Integrated Infusion Cannula Electrodes for Single-Puncture Sensing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing medical devices for diabetes management require separate insertion of glucose sensors and infusion cannulas, increasing the risk of infection and discomfort.
Innovation Solution
An integrated drug infusion device where the infusion cannula functions as both a detection and infusion mechanism, utilizing conductive areas as electrodes for simultaneous analyte detection and drug delivery through a single puncture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If glucose sensor and infusion cannula are separately inserted at different positions, then detection and infusion functions are achieved, but the risk of infection increases and user discomfort increases
Solution Approach 1:
The patent combines the glucose sensor and infusion cannula into a single integrated device that performs both detection and infusion functions through one insertion point into the subcutaneous tissue, thereby reducing the number of punctures and lowering infection risk
Solution Approach 2:
The single inserted device serves multiple functions: it acts as both a glucose sensor for analyte detection and an infusion cannula for drug delivery, eliminating the need for separate devices and insertion points
2Ease of operation
If separate glucose sensor and infusion cannula are used, then detection and infusion can be performed, but the installation process becomes more complex and time-consuming
Solution Approach 1:
By merging the sensor and cannula into one integrated unit, the installation process requires only a single insertion action rather than multiple separate insertions, significantly reducing installation time and simplifying the procedure
3Device complexity
If the infusion cannula serves as the detecting electrode, then the device structure is simplified, but the electrode design becomes more integrated
Solution Approach 1:
The infusion cannula is designed to serve dual purposes: as the physical conduit for drug infusion and as the electrode for electrochemical glucose detection, reducing the overall number of components while maintaining detection functionality
Solution Approach 2:
The cannula wall is designed with specific electrochemical properties in the region where analyte detection occurs, allowing it to function as an electrode while maintaining its infusion function in the same structure
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
Reduces the risk of infection and simplifies the installation process by allowing simultaneous detection and infusion with a single puncture, improving user experience and accuracy through multiple electrode combinations.
Implementation Method 1
The conductive area is directly used as the detecting electrode, so that the infusion cannula performs analyte detection and drug infusion at the same time
Data Source
Figure 1~2a
Figure 2b~3a
Figure 3b~4a
AI summary
The invention discloses an integrated drug infusion device, comprising: infusion unit configured to deliver drugs; program unit comprising input end and output end, and the input end comprises a plurality of electrically connective regions for receiving signals of analyte data in the body fluid, after the output end is electrically connected to the infusion unit, according to the received signals of analyte data in the body fluid, the program unit controls whether the infusion unit delivers drugs; an infusion cannula with conductive area (s), the infusion cannula is the drug infusion channel; and a plurality of electrodes for detecting analyte data in body fluid, the electrode comprising conductive-area electrode (s) and cannula-wall electrode (s), the conductive area of the infusion cannula being at least as a conductive-area electrode, and one or more cannula-wall electrodes being located on/in the wall of the infusion cannula. It takes only one insertion to perform both analyte detection and drug infusion.