Overflowable Filter Element for Dialysis Concentrate Degassing

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Solution Overview

Problem

In dialysis concentrate preparation, gas bubbles formed during the dissolving and mixing processes interfere with density measurements, leading to inaccurate results, and existing methods are impractical due to the time required for degassing, which is not feasible for prompt use in dialysis treatments.

Innovation Solution

A device with an overflowable filter element is integrated into mixing systems to remove gas bubbles from dialysis concentrates, allowing for immediate and accurate density measurements by converting gas bubble-laden concentrates into bubble-free ones, which can then be recycled back into the mixing process without discarding any concentrate.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If dialysis concentrate is allowed to rest for natural outgassing, then gas bubbles are removed and measurement accuracy improves, but treatment planning is delayed due to the time required (up to several hours)

Engineering Contradiction:
Improvedensity measurement accuracyVSAvoidtime required for degassing
Core Design Contradiction:
Measurement precisionVSLoss of time

Solution Approach 1:

The patent extracts gas bubbles from the dialysis concentrate by passing it through a filter element that separates and removes gas bubbles while allowing the liquid concentrate to pass through. This active extraction replaces the passive waiting period for natural outgassing, enabling immediate accurate density measurements without delaying treatment planning.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The filter element performs preliminary degassing action on the dialysis concentrate before it reaches the density measurement device. By removing gas bubbles in advance of the measurement process, the system ensures accurate measurements are available immediately when needed, eliminating the time loss associated with waiting for natural outgassing to occur.

Inventive Principle:
Principle #10Preliminary action

2Productivity

If dialysis concentrate is measured immediately after preparation, then treatment planning efficiency is maintained, but measurement accuracy deteriorates due to gas bubbles causing falsification of density readings

Engineering Contradiction:
Improvetreatment planning efficiencyVSAvoiddensity measurement accuracy
Core Design Contradiction:
ProductivityVSMeasurement precision

Solution Approach 1:

The filter element acts as an intermediary component between the dialysis concentrate preparation and the density measurement device. It intercepts and removes gas bubbles from the concentrate stream before the liquid reaches the measurement device, thereby eliminating the source of measurement falsification while maintaining the immediate measurement capability needed for efficient treatment planning.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The system extracts the harmful gas bubbles from the dialysis concentrate using a specialized filter element that allows liquid to pass through while retaining and removing gas bubbles. This extraction process occurs immediately after preparation, enabling accurate measurements without compromising treatment planning efficiency.

Inventive Principle:
Principle #2Taking out (Extraction)

3Productivity

If mechanical mixing operation is used to prepare dialysis concentrates, then dissolution process is efficient, but gas bubbles are introduced into the concentrate causing measurement errors

Engineering Contradiction:
Improvedissolution efficiencyVSAvoiddensity measurement accuracy
Core Design Contradiction:
ProductivityVSMeasurement precision

Solution Approach 1:

The patent converts the harmful effect of mechanical mixing (introducing gas bubbles) into a beneficial process by using the same mixing energy to drive the concentrate through a filter element that actively removes the bubbles. The filter element captures and removes gas bubbles generated during efficient mechanical mixing, transforming the previously harmful bubbles into removable impurities that can be eliminated before measurement.

Inventive Principle:
Principle #22Blessing in disguise (Convert harm into benefit)

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

This solution enables prompt and accurate density measurements, reducing errors caused by gas bubbles and allowing ongoing monitoring during production, thereby improving the quality and safety of dialysis solutions for patients by ensuring precise composition and dissolution verification.

Implementation Method 1

an overflowable filter element, such that the overflowable filter element converts a gas bubble-laden dialysis concentrate at the input end into a gas bubble-free dialysis concentrate at the output end

Methodology Applied
Scientific EffectFiltration: Filter (physical)

Data Source

PatentUS11813389B2Device and method for degassing of dialysis concentrates for automatic density measurement in mixing installations
Publication Date: 2023.11.14 VIVONIC GMBH
  • US11813389B2 patent drawing
  • US11813389B2 patent drawing
  • US11813389B2 patent drawing

AI summary

The invention relates to a device (10) for degassing dialysis concentrates for automatic density measurement in mixing systems, comprising: an overflowable filter element (53), wherein the overflowable filter element (53) converts gas bubble-laden dialysis concentrate at the input end into a gas bubble-free dialysis concentrate at the output end. The invention also relates to a mixing system (M) having a device (10) according to the invention and a method for degassing dialysis concentrates for automatic density measurement in mixing systems (M), comprising the steps: Introducing (100) the dialysis concentrate laden with gas bubbles into the overflowable filter element (53), Filtering out (200) gases, Diverting (300) the gas bubble-free dialysis concentrate, Measuring (400) the density of the gas bubble-free dialysis concentrate.