Medicament Delivery Device Movable Grip Member

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Solution Overview

Problem

Medicament delivery devices face challenges in providing a secure grip for users with reduced dexterity while maintaining a compact size and discrete usage, as well as ensuring a premature activation locking function.

Innovation Solution

A medicament delivery device with a movable grip member that changes from a rest position to an operation position, featuring an elongated arc-shaped rib for improved grip size, along with a support member to prevent radial movement and a mechanism for actuation locking, allowing for enhanced usability and safety.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the device is made with a larger size to provide better grip for persons with reduced dexterity, then the grip security is improved, but the device becomes more difficult to bring along and use in a discrete way

Engineering Contradiction:

Improvegrip securityVSAvoiddevice size

Core Design Contradiction:

Ease of operationVSVolume of moving object

Solution Approach 1:

The grip member is designed to be movable between a rest position (reduced grip size) and an operation position (increased grip size). This dynamic transformation allows the device to adapt its grip dimensions based on operational needs, resolving the contradiction between compact storage and secure handling.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The grip member can be positioned within the housing contours when not in use, effectively nesting the extended grip structure within the compact device body. This allows the device to maintain a small form factor while providing extended grip surfaces when needed.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Adaptability or versatility

If the device includes multiple automatic or semi-automatic functions such as mixing, priming, penetration, injection and withdrawal, then the functionality is improved, but the necessary size of the device increases

Engineering Contradiction:

ImprovefunctionalityVSAvoiddevice size

Core Design Contradiction:

Adaptability or versatilityVSVolume of moving object

Solution Approach 1:

The device integrates multiple functions (mixing, priming, penetration, injection, withdrawal) into a single unified system. The grip member serves both as an operational aid and as part of the activation mechanism, demonstrating multi-functionality that reduces overall device complexity and size.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If the device provides a premature activation locking function, then the safety is improved, but the device complexity increases

Engineering Contradiction:

ImprovesafetyVSAvoidmechanism complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The grip member is integrated with the activation locking mechanism. The same structural element that provides enhanced grip also serves as part of the safety lock system, merging the gripping function with the safety function to avoid adding separate complex locking components.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentEP2560711B1Medicament delivery device

Publication Date: 2018.02.28 SHL GRP AB

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AI summary

Medicament delivery device comprising an elongated housing (10) comprising a grip member (64) connected to the elongated housing and movable between a rest position in which the device has a predetermined grip size and an operation position in which the pre-determined grip size of the device is increased for providing an improved grip of the device during use.