Dialysis Conveying Accuracy Check Using Pressure Reference
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Solution Overview
Problem
Existing medical treatment apparatuses face challenges in accurately detecting changes in the conveying capacity of devices over time, which can lead to incorrect dosing of dialysis liquids, due to factors like leaks, material swelling, and wear, making it difficult to ensure patient safety without frequent manual checks by qualified technicians.
Innovation Solution
A method and control device for automatically checking the functionality of conveying devices by setting an initial pressure, performing a predetermined number of conveying movements, measuring the final pressure, and comparing it to a stored reference value to determine any impermissible pressure differences, allowing for automatic detection and evaluation of conveying accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conveying devices are designed robustly to maintain conveying capacity, then reliability is improved, but detecting changes in conveying capacity becomes more difficult
Solution Approach 1:
The system performs preliminary actions by establishing a known initial pressure state in the container before testing the conveying device. This predetermined starting condition enables accurate detection of conveying capacity changes by providing a reference point for comparison after the conveying device operates.
Solution Approach 2:
The patent introduces an intermediary measurement system using pressure sensors and a container to indirectly detect conveying capacity changes. Instead of directly measuring the conveying device's performance, the system measures the pressure change in the container caused by the conveying device's operation, making detection feasible even for robust devices.
2Productivity
If automatic detection of conveying capacity changes is implemented, then productivity is improved, but device complexity increases
Solution Approach 1:
The system enables self-service by allowing the medical treatment apparatus to automatically monitor and detect conveying device performance degradation without external intervention. The control device autonomously performs pressure measurements, compares values against thresholds, and identifies when conveying capacity changes occur, eliminating the need for manual checks by service technicians.
Solution Approach 2:
The patent implements feedback mechanisms where the control device continuously monitors pressure changes in the container and uses this information to detect conveying capacity changes. The system feeds back the measured pressure values to the control device, which then determines whether the conveying device requires maintenance or replacement based on predetermined criteria.
3Measurement precision
If frequent manual checks by service technicians are performed, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The system ensures continuity of useful action by performing conveying capacity monitoring continuously during the operational life of the conveying device. Instead of interrupting operations for periodic manual checks, the automatic detection system operates continuously, maintaining measurement capability without causing downtime or treatment interruptions.
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
Enables reliable, automated assessment of conveying device accuracy, reducing the need for manual checks and minimizing downtime, while predicting potential failures, thus enhancing patient safety and reducing maintenance costs.
Implementation Method 1
measuring the pressure prevailing in the container by means of a pressure measuring
Data Source
AI summary
The present disclosure relates to a method for checking the functionality of conveying devices of a medical treatment apparatus. It further relates to a control device and/or closed-loop control device and to a medical treatment apparatus through which the method according to the present disclosure is effected, to a digital storage medium, a computer program product and to a computer program.