature throughout the procedure to ensure accurate deficit calculation, accepting increased energy consumption as necessary for maintaining measurement precision and patient safety
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 provides accurate and continuous fluid deficit monitoring, preventing complications by maintaining safe fluid levels and ensuring precise fluid management during procedures.
Implementation Method 1
an inflow pump configured to pump fluid from a fluid supply source to the treatment site
Implementation Method 2
a vacuum pump and a collection container in fluid communication with a collection drape
Implementation Method 3
one or more sensors proximate a distal end of the elongate shaft
Implementation Method 4
the one or more sensors includes a temperature sensor
Data Source
AI summary
A fluid management and medical device system may include a fluid management system and a medical device having one or more sensors proximate the distal end of the elongate shaft of the medical device. The controller of the fluid management system may be configured to calculate a fluid deficit when the distal end of the elongate shaft is disposed within a patient and configured to automatically pause fluid deficit calculation when the distal end of the elongate shaft is removed from the patient. In some instances the controller is configured to calculate the fluid deficit using rotational speed of the inflow pump in combination with a difference between a change in weight of a fluid supply source supplying fluid to the fluid management system and a change in weight of a collection container collecting fluid from the fluid management system.