Telescoping Injection Device with Adjustable Needle Depth
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Solution Overview
Problem
Conventional injection devices, such as syringes, are bulky and impractical for carrying or wearing, especially for individuals requiring immediate access to medication like epinephrine for severe allergies.
Innovation Solution
The injection device employs telescoping and nested components to achieve a compact design, allowing it to be worn as a bracelet or pendant. It features a storage position for the needle within the device housing and an extended position for injection, along with a needle depth cover and switch for adjustable depth settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If conventional syringe design is used, then injection function is achieved, but device size becomes bulky and impractical for carrying
Solution Approach 1:
The patent applies nesting by placing the needle inside the syringe barrel and the plunger inside the needle, creating a compact telescoping structure. This nested arrangement allows all components to be contained within a small volume when not in use, making the device portable and wearable while maintaining full functionality when deployed
2Volume of moving object
If needle is retracted in storage position, then device compactness is improved, but needle accessibility for injection is reduced
Solution Approach 1:
The patent implements dynamic functionality where the needle, plunger, and barrel can transition between retracted and extended positions. The telescoping mechanism allows rapid deployment from compact storage to functional injection position, and the spring-loaded return mechanism enables automatic retraction after use, providing both compactness and quick accessibility
3Ease of operation
If telescoping components are added for compactness, then device portability is improved, but device complexity increases
Solution Approach 1:
The patent divides the injection device into distinct segmented components: needle, plunger, barrel, and depth cover, each capable of independent movement. This segmentation allows each part to be optimized for its specific function while contributing to the overall telescoping compact structure, managing complexity through functional modularity
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
The compact and wearable design enhances user convenience and accessibility to medication, while the adjustable needle depth settings ensure safe and appropriate injections, addressing the bulkiness and impracticality of traditional syringes.
Implementation Method 1
An embodiment of the device may further include a spring to expand the plunger body relative to the plunger extension.
Data Source
AI summary
An injection device uses telescoping and/or nested components and other features to make the overall device compact in size. The device is configured to have a storage position and an extended position, such that its needle is positioned within the housing of the device in a storage position, with the needle extending beyond the device housing when needed for an injection. The telescoping plunger mechanism has a storage position and an extended position for use. The device includes a needle depth cover, which extends from the device housing for use, and guides the user as to the correct depth for the needle to penetrate the user's skin. A switch allows different depth settings, for example allowing a deeper penetration for injection into a leg, and shallower penetration for injection into an arm.