Blood Treatment Settings Interface for Renal Dose Selection

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Solution Overview

Problem

Setting up blood treatment devices for specific treatment goals, such as renal dialysis, is a demanding and error-prone task due to the need to adjust multiple interacting parameters, which existing systems fail to assist effectively.

Innovation Solution

A computer system with input and output interfaces, a computing device, and a display device that calculates and displays a selection range of parameter combinations for blood pumps and dialysis fluid pumps, allowing users to select the optimal settings for achieving treatment goals, thereby simplifying the setup process.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the user manually inputs multiple setting values for blood treatment parameters, then the treatment device can be configured, but the process becomes demanding and error-prone

Engineering Contradiction:
Improveaccuracy of treatment parameter settingsVSAvoidcomplexity of setting up the device
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The system pre-calculates and stores optimal combinations of treatment parameters (blood pump flow rate, dialysis fluid pump flow rate, and renal dose) before the user needs them. When the user inputs a desired renal dose, the system retrieves pre-computed combinations that satisfy the treatment goal, eliminating the need for users to manually adjust multiple interacting parameters and reducing errors.

Inventive Principle:
Principle #10Preliminary action

2Adaptability or versatility

If the system provides multiple interacting parameters for adjustment, then treatment goals can be achieved, but the number of setting values increases complexity

Engineering Contradiction:
Improveability to achieve treatment goalsVSAvoidnumber of setting values to adjust
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The system segments the complex parameter adjustment task into two parts: (1) The user inputs only the high-level treatment goal (renal dose), and (2) The system automatically provides segmented, pre-calculated combinations of lower-level parameters (blood pump flow rate and dialysis fluid pump flow rate). This segmentation reduces the cognitive load on users while maintaining the ability to achieve treatment goals.

Inventive Principle:
Principle #1Segmentation

3Ease of operation

If the user determines setting values without assistance, then full control is maintained, but the likelihood of errors increases

Engineering Contradiction:
Improveuser control over settingsVSAvoiderror rate in parameter configuration
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The system provides feedback by displaying multiple pre-calculated combinations of parameter settings that all satisfy the user's desired renal dose. The user can review these options and select from validated combinations, receiving feedback that each combination has been verified to meet the treatment goal. This feedback mechanism reduces errors while preserving user control over the final selection.

Inventive Principle:
Principle #23Feedback

Data Source

PatentEP4059025B1Computer system for specifying settings of a blood treatment device
Publication Date: 2026.03.18 FRESENIUS MEDICAL CARE DEUTSCHLAND GMBH
  • EP4059025B1 patent drawingFigure 1
  • EP4059025B1 patent drawingFigure 2
  • EP4059025B1 patent drawingFigure 3a~3b

AI summary

The present invention relates to a computer system (1) for specifying settings of a blood treatment device (100), having a first input interface (I1), a second input interface (I2) and an output interface. It also has a computing device (5) and a display device (I3), wherein the computing device (5) is programmed, after reading in a target value for the renal dosage by way of a blood treatment device (100), to use the display device (I3) to display to a user a graphic containing a selection range (A) from a multiplicity of combinations (K1, K2, K3) of in each case exactly one setting (Q̇1,<sb />Q̇2,<sb />Q̇3) for the flow from the blood pump (101), on the one hand, and exactly one setting (Ḋ1, Ḋ2, Ḋ3) for the flow from the dialysis fluid pump (121), on the other hand. The user may take the displayed selection range A as a basis for selecting one of the displayed combinations by way of a second input interface (I2). The computing device (5) is also programmed such that the setting (Q̇B) for the blood pump (101) and the setting (ḊB) for the dialysis fluid pump (121) in the selected combination (KB) are able to be output by way of the output interface.