Adhesive Medicament Delivery Device for Stable Injection
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Solution Overview
Problem
Existing medicament delivery devices face challenges in maintaining a stable holding position during injection, leading to discomfort, wet injection sites, early device removal, and partial medicament delivery due to the need for users to counteract spring forces and manually manage adhesive covers.
Innovation Solution
A medicament delivery device with a moveable outer frame that exposes an adhesive region by removing a protective barrier as it retracts, allowing single-action adhesion to the injection site, reducing the need for users to hold the device steady and simplifying the injection process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the device uses a manual holding mechanism during injection, then the user can control device position, but the user must apply continuous holding force which causes discomfort and may lead to early device removal
Solution Approach 1:
The adhesive attachment element automatically secures the device to the injection site without requiring the user to apply continuous holding force. The adhesive performs the securing function autonomously, allowing the user to simply hold the device briefly during attachment while the adhesive takes effect, thereby eliminating the need for sustained manual effort and reducing user discomfort.
Solution Approach 2:
The adhesive attachment element is applied to the injection site before needle insertion. This preliminary attachment ensures the device is securely positioned in advance, allowing the user to focus solely on the injection action without needing to simultaneously maintain device stability, thereby simplifying the overall operation and reducing user burden.
2Reliability
If the device requires separate steps for removing protective barrier and activating adhesion, then the adhesive can be protected until needed, but the multi-step process increases complexity and time required
Solution Approach 1:
The protective barrier removal and adhesive activation steps are merged into a single integrated action. The protective barrier is designed to be removed by the same user motion that activates the adhesive, combining two previously separate functions into one unified step. This reduces the number of steps required while maintaining reliable adhesive protection until activation.
Solution Approach 2:
The protective barrier is pre-positioned to cover the adhesive region, and its removal is integrated with the activation motion. The barrier is designed to be peeled or detached as part of the same user action that engages the adhesive, so the protection is maintained until the precise moment of activation without requiring separate preparatory steps.
3Ease of operation
If the adhesive region is exposed before needle insertion, then the device can be attached to the skin, but the adhesive may become contaminated or lose effectiveness
Solution Approach 1:
The protective barrier is pre-applied to the adhesive region to prevent contamination before the adhesive is activated. The barrier remains in place during device handling and transport, and is only removed at the moment of activation, ensuring the adhesive surface remains clean and effective throughout the process while still allowing timely attachment when needed.
Solution Approach 2:
The protective barrier serves as an intermediary layer between the adhesive and the external environment. It physically separates the adhesive from potential contaminants in the air or on surfaces, allowing the adhesive to remain protected and effective until the barrier is intentionally removed at the activation moment, at which point the adhesive can safely contact the injection site.
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 device ensures secure adhesion to the injection site, facilitating easier handling and complete medicament delivery without the need for users to apply holding forces, thereby reducing discomfort and ensuring full dose administration.
Implementation Method 1
an attachment element comprising an adhesive region for attaching the medicament delivery device to a surface
Data Source
AI summary
There is provided a medicament delivery device comprising: a main body arranged to receive a medicament cartridge; a needle for delivery of medicament from the medicament cartridge; a needle cover moveable between an initial position, in which the needle cover covers the needle, and an activated position for dispensing medicament from the medicament delivery device, wherein in the activated position the needle protrudes from a distal end of the needle cover; an outer frame, moveable relative to the main body between an extended position in which the outer frame extends past a distal end of the needle, and a retracted position in which the outer frame is moved towards the main body; an attachment element comprising an adhesive region for attaching the medicament delivery device to a surface when the needle cover is in the activated position, the attachment element comprising a protective barrier covering the adhesive region.