Inside Stopper With Brush For Medical Solution Applicator

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Solution Overview

Problem

Conventional medical solution applying containers face difficulties in adjusting the extraction amount of medical solution, particularly for users with weak grips, leading to either insufficient or excessive solution application.

Innovation Solution

A medical solution applying container with an inside stopper featuring a brush inserted-and-mounted hole and a pressing-for-maintaining portion, which allows for adjustable protrusion of the brush and thus control over the solution extraction amount.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the user pinches or squeezes the medical solution container body to adjust the extraction amount, then the extraction amount can be adjusted according to grip strength, but users with weak grips cannot achieve appropriate extraction amounts leading to insufficient or excessive solution application

Engineering Contradiction:

Improveextraction amount adjustmentVSAvoidextraction amount control

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

The container body is divided into multiple grip portions at different positions, each providing different mechanical advantage. Users can select the grip portion that suits their grip strength, enabling precise extraction amount control without requiring strong grip force.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The container body is designed with flexible portions that allow dynamic adjustment of the squeezing mechanism. The flexible portions deform under grip force to control the extraction amount, adapting to different user grip strengths automatically.

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If the container body is made of plastic material for flexibility, then the container can be pinched or squeezed for solution extraction, but the structural strength is reduced making it difficult to maintain precise extraction control

Engineering Contradiction:

Improvecontainer flexibilityVSAvoidstructural strength

Core Design Contradiction:

Adaptability or versatilityVSStrength

Solution Approach 1:

The container body combines plastic material with reinforcing ribs or stiffening structures. The plastic portions provide flexibility for squeezing while the reinforcing elements maintain structural strength and prevent excessive deformation, enabling controlled extraction.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The container body is segmented into flexible portions and rigid portions. The flexible portions allow pinching and squeezing for solution extraction, while the rigid portions (such as grip portions with reinforcing structures) maintain structural strength and provide stable grip points.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentEP4140913B1Drug solution applicator container provided with an inside plug

Publication Date: 2025.06.18 TAISEI KAKO CO LTD

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AI summary

It is intended to provide an inside stopper used for a medical solution applying container by which the extraction amount of a medical solution can be easily adjusted. The present inside stopper (14) is attached at a lower end portion thereof to a medical solution container body (12) for storing a medical solution (L) and is provided with a brush (16) attached to an upper end portion thereof so as to apply the medical solution (L). The inside stopper (14) includes a brush inserted-and-mounted hole (26), to which the brush (16) is inserted and mounted, and a pressing-for-maintaining portion (36) that is provided in a lower end portion of the brush inserted-and-mounted hole (26) and presses a lateral periphery of the brush (16) so as to maintain a position of the brush (16) with respect to the inside stopper (14).