Integrated Infusion Cannula Contact Design for Stable Signal Transfer
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Solution Overview
Problem
Existing highly integrated drug infusion devices face issues with electrical connection stability and service life due to the sliding connection between the PAD and the electrical connection area, which often results in PAD damage.
Innovation Solution
The device incorporates a conductor with one end fixed and electrically connected to the PAD, and the other end slidably connected to the electrical connection area of the program unit, eliminating the sliding connection between the PAD and the electrical connection area and using an elastic conductor for enhanced stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the PAD is slidingly connected to the electrical connection area to receive signals, then the device achieves integrated sensor and infusion functionality, but the PAD is easily damaged during sliding, reducing electrical connection stability and service life
Solution Approach 1:
The patent introduces a conductor as an intermediary component between the PAD and the electrical connection area. The conductor transmits electrical signals from the PAD to the program unit while being slidably connected to the electrical connection area, thereby protecting the PAD from direct sliding contact and damage. This mediator approach resolves the contradiction by allowing signal transmission without direct PAD-to-connection sliding.
Solution Approach 2:
The patent extracts the sliding connection function from the PAD itself and assigns it to a separate conductor component. By taking out the sliding interface from the PAD, the invention protects the PAD from mechanical damage while maintaining the electrical connection functionality through the conductor's sliding connection to the electrical connection area.
2Device complexity
If the PAD is slidingly connected to the electrical connection area, then the device structure is simplified, but the service life is reduced due to PAD damage during sliding
Solution Approach 1:
The conductor serves as a mediator that extends the service life of the device by absorbing the mechanical wear from sliding movements. Instead of the PAD being directly damaged during sliding, the conductor takes on this role, thereby preserving the PAD and extending the overall service life while maintaining relatively simple device structure.
Solution Approach 2:
The patent applies beforehand cushioning by introducing the conductor as a protective element prior to any potential PAD damage. The conductor is positioned and connected in advance to prevent direct contact between the PAD and the sliding interface, thereby cushioning against future wear and damage that would otherwise reduce service life.
3Length of stationary object
If the PAD is directly connected to the electrical connection area, then the electrical connection path is shortened, but the wear resistance is reduced due to direct sliding contact
Solution Approach 1:
The conductor acts as an intermediary that extends the electrical connection path slightly but dramatically improves wear resistance. By inserting the conductor between the PAD and the electrical connection area, the invention trades a small increase in connection path length for significant gains in wear resistance and durability during sliding operations.
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 improves the stability of the electrical connection and prolongs the service life of the drug infusion device by reducing wear on the PAD and utilizing an elastic conductor for enhanced contact stability.
Implementation Method 1
the conductor is an elastic conductor
Data Source
AI summary
A highly integrated drug infusion device includes an infusion unit to deliver drugs; a program unit including an input end and an output end, and the input end includes a plurality of electrically connection areas for receiving the signal of analyte data, after the output end is electrically connected to the infusion unit, the program unit controls the drug delivering; an infusion cannula provided with electrodes and electrode contact point; and a conductor, one end is fixed and electrically connected to the electrode contact point, and the other end is slidably and electrically connected to the electrical connection area, when the infusion cannula is installed in the working position, the infusion cannula is connected with the infusion unit, the drug can be injected into the body through the infusion cannula, and the conductor is electrically connected to the electrical connection area, inputting signal of analyte data to the program unit.