Cap Jacket Extension Prevents Container Deformation
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Solution Overview
Problem
Existing drop dispensers risk unintentional liquid discharge due to lack of a liquid-tight seal at the cap, which can occur when the cap primarily serves for mechanical protection rather than sealing, especially when it has ventilation openings, leading to accidental activation during handling.
Innovation Solution
The cap extends over at least half the length of the media container, made of a more resistant material than the container, to absorb radial forces and prevent deformation, ensuring the cap protects the container from unintentional forces and discharge, with optional cutouts for easy removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the cap primarily serves for mechanical protection with ventilation openings, then the outlet opening is protected mechanically, but liquid can escape unintentionally when the device is handled
Solution Approach 1:
The cap is designed to perform multiple functions simultaneously: it provides mechanical protection of the outlet opening, prevents unintentional liquid discharge through liquid-tight sealing, and allows intentional dispensing when removed. This multi-functional design resolves the contradiction by making the cap both a protective cover and a reliable seal against accidental discharge.
Solution Approach 2:
The invention converts the potential harm of ventilation openings (which allow accidental discharge) into a benefit by making the cap itself liquid-tight. The cap's sealing function prevents unintended discharge while still allowing the outlet opening to be mechanically protected, thus transforming the vulnerability of ventilated caps into a reliable protective system.
2Ease of manufacture
If the media container is made of elastically deformable material for easy compression, then the device is inexpensive to produce, but the container is susceptible to unintentional squeezing during handling
Solution Approach 1:
The invention uses an elastically deformable media container made of thin-walled plastic material that can be easily compressed for dispensing. The container's flexibility is maintained for intentional use while being protected from unintentional deformation by the rigid cap that prevents squeezing during handling.
Solution Approach 2:
The rigid cap serves as a protective shield that prevents unintentional compression forces from being transmitted to the elastic media container during handling. By placing the cap on the container beforehand, the system cushions against harmful accidental squeezing while allowing intentional dispensing when the cap is removed.
3Reliability
If the cap extends over a large portion of the media container to prevent unintentional discharge, then reliability is improved, but the device complexity increases
Solution Approach 1:
The cap is segmented into functionally distinct parts: a jacket-shaped extension that provides liquid-tight sealing and protection over a significant portion of the container, and a cap portion that covers the outlet opening. This segmentation allows the cap to achieve high reliability through extended coverage while maintaining relatively simple construction through modular design.
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
This design significantly reduces the risk of unintentional liquid discharge, allowing for controlled dispensing with minimal force required for droplet ejection, ensuring the cap prevents deformation from typical handling forces and maintains a secure seal.
Implementation Method 1
Forces acting radially to the main extension direction are absorbed by the jacket extension, so that they cannot cause any deformation of the media container
Implementation Method 2
The media container is made of an elastically deformable material, in particular an elastically deformable plastic, and are intended to be compressed radially to their main extension direction
Implementation Method 3
This increases the pressure inside the media container, so that the medium is discharged through the outlet opening
Data Source
Figure 1~3
AI summary
The invention relates to a discharge device (10) having an elastically deformable media container (20) for dispensing a pharmaceutical medium, and a removable cap (60). The cap (60) mechanically protects an outlet opening (42) of an outlet unit (40) and/or separates same in a fluid-tight or gas-tight manner with respect to the environment in the installed state thereof. The cap (60) comprises a shell extension (64) enclosing the media container (20) at least in segments, in order to prevent accidental compression of the media container (20) while the cap is in place. The shell extension extends over at least 50% of the length of the media container (20) with respect to an installation direction (1) of the cap, between the outlet unit (40) and an opposite end (26) of the media container (20).