Dialysis Heating Bag Radial Expansion Constraint
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Solution Overview
Problem
During dialysis treatments, heating bags used for heating dialysis liquid can burst due to pressure buildup, posing a risk to patients if not detected in time, as existing solutions do not effectively prevent or monitor such occurrences.
Innovation Solution
A heating apparatus with a receiving section and a sensor system designed to monitor the deformation and longitudinal expansion of the heating bag, ensuring it remains within the receiving section's confines, preventing radial expansion and providing a mechanism to alert against potential bursting through a sensor system that can stop the pump if necessary.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the heating bag is arranged on the pressure side of the pump to avoid precipitations, then the heating efficiency is improved, but the risk of bursting increases due to pressure buildup
Solution Approach 1:
The receiving section is designed with a maximum length that is smaller than the heating bag length, creating a pre-established physical constraint that prevents the heating bag from expanding radially beyond safe limits before pressure buildup can cause bursting
Solution Approach 2:
A sensor system continuously monitors the position of the heating bag within the receiving section and provides feedback signals to the control unit, enabling real-time detection of abnormal expansion and triggering alarm or pump shutdown before bursting occurs
2Productivity
If the heating bag expands radially due to pressure, then the heating capacity increases, but the bursting risk increases
Solution Approach 1:
The receiving section constrains the heating bag in the radial dimension while allowing expansion in the longitudinal dimension, redirecting the expansion direction from the harmful radial direction to the safe longitudinal direction within the receiving section
Solution Approach 2:
The heating bag is designed as a flexible container that can deform within the receiving section, with the receiving section acting as a rigid boundary that prevents excessive radial expansion while accommodating controlled longitudinal movement
3Reliability
If a sensor system is added to monitor heating bag deformation, then patient safety is improved, but device complexity increases
Solution Approach 1:
The sensor system uses optical or electromagnetic fields instead of complex mechanical measurement devices to detect the position and deformation of the heating bag, simplifying the overall system while maintaining high monitoring accuracy
Solution Approach 2:
The sensor system serves multiple functions: monitoring heating bag position, detecting radial expansion, and triggering alarm signals, allowing one system to address multiple safety concerns 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 solution effectively prevents heating bag bursting by ensuring it can only expand longitudinally and provides timely alerts, reducing the risk of accidents and ensuring patient safety during dialysis treatments.
Implementation Method 1
heating apparatus (100) for heating a dialysis liquid (2) which is present in a heating bag (1)
Data Source
AI summary
A heating apparatus for heating a dialysis liquid includes a receiving section for receiving a heating bag through which dialysis liquid to be heated can flow, and a sensor system for determining or monitoring the deformation or the position of the heating bag in the receiving section of the heating apparatus or both. A dialysis liquid tube set, a set, a medical apparatus and a method are also described.