Autoinjector Base With Sterilizing Compressible Layer for Hands-Free Use
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Solution Overview
Problem
Conventional autoinjectors and on-body injectors pose challenges for users due to their design, requiring manual handling and adhesion, which can be difficult for patients with dexterity issues or skin sensitivities, and often necessitate additional steps like skin sterilization before injection.
Innovation Solution
The development of autoinjectors with a stacked drug delivery component configuration and a compressible layer that can be adhered to the skin, providing stability and dispensing sterilization fluid during the injection process, allowing for hands-free or assisted operation and reducing the need for separate sterilization steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional autoinjectors use an elongate high-profile housing design, then the device structure is simple and easy to manufacture, but the device requires manual positioning and holding throughout the injection operation, reducing ease of operation
Solution Approach 1:
The patent combines the autoinjector housing with an adhesive layer and compressible material into a single integrated base structure. This merging of components allows the device to be adhered to the skin for hands-free operation, resolving the contradiction by improving ease of operation without requiring separate adhesive applications or additional structural elements.
Solution Approach 2:
The base of the device serves multiple functions: it provides structural support, contains the adhesive layer for skin attachment, and incorporates the compressible material for sterilization fluid dispensing. This multi-functionality improves ease of operation by enabling hands-free use while maintaining a relatively simple overall device structure.
2Ease of operation
If conventional on-body injectors use adhesive across the bottom surface for hands-free operation, then ease of operation is improved, but additional steps like skin sterilization are required, increasing device complexity
Solution Approach 1:
The patent merges the sterilization function with the adhesive base by incorporating a compressible layer containing sterilization fluid directly into the base structure. This eliminates the need for separate sterilization steps, allowing hands-free operation while reducing procedural complexity.
Solution Approach 2:
The compressible layer is pre-filled with sterilization fluid and positioned within the base structure before use. When the device is applied to the skin, the sterilization fluid is automatically dispensed, performing the sterilization action in advance before the injection occurs, thus simplifying the overall procedure.
3Productivity
If the device uses a compressible layer with sterilization fluid, then sterilization is integrated and procedural time is reduced, but the device structure becomes more complex
Solution Approach 1:
The compressible layer containing sterilization fluid is nested within the base structure of the device. This nesting arrangement integrates the sterilization function into the existing device architecture without requiring separate sterilization components, thereby reducing procedural time while maintaining relatively simple device structure.
4Stability of the object's composition
If the adhesive layer extends across the bottom surface, then stability during injection is improved, but skin sensitivity issues may arise, reducing ease of operation
Solution Approach 1:
The patent applies adhesive material locally within the base structure rather than across the entire bottom surface. The adhesive is contained in specific regions where it is needed for stability, while other areas use alternative materials that are more skin-friendly, thus maintaining device stability while improving skin compatibility.
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 new design enhances user convenience by enabling easier handling and stability, reduces the risk of device movement during injection, and simplifies the injection process by integrating sterilization, thus improving user experience and reducing procedural time.
Implementation Method 1
a compressible layer 210... that can be adhered to the skin
Implementation Method 2
a compressible layer 210... that can be adhered to the skin, providing stability and dispensing sterilization fluid during the injection process
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
Delivery devices for administering drugs are disclosed. An example apparatus, includes a body including: a handle in which a syringe assembly is to be disposed; a base having a bottom face to be disposed adjacent a user; and an absorbent material attached to the bottom face, the absorbent material structured to hold a fluid to be released onto the user prior to or during an injection procedure.