Medical Plug Piercing Structure for Residual Liquid Containment
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Solution Overview
Problem
Existing medical rubber plugs for vials suffer from residual liquid leakage when an injection needle is pulled out, leading to potential contamination of the surroundings.
Innovation Solution
A medical plug design featuring a capping portion and a leg portion with a non-adhered first and second portion in the piercing region, allowing for elastic deformation and creation of a buffer space to accommodate leaked liquid.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the medical rubber plug uses a conventional adhered structure in the piercing portion, then the sealability and resistance to liquid leakage are improved, but the ability to accommodate residual liquid and prevent scattering is reduced
Solution Approach 1:
The piercing portion is divided into a first portion (leg portion side) and a second portion (upper surface side) that are not adhered to each other, creating a segmented structure that allows independent deformation of each portion
Solution Approach 2:
The non-adhered first and second portions can elastically deform independently when the injection needle is pulled out, dynamically adjusting to accommodate residual liquid and prevent scattering
2Quantity of substance
If the first portion and second portion are not adhered to each other in the piercing portion, then the buffer space for residual liquid is created, but the structural integrity may be compromised
Solution Approach 1:
The non-adhered interface is localized specifically in the piercing portion where it is needed for liquid accommodation, while other parts of the plug maintain full adhesion and structural integrity
Solution Approach 2:
The rubber material provides flexible deformation capability to the first and second portions, allowing them to move independently while maintaining overall structural integrity through the elastic properties of the rubber
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
Prevents residual liquid leakage by creating a space to contain the leaked solution, ensuring containment and reducing contamination risks.
Implementation Method 1
a first portion (7) located on a leg portion side and a second portion (9) located on an upper surface side of the first portion (7) are provided, and the first portion (7) and the second portion (9) are not adhered to each other
Data Source
AI summary
A medical plug can include: a capping portion; and a leg portion extending downward from the capping portion. The medical plug can include a piercing portion in which a first portion located on the leg portion side and a second portion located on an upper surface side of the first portion can be provided, and the first portion and the second portion may not be adhered to each other.