Multi-Partition Puncture Port for Liquid Storage Containers
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Solution Overview
Problem
Conventional puncture ports in liquid storage containers often experience leakage issues due to the size mismatch between the puncture instrument's needle tube and the port's partition, leading to loss of contents and compromised sterility.
Innovation Solution
A puncture port design featuring a cylindrical structure with a first and second partition, where the distance between the partitions is longer than the needle tube's opening portion, ensuring sealing performance regardless of the puncture instrument's size, and a manufacturing method involving sheet-shaped members and welding to create a sealed liquid storage container.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the opening portion length of the needle tube is larger than the partition thickness, then the puncture instrument can penetrate the partition, but the inside and outside of the puncture port communicate in the middle of penetration causing leakage
Solution Approach 1:
The puncture port is divided into multiple partitions (first partition, second partition, third partition) that segment the penetration path. The needle tube passes through multiple partitions sequentially, with each partition providing a sealing interface. This segmentation ensures that even if one partition is penetrated, other partitions maintain the seal, preventing leakage during the puncture process.
Solution Approach 2:
The puncture port acts as an intermediary component between the needle tube and the liquid storage container. The multiple partitions create intermediate sealing zones that mediate the transition from sealed to open state, allowing controlled communication while maintaining sealing performance during penetration.
2Reliability
If the outer diameter of the insertion portion of the puncture instrument is changed to fit the puncture port, then sealing performance may be maintained for specific sizes, but the solution is limited by the size of the puncture instrument
Solution Approach 1:
The puncture port with multiple partitions is designed to be universal and compatible with puncture instruments of various sizes. The partition structure provides multiple sealing surfaces that can accommodate different needle tube diameters, allowing a single puncture port design to work with various puncture instruments without requiring size-specific modifications.
Solution Approach 2:
The invention changes the structural parameters of the puncture port by adding multiple partitions with different thicknesses and configurations. This parameter modification allows the puncture port to adapt to different needle tube dimensions while maintaining sealing performance, providing versatility across various puncture instrument sizes.
3Device complexity
If a single partition is used in the puncture port, then the structure is simple, but leakage occurs when the needle tube opening portion is larger than the partition thickness
Solution Approach 1:
Instead of using a single partition, the puncture port is segmented into multiple partitions (first, second, and third partitions) with different thicknesses and positions. This segmentation provides multiple sealing opportunities during needle tube penetration, ensuring that at least one partition maintains the seal even when others are penetrated, thereby improving reliability without excessive 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
The design maintains sealing performance during puncture without size limitations, reducing leakage and ensuring sterility of the contents, while allowing for versatility in accommodating various puncture instrument sizes.
Implementation Method 1
welding a portion where the first port member and the second port member overlap with each other
Data Source
AI summary
The present invention provides: a puncture port which is capable of ensuring sealability when a puncture is formed, regardless of the size of an insertion part of a puncture instrument; and a liquid storage container equipped with such a puncture port. A puncture port 40 is provided to a liquid storage container for storing a liquid, is to be punctured by a puncture instrument 200 equipped with a needle tube part 210 having a through-hole 215 formed therein, and comprises: a cylindrical port body 43; and a first partition wall 411 and a second partition wall 421 that are provided to the port body 43. In the puncturing direction, the distance D between the first partition wall 411 and the second partition wall 421 is longer than the length HL in the puncturing direction of an opening portion 220 of the through-hole 215 at least at the leading end of the needle tube part 210.