Tamperproof Closure Lever Mechanism for Single-Handed Opening

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Solution Overview

Problem

Existing tamperproof closures for containers, especially medical fluid containers, require two hands to open due to insufficient counter-bearing, posing risks and complications when a single person must operate them.

Innovation Solution

A tamperproof closure design featuring a base and closure part connected via a predetermined breaking point, with force-enhancing means in the form of radially projecting handles or levers that allow single-handed operation by enabling relative movement between the base and closure part without requiring indirect support from the container.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If traditional tamperproof closure design is used, then the closure can be securely sealed on the container, but two hands are required to open it due to insufficient counter-bearing

Engineering Contradiction:

Improvenumber of hands required to open closureVSAvoidcounter-bearing capability

Core Design Contradiction:

Ease of operationVSStrength

Solution Approach 1:

The closure system is divided into separate functional components: a base remaining on the container and a closure part that is removed. The force-enhancing means are segmented between these parts, with one element on the base and another on the closure part, allowing single-handed operation while maintaining secure sealing when closed.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The force-enhancing means act as intermediary elements that transfer and amplify the opening force applied by the user. These levers or buttons provide mechanical advantage, enabling a single hand to generate sufficient force to break the seal without requiring two hands or external support.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If two hands are required to open the closure, then sufficient force can be applied to break the seal, but the user must interrupt other activities or ask for assistance

Engineering Contradiction:

Improvecontinuity of user activityVSAvoidoperational complexity

Core Design Contradiction:

ProductivityVSEase of operation

Solution Approach 1:

The closure system is designed to be self-sufficient for single-handed operation. The force-enhancing means integrated into the closure structure itself provide the necessary mechanical advantage, eliminating the need for external assistance or interruption of other activities. The system serves itself by incorporating the force multiplication mechanism directly into the opening action.

Inventive Principle:

Principle #25Self-service

3Ease of operation

If the closure is designed for single-handed operation, then user convenience is improved, but additional force-enhancing means must be added to the structure

Engineering Contradiction:

Improvesingle-handed operabilityVSAvoidstructural complexity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The force-enhancing means are merged with the existing closure structure rather than being added as separate external components. The levers or buttons are integrated into the base and closure part designs, combining the sealing function with the force amplification function in a unified structure that does not significantly increase overall complexity.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The force-enhancing means serve multiple functions: they provide mechanical advantage for opening, maintain structural integrity of the closure, and can be positioned to allow operation with either hand. This multi-functionality reduces the need for additional dedicated components, minimizing the increase in device complexity.

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

Enables single-handed operation of the tamperproof closure, ensuring secure and reliable opening without the need for additional support, improving handling and safety by allowing operation with either hand and maintaining a secure, tamper-indicating mechanism.

Implementation Method 1

each of the base and the closure part has at least one force-enhancing means (operating lever) by which a movement of the base and the closure part relative to each other can be force-assisted

Methodology Applied

Scientific EffectLever: Lever

Data Source

PatentUS10138030B2Tamperproof closure for use on a container, container therewith, and port for arrangement on the container

Publication Date: 2018.11.27 B BRAUN AVITUM

AI summary

Tamperproof closures for use on a container are disclosed. The closure includes a base which can be arranged on a container port and can be connected thereto in a fluid-tight manner as well as a closure part connected to the base via a predetermined breaking point. Each of the base and the closure part includes at least one force-enhancing means by which a movement of the base and the closure part relative to each other can be force-assisted in terms of destruction of the predetermined breaking point. The movement of the base and the closure part relative to each other can be a rotary movement of the closure part with respect to the base in the opening direction of the closure part and each force-enhancing means can be a handle in the form of a lever projecting radially from both the base and the closure part with respect to the axis of rotation of the rotary movement.