Backpack Magnetic Coupling Elements Embedded Between Layers

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Solution Overview

Problem

Existing backpacks and suitcases for medical equipment face challenges in easy cleaning and disinfection, and they often lack a secure and precise arrangement of equipment, leading to potential slippage and mixing of items.

Innovation Solution

A backpack or suitcase design featuring a lower and upper shell with inner and outer layers, where magnetic coupling elements are embedded between the layers, allowing for secure fixation of medical devices and instruments without visible protrusions, and facilitating easy cleaning and disinfection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If magnetic fastening elements are freely movable in hollow spaces formed by sewn or welded layers, then the magnetic elements can be positioned flexibly, but the equipment cannot be securely fixed and the interior layers become dirt-prone and difficult to clean

Engineering Contradiction:
Improveflexibility of magnetic element positioningVSAvoidsecurity of equipment fixation
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent divides the shell into an outer layer and an inner layer, with the magnetic coupling elements embedded in recesses of the inner layer. This segmentation allows the magnetic elements to be fixed in specific positions within the inner layer while maintaining the flexibility to position equipment at different locations on the outer surface, resolving the contradiction between flexibility and secure fixation.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The magnetic coupling elements are pre-embedded in the inner layer during manufacturing, creating a stable foundation before equipment is stored. This preliminary action ensures that the magnetic elements are securely positioned and cannot shift, providing reliable fixation for equipment while maintaining ease of cleaning since the magnetic elements are already in place.

Inventive Principle:
Principle #10Preliminary action

2Adaptability or versatility

If magnetic fastening elements are freely movable in hollow spaces, then positioning flexibility is improved, but cleaning and disinfection becomes difficult

Engineering Contradiction:
Improveflexibility of magnetic element positioningVSAvoidease of cleaning and disinfection
Core Design Contradiction:
Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

By separating the magnetic coupling elements and embedding them in the inner layer with recesses, the patent creates a smooth outer surface without protruding magnetic elements. This segmentation allows the outer layer to be easily cleaned and disinfected while the magnetic elements remain securely positioned in the inner layer, resolving the contradiction between positioning flexibility and ease of cleaning.

Inventive Principle:
Principle #1Segmentation

3Ease of manufacture

If magnetic coupling elements are flush-mounted in recesses between inner and outer layers, then cleaning ease is improved and equipment security is enhanced, but the complexity of manufacturing increases

Engineering Contradiction:
Improveease of cleaning and disinfectionVSAvoidcomplexity of layered shell structure
Core Design Contradiction:
Ease of manufactureVSDevice complexity

Solution Approach 1:

The patent combines the magnetic coupling elements with the inner layer structure by embedding them in recesses during the manufacturing process. This merging of the magnetic elements into the layer structure eliminates the need for separate mounting steps and reduces overall device complexity while achieving secure fixation and ease of cleaning.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The inner layer serves multiple functions: it provides structural support, contains the magnetic coupling elements in recesses, and creates a smooth outer surface for easy cleaning. This multi-functionality reduces the need for additional components, simplifying the overall device while achieving the desired cleaning ease and equipment security.

Inventive Principle:
Principle #6Universality (Multi-functionality)

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 design provides a secure, precise, and easy-to-clean solution for arranging medical equipment, preventing slippage and mixing, while ensuring the equipment remains protected from damage and contamination.

Implementation Method 1

magnetic coupling elements are embedded between the layers, allowing for secure fixation of medical devices and instruments

Methodology Applied
Scientific EffectMagnetic coupling: Magnetism

Data Source

PatentEP4427698B1Rucksack or suitcase
Publication Date: 2025.05.07 HESTOMED GMBH
  • EP4427698B1 patent drawingFigure 1~2
  • EP4427698B1 patent drawingFigure 3~4
  • EP4427698B1 patent drawingFigure 5~6

AI summary

The present invention relates to a backpack or suitcase with a lower shell and an upper shell which is hinged to the lower shell, wherein both the lower shell and the upper shell each have an inner layer and an outer layer.To provide a backpack or case that is easy to clean and disinfect and that allows for a safe and precise arrangement of equipment within the backpack or case, the invention proposes a backpack or case in which the upper shell and/or the lower shell has/have magnetic coupling elements, wherein the inner layer of the upper shell and/or the lower shell has a plastic tray with recesses in which the magnetic coupling elements are flush received, wherein the magnetic coupling elements are located between the outer layer and the inner layer of the upper shell and/or between the outer layer and the inner layer of the lower shell, or a plastic plate with recesses is arranged between the inner layer and the outer layer in which the magnetic coupling elements are flush received and fixed in position.