Wearable Auto-Injecting Device with Sterile Needle Deployment
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Solution Overview
Problem
Current automatic drug injection systems are bulky, require human intervention, and often cause infections due to embedded cannulas, and are not wearable or convenient for immediate and specific treatment of acute medical conditions.
Innovation Solution
A wearable device with an enclosure, injection piston, and hypodermic needle that automatically injects medication without human intervention, using a valve mechanism and tether to ensure sterile delivery based on physiological data, allowing for on-demand and specific drug administration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If embedded cannulas are used in automatic drug injection systems, then the system can deliver medication automatically, but the risk of infection and unintentional dislodgement increases
Solution Approach 1:
The hypodermic needle is pre-loaded in a sterile, sealed state within the injection cylinder before use. The needle remains enclosed and sterile until the moment of activation when it is rapidly deployed. This preliminary preparation of the needle in a sterile state, followed by rapid deployment only when needed, eliminates the risk of infection associated with embedded cannulas that remain in contact with the body over time.
2Speed
If currently available automatic drug injection systems are designed for immediate treatment, then they can respond to acute medical conditions, but they require human intervention which may not be available in unwitnessed emergencies
Solution Approach 1:
The system incorporates sensors that continuously monitor physiological parameters (such as glucose levels, heart rate, or other biomarkers) and provide feedback to the control system. When the sensor detects values indicating a catastrophic emergency condition, the control system automatically triggers the injection mechanism without requiring human intervention. This closed-loop feedback system enables the device to respond autonomously to acute medical conditions.
3Adaptability or versatility
If currently available drug delivery systems are made wearable, then they can be carried for immediate treatment, but they become obtrusive and inconvenient to wear
Solution Approach 1:
The injection system is divided into separate functional components: a sensor module for detecting physiological conditions, a control module for processing sensor data and triggering injection, an injection cylinder containing the sterile needle and medication, and a power source. This segmentation allows each component to be optimized independently and enables the overall system to be made compact and wearable while maintaining functionality and user comfort.
4Speed
If a wearable automatic injection device is designed for immediate treatment, then it can respond rapidly to emergencies, but the device complexity increases
Solution Approach 1:
Multiple functions are merged into integrated components to reduce overall system complexity. The control module combines sensor signal processing, decision-making logic, and injection triggering in a single unit. The injection cylinder integrates the medication reservoir, needle storage, and injection mechanism. The power source is designed to simultaneously power sensors, control electronics, and the injection actuator. These mergers reduce the number of separate components and interfaces while maintaining the capability for immediate automatic treatment.
Data Source
AI summary
A compact and smart wearable device is configured to automatically inject medicines into the wearer. Because hypodermic needles are only deployed when triggered, infection risks are eliminated. Necessary medicines are automatically deployed based on physiological or other data without human intervention to save lives.