Vertical Axis Scale Adjustment for Implantable Fluid Delivery
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Solution Overview
Problem
Implantable fluid delivery systems face challenges in automatically setting an appropriate vertical axis scale for infusion graphs, as different therapeutic agents have varying concentrations, leading to issues with graphical object selection and adjustment, particularly when the graphical objects are too small or extend beyond the display range.
Innovation Solution
The system automatically determines a reference rate value based on the therapeutic agent concentration, adjusting the vertical axis scale to ensure the maximum value is less than the maximum infusion rate, allowing for easier programming and visualization of dosing parameters through a graphical user interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the vertical axis scale is set to accommodate maximum infusion rates for high concentration therapeutic agents, then the display range covers all possible rates, but graphical objects become too small to select and adjust easily
Solution Approach 1:
The vertical axis scale dynamically adjusts based on the concentration of the therapeutic agent being delivered. When a high concentration agent is selected, the scale automatically expands to accommodate higher infusion rates, and when a low concentration agent is selected, the scale contracts to provide better resolution for lower rates. This dynamic adaptation resolves the contradiction by making the display range coverage and graphical object selection ease both optimal for the current therapeutic agent context.
Solution Approach 2:
The system changes the vertical axis scale parameter based on the therapeutic agent concentration parameter. By linking the scale parameter to the agent concentration, the display automatically optimizes its range to match the clinical requirements for that specific agent, ensuring both adequate coverage and sufficient graphical object size for easy selection and adjustment.
2Ease of operation
If the vertical axis scale is set to accommodate low concentration therapeutic agents, then graphical objects are large and easy to select, but the maximum infusion rate for high concentration agents cannot be displayed
Solution Approach 1:
The vertical axis scale is not fixed but dynamically adjusts according to the therapeutic agent concentration. This dynamic behavior allows the system to provide large, easily selectable graphical objects for low concentration agents while automatically expanding the scale to accommodate high concentration agents when needed, thus resolving the contradiction between ease of operation and adaptability.
Solution Approach 2:
The vertical axis scale parameter is changed based on the therapeutic agent concentration parameter. This parameter linkage ensures that the display range automatically adapts to match the clinical requirements of the specific therapeutic agent being programmed, providing both ease of graphical object selection and adequate display range coverage as needed.
3Measurement precision
If manual adjustment of vertical axis scale is required for each therapeutic agent, then precise control over display range is achieved, but programming complexity and time increase
Solution Approach 1:
The system performs self-service by automatically determining the appropriate vertical axis scale based on the therapeutic agent concentration without requiring manual intervention. The programmer automatically configures the display range to match the clinical requirements of the specific therapeutic agent, eliminating the need for clinicians to manually adjust the scale while maintaining precise control over the display range.
Solution Approach 2:
The vertical axis scale is preliminarily configured based on the therapeutic agent concentration before the clinician needs to use it. By pre-calculating and setting the appropriate scale range based on the agent's concentration, the system eliminates the need for manual adjustment during programming, reducing complexity while maintaining measurement precision.
4Productivity
If automatic scaling based on therapeutic agent concentration is implemented, then programming time is reduced and ease of use is improved, but precision in setting display range may be compromised
Solution Approach 1:
The system automatically determines the optimal vertical axis scale based on therapeutic agent concentration, performing the scaling operation autonomously without manual intervention. This self-service approach maintains measurement precision by using clinically relevant concentration-based calculations while significantly improving programming speed and ease of use.
Solution Approach 2:
The vertical axis scale parameter is automatically changed based on the therapeutic agent concentration parameter through a deterministic relationship. This parameter linkage ensures that the automatic scaling maintains clinical precision by baseing the display range on the specific requirements of each therapeutic agent, while eliminating manual adjustment steps and improving programming efficiency.
Data Source
AI summary
A device for programming an implantable fluid delivery device receives a therapeutic agent concentration, wherein the therapeutic agent concentration comprises a mass of the therapeutic agent per unit of volume. The device further determines a reference rate value based on the received therapeutic agent concentration, wherein the reference rate value comprises a mass per unit of time. The device additionally displays a graphical user interface comprising a horizontal axis and a vertical axis, wherein the horizontal axis represents time and the vertical axis represents rates of delivery of the fluid by the implantable fluid delivery device. The maximum value of the vertical axis displayed in the graphical user interface is determined based on the determined reference rate value and is determined to be less than a maximum therapeutic agent infusion rate.