Needle-Concealed Injection Device With Axial Loading Part
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Solution Overview
Problem
Existing injection devices for pharmaceutical substances face issues such as psychological and physical defensive reactions due to visible injection needles, lack of adaptability to different primary packaging, high cost, and complexity in use, particularly with reusable devices like the BETACONNECT®, which require specific syringe types and complicated insertion methods.
Innovation Solution
The injection device is designed with a proximal and distal part separation, where the distal part accommodates the injection loading part and conceals the needle, allowing flexibility in packaging types and user-friendly operation, while being reusable or disposable, and includes a screen for needle concealment and puncture protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the injection needle is visible to the user during use, then the user can see the injection process, but this leads to psychological and physical defensive reactions and negatively affects compliance
Solution Approach 1:
The injection needle is extracted from the user's visual field by being enclosed within the cartridge and distal part housing. The needle remains functional for injection but is hidden from view, eliminating the psychological barrier while maintaining the injection capability.
Solution Approach 2:
The injection needle is nested within the cartridge assembly, which is itself nested within the distal part of the injection device. This multi-layer nesting structure keeps the needle concealed during handling and injection, reducing user anxiety and improving compliance.
2Adaptability or versatility
If the injection device is constructed integrally as a disposable pen, then it cannot be adapted to different primary packaging and requires new development for each application, but this provides a complete single-use solution
Solution Approach 1:
The injection device is segmented into modular components: a reusable proximal part (drive mechanism) and a disposable distal part (cartridge with needle). This segmentation allows the distal part to be adapted to different primary packaging types while the proximal part remains constant, reducing development complexity.
Solution Approach 2:
The proximal part of the injection device is designed as a universal drive mechanism that can work with different distal parts containing various primary packaging types (syringes, cartridges, ampoules). This multi-functionality enables adaptation to different applications without requiring complete redesign.
3Object-affected harmful factors
If a reusable injection device like BETACONNECT is used with screen for needle concealment, then the needle is concealed from the user, but the device is relatively complicated to use and requires specific syringe types
Solution Approach 1:
The screen for needle concealment is merged with the distal part housing rather than being a separate component. The distal part itself serves as the screening structure, eliminating the need for additional screens and simplifying the loading operation.
Solution Approach 2:
Instead of having the needle protrude outward and using a separate screen to cover it, the design inverts the approach by having the distal part housing enclose the needle entirely. The needle is concealed by the natural structure of the cartridge assembly rather than an added protective element.
4Ease of manufacture
If the distal part is designed simply and cost-effectively, then manufacturing complexity and cost are reduced, but the device must still conceal the needle and accommodate different packaging
Solution Approach 1:
The distal part is designed as a universal carrier structure that can accommodate different primary packaging types through standardized interfaces. This multi-functionality allows a single simple distal part design to work with various packaging while maintaining needle concealment.
Solution Approach 2:
The primary packaging is nested within the distal part housing, which itself is nested within the proximal part. This nested structure achieves needle concealment and adaptability through the hierarchical arrangement of simple, cost-effective components rather than complex mechanisms.
Data Source
AI summary
The invention relates to an injection device (1) for injecting a pharmaceutical substance, havinga proximal part (5) which has a drive (7) to implement an injection, and havinga distal part (13) which is configured to accommodate an injection loading part (3), which has a packaging means receiving part (17) and a primary packaging means (23) which held in the packaging means receiving part (17) and in which a pharmaceutical substance is received, wherein the pharmaceutical substance can be injected from the injection loading part (3) when the injection loading part (3) is arranged in the distal part (13), whereinthe distal part (13) is designed in such a way that the injection loading part (3) can be inserted axially into the distal part (13), and whereinthe injection device (1) has a screen (15) which is designed and arranged in such a way that an injection needle (25) of the injection loading part (3) is concealed from a user during use of the injection device (1).