Medical Fluid Injector Controller for Simplified Mixed Fluid Programming
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional medical fluid injector devices require significant time and effort to set injection conditions for diluted contrast media, necessitating precise adjustments for each medical fluid to achieve the desired dilution rate, making them cumbersome to use.
Innovation Solution
A medical fluid injector device with a controller unit that allows for intuitive input of the injection rate and mixture ratio of mixed medical fluids, enabling calculation and adjustment of injection rates for both fluids, simplifying the programming of injection conditions and allowing for real-time changes during procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the conventional configuration requires input relating to injection rate and volume for both contrast medium and physiological saline to set injection conditions, then the injection conditions can be set, but it involves considerable time and effort
Solution Approach 1:
The patent extracts the complex dual-fluid programming interface and replaces it with a simplified single-fluid programming interface. The controller automatically calculates the required injection rates for both contrast medium and physiological saline based on user inputs for the diluted contrast medium parameters and mixture ratio, thereby removing the time-consuming manual configuration of multiple parameters while maintaining precise injection control
Solution Approach 2:
The patent introduces a mixture ratio parameter as an intermediary that mediates between the user's high-level intent (desired dilution concentration) and the low-level execution parameters (individual injection rates of two fluids). This intermediary simplifies the user interface by allowing programmers to specify only the mixture ratio rather than manually calculating and setting multiple injection parameters
2Measurement precision
If the conventional configuration requires precise adjustment of injection rate for each medical fluid, then the desired dilution rate can be achieved, but it makes the device cumbersome to use
Solution Approach 1:
The controller performs self-service by automatically calculating the injection rates for both contrast medium and physiological saline based on the user-specified mixture ratio and total injection parameters. This eliminates the need for users to manually perform complex calculations and precise adjustments of multiple parameters, thereby maintaining dilution precision while dramatically improving ease of operation
Solution Approach 2:
The patent changes the parameter interface from requiring multiple precise injection rate inputs to requiring only a mixture ratio input. This parameter transformation allows the system to maintain precise control over dilution rates while simplifying the user interaction model, making the device much easier to operate without sacrificing accuracy
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A medical fluid injector device injecting a patient with a mixed medical fluid provided by a plurality of medical fluids and capable of simply setting injection conditions for the mixed medical fluid. A medical fluid injector (100) includes an injector head (110) injecting a diluted contrast medium into a patient and a controller unit (50). The controller unit (50) performs a process of receiving an input relating to an injection rate of the diluted medical fluid, a process of receiving an input relating to a mixture ratio by an operator, a process of calculating an injection rate of a contrast medium based on the mixture ratio, and a process of calculating an injection rate of physiological saline based on the mixture ratio. The injector head (110) injects the contrast medium and the physiological saline at the calculated injection rate of the contrast medium and the calculated injection rate of the physiological saline, respectively.