Absorption Pad Support for Ophthalmic Dispensing
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Solution Overview
Problem
Existing ophthalmic liquid dispensing devices face contamination issues due to particle generation during the assembly of the absorption pad, which can lead to the administration of harmful particles into the eye.
Innovation Solution
The absorption pad is fixed to a support made of a stronger material than the pad itself, reducing particle generation during assembly and preventing particles from being trapped inside the protective cap.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the absorption pad is directly mounted in the protective cap, then the device structure is simpler, but particles are generated during assembly that can contaminate the product
Solution Approach 1:
A support structure made of stronger material is introduced as an intermediary between the absorption pad and the protective cap. This support serves as a mounting platform that prevents direct contact and friction between the friable absorption pad and the protective cap, thereby eliminating particle generation during assembly while maintaining structural simplicity.
2Reliability
If the absorption pad is made of friable material for better absorption, then absorption performance is improved, but particle generation during handling increases
Solution Approach 1:
The support structure acts as a protective intermediary that holds the friable absorption pad during assembly operations. By providing a rigid mounting platform, the support enables the absorption pad to maintain its friable, high-performance material properties without generating particles during handling and installation.
Solution Approach 2:
The material strength parameter of the mounting structure is changed from soft (direct pad mounting) to hard (support structure), which fundamentally alters the friction and particle generation characteristics during assembly while preserving the absorption pad's original material properties.
3Object-generated harmful factors
If particles are generated during assembly, then contamination of the product occurs, but adding a support structure increases device complexity
Solution Approach 1:
The support structure serves as a simple intermediary component that prevents particle generation and product contamination. Its design is intentionally minimalistic, providing only the necessary mounting function without adding complex mechanisms, thus achieving contamination prevention with minimal increase in device complexity.
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 solution effectively limits the quantity of particles that can contaminate the ophthalmic product, reducing the risk of administering harmful particles into the eye and ensuring compliance with regulatory standards.
Implementation Method 1
The protective cap comprises an absorption pad... made in such a way that residual liquid is absorbed by the pad
Implementation Method 2
particles from the pad may be generated, in particular by friction occurring when handling the pad on the protective cap
Data Source
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AI summary
The invention relates to a liquid-dispensing device (10) comprising a cap (12) for protecting a liquid-dispensing opening (22), the protective cap (12) being provided with a pad (36) for absorbing residual liquid, made of an absorbent material, said absorbent pad (36) being fastened to a support (42) made of a more resistant material than the absorbent pad, said support (42) being furthermore fastened in the protective cap (12).