Medicament Shell Assembly for Custom Appearance Without Housing Redesign

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Solution Overview

Problem

Existing medicament delivery devices lack the ability to provide distinct and customizable appearances without altering their basic functionality, which is essential for differentiation among pharmaceutical companies.

Innovation Solution

A shell assembly that accommodates a major part of the medicament delivery device, featuring a closure element and fixation elements to securely hold the device, allowing for customizable appearances through the shell design while maintaining functionality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Shape

If different designs are provided on the housing of medicament delivery devices to distinguish them, then the appearance differentiation is improved, but the device complexity and manufacturing difficulty increase because the housing is integrated with device functions

Engineering Contradiction:
Improveappearance differentiationVSAvoidhousing integration complexity
Core Design Contradiction:
ShapeVSDevice complexity

Solution Approach 1:

The device is divided into two main segments: a functional housing containing all operational components and a separate decorative shell that wraps around the housing. This segmentation allows the shell to provide appearance differentiation without interfering with the integrated functions of the housing, thereby resolving the contradiction between shape customization and device complexity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The shell is designed to envelop and nest around the functional housing, creating a layered structure where the outer shell provides aesthetic customization while the inner housing maintains operational integrity. This nesting approach enables distinct appearances without requiring alterations to the functional components, thus reducing device complexity while improving appearance differentiation.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Shape

If labels and colors are used to differentiate medicament delivery devices, then the appearance customization is improved, but the device functionality and structural integrity may be compromised

Engineering Contradiction:
Improveappearance customizationVSAvoiddevice functionality
Core Design Contradiction:
ShapeVSReliability

Solution Approach 1:

By separating the decorative function (shell with labels and colors) from the functional function (housing with operational components), the invention ensures that appearance customization does not compromise device reliability. The shell serves purely aesthetic purposes while the housing maintains full functional integrity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The shell acts as an intermediary layer between the user and the functional housing. It provides appearance customization through labels and colors while physically protecting the housing and its components, thus enhancing rather than compromising device reliability.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Shape

If the housing design is altered to provide unique appearances, then the appearance differentiation is improved, but the manufacturing process becomes more difficult and costly

Engineering Contradiction:
Improveappearance differentiationVSAvoidmanufacturing process
Core Design Contradiction:
ShapeVSEase of manufacture

Solution Approach 1:

The manufacturing process is segmented into two independent streams: manufacturing the functional housing with standard components and manufacturing the decorative shell with customized appearance features. This allows each component to be manufactured using optimized processes for its specific function, improving ease of manufacture while maintaining appearance differentiation.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The shell is designed and prepared in advance with all appearance customization features (labels, colors, contours) before assembly. This preliminary preparation of the decorative element separates the complex customization step from the functional assembly process, thereby simplifying overall manufacturing while achieving unique appearances.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentEP3213784B2Device for a medicament delivery device
Publication Date: 2025.11.12 SHL MEDICAL AG
  • EP3213784B2 patent drawingFigure 1
  • EP3213784B2 patent drawingFigure 2
  • EP3213784B2 patent drawingFigure 3

AI summary

The present invention relates to a shell assembly for a medicament delivery device (14), which shell assembly comprises a medicament delivery device (14), at least one first shell section (12; 102) provided with an entry passage (18; 105) and designed such that at least a major part of a medicament delivery device (14) entered through said entry passage (18; 105) is accommodated inside said at least one first shell section (12; 102), a closure element (38; 104) operably arranged to said at least one first shell section (12; 102) for closing said entry passage (18; 105), and fixation elements (20, 32, 34, 48, 54, 58; 106, 108, 116, 122, 126) arranged for fixating said medicament delivery device (14) in relation to said at least one first shell section (12; 102) and said closure element (38; 104).