Peritoneal Dialysis Apparatus Optical Turbidity Detection
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Solution Overview
Problem
Visual inspection of dialysate discoloration and turbidity in peritoneal dialysis is subjective, leading to inconsistent evaluation by untrained observers, which can result in missed or misinterpreted abnormal changes indicating potential pathological conditions.
Innovation Solution
A device with a conduit and catheter system for peritoneal dialysis that objectively determines and records dialysate color and turbidity using a touch screen display, allowing for comparison against a color spectrum and issuing alarms for deviations, with options for visual and acoustic alerts, and storing data for historical analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If visual inspection is used to evaluate dialysate discoloration and turbidity, then the evaluation process is simple and requires no additional equipment, but the objectivity and consistency of evaluation deteriorates due to subjective perception
Solution Approach 1:
The patent replaces the manual visual inspection method with an automated optical measurement system. A sensor device measures the turbidity of the dialysate by detecting light transmission properties, substituting the mechanical/visual inspection process with an optical measurement system that provides objective, quantifiable data.
Solution Approach 2:
The patent introduces an intermediary measurement device between the dialysate and the observer. This sensor-based intermediary objectively quantifies turbidity by measuring light transmission characteristics, eliminating the need for direct visual interpretation and providing consistent, repeatable measurements.
2Ease of operation
If visual inspection by untrained observers is used, then the system remains simple and accessible, but the reliability of evaluation deteriorates due to subjective and changing criteria
Solution Approach 1:
The patent replaces subjective visual evaluation with an automated optical measurement system that uses physical principles (light transmission) to objectively quantify turbidity. This substitution eliminates variability in human perception and ensures consistent, reliable measurements regardless of observer training level.
Solution Approach 2:
The measurement device performs self-quantification of turbidity without requiring trained observers. The system automatically measures light transmission properties and provides objective data, allowing untrained users to obtain reliable measurements through simple operation of the automated device.
3Measurement precision
If objective measurement devices are introduced to determine color and turbidity, then the measurement precision and objectivity improve, but the device complexity increases
Solution Approach 1:
The patent integrates the turbidity measurement capability into the existing dialysis system, allowing the same device to perform multiple functions including dialysis operations and optical measurements. This multi-functionality approach adds measurement capability without requiring completely separate equipment, thereby limiting the increase in overall system 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
Enhances objectivity in evaluating dialysate turbidity and color, reducing subjective errors and prompting timely medical consultations by providing a standardized and recordable assessment of dialysate conditions.
Implementation Method 1
a sensor device by which the color and the turbidity of the dialysate can be determined
Data Source
AI summary
This invention relates to a device for peritoneal dialysis with a means for the regular discharge and reuptake of dialysate, wherein the means includes an agent by which the color and turbidity of the dialysate can be determined.