Adjustable Injection Device Segmented Housing Shells
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Solution Overview
Problem
Existing injection devices lack the ability to be cost-effectively adjusted for different medical indications, as they have an invariable design that cannot be easily modified to accommodate varying requirements in size, shape, and mechanical properties, which is problematic for conditions like multiple sclerosis or use by children, where ergonomic and size adjustments are necessary.
Innovation Solution
The injection device features an elongated housing with interchangeable, non-detachable housing-like shells that can be attached to the external side, allowing for adjustments in shape, haptics, and ergonomics through snap-on connections, enabling the device to be customized for various medical indications without altering the underlying design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the injection device has an invariable housing design, then the device structure is simple and manufacturing is easy, but the device cannot be adjusted to meet different medical indication requirements
Solution Approach 1:
The housing is divided into a base housing and multiple interchangeable housing-like shells that can be attached to the external side. Each shell can be designed with different shapes, sizes, and surface properties to meet specific medical indication requirements, while the base housing remains unchanged.
Solution Approach 2:
The base housing is designed as a universal platform that can accommodate multiple different housing-like shells. This allows a single base device to serve multiple medical indications by simply changing the external shell, achieving multi-functionality without redesigning the entire device.
2Ease of operation
If the injection device is designed with fixed size and shape, then manufacturing is cost-effective, but the device cannot accommodate ergonomic requirements for different patient groups
Solution Approach 1:
The housing is segmented into a standardized base and customizable shells. The shells can be designed with different ergonomic features (size, shape, surface texture) for different patient groups such as children or patients with mobility impairments, while using the same manufacturing processes for the base housing.
Solution Approach 2:
Different housing-like shells provide localized quality variations in terms of size, shape, and surface properties without changing the fundamental device structure. This allows ergonomic optimization for specific user groups while maintaining cost-effective manufacturing of the standardized base housing.
3Adaptability or versatility
If the injection device housing is made non-detachable, then the device structure is simple and reliable, but the device cannot be customized for different medical applications
Solution Approach 1:
The housing system is segmented into a permanent base housing and attachable shells. The attachment mechanism is designed to be simple and reliable, connecting the shells to the base without complex fastening systems, thus maintaining structural integrity while enabling customization.
Solution Approach 2:
The housing configuration is made dynamic through the ability to attach and detach different shells based on medical indication requirements. This allows the device to adapt its external characteristics while maintaining a stable and simple internal structure.
Data Source
AI summary
An apparatus and method for adjusting an injection device for administering a substance that includes a device housing with an array of fastening points. The apparatus has at least two housing-like shells, each having at least one holding device and at least one blocking device for attaching to the housing. The holding device of a first shell can be attached to a fastening point, and the holding device of a second shell can be attached to a further fastening point. Upon attaching all of the plurality of housing-like shells to the housing, the blocking devices of the plurality of housing-like shells prevent the disengagement of the plurality of housing-like shells from the housing by blocking detachment of the holding devices from the fastening points. At least one of the housing-like shells comprises an electronic assembly and shell attachment to the housing activates the electronic assembly.