Multi-part Cap Closure with Dosing Insert for Liquid Pharmaceuticals

Solution Overview

Problem

Existing dosing closure devices for bottles are complex and unreliable, with issues such as punctured sealing disks causing blockages and requiring complex displacement mechanisms, which compromise hygiene and sealing effectiveness.

Innovation Solution

A multi-part cap closure system featuring a cup-shaped intermediate base with a latching device for reliable assembly, a sleeve-shaped holding part for detachable attachment, and a dosing insert with a frictional mounting pin and fixing collar for secure engagement in the bottle neck, eliminating the need for sliding mechanisms and ensuring hygiene by preventing sealing disk remnants from obstructing the outflow.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a punctured sealing disk mechanism is used to seal the bottle neck, then sealing effectiveness is improved, but sealing disk remnants can block the outflow opening of the dosing insert

Engineering Contradiction:

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent extracts and removes the harmful sealing disk remnants from the bottle neck area after the sealing function is fulfilled. The dosing insert is designed to push the punctured sealing disk away from the outflow opening, effectively taking out the problematic remnants from the critical flow path.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The dosing insert acts as an intermediary element between the sealing disk and the outflow opening. It mediates the interaction by pushing the sealing disk remnants away, preventing them from blocking the outflow while maintaining the sealing function during storage and transport.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Object-affected harmful factors

If a complex displacement mechanism is implemented to store the dosing insert outside the bottle neck, then hygiene is improved, but device complexity increases

Engineering Contradiction:

Core Design Contradiction:

Object-affected harmful factorsVSDevice complexity

Solution Approach 1:

The cap closure is segmented into multiple functional parts: an inner cap for sealing, an outer cap for dosing, and a dosing insert. The dosing insert is held in the outer cap during storage, separating it from the bottle contents and eliminating the need for complex displacement mechanisms. This segmentation allows simple, reliable attachment and detachment without compromising hygiene.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Instead of moving the dosing insert into position through complex displacement mechanisms, the invention inverts the approach by holding the dosing insert in the outer cap from the beginning and simply attaching the outer cap to the inner cap. This reverses the traditional sequence and eliminates the need for complicated movement mechanisms.

Inventive Principle:

Principle #13The other way round (Inversion)

3Ease of operation

If a hinged lid is used to close the cap closure, then ease of operation is improved, but closure reliability deteriorates

Engineering Contradiction:

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The inner cap with sealing disk functions as a disposable component that is removed after first use. This eliminates the need for complex reusable hinged lid mechanisms, providing simple, reliable closure for storage while maintaining ease of initial opening through straightforward removal of the inner cap assembly.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

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 solution provides a structurally simple, reliable, and hygienic dosing closure that ensures a compact and tamper-evident design, preventing blockages and ensuring consistent sealing and safe dispensing of liquid pharmaceuticals.

Implementation Method 1

a dosing insert (7) held in the outer cap (6), which after the first opening of the cap closure by removing the inner cap (4) and the intermediate base (5) and the first putting on the outer cap (6) onto the bottle neck (1) can be permanently engaged in position in the outlet opening (28) of the bottle neck (1)

Methodology Applied

Scientific EffectFriction: Friction

Data Source

PatentEP3838788B1Dosing closure device for bottles and cap closure

Publication Date: 2023.03.01

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AI summary

A dosing closure device for bottles, in particular for storing and dispensing liquid pharmaceuticals, is provided with: - a bottle neck (1) of the bottle, - a multi-part cap closure (3) that can be mounted on the bottle neck (1), comprising: = an inner cap (4) with a mounting element for attachment to the bottle neck (1), = an intermediate base (5) detachably attached to the inner cap (4), = an outer cap (6) detachably attached thereto with a mounting element for attachment to the bottle neck (1), and = a dosing insert (7) held in the outer cap (6), which, after the cap closure (3) has been opened for the first time, can be permanently brought into position in the outlet opening (28) of the bottle neck (1) by removing the inner cap (4) and the intermediate base (5) and placing the outer cap (6) on the bottle neck (1) for the first time.