Puncture Port Segmentation for Liquid Storage Sealing
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Solution Overview
Problem
Conventional liquid storage containers face issues with content leakage and loss during puncture due to the size mismatch between the puncture instrument and the puncture port, affecting sealing performance and sterility.
Innovation Solution
A liquid storage container design featuring a puncture port with a cylindrical structure and two partitions, where the second port member is inserted into the first port member, and both are welded to the liquid discharge portion, ensuring the distance between the partitions is longer than the needle tube's opening, maintaining sealing performance regardless of the puncture instrument's size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the inner diameter of the puncture port is made smaller to improve sealing performance, then leakage is reduced, but the puncture instrument cannot be inserted properly
Solution Approach 1:
The puncture port is divided into two separate members: a first port member with a larger outer diameter for easy insertion, and a second port member with a smaller inner diameter for sealing. The second port member is inserted into the first port member, allowing the system to achieve both easy insertion and effective sealing without compromising either function.
2Ease of operation
If the length of the opening portion of the through hole is increased to facilitate puncture, then insertion is easier, but leakage occurs during penetration
Solution Approach 1:
The puncture port is segmented into two members with different dimensional characteristics. The first port member provides a large opening portion for easy puncture insertion, while the second port member provides a small inner diameter for sealing. This segmentation allows the system to achieve both easy puncture and prevent leakage simultaneously.
Solution Approach 2:
The second port member is nested inside the first port member, creating a concentric structure where the inner member provides sealing functionality while the outer member provides insertion functionality. This nested arrangement allows both functions to coexist without interfering with each other.
3Reliability
If the outer diameter of the insertion portion of the puncture instrument is changed to match the puncture port size, then sealing is improved, but the instrument cannot be universally used
Solution Approach 1:
The first port member is designed with a larger outer diameter that can accommodate various puncture instruments with different sizes. The second port member provides the sealing function regardless of the instrument size. This universal design allows the same puncture port structure to work with different puncture instruments while maintaining sealing performance.
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 reduces content loss and maintains sterility by preventing leakage and ensuring effective sealing during puncture, regardless of the puncture instrument's size, while allowing for easy manufacturing and versatility in use.
Implementation Method 1
the first port member, the second port member, and the liquid discharge portion are welded at the boundary portion
Data Source
AI summary
Provided is a liquid storage container having a puncture port capable of ensuring hermeticity at the time of puncturing regardless of the size of an insertion part of a puncture instrument and also capable of reducing the loss of contents. A puncture port 40, which is provided in a liquid storage container 1 for storing liquid and is punctured by a puncture instrument 200 having a needle tube portion 210 formed with a through hole 215, comprises a cylindrical port main body portion 43, a liquid discharge portion 30, and a first partition 411 and a second partition 421 provided in the port main body portion 43, wherein the port main body portion 43 is joined to the liquid discharge portion 30 at a boundary portion between a liquid accommodation portion 10 and the liquid discharge portion 30.